Saturday, December 20, 2008

What is P-Number?

You might be asking, what is P-Numbers? P-Number is often used in WPS and Welder’s Qualification.

In accordance to QW-420.1 of ASME IX, to reduce the numbers of welding and brazing procedure qualification required, base metals have been assigned P-Numbers, and for ferrous base metals which have specified impact test requirements, Group Numbers within P-Numbers. These assignments are based essentially on comparable base metal characteristics, such as composition, weldability, brazeability and mechanical properties, where this can logically be done. These assignments do not imply that base metal maybe indiscriminately substituted for a base metal which was used in the qualification test without consideration of compatability from the stand point of metallurgical properties, and service requirements. Where notch-toughness is a consideration, it is presupposed that the base metals meet the specific requirements.

The P-Numbers of each specific materials are listed in QW/QB-422 of ASME IX.

Tuesday, December 2, 2008

CODES AND STANDARDS

CLASS OF WORK
There are many types of work which require engineering materials to be joined by welding, for example:

Pressure vessels
Bridges
Oil rigs
Earth moving equipment
Aero-engines
Ventilation systems
Storage tanks
Heavy vehicle chassis
Car bodies
Food processing plant

The quality requirements of the joints in these fabrications depend on their fitness-for-purpose and differ significantly from one application to the next. Pressure vessels require welds, which can withstand the stresses and high temperatures experienced in operation. Oilrigs are designed to withstand the effect of wave formation and wind loads. Earth moving equipment has to accommodate differences in terrain and earth conditions and is subject to fatigue loading. Welds in food processing plants must withstand corrosion by hot acidic liquors.
Below are listed some typical codes of practice and standards which cover various types of constructions fabricated by welding.

Code----------- Class of Work
BS 5500-------- Unfired fusion welded pressure vessels
ASME VIII------ American boiler and pressure vessel code
BS 2633-------- Class 1 arc welding of ferritic steel pipe work for carrying fluids
BS 4515-------- Process of welding steel pipelines on land and offshore
BS 5950-------- Structural use of steelwork in building
AWS D1.1------- Structural welding code (American)
BS 5400-------- Steel, concrete and composite bridges
BS 6235-------- Code of practice for fixed offshore structure
API 1104------- Standard for welding pipelines and related structures

These documents can also provide a useful source of data for applications where codes do not exist. It should be remembered, however, that the principal criterion in the codes listed is the quality of the joint in relation to the service conditions. There are other applications where success is judged by different criteria, such as dimensional accuracy.
Another important consideration is controlling the cost of welding. Variations in weld times and quantities of consumables can readily result if the method of making a weld is left to the welder to decide.
The continuous and satisfactory performance of weldments made to various codes requires that specific guidelines are laid down to cover all variables. These guidelines are usually grouped under the general heading of a Weld Procedure.

CODE OF PRACTICE

A code of practice is a set of rules for manufacturing a specific product. It should contain:
Design Requirements (e.g. fit-up, preparation and type of joints)
Material (e.g. types, thickness ranges)

Manufacturer’s Working Practice
Inspection Criteria (e.g. 100% visual, percentage other NDT)
Acceptance Criteria (e.g. defect size, limits, etc.)
Welding Process (e.g. type, consumables)
Types Of Tooling (e.g. use of strongbacks)

Contractual Information
The difference between a code and a standard is that a code states how to do a specific job and does not contain all relevant information, but refers to other standards for details.
A code or standard generally mentions three parties - the customer or client, the manufacturer or producer and the inspection authority. In a code the term ‘shall’ means mandatory - must be done, and the term ‘should’ means recommended - not compulsory.
A concession is an agreement between the contracting parties to deviate from the original code requirements. (BS 5135)

DUTIES OF A WELDING INSPECTOR

VISUAL INSPECTION
At any point in the course of welding, i.e. tacking, root pass, filler pass or capping pass, but particularly for the root and cap, a detailed inspection may be required. British Standard 5289: 1976 gives guidance on tools and responsibilities together with sketches of typical defects.

The inspector at this point must -
a)observe, identify and perhaps record (measure) the features of the weld.
b)decide whether the weld is acceptable in terms of the particular levels that are permitted; defect levels may be ‘in-house’ or national codes of practice.

When the defect size is in excess of the permitted level then either a concession must be applied for (from a competent person), or the weld rejected.

AIDS OF VISUAL INSPECTION
Illumination:Good lighting is essential.
Inspection Lenses: The magnification should not exceed 2 - 2.5 diameters. If higher magnification is required use a binocular microscope.Optical viewing can progressively develop from eyesight, to use of a hand torch and mirror, to the addition of a magnifier and light source.

In order to achieve accessibility, remote probe units are available which must have the following properties.
a)Large field of vision
b)Freedom from distortion of image
c)Accurate preservation of colour values
d)Adequacy of illumination

CODE OF PRACTICE
A code of practice for an inspection department should take the form outlined below. It is appreciated that full implementation of the code would be extremely costly and therefore it may be necessary to reduce the amount of inspection to less than is theoretically required.

The inspector should be familiar with the following:
a)All applicable documents
b)Workmanship standards
c)All phases of good workshop practice
d)Tools and measuring devices

INSPECTION BEFORE WELDING
Before Assembly:
Check * All applicable documents.
* Quality plan is authorised and endorsed with signature, date and company stamp.
* Application standard is up to date with the latest edition, revision or amendment.
* The drawings are clear, the issue number is marked and the latest revision is used.
* Welding procedure sheets (specifications) are available, have been approved and are employed in production.
* Welder qualifications with identification and range of approval are verified and that only approved welders as required are employed in production.
* Calibration certificates, material certificates (mill sheets) and consumer certificates are available and valid.
* Parent material identification is verified against documentation and markings.
* Material composition, type and condition.
* Correct methods are applied for cutting and machining.
* Identification of welding consumables such as electrodes, filler wire, fluxes, shielding and backing gases and any special requirements (e.g. drying) are met.
* Plant and equipment are in a safe condition and adequate for the job.
* Safety permits e.g. hot work permit, gas free permit, enclosed space certificate are available and valid.

After Assembly
Check * Dimensions, tolerances, preparation, fit-up and alignment are in accordance with the Approved drawings and standards.
* Tack welds, bridging pieces, clamping and type of backing - if any used are correct.
* Cleanliness of work area is maintained.
* Preheat in accordance with procedure.

NOTE Good inspection prior to welding can eliminate conditions that lead to the formation of defects.

INSPECTION DURING WELDING
Check * The welding process must be monitored.
* Preheat and interpass temperatures must be monitored.
* Interpass cleaning - chipping, grinding, gouging, must be monitored.
* Root and subsequent run sequence.
* Essential variables such as current, voltage, travel speed to be monitored.
* Filler metals, fluxes and shielding gases are correct.
* Welding is in compliance with weld procedure sheet and application standard.

INSPECTION AFTER WELDING
Check * Visual inspection to be carried out to ascertain acceptability of appearance of welds.
* Dimensional accuracy to be ascertained.
* Conformity with drawings and standards requirements.
* Post weld heat treatment, if any, monitored and recorded.
* NDT carried out and reports assessed.
* Assess defects as to either repairing, or application for concession.
* Carry out any necessary repairs.
* Control of distortion
REPAIRS
* Repair procedure and welding code should be authorised.
* Defect area should be marked positively and clearly.
* Check when partially removed and fully removed (visual and NDT).
* Re-welding should be monitored.
* Re-inspect completed repair.

Collate all documents and reports. Pass the document package on to a higher authority for final inspection, approval and storage.

THE WELDING INSPECTOR

RESPONSIBILITIES
Ensure compliance with standard or code.
Ensure workmanship.
Ensure welding criteria by ‘policing’ work and documentation.

ATTRIBUTES
Honesty and integrity.
Literacy.
Fitness - physical and eyesight.

DUTIES
Observe.
Measure.
Identify.

Welder’s Test Position (ASME IX QW-461.3-461.7)

Groove Welds in Plate - Test Positions
1G, 2G, 3G & 4G

Groove Welds in Pipe - Test Positions
1G (rotated), 2G, 5G, 6G

Fillet Welds in Plate - Test Positions
1F, 2F, 3F, 4F

Fillet Welds in Pipe- Test Positions
1F (rotated), 2F, 2FR (rotated), 4F & 5F

Stud Welds - Test Positions
1S, 2S & 4S

Monday, December 1, 2008

How to Tig Weld – Basics of Tig Welding

Got a welding project to do? Need help with tig welding? Don’t worry. We’ve got some tips on how to tig weld that will save you and your welding project from disaster.

If this is your first welding project, it’s best if you get a little background information on welding first.

Welding, unlike soldering and brazing – two things that are usually mistaken to involve a similar process as welding, uses coalescence to join metals or thermoplastics.

This is done through melting the work pieces and adding another material to create a weld puddle which, when cooled, becomes a strong joint and produces the weld. So a weld, in case you’re still wondering, is simply a joint formed by welding.

To produce a good weld, first you need to make an arc. With this arc, create a weld puddle and put fill metal on it and push it along the weld joint. Finish the arc. Let the puddle cool and protect it by leaving the torch over it.

In Tig welding, it’s also important to establish a good electrical contact between the tungsten and collet. This way, current transfer and weld quality can be improved.

Practice good maintenance for your welding tools by checking them regularly for worn parts and keeping your tig torch components tightened always. You should also clean your weld joint and the filler metal by removing oil, grease, and dirt, as these elements may cause arc instability or dirty welds.

There are many books and courses that provides more tips for tig welding. Welding is both an art and a science but to achieve a perfect tig weld, you have to practice it often to get the hang of it.

By Ricky Lim

Heats School of Welding Technology, Inc. provides courses for TIG Welding as well as SMAW

Sunday, November 30, 2008

70 6G WELDERS - TIG OR MIG (Urgent) for CANADA

Hey guys here's another opening for welders. Canada needs you!!! If you are qualified, please contact the agency directly. If you are not yet qualified, Heats School of Welding Technology, Inc. can help you. Enroll with us and we will train you to become a certified welder.

here the job opening......

SCS PLACEMENT SERVICES INC.

POEA License No. : POEA-162-LB-060208-R
Address : 96 New York Avenue, Cubao Quezon City Metro Manila
Tel. No. : 2 913 6104

70 6G WELDERS - TIG OR MIG (Urgent)
Work Site: Ontario, Canada

Opening Date: Nov 24, 2008 Closing Date: Dec 30, 2008
For Manpower Pooling Only. No Fees shall be collected from the Applicant.
"BEWARE OF ILLEGAL RECRUITERS"

Prospective Principal/Project Canadian Client
Proposed Salary 3,000 CAD
Qualifications Gender : Male
Age : 23 - 40 yrs old
Education : At least Vocational Diploma / Short Course Certificate
Yrs. of Experience : 2 yr(s)

1. With experience in pipe lines welding as 6G welders either in Tig or Mig process.
2. With experience in heavy industrial plant as welder.
3. With recent TESDA certification and WQT record from your previous employer.
NOTE: An applicant who does not meet the above minimum requirement, NO NEED TO APPLY PLEASE.
Please bring the following documents during the preliminary interview:
1. Updated comprehensive resume with detailed job description in every employer’s work experience. (2 sets original copies)
2. School and employment credentials including trainings and seminars attended. (2 sets xerox copies)
3. Recent passport (2 sets xerox copies)
4. Recent NBI Clearance – Travel Abroad (2 sets xerox copies)
5. 2 x 2 colored ID picture (2 pcs.)
6. Long folder with fastener (1 set)
NOTE: Only short-listed applicants will be notified for preliminary interview.

Learning About Welding and Necessary Supplies

Welding is an age-old process of joining metals. Welding supplies are necessary for better metal works.

The environment is a concern for all of us today. One way of saving the environment is limited use of wood in constructions, small and big. Many wood replacements were developed to imitate wood appearance. The use of metals is the more popular wood alternative.

Use of metals requires an age-old process. This is the fabrication process or the joining of materials. Welding does joining of materials, metals, or even thermoplastics. Causing coalescence joins metals. The process involves melting the pieces to be joined together and having molten filler in between to form a strong joint. Heat is used, or in combination with pressure, in producing a weld.

Welding utilizes a number of energy sources. These sources include gas flame, electric arc, laser, electron beam, friction, and ultrasound. Welding is considered as an industrial process. In spite of this thinking, welding can be done in an unlimited number of circumstances one imagines. Welding is possible in an open-air situation, underwater and yes, even in space.

Welding is dangerous, in all location where welding is possible to be done. Care must be observed when doing a welding work. Precautions should be taken into consideration to avoid unacceptable consequences such as burns, electric shock, eye damage, poisonous fumes, and overexposure to ultraviolet light.

For centuries, welding is done through the simplest process of forged welding. Heating the materials and pounding to connect metals. In this procedure, heat and pressure are used. Historic structures and art masterpieces were constructed and fabricated using this simple welding process.

Arc welding is the most popular welding process used in many work places. This is done by an electric arc between an electrode and the base materials. The metals are melted at the welding point. Electric arc is created and maintained by the use of an electric power supply. Use of an alternating or direct current and a consumable or a non-consumable electrode is possible in an electric arc welding. Shielding gas usually protect the welding area.

Arc welding requires an electrical power supply. Most commonly used are the constant current power supplies and the constant voltage power supplies. The length of the arc is directly related to the voltage while on the other hand, the amount of the heat input is related to the current. In manual arc welding, the constant current power supplies are used most often.

Power or energy supplies are the most important supplies needed in the welding processes. Another requirement in welding is a continued supply of electrodes or what is commonly referred to as welding rods. Replacement supplies for the various welding equipment and tools might be an option for a continued and uninterrupted work.

Miscellaneous supplies can be considered on hand at the work place for a better workflow. These supplies may include brushes and brooms, tape, cable ties, tie downs, tarpaulins, and vacuums.

In order that welders and assistants may perform their jobs better, supplies of these safety and comfort products may be stocked at the working area. These supplies are as follows, but not limited to the list; eye protection, face protection, gloves, first aid, protective clothing, hearing protection, respiratory protection, and other such worker comfort product.

By: Jayesh Bagde

Tuesday, November 25, 2008

One more Employer Looking for Fresh Graduate TIG Welder

Hey guys, one more employer si looking for fresh graduate TIG Welder.

Here is the email....

On Tue, 11/25/08, Dominic N. Chung wrote:

From: Dominic N. Chung
Subject: Inquiry for Job Hiring
To: pwtc_luzon@yahoo.com
Date: Tuesday, November 25, 2008, 3:32 AM


Dear Sir/ Madam,

We are looking for a fresh graduate who is familiar with Tig welding.

our office is here in Sta Mesa, Metro manila.

thank you and more power.

Dominic Nicandro Chung

Plate Welders (2G, 3G & 4G) Needed - Local Job

Hey guys, one of our readers are in need of Plate Welders (2G, 3G & 4G).

Here is his invitation....

Re: Certified WelderTuesday, November 25, 2008 11:04 AM
From: This sender is DomainKeys verified "Jeffrey Contreras"
To: Pedro Jose

Hi Mr. Jose,

Thanks for the quick reply.

Our welding works will start in early January. Meantime, we are now preparing the materials we are going to install as well as its galvanizing. However, if your previous graduates are interested please direct them to us as early as possible so we can interview them.

Thanks,

JEFF


--------------------------------------------------------------------------------
From: Pedro Jose
To: Jeffrey Contreras
Sent: Tuesday, November 25, 2008 10:52:35 AM
Subject: Certified Welder

Dear Sir,
Thank you for your letter to us through sulit.com

We are sorry to inform you that we are not supplying welders. We only train welders.

However, if you require welders from time to time, can we ask our graduates to apply to you? We have graduates every other month and by February 2009 we will have a new set of graduates. It would be a great opportunity for our graduates if you will accept them.

We can assure you that our graduates are Certified upon graduation since we are giving them Actual End of Course Assessment, and they can get their Welder's Qualification Certificate and Training Certificate once they passed the test.

Thank you and regards,
for Heats
Pedro Jose Jr.



Name: JEFFREY A. CONTRERAS

Subject: CERTIFIED WELDERS

Message:
We are in need of certified welders (2G, 3G & 4G) for deployment locally in TOWER RETROFITTING WORKS. Are you supplying manpower?

Please e-mail your reply or call me up at my celfone.

Thanks

Friday, November 21, 2008

Arc Welding Basics

Author: Cooper Miller

One of the most popular and common types of welding in use today is arc welding. Yet the average layman walking the street has little understanding of this welding process other seeing the blinding light flashing from a construction job site they may walking past at rush hour. Welding is basically just a fusion process for joining metals. The metals are simply melted together by intense heat and fuse as one piece. If done correctly, welding makes the joining of two pieces of metal with the same strength as single solid piece. A welding joint is superior to gluing because through the welding process, the metals are actually melted together instead using the bonding properties of glue to hold them together.

The key concept in welding is a heat source is needed in order to fuse the metal together. There are several methods of welding and arc welding is one of the most popular. The term arc welding comes from the fact that an electrical arc is created to produce intense heat. This arc is formed between the metal being worked on and an electrode connected to the arc welder. The electrode rod is moved along the joint and is melted by the electrical arc. The rod has two purposes. One is to help produce the arc and the other is it makes a filler material as it is melted.

At its heart, arc welding is about creating an electrical circuit. An arc welder needs an electrical power source that produces either AC or DC current. The metal piece you are attempting to weld becomes part of the electrical circuit by attaching a cable from the arc welder to metal. The other hot cable is attached to electrode that the welder is holding. An electrical arc is created between the metal work piece and the electrode when the electrode is held close to the metal. Now there is a complete electrical circuit between the arc welder and the metal. This process creates some pretty amazing temperatures. The tip of the arc can reach temperatures in excess of 6500ยบ F. Now there is enough heat to fuse the metal pieces together and create a strong bond. To ignite the arc, the electrode must be pressed against the metal and then pulled away.

Besides creating heat, the arc produces a very bright light. This light is hazardous to the welder and those around the welding job site. You should not look directly into the arc without proper eye protection. However, the visible light is not the only danger. The arc gives of infrared and ultraviolet light that is invisible to the naked eye. This is why welders wear auto darkening welding helmets. These helmets will automatically darken when the arc is struck to shield the welders eyes from the bright visible and the lens filter is designed to keep out infrared and ultraviolet at all times whether the lens is darkened or not. Welders also put up welding blankets or shields to protect other people in the work area that may not have proper eye protection.

Despite these hazards arc welding is a safe and reliable method for fusing metal together and with some practice anyone can become competent enough for basic welding.

Friday, November 14, 2008

Qatar Needs Plate Welders

Hey guys, Qatar needs plate welders. This was published in workabroad.com

pls check the following url.
http://www.workabroad.ph/report_job_listing.php?ajid=207599

If you are qualified, apply personally.....

This was copied from workabroad.com

here it goes...

EUREKA PERSONNEL & MANAGEMENT SERVICES, INC.
POEA License No. : 130-LB-050208-R
Address : 1913 Leon Guinto St., Malate, Manila Metro Manila
Tel. No. : 5239942/5247879/5247886/5249241/4981772

Plate Welder
Work Site: Qatar

Opening Date: Nov 10, 2008 Closing Date: Feb 10, 2009
For Manpower Pooling Only. No Fees shall be collected from the Applicant.
"BEWARE OF ILLEGAL RECRUITERS"

Prospective Principal/Project Daewoo E&C Co Ltd.
Proposed Salary Negotiable
Schedule of Interview
Qualifications Gender : Male
Age : 23 - 45 yrs old
Education : At least Vocational Diploma / Short Course Certificate
Yrs. of Experience : 3 yr(s)

Job Description:
Minimum 3 years experience as Plate Welder
in the field of Oil & Gas project
X Qatar should have NOC Certificate

URGENT!

Final Interview November 18 & 20

Should you find qualified for the position herein indicated, pls. report to EUREKA PMSI office to accomplish prescribe application form and to be scheduled for final interview by the employer .
Those who are presently working abroad and cannot readily available need not apply, our requirements are urgent!
PLS. CALL US FOR FURTHER / DETAILED INFORMATION AT THE FOLLOWING NUMBERS: 4984002/4981772/4008438/5239942/5247886

Mobile : 09186839519

You can send us your resume to the following e-mail address.

Kindly attention to Ms. Rona

eureka-hrd@eastern.com.ph

eureka-hrd@pldtdsl.net

hrd@eureka.com.ph

info@eureka.com.ph

WEBSITE : www.eureka.com.ph

Tuesday, November 4, 2008

URGENT REQUIREMENTS FOR NDT TECHNICIAN AND INSPECTORS

Hey guys, Magsaysay Maritime Corporation is need of NDT Technicians and Inspectors as emailed below. Please apply personally if you are qualified.

This is an excerpt of their email....

Dear Sir,
We have browsed your name and email address in the list of NDT members database. Our employer SGS-ARAMCo Projects are urgently in need of QC Inspectors ( Mech'l, Elect'l, Civil, Welding,Plumbing, HVAC, Communication ) and NDT Technicians with RTFI. If you have friends, family members, co-workers that are interested kindly refer our urgent requirement to them.

Qualification are as follows:
1. Maximum age of 45 for NDT and 48 for QC Inspectors ( All Eng'g Discipline as mention above )
2. Min. of 5 years related experience for QC Inspectors and 4 years related working experience for NDT Tech with RTFI.
3. Interview Schedule will be 2nd Week of November 2008 ( Tentative ) Kindly look or call below person for more details:

Lloyd A. Dayap
Recruitment Specialist
Magsaysay Maritime Corporation
G/F Antonino Building
520 T.M. Kalaw Street,
Ermita, Manila, Philippines
Tel : (632) 526.8888 local 9473
Fax : (632) 526.2091
Mobile : (0927) 824.7553
Email : ladayap@magsaysay.com.ph

Sunday, October 26, 2008

NDT Course (UT, PT, MT) in Philippines

Are you an engineering graduate? or at least 4th year engineering? Are you planning to work abroad? This is your stepping stone. NDT Technicians are in-demand abroad. You can check in Manila bulletin every sunday to see it for yourself or visit www.asnt.org , www.aws.org , www.poea.gov.ph/cgi-bin/jobVacancies/jobsMenu.asp

We offer NDT Courses at the following schedules

May 11-15, 2009 - Ultrasonic Testing Level I - P13,000 plus 10% VAT
May 11-13, 2009 - Magnetic Particle Testing Level I - P10,000 plus 10% VAT
May 14-16, 2009 - Magnetic Particle Testing Level II - P15,000 plus 15% VAT
May 18-22, 2009 - Ultrasonic Testing Level II - P25,000 plus 10% VAT
May 18-20, 2009 - Penetrant Testing Level I P10,000 plus 10% VAT
May 21-23, 2009 - Penetrant Testing Level II - P15,000 plus 10% VAT

Your certificates will be signed by our ASNT Level III personnel.

Tuesday, October 7, 2008

Welding Course (SMAW & GTAW) in Philippines by Heats School of Welding Technology, Inc.

Due to the high demand of Welders around the world,Heats School of Welding Technology, Inc. offers SMAW & GTAW Course in Philippines.

Below are the Course Details and About Heats School of Welding Technology, Inc.

ABOUT US

HISTORY
Heats School of Welding Technology was conceived initially as PWTC (PGJ Welding and Training Company) by a Certified Sr. Welding Inspector and a Mechanical Engineer by profession. From PWTC, it becomes H.E.A.T.S. (HMMJ Engineering and Training Services). From H.E.A.T.S., it becomes Heats School of Welding Technology, Inc. This institution was conceived because he witnessed in his industry experience the demand of welders in every construction company.

MISSION
Our mission is to produce a "World Class Welders, Welding Inspectors and other Skilled Workers".

VISION
Our vision is to be the premier Training Center in the Philippines and to help Out of School Youth.

INSTRUCTORS
Our Instructor for SMAW and GTAW is a Certified SMAW/GTAW/GMAW Welder both in Carbon Steel and Stainless Steel. He worked as a Welder in the Oil and Gas Industry for more than 10 years and welded mostly Piping works.

WHY WELDER’S COURSE?
Welders are now in-demand locally, in Middle East, Africa, Canada, Australia, United States and Asia because of the booming construction of Oil and Gas structures, plants, tanks, pipelines and piping.

There is now a global shortage of welders. This is your chance and stepping stone to start a new career to fill the gap in the Construction Industry locally and internationally.

The choice is yours!!!

WELDING COURSES OFFERED

COURSE TITLE: Shielded Metal Arc Welding (SMAW-I) - PLATE

NOMINAL DURATION: 268 hrs.

COURSE DESCRIPTION:
This course is designed to enhance the knowledge, skills and attitudes in Shielded Metal Arc Welding in accordance with industry standards. It covers core competencies such as Setting-up Welding Equipment, Preparing Weld Materials, Fitting up Weld Materials, Welding Carbon Steel Plates Using SMAW and Repairing Welds.

COURSE OUTCOMES:
At the end of this course, the student/trainee will be able to:
1. Weld carbon steel plates components and Pass the 3G (Vertical-up) Position
2. Read blueprint
3. Fit-up weld joints
4. Prepare weld materials
5. Set-up welding machines
6. Do repair of welds

ENTRY REQUIREMENTS:
Trainees or students wishing to gain entry into this course should possess the following requirements:

• can communicate either oral and written
• physically and mentally fit
• with good moral character
• can perform basic mathematical computation



COURSE TITLE: Shielded Metal Arc Welding (SMAW-II) - PIPE

NOMINAL DURATION: 268 hrs.

COURSE DESCRIPTION:
This course is designed to enhance the knowledge, skills and attitudes of SMAW Welder in accordance with industry standards. It covers competencies such as Setting-up Welding Equipment, Preparing Weld Materials, Fitting up Weld Materials, Welding Carbon Steel Plates Using SMAW, Welding Carbon Steel Plates and Pipes Using SMAW and Repairing Welds.

COURSE OUTCOMES:
At the end of this course, the student/trainee will be able to:
1. Weld carbon steel plates and pipes components using SMAW at 6G Uphill Position (6 inch diameter pipe)
2. Read blueprint
3. Fit-up weld joints
4. Prepare weld materials
5. Set-up welding machines
6. Do repair of welds

ENTRY REQUIREMENTS:
Trainees or students wishing to gain entry into this course should possess the following requirements:

• completed training in SMAW - I or a holder of SMAW NC I or can pass the practical test for 3G position and written exam
• can communicate both oral and written
• physically and mentally fit
• can perform basic mathematical computation


COURSE TITLE: Gas Tungsten Arc Welding (GTAW-II) - PIPE

NOMINAL DURATION: 268 hrs.


COURSE DESCRIPTION:
This course is designed to enhance the knowledge, skills and attitudes of GTAW Welder in accordance with industry standards. It covers core competencies such as Setting-up Welding Equipment, Preparing Weld Materials, Fitting up Welds Materials, Welding Carbon Steel Plates Using GTAW, Welding Carbon Steel Plates and Pipes Using GTAW and Repairing Welds.

COURSE OUTCOMES:
At the end of this course, the student/trainee will be able to:
1. Weld carbon steel plates and pipe components using GTAW and pass the 6G Uphill (2" diameter pipe)position.
2. Read blueprint
3. Fit-up weld joints
4. Prepare weld materials
5. Set-up welding machines
6. Do repair of welds

ENTRY REQUIREMENTS:
Trainees or students wishing to gain entry into this course should possess the following requirements:

• Completed training in SMAW - II or a holder of SMAW NC II or can passed the practical test for 6G position and written exam
• can communicate either oral and written
• physically and mentally fit
• can perform basic mathematical computation

THE CHALLENGE!!!

Are you ready to weld the pieces of your future? What are you waiting for? Contact us for booking. Maximum of 12 trainees per session is allowed. First come first served.


Contact us:

email: pwtc_luzon@yahoo.com


NOT CHALLENGED?

Check the Manila Bulletin Sunday Edition to see it for yourself.

Check the following websites
POEA - www.poea.gov.ph
Workabroad – www.workabroad.com.ph
JobsDB - www.jobsdb.com


Think about it!!! Think of your future!!!

Monday, September 29, 2008

Welding Course in Philippines

Nowadays, the construction is booming in the Middle East, Asia, Australia, US and Africa. Due to the high cost of crude in the world market, many Petroleum Companies are expanding their businesses.

When the construction is booming, welders are in-demand. Most of the Certified Welders are engaged and some of the companies are in dilema on finding welders.

Welders are in demand nowadays, and the workforce is short.

Are you ready to be a welder?

Heats School of Welding Technology, Inc. is offering the following Welding Courses for those who want to become a Certified Welders.

1. SMAW Plate (Basic) - If you want to be a certified plate welder, this course is for you. You will learn how to weld in 1F, 2F, 3F, 1G, 2G and 3G position using SMAW. After completing the course, you are required to take the end of course assessment in Practical (2G & 3G) and theory. Once you passed the practical and written test, you will be given a Welder's Qualification Test (WQT) Certificate signed by Sr. Welding Inspector (CSWIP 3.2). If you want to have the National Certificate, you can go to TESDA for assessment. TESDA will give you National Certificate once you passed their assessment.

If you are 16 years old and above, fit to work, can read and write and can do basic math, this course is for you.

2. SMAW Pipe (Advance) - If you want to be a certified pipe welder, this course is for you. You will learn how to weld in 1F, 2F, 5F, 1G, 2G, 5G and 6G position using SMAW. After completing the course, you are required to take the end of course assessment in Practical (6G) and theory. Once you passed the practical and written test, you will be given a Welder's Qualification Test (WQT) Certificate signed by Sr. Welding Inspector (CSWIP 3.2). If you want to have the National Certificate, you can go to TESDA for assessment. TESDA will give you National Certificate once you passed their assessment.

If you are 16 years old and above, fit to work, can read and write, can do basic math, Completed the SMAW Plate or Can pass the 2G & 3G position using SMAW, this course is for you.

3. GTAW Pipe - If you want to be a certified pipe welder (TIG), this course is for you. You will learn how to weld in 1F, 2F, 5F, 6F 1G, 2G, 5G and 6G position using GTAW. After completing the course, you are required to take the end of course assessment in Practical (6G) and theory. Once you passed the practical and written test, you will be given a Welder's Qualification Test (WQT) Certificate signed by Sr. Welding Inspector (CSWIP 3.2). If you want to have the National Certificate, you can go to TESDA for assessment. TESDA will give you National Certificate once you passed their assessment.

If you are 16 years old and above, fit to work, can read and write, can do basic math, Completed the SMAW Pipe or can pass the 6G SMAW, this course is for you.

The Institutional Assessment shall be conducted in Heats Training Center and it shall be in accordance with ASME IX and Heats WPS.

The Instructors are Certified SMAW and TIG Welders in Plate, Pipe for Carbon Steel and Stainless Steel.

SO, WHAT ARE YOU WAITING FOR FOR? ARE YOU READY TO WELD YOUR FUTURE? CONTACT US AND BOOK NOW. Email us at pwtc_luzon@yahoo.com

Early birds are given 5% discount. All courses shall be conducted on January 2009.

Sunday, September 28, 2008

Classifications of Welding Imperfections

1. Cracks

2. Solid Inclusions

3. Surface and Profile

4. Misalignment

5. Gas pores and porosities

6. Lack of fusions

7. Mechanical Damage

Weld and Joint Terms Definitions

1. A Weld - A union of materials, produced by heat and/or pressure

2. A Joint - A configuration ofmembers

3. A Weld Preparation - Preparing a joint to allow access and fusion through the joint faces

4. Types of Weld - Butt Weld, Fillet Weld, Spot Weld, Seam Weld, Edge Weld

5. Type of Joint - Butt Joint, Lap Joint, Tee Joint, Corner Joint

77 Days To Go for the Welding Inspector's Course

77 more days to go for the next Welding Inspector's Course. It shall be held on December 15-19, 2008 at Heats Training Room.
so what are you waiting for? Come and join us. email us for booking at pwtc_luzon@yahoo.com

ISO 9000 Awareness Course & IQA Course - 3 More Weeks to go!!!

Three more weeks to go for the ISO 9000 Awareness Seminar and Internal Quality Auditing course.
These courses are helpful for engineers and professionals who deal with ISO 9000 and Quality auditing.
If you are interested pls contact us for booking at pwtc_luzon@yahoo.com

Arc Starting With Different Polarities in GTAW

ELECTRODE POSITVE STARTING
Preheat Tungsten
Repeatable Starting
Cleans work on starts
Can damage tungsten tip
Good for AC TIG

ELECTRODE NEGATIVE STARTING
Preferred for precision DC
Repeatable starting
No cleaning on starts
No damage to tungsten
Acceptable for AC

Friday, September 26, 2008

A Word of Encouragement from a Client - Thank you for your support to HEATS!!!

Below is an excerpt of an email of one of our client.

Thank you very much for your support to HEATS. I hope that you can spread the word to others...

here it goes......

From: Christine Corales
Subject: Re: inquiry
To: pwtc_luzon@yahoo.com
Date: Thursday, September 25, 2008, 10:57 PM

Dear Mr. Jose,
It's actually my partner who will be attending the seminar. We will consider our choices. Thank you for all your help and for indulging in all my queries. Personally, I think what you are doing, offering alternative sources of income by giving proper training to fellow Filipinos, is very commendable. I do hope you get to hook up with other NGOs to promote your program.

Sincerely,
Christine Corales

Saturday, September 20, 2008

10 ARC WELDER needed in UAE

Hey guys, UAE needs welders. The following details were taken from workabroad.com.ph

http://www.workabroad.ph/report_job_listing.php?ajid=190493

AL MANAF INTERNATIONAL MANPOWER CORPORATION

[ Agency's Profile ]
POEA License No. : 033-LB-101705-UL
Address : Unit 201 & 202 Vareb Mansion, 1679 A.Mabini Cor Malvar Sts. Malate Metro Manila
Tel. No. : (632)522 0117 / (632)5220153

10 ARC WELDER
Work Site: United Arab Emirates

Opening Date: Sep 16, 2008 Closing Date: Dec 16, 2008
For Manpower Pooling Only. No Fees shall be collected from the Applicant.
"BEWARE OF ILLEGAL RECRUITERS"

Prospective Principal/Project METALLIC EQUIPMENT CO. LLC
Qualifications Gender : Male
Age : 21 - 45 yrs old
Education : any
Yrs. of Experience : 2 yr(s)

Skills Required:


CANDIDATE SHOULD HAVE MINIMUM 12STD IN SCHOOLING
SMAW CERTIFICATE WITH 6G GRADE IN POSITION
SKILLED IN VERTICAL DOWN (DOWN HILL) AND VERTICAL UP (UP-HILL) WELDING
ADAPTABILITY AND GOOD COMMUNICATION SKILL

Tuesday, August 19, 2008

Disadvantages of GTAW Welding

1.) Slower travel speed
2.) Lower filler metal deposition rate
3.) Hnad-eye coordination is a required skill
4.) Brughter UV rays than othe processes
5.) Equipment cost can be higher than other processes
6.) Concentrations of shielding gas may build up and displace oxygen when welding in confined areas - ventilate the area and/or use local forced ventilation at the arc to remove welding fumes and gases. If ventilation is poor, wear an approved air-supplied respirator

Monday, August 18, 2008

Advantages of GTAW Welding

Advantages of GTAW Welding
1.) Concentrated Arc - Permits pin point control of heat input to the workpiece resulting in a narrow heat affected zone.
2.) No Slag - No requirements for flux with this process; therefore no slag to obscure welder's vision of the molten weld pool
3.) No sparks or spatter - No transfer of metal across the arc. No molten globules of spatter to contend with and no sparks produced if material being welded is free of contaminants.
4.) Little smoke or fumes - Compared to other arc welding processes like SMAW or FCAW, few fumes are produced. However, the base metals being welded may contain coating or elements such as leas, zinc, copper, nickel and so on, that may produce hazardous fumes. Keep your head and helmet out of the fumes rising off the workpiece. Be sure that proper ventilation is supplied, especially in the confined space.
5.) Welds more metals and metal alloys than any other process.
6.) Good for welding thin material.

NEXT TOPIC: Disadvantages of GTAW Welding

Sunday, August 17, 2008

Principles of Gas Tungsten Arc Welding (GTAW)

PROCESS DESCRIPTION
Gas Tungsten Arc Welding (GTAW), also known as Tungsten Inert Gas (TIG) welding is a process that produces an electric arc maintained between a non-consumable tungsten electrode and the part to be welded. The heat-affected xone, the molten metal and the tungsten electrode are all shielded from atmospheric contamination by a blanket of inert gas fed through the GTAW torvh. Inert gas (usually Argon) is inactive or deficient in active chemical properties. The shielding gas serves to blanket the weld and esclude active properties in the sorrounding air. Inert gases such as Argon and Helium do not chemically react or combine with other gases. They pose no odor and are transparent, permitting the welder maximum visibility of the arc. In some instances Hydrogen gas may be added to enhance travel speeds.
The GTAW process can produce temperatures of up to 35,000 degrees F (19,426 degrees C). The torch contributes heat only to the workpiece. If filler metal is required to make the weld, it may be added manually in the same manner as it is added in the oxyacetylene welding process.
GTAW is used to weld stainless steel, nickel alloys such as Monel and Inconel, titanium, aluminum, magnesium, copper, brass, bronze and even gold. GTAW can also weld dissimilar metals to one another such as copper to brass and stainless to mild steel.

Next topic will be: ADVANTAGES AND DISADVANTAGES OF GTAW.

ARC WELDING HAZARDS

Protect yourself and others from injury!!!!

1.) Electric shock can kill
2.) Hot parts can cause severe burns
3.) Fumes and gases can be hazardous
4.) Arc rays can burn eyes and skin
5.) Welding can cause fire or explosion
6.) Flying metal or dirt can injure eyes
7.) Build-up of gas can injure or kill
8.) Magnetic fields can affect implanted medical devices
9.) Noise can damage hearing
10.) Cylinders can explode if damaged

Monday, August 4, 2008

Saudi Arabia needs Welding Inspectors

This is an excerpt from www.workabroad.com.ph

SAF INTERNATIONAL SERVICES, INC.

POEA License No. : 025-LB-020107-R
Address : Rm. 505 L&SBldg., 1414 Roxas Blvd., Ermita Manila
Tel. No. : 536-6004



6 Welding Inspectors
Work Site: Dammam, Saudi Arabia

Opening Date: Aug 2, 2008 Closing Date: Nov 2, 2008
For Manpower Pooling Only. No Fees shall be collected from the Applicant.
"BEWARE OF ILLEGAL RECRUITERS"

Prospective Principal/Project AL-ARABI STEEL FACTORY
Proposed Salary Very Good Salary Package plus other benefits
Qualifications Gender : Male
Age : 25 - 45 yrs old
Education : At least Bachelor's / College Degree
Yrs. of Experience : 2 yr(s)

Skills Required:

Graduate of Mechanical / Electrical or Civil Engineering course, knowledge in codes & standards & certification in (ASNT-TCIA) level II or III.
Other Details:

URGENTLY NEEDED ! ! ! PLS APPY IN PERSON, BRING YOUR RESUME & PICTURE (ANY SIZE)


Apply personally if you are interested and qualified!!!

Next Welding Inspector's Course

The next Welding Inspector's Course will be conducted on December 15-19, 2008 at Heats Training Room, Carangian, Tarlac City. The course shall be run by a Sr. Welding Inspector.

If you are interested, please contact us at pwtc_luzon@yahoo.com

So, what are you waiting for? Come and join us!!!!

Monday, July 14, 2008

US, QATAR & AFRICA needs WELDERS

US, Qatar and Africa needs welders. Pipe Welders (6G) and plate welder (2G & 3G). Click the above title for more information. Apply personally if you are interested and qualified.

WELDERS are really in demand!!!

Sunday, July 13, 2008

Malaysia Needs 200 6G Welders

Malaysia is in need of 200 6G Welders, click the above title for more information and apply personally if you are qualified and interested. Welders are really in great demands nowadays.

That's why HEATS is here to train welders!!! Come and join us!!!

Malaysia Needs Welding Inspectors

Hey guys, Malaysia needs 10 Welding Inspectors. Click the above title for more information. Apply personally if you are interested.

AUSTRALIA - Another destination for OFW's

Australia is eyeing for OFWs (medical, construction,and electronics). Welders are normally needed in Construction jobs.

So guys, mag training na as WELDER sa Heats.

Click the link above (post title) and read the news from Abante Online.

Friday, June 20, 2008

6 Participants Attended the Welding Inspector's Course

Six participants attended the Welding Inspector's Course at San Isidro Transient and Pavilion, San Isidro, Tarlac City. The course was conducted from June 16-20, 2008 from 8:00AM to 5:00PM. The course ended with END-OF COURSE ASSESSMENT.

These are the following participants;

1. Angelito Manayan - BS Architecture from Gerona, Tarlac
2. Larry Narra - BS Industrial Education from Tarlac City
3. Hermie Samson - BS Architecture from Tarlac City
4. Robinson Castaneda - BS Electrical Engineering from Tarlac City
5. Fundador dela Cruz - BS Civil Engineering from Tarlac City
6. David Valencia - BS Mechnaical Engineering from Mariveles, Bataan

The course was conducted by the MD of HEATS, a Certified Sr. Welding Inspector (CSWIP 3.2)

CONGRATULATIONS TO ALL OF YOU!!!

I hope that this will be the start of your Inspection Career. I wish you all the best!!!

The next schedule is tentatively on December 2008. Visit our site regularly for more information.

Thursday, June 5, 2008

11 Days to go for the Welding Inspector's Course

Hey guys, 11 more to go for the Welding Inspector's Course. Are you willing to face the challenge?
Come and join us!!! Welding is your future!!!
Email us at pwtc_luzon for booking and registration.

Saturday, May 31, 2008

JOB OPENING IN BRUNEI

Hey Guys, I just want to share some current job opening in Brunei. If you are qualified and interested please email rennah@brunet.bn. (NOTE) This is an excerpt from Borneo Bulletin.

1.) HSE Officers
2.) QA/QC Supervisor
3.) Painting Inspector
4.) Painting Technician
5.) Grit Blaster
6.) Welding Inspector
7.) NDT Technician
8.) Instrument Technician
9.) Mechanical Technician
10.) Mechanical Supervisor
11.) Mechanic
12.) Welders
13.)Machinist
14.) Semi-skilled (cutting/oxy cut)
15.) Electrical Supervisor/Inspector
16.) Electrical Technician
17.) Riggers
18.) Sales Engineer
19.) Workshop Manager

Minimum 5 years experience in Oil and Gas Industry.... Deadline of submission June 5, 2008

Wednesday, May 21, 2008

CTSA needs WELDING INSPECTORS & OTHER INSPECTORS

This is an excerpt from the email of Mr. Erwin. If you are qualified, please email Mr. Erwin directly..

Dear Sir,
We at CTSA provide highly qualified inspectors in various industries i.e. Petrochemicals, Oil & Gas, Offshore & Onshore, etc.Our Projects Area includes In-Kingdom & Outside Kingdom of Saudi Arabia.Pleased to inform that we are contineously hiring Inspectors (Welding, Mechanical, Electrical & Instrumentation, Civil, etc.).If there's anyone who are qualified and interested they can send their CV/resume by email erwin@ctsar.com or below fax. Please don't hesitate to contact us for further queries by checking our website www.ctsar.com.

Best Regards,
Erwin Dimaculangan

Tuesday, May 20, 2008

QA/QC Coordinator needed in Syria

Attention QA/QC Coordinators

Syria needs QA/QC Coordinator. Click the title of this post to check the full details. Please apply directly if you are qualified and interested.

Friday, May 16, 2008

Welding Tips

MIG Welding
1. Keep a 1/4 ­ 3/8 in stickout (electrode extending from the tip of the contact tube.)
2. For thin metals, use a smaller diameter wire. For thicker metal use a larger wire and a larger machine. See machine recommendations for welding capacity.
3. Use the correct wire type for the base metal being welded. Use stainless steel wires for stainless steel, aluminum wires for aluminum, and steel wires for steel.
4. Use the proper shielding gas. CO2 is good for penetrating welds on steel, but may be too hot for thin metal. Use 75% Argon/25% CO2 for thinner steels. Use only Argon for aluminum. You can use a triple-mix for stainless steels (Helium + Argon + CO2).
5. For steel, there are two common wire types. Use an AWS classification ER70S-3 for all purpose, economical welding. Use ER70S-6 wire when more deoxidizers are needed for welding on dirty or rusty steel.
6. For best control of your weld bead, keep the wire directed at the leading edge of the weld pool.
7. When welding out of position (vertical, horizontal, or overhead welding), keep the weld pool small for best weld bead control, and use the smallest wire diameter size you can.
8. Be sure to match your contact tube, gun liner, and drive rolls to the wire size you are using.
9. Clean the gun liner and drive rolls occasionally, and keep the gun nozzle clean of spatter. Replace the contact tip if blocked or feeding poorly.
10. Keep the gun straight as possible when welding, to avoid poor wire feeding.
11. Use both hands to steady the gun when you weld. Do this whenever possible. (This also applies to Stick and TIG welding, and plasma cutting.)
12. Keep wire feeder hub tension and drive roll pressure just tight enough to feed wire, but don¹t overtighten.
13. Keep wire in a clean, dry place when not welding, to avoid picking up contaminants that lead to poor welds.
14. Use DCEP (reverse polarity) on the power source.
15. A drag or pull gun technique will give you a bit more penetration and a narrower bead. A push gun technique will give you a bit less penetration, and a wider bead.


Aluminum MIG Welding
1. The best feeding of wire for aluminum is done with a spool gun. If you can't use a spool gun, use the shortest gun possible and keep the gun as straight as possible. Use Argon only for shielding gas. Only use a push gun technique when welding aluminum.
2. If you are having feeding problems, one thing you can try is a contact tip that is one size bigger than your wire.
3. The most common wire type is ER4043 for all-purpose work. ER5356 is a stiffer wire (easier to feed), and is used when more rigid, higher-strength weld properties are needed.
4. Clean the aluminum before welding, to remove the oxide layer. Use a stainless steel wire brush used only for cleaning aluminum.
5. Fill the crater at the end of the weld to avoid a crack. One way to do this is to dwell in the weld pool for a second at the end of the weld.


Self-Shielded Flux Cored Welding
1. Use a drag (pull) gun technique.
2. Keep the wire clean and dry for best weld results.
3. The weld is similar to Stick welding, in that a layer of slag must be removed from the weld after welding. Use a chipping hammer and a wire brush.
4. Self-shielded Flux Cored does not need shielding from an external cylinder of shielding gas. (The shielding is in the wire.) This makes it good for outside work, where external shielding gas could be blown away.
5. Self-shielded Flux Cored is generally harder to accomplish on thin metals than MIG welding.


TIG Welding
1. Good process for thin metal ‹ very clean process producing good looking welds.
2. Use Argon shielding for steel, stainless, and aluminum.
3. Use DC-Straight Polarity (DCEN) for steel and stainless. Use AC for aluminum.
4. Always use a push technique with the TIG torch.
5. Match the tungsten electrode size with the collet size.
6. Aluminum ‹ use a pure tungsten, AWS Class EWP (green identifying band). Will form a balled-end in AC.
7. Steel and stainless steel ‹ use a 2% thoriated tungsten, AWS Class EWTH-2 (red identifying band). Prepare a pointed-end for DCEN welding.


Stick Welding
1. Use a drag technique for most applications.
2. Take precautions with flying materials when chipping slag.
3. Keep electrodes clean and dry ‹ follow manufacturer¹s recommendations.
4. Common steel electrodes:
5. Penetration: DCEN ‹ Least penetration, AC ‹ medium (can be more spatter also), DCEP ‹ most penetration.


Plasma Cutting
1. Clean, dry, oil-free air is important.
2. Stay at recommended air pressure (more air is not necessarily better!)
3. Touch torch tip gently to workpiece.
4. When initiating a cut, start on the end of material to be cut and ensure arc has completely penetrated metal before proceeding further.
5. When completing cut, pause at the end to assure severance.
6. Torch should be perpendicular to workpiece.
7. Work cable should be attached as close to workpiece cut as possible.
8. If you can see the arc coming through the bottom of the cut metal, it will eliminate guessing if your travel speed is correct.


Resistance Welding
1. Resistance welding is not recommended for aluminum, copper, or copper alloys. Use for steel and stainless steel only.
2. For more heat (amperage output), use shorter tongs.
3. For units without a heat control, tong length can be used for a control. For instance, for thin metals where you want less heat, longer tongs can be used.
4. Keep in mind that longer tongs can bend, and you may lose pressure at the weld.
5. For the metals being welded, make sure there is no gap between the pieces ‹ this will weaken the weld.
6. Keep the alignment of the tongs straight, so that the tips touch each other exactly. Also, maintain a proper pressure adjustment ‹ not too much or too little pressure.
7. When you need one side of the weld to have good appearance, you can flatten (machine) the tip somewhat on that side.
8. Clean the tips on a regular basis, or you will lose output (amperage). Dress the tips with a proper tip dresser.

from: Hobart Welders and Miller Electric

QA/QC Team Leader needed in Trinidad

ATTENTION: QA/QC PERSONNEL

Trinidad is in need of QA/QC Team Leader

Please click the above title and email the advertiser directly if you are qualified and interested.

Welder Needed in Abu Dhabi

Attention Welders

Abu Dhabi needs WELDER. Please email directly the advertiser if you are qualified and interested. Please click the title of this post to see the vacancy.

Thursday, May 15, 2008

Bintan needed (2) Welding Supervisors

"Below is an excerpt of email from OWI group. If you are ineterested and qualified pls email her directly".
_____________________________________________________________________________________

We currently have openings for Welding Supervisor (x2) for our oil & gas EPC client in Bintan, Indonesia, and would like to enquire your interest.

You should have good experience in platforms .

Basic Info

- Work Location in Bintan, Indonesia

- Working hours is 60 hours per week min

- Salary to commensurate with your experience (Please advise in USD)

- Single status accomodation, transport, monthly food allowance, medical benefits, insurance, visa applications and mob / demob air tickets will be provided

- 6 months contract, subjected to extension

- Candidates working in Indonesia preferred

Info Required

- Earliest Availability / Notice Period
- Last Drawn Salary
- Expected Salary

Please submit a copy of your latest updated CV, and advising the info as above .


Kindly forward this email to any keen counterparts should you be unavailable to take up this position .


* We regret to inform only short listed candidates will be notified.

Thanks & Best Regards
Wong Yanyi (Ms)
Technical Recruiter

OWI Group (S'pore) Pte Ltd
60 Albert Street
#08-08 / 09 Albert Complex
Singapore 189969

Tel: +65 6336 0880
Fax: +65 6336 7667
Email: yanyi.wong@owigroup.com

Saturday, May 3, 2008

Welding Inspectors needed in South Korea

"Attention Welding Inspectors"

South Korea is in need of Welding Inspectors. Pls. click the ads title and apply directly if you are interested.

WELDING INSPECTORS are really in-demand nowadays. So, what are you waiting for? Come and join us on the upcoming Welding Inspector's Course to be conducted by HEATS on June 16-20, 2008 @ Tarlac City. Email us at pwtc_luzon@yahoo.com for booking and registration.

Monday, April 28, 2008

Welding Cast Iron

One of the most difficult to weld material is the cast iron. The carbon content of cast iron is 2-4%. This is the reason why cast iron is very difficult to weld.

When welding cast iron, the casting must be either kept cool or be allowed to cool slowly.

Temperature is very important factor in welding cast iron. At 1450 degrees F, cast iron tends to crack. Though during welding, the temperature reaches 1450 degrees F or above, it should not hold at that emperature for a long period of time, otherwise, cracking will occur.

Normally, cast iron is preheated prior to welding. The joint edges are preheated up to at least lesser than the critical temperature which is 1450 degrees F. The joint edges is preheated slowly and uniformly. Rosebud torch is advisable to be used. When the joint is uniformly preheated at required temperature, stitch welding (at low current) will commence. Stitch weld shall be done as short as possible until the weldjoint is completed. After completion, cool the weld at very slow rate of cooling. Covering it with welding blanket will be useful. Note: Do not cool the weld at high rate (by using water), otherwise, cracking will occur.

Another way of welding is by not preheating the joint. The joint should be kept cool but not cold. The temperature should be above normal temperature which is at least 95-100 degrees F. during welding, the temperature shall be controlled to 95-105 degrees F range. Don't make it hotter than 105 degrees F. Stitch welding shall also be done as hsort as possible. After completion of welding, cool it down at low cooling rate. Do not increase the cooling rate by using water, otherwise, crack may occur. Covering it with welding blanket is also helpful.

Another important factor in welding cast iron is choosing the right electrode. Nickel-type electrode is commonly used for this job.

NOTE: This is just a guideline. The author shall not be held liable for any outcome of this guidelines once it's used in the industry. It is advisable that PQR shall be run and WPS shall be prepared in accordance to the above guidelines to check if the metallurgical properties of the weld is acceptable.

Friday, April 25, 2008

10 WELDERS needed in Bintan INDONESIA

Below is an email which gives one more proof that WELDER is in demand. so what are you waiting for guys? Come and join us. Enroll to our Welder Course. Email us at pwtc_luzon@yahoo.com

This is an excerpt from OWI GROUP email. Please contact her directly if you are interested.....

We currently have openings for Welders (x10) for our oil & gas EPC client in Bintan, Indonesia, and would like to enquire your interest.

You should have good experience in platforms .

Basic Info

- Work Location in Bintan , Indonesia

- Working hours is 48 hours per week min

- USD 8.50 per hour, overtime rate at USD 10 per hour

- Single status accomodation, transport, monthly food allowance of USD 220, medical benefits, insurance, visa applications and mob / demob air tickets will be provided

- 6 months contract, subjected to extension


Should you be acceptable of the salary package, please submit a copy of your latest updated CV, and advise your earliest availability.

As there are many openings, kindly forward this email to any keen counterparts.

* We regret to inform only short listed candidates will be notified.

Thanks & Best Regards

Wong Yanyi (Ms)
Technical Recruiter
OWI Group (S'pore) Pte Ltd
60 Albert Street
#08-08 / 09 Albert Complex
Singapore 189969
Tel: +65 6336 0880
Fax: +65 6336 7667
Email: yanyi.wong@owigroup.com

Tuesday, April 22, 2008

52 more days for the WELDING INSPECTOR'S COURSE SCHEDULE

Hey guys, 52 more days to go for the Welding Inspector's Course. A lot of Welding Inspector Job vacancies are waiting out there!! This is the best opportunity for you! Grab it now and you will see your reward in future!!! Contact us for booking at pwtc_luzon@yahoo.com

Friday, April 18, 2008

STRUCTURAL WELDERS needed in Singapore

Hey guys, Singapore needs Structural Welders (click the title above to see the job opening).

Time is running, come and get that qualification. Enroll now for welder's training at PWTC, contact us at pwtc_luzon@yahoo.com

Wednesday, April 16, 2008

WELDING INSPECTOR JOB VACANCIES

Do you know how in demand a Welding Inspector is? Click the title above, and in the search column, type job, and welding insepctor, and you can find job vacancies for welding inspector around the world for filipinos.

DO YOU WANT TO BE ONE OF THEM? JOIN US FOR THE UPCOMING WELDING INSPECTOR'S COURSE ON JUNE 16-20, 2008 to start your career as a Welding Inspector.

Contact us for booking at pwtc_luzon@yahoo.com

59 More Days for the WELDING INSPECTOR'S COURSE

59 more days to go for the most awaited WELDING INSPECTOR'S COURSE... contact us for booking at pwtc_luzon@yahoo.com

WISCOGLOBAL IS IN NEED OF SITE QC ENGINEER

Below is an email of my previous boss. He is looking for Site QC Engineer. If you are interested, please contact him personally.


Richard Kemp wrote:

Hello Jhun,

Hope all is well with you. In relation to the below email history would you by any chance know of anyone that may meet the requirements setforth. Looking forward to hearing from you soon.

With best regards,

Richard Kemp
General Manager
WISco SE Asia
Bus: +65 6479 8403
Mobile: +65 9152 6015


I would be most grateful if you could present Filipino candidate CV's in relation to the below job description. A Good history of E&I experience will be a big plus. This assignment request should last 21/2 to 3 years. The assigned location is in Qatar. Looking forward to hearing to hearing from you.

1.1 SITE QUALITY CONTROL ENGINEER
Mission: The role of the Site QC Engineer is to liaise with all construction QC personnel to ensure all quality functions of the project within the guidelines of the Project Procedures and Project specific quality documents.
Reports to: Site Quality Manager
He shall:
a) Ensure that Quality Control Systems are implemented and maintained in accordance with the defined project standards and specifications.
b) Foresee action to prevent the occurrence of any nonconformance.
c) Review the preventative actions recommended in nonconformance reports, follow-up and verify corrective actions to prevent reoccurrence of nonconformities.
d) Populate, administer and control the site nonconformance control database.
e) Collate information to be included in weekly, bi-weekly and monthly reports.
f) Initiate, record and provide solutions for quality problems.
g) Ensure that all QC personnel including sub-contractors follow the quality control system.
h) Carry out inspection surveillances on sub-contractors premises.
i) Expedite and review the preparation of ITP’s and Field Inspection Procedures.
j) Liaise with JV Company assigned QC personnel to ensure that specified requirements are complied with.
k) Witness Welder and Welding Procedure Qualifications.
l) Ensure welders are qualified to the material, dimensions and welding processes being used.
m) Ensure Material Traceability measures are being recorded for all permanent material.
n) Ensure all welding consumables are correctly stored, controlled and issued.
o) Conduct or join periodic audits on site activities.
p) Day to day site surveillance.
q) Monitor and follow-up on all inspection records that are to be uploaded into the Comet mechanical completions database.
r) Be proactive in the compilation of construction dossiers.
s) Liaise with site QC Engineers on the day to day functioning of inspection activities.
t) Expedite all QC activities to ensure there are no compromises to quality.

Tuesday, April 15, 2008

Thinkenergy is looking for TIG WELDER

Hello again! Since you last visited our site, we have recently received
a job from one of our clients that could be a potential fit for your background, or for someone
you know. Please read the following and apply accordingly:

Position: Welder : Piping
Priority: HIGH
Job #: 65768JM1

APPLY TO THIS JOB NOW click the link above

To see other WELDERS jobs click here:
copy and paste the below link.

http://www.thinkenergygroup.com/think.nsf/jobs1?openform&v=(dav)&cat=Welders&Count=900&frm=H01


from: thinkenergy group

Monday, April 14, 2008

WELDERS IN DEMAND, SCHOOLS OFFER TRAINING

I have one more proof that WELDERS ARE IN DEMAND LOCALLY AND OVERSEAS. Below news was taken from Cebu Daily News.

WHAT ARE YOU WAITING FOR? COME AND JOIN US IN PWTC, ENROLL NOW!!! YOUR FUTURE IS IN WELDING.

email us for booking: pwtc_luzon@yahoo.com

Below news was an excerpt from Inquirer.

By Cris Evert Lato
Cebu Daily News
First Posted 01:42pm (Mla time) 02/27/2008


CEBU CITY, Philippines - The local and international demand for highly skilled welders has prompted private and public institutions to offer welding courses to interested individuals and companies.

Girlie Morano, assistant administrative officer of Technical Education and Skills Development Authority (Tesda) Region 7, said they continue to have trainees for welding at Tesda training center under Training for Work Scholarships project.

Morano said the center has 25 trainees in partnership with Aboitiz Construction Group-Metaphil Division (Metaphil).

The training lasts for two months and teaches shield metal arch welding (SMAW), the basic welding course.

The center was able to produce 125 SMAW graduates last year, 50 of whom were able to earn jobs in Australia.

On the other hand, the University of Cebu (UC) has tied up with Norwegian company, Unitor to establish a welding school.

UC president Augusto Go said the partnership enabled the university to be the recipient of free equipment from a group of Norwegian shipowners.

Go said UC has invested P20 million in additional equipment and machineries for the school.

“(We established the school) to take advantage of the high demand for welders in Australia and Canada,” he told Cebu Daily News.

Aside from international opportunities for welders, Go said graduates of welding courses can also get jobs from Cebu-based companies such as Metaphil and Tsuneishi Heavy Industries in Balamban town, northern Cebu.

Lawyer Baldomero Estenzo, welding school manager, said the demand for welders will continue as “welding is a support industry for shipping.”

The school will officially start classes on the second week of March 2008 and can accommodate a total of 14 students at a time since there are 14 welding machines available, he said.

Fees range from P2, 500 for one-day course to P28,000 for a two-week course.

Engineer Celso Hayag, training director, said students admitted to the school should have basic welding skills since the school will be teaching advanced welding courses.

He said the welding school has five instructors capable of teaching advanced welding courses and have underwent series of trainings with Unitor personnel.

Go said more job opportunities will be made available to skilled welders in the Visayas and Mindanao as Korean company, Hanjin Heavy Industries and Construction Corporation builds a $2 billion shipyard complex in Mindanao.

Edward Dampor Sr., general manager of Brilliant Metal Craft and Machine Design (BMC), said his institution is also preparing students to be more equipped as countries including Denmark, New Zealand, Japan and Middle East need more welders.

Dampor, a recipient of Galing Pinoy Award of Tesda 7, said there is close to a million job opportunities for welders worldwide.

In the Philippines, he said, around 300,000 welders are in demand with Subic in Pampanga needing most of the welders.

Dampor said a 45-day SMAW course costs P30,000 while a three-month advanced welding course costs P63,000.

WANTED: MECHANICAL ENGINEER

HEATS is looking for Mechanical Engineer (fresh graduates are welcome). Pls. respond to this ads if you are interested, or email your cv and asking salary to pwtc_luzon@yahoo.com

Location of Work: TARLAC CITY (preferably live near to this place)
Salary: State your asking salary

62 more days to go for WELDING INSPECTOR COURSE

The WELDING INSPECTOR'S COURSE which is scheduled on June 16-20 is 62 more days to go!!!

What are you waiting for? Come and join us the course!!! This is a preparation for your dreamed overseas job.

contact us: pwtc_luzon@yahoo.com

Sunday, April 13, 2008

SALARY RANGE OF WELDING INSPECTOR

LOCAL JOB (PHILIPPINES)
Beginner – P5,000 to P8,000
Experienced – P8,000 to P12,000
Experienced and CSWIP or AWS Certified – P15,000 to P40,000 depending on company

OVERSEAS
First timers – P30,000 to P40,000
Experienced – P40,000 to P60,000
Experienced and CSWIP or AWS Certified – P60,000 up to P250,000

So, what are you waiting for?

ARE YOU READY TO FACE THE CHALLENGE?

YOUR FUTURE IS IN WELDING?

JOIN PWTC!!!

ENROLL NOW!!!

CONTACT US:
Email: pwtc_luzon@yahoo.com

Friday, April 11, 2008

Welding Inspector's Course Schedule

Two months to go! Contact me at pwtc_luzon@yahoo.com if you are interested. Click the title above for the TRAINING DETAILS.

Thursday, April 10, 2008

When should I use 308L, 309L or 316L filler metal?

308L (including ER308LSi) is predominately used on austenitic stainless steels, such as types 301, 302, 304, 305 and cast alloys CF-8 and CF-3. For high temperature applications such as in the electrical power industry, the high carbon 308H electrode provides better creep resistance than does 308L.

316L (including ER316LSi) filler metal should be used with 316L and 316 base metals. CF-8M and CF-3M are the cast equivalents of 316 and 316L, respectively.

Use 309L (including ER309LSi) when joining mild steel or low alloy steel to stainless steels, for joining dissimilar stainless steels such as 409 to itself or to 304L stainless, as well as for joining 309 base metal. CG-12 is the cast equivalent of 309. Some 308L applications may be substituted with 309L filler metal, but 316L or 316 applications generally require molybdenum and 309L contains no molybdenum.

Type 347 stainless steel filler metal is ideal for 347 and 321 base materials because it matches these stabilized grades. CF-8C is the cast equivalent of 347. Type 347 filler metal is also suitable most 308L filler metal applications.

(excerpts from: Lincoln Electric)

Tuesday, April 8, 2008

Welding Oven

The frequently asked question about welding oven is, why welding oven is needed?

Welding Oven is very critical to any welding job especially when low hydrogen electrodes are being used. Hydrogen cracking can be avoided by having this stuff and by baking the electrode and store it in a holding oven to keep low hydrogen electrodes dry. Hydrogen cracking is likely to occur when the low hydrogen electrodes that are used are wet or the moisture content is above the required limit for a low hydrogen electrode. The moisture content will be controlled if the low hydrogen electrodes are baked and stored in a holding oven prior to usage.

BENCHMARKING

There is a notion about benchmarking wherein you will just visit a company and try to imitate their practices and hope for improvement. Remember that benchmarking is a mutual learning process. You must ensure that both parties will learn from each other to attain its maximum benefits.

Suggestion for Benchmarking

Review the processes under study and identify your best practices as well as your practices that need improvement.

Come up with a list of prospective companies, whom you think has the best approaches to the process under study.

Take a look also on what your competitors are doing (not directly, of course) (I suggest you visit companies who won the “Philippine Quality Award”. They are open to those who want to benchmark their practices).

Come up with your benchmarking objectives and communicate it with your prospective companies so that they will know the purpose of your visit.

Make an itinerary of your visit and communicate it to the company in advance before the visit (one week lead time is preferred). You must list down in advance, all the process details needed to be observed.

During the visit, be able to share first your best practices so that they can also learn from you and brief them on your benchmarking objectives. Stick with the itinerary and note down all the observations based on the company’s actual practices. You must ensure that the objectives are met before you leave the company.

After the visit, compare your practices against the companies you’ve visited. It is important that you have a judgment criteria on its applicability whether you will adopt the process 100%, modify the process to suit you own, or stick with you own process and find some other ways to improve.

Implement the best applicable practices and monitor the results.

Don’t forget to thank the companies you have benchmarked and report to them the improvement you have made based on their inputs.

After a series of continual improvements, repeat step 1.

COURTESY OF PARENG RAMSEL

High-paying jobs await HS graduates who takes vocational courses

As what I am telling since I started this site, WELDING is one of the high-paying jobs in overseas especially in Middle East. The news (SEE BELOW NEWS HEADLINE FROM PHILIPPINE STAR, or CLICK THE TITLE ABOVE TO GO DIRECTLY TO PHILIPPINE STAR) is one of the proof that what I am saying is a reality.

The Welding Training Institute of Tarlac will soon to open to cater the needs of these High School graduates who want to pursue their welding career here and in overseas.

If you are from Tarlac and keen to study or keen to take a Welding Trainig Course (Shielded Metal Arc Welding-SMAW), just keep me informed in this site and I will help you build your future in welding as a WELDER, for those degree holder who who want to pursue their Welding Inspetion and QA/QC Career, I can help you build your future in Welding Inspection. I will run a Welding Inspector's Course on June 16-20. Come and join me in the training. Keep me informed in this site so that I can cater your needs.

The Welding Training Institute of Tarlac will soon to open in Tarlac City. You are welcome to attend all the training in my Institution once it is started.


TAKEN FROM PHILIPPINE STAR - ARTICLES



Headlines
High-paying jobs await HS graduates who take vocational courses

Tuesday, April 8, 2008
High-paying jobs abroad await new high school graduates who will opt for shorter but in demand vocational courses, the local recruitment industry reported yesterday.

Recruitment companies said Filipino high school graduates who take vocational courses that are in demand in money-rich countries in the Middle East will have a better a chance at lucrative employment abroad.

Lito Soriano, president of LBS-E Recruitment, said high school graduates should consider taking technical vocational courses at this time if they want lucrative job opportunities.

“The Philippines can take advantage of the pressing need for skilled workers in trillion-dollar projects in the Middle East if many of our high school graduates will shift to schools offering tech-voc subjects like auto servicing, technical drawing/drafting, building wire installation, shielded metal arc welding, machining, pipefitting, metal craft, and carpentry,” Soriano pointed out.

At the moment, Soriano said the country is unable to meet job orders abroad due to the shortage of workers with vocational skills. “Recruitment companies are already competing with each other for the very few skilled workers for their job orders mainly from the Middle East,” he disclosed.

Soriano explained that most foreign employers are looking for highly-qualified construction workers such as welders, flame cutters, pipe fitters, and carpenters due to construction booms in various countries abroad.

He called on the government to undertake massive training programs to enable the country to meet the growing global demand for highly skilled workers. — Mayen Jaymalin

Monday, April 7, 2008

What is Quality?

From the ISO 8402 Definition

Quality is:

The totality of characteristics of an item that bear on its ability to satisfy stated and implied needs

Sunday, April 6, 2008

Lamellar tearing

Occurence of step-like crack. This problem involves poor "through thickness" ductility and visually occurs in tee or corner joints thick ferritic steels where high shrinkage starins act through the plate thickness in combination with parent metal inclusion.

Saturday, April 5, 2008

What is Film Artefacts?

Film artefacts are images form during radiography and film processing which are not a defect or a change in component thickness.

Example of film artefacts are;

Streakiness
Crimp Marks
Drying Marks
Diffraction Mottling
Dirty Intensifying Screens
Static Marks
Solarization
Reticulation
Chemical Splashes
Water splashes

Causes of Weld Spatters

The following are some of the causes of weld spatters.

1.) Current is excessive
2.) The electrode is damp
3.) Contamination
4.) Arc blow

Thursday, April 3, 2008

Two Types of Testing

1.) Destructive Testing
2.) Non-destructive Testing

DESTRUCIVE TESTING
As the word implies, specimens tested by destructive testing, the specimens are destroyed during the test and are worthless after the test. Example of destructive testing are; bent test, tensile test etc

NON-DESTRUCTIVE TESTING
The quality of specimens are tested without destruction. Example of non-destructive testing are; radiographic testing, magnetic particle testing, penetrant testing, ultrasonic testing and eddy current testing

Each method of NDT (Non-destructive Testing) has its own advantages and disadvantages. Choosing the method to be used depends on the data of items to be tested.

Blogger UT-Man is an expert in UT and other NDT methods.

Welding Inspector's Course Schedule

I will be conducting Welding Inspector's Course on June 16-20, 2008 @ Sn. Vicente, Tarlac City.

If you are interested in attending this course, please feel free to contact me or post in this site.

This course is intended for graduate engineers, engineering students, graduate of any 4 year degree who wants to pursue their career in Welding Inspection and QA/QC.

The course content are; Duties and responsibilities of a welding inspector; welding processes; weld defects; types of steel; weldability; heat treatment; visual inspection; testing parent metals and welds; destructive tests; NDT techniques; welder and procedure approval; codes and standards; safe working practices

The course Fee is P5,000.00 inclusive of snacks, lunch and training material.

Causes of Lack of Fusion

1.) Joint preparation is too narrow
2.) Insuficient cleaning of weld joint
3.) Oily weld joints
4.) Poor welding technique
5.) Magnetic Arc Blow
6.) Wrong welding parameter settings

What is Welding Discontinuity and Welding Defects?

Discontinuity - an objective lack of material, an interruption in the physical consistence of a part.

Defect - an excessive conditions, outside the acceptance limits, which risks to compromise the stability or the functionality of the welded structure

Tuesday, April 1, 2008

TIG Welding

Advantages of TIG Welding

High quality welds, low distortion
Easy to mechanize and automate
Flexibility and ease of heat control
All metals, all positions

Limitations of TIG Welding
Lower deposition rates
Good skills required
Sensitive to cleanliness and contamination
Arc blow sensitive

Polarity
The Tungsten Electrode in Gas Tungsten Arc Welding (GTAW or Tig) can make contact with a Direct Current (DC) power supply either at the positive (+) or at the negative (-) terminal. In the first case the connection is for DCEP (electrode positive) or reverse polarity. In the second one for DCEN (electrode negative) or straight polarity.

DCEP:
30% of the heat is concentrated in the workpiece
70% of the heat in concentrated in the tungsten electrode
Shallow penetration
Wide weld area

DEN:
70% of the heat is concentrated in the workpiece
30% of the heat is concentrated in the tungsten electrode
Deep penetration
Narrow weld area

Tungsten Electrodes
A few tungsten alloys are used as electrodes for GTAW (tig welding). They are non consumable as they do not enter, intentionally, in the composition of the weld pool. Their function is limited to carry the currents employed, to stand the heat of the arc without melting and to provide electrons by thermionic emission.

Filler Wire
Manual GTAW is often performed autogenously (without added filler metal) when the joint requires only fusion of the abutting ends. However when needed, filler material can be added manually from the side, right in the weld puddle, by alternatively introducing the wire tip into the arc and withdrawing it.

Shielding Gases
The shielding gas is provided continuously through the torch to protect the molten weld metal, the tungsten electrode and the filler wire tip, if used, from air contamination. Backup shielding gas may be provided if necessary on the underside of the weld to purge and displace surrounding air.

Shielding is always needed but it may be critical especially for highly reactive metals like titanium that would be promptly oxidized and ruined if heated in air. To weld titanium by GTAW use is made of glove boxes purged with shielding gas of the highest purity before weld start or of trailing shields, specially designed accessories that provide a sufficient gas trail to protect the welded surface until cool enough.

The gases uses are mostly Argon and Helium or mixtures of the two. Argon is the standard shielding gas. Helium, which is lighter than air, must be supplied with a higher flow than argon because it tends to rise. It transfers more heat than argon for the same current and voltage. Thus it may be needed to join metals of higher conductivity or heavy plates.

When extinguishing the arc at the end of the weld, it is important to let the gas flow for a certain time to shield the hot metal from air. Equipment provides a delay before shutting off the gas flow, but the welder must linger with the torch upon the weld as long as needed.

Materials
Most weldable metals can be welded by the GTAW process. It is adaptable to thin and delicate joints but also to thick and demanding applications, always of good quality although possibly not the most fast and economic process.

Aluminum alloys of the weldable kinds are among those for which GTAW is most suited. One should always remember that not all aluminum alloys can be welded successfully or with the same ease. For a reminder of the reasons making some of the strongest alloys non readily weldable by fusion processes see Aluminum Welding.

Joining is made difficult by the surface formation of tenacious refractory aluminum oxides of melting point much higher than that of aluminum metal. The oxides though are broken up by the cathodic cleaning action of the Electrode Positive part of the alternating current cycle. Once broken they may float upon the molten metal and they no longer interfere with the welding process. Therefore high frequency stabilized alternating current power supply is the most used GTAW process for aluminum with pure tungsten electrodes. Exceptionally, for thin sections, DCEP can be used with thoriated tungsten. Argon is the most used shielding gas.

By: PWL

Materials and Welding for Cryogenic Service

Vessels and pipelines designed to operate at very low temperatures(cryogenic) must be fabricated from materials and with techniques suitable to the service conditions.

The problems connected with the behavior of normal steels at low temperatures were first brought to attention at the end of World War II, when eight ships of the Liberty class where involved in spectacular disasters by their sudden brittle fracture in two parts under conditions of cold weather and high seas.

The investigations that followed were instrumental in discovering a new property, unheard of up to that time, called Fracture Toughness. Furthermore it was found that, in certain materials, ductility is strongly dependent upon temperature.

A special Drop-Weight Nil-Ductility-Test was introduced to help rating materials and processes and to determine the temperature above which a dynamic crack is arrested.

In normal steels perfectly ductile at room temperature, a gradual passage to brittle fracture susceptibility upon impact was found, strongly dependent on decreasing temperatures. The temperature range where this phenomenon occurs has been called the Ductile to Brittle Transition Temperature (DBTT). Structures made for service at low temperatures must therefore be made of materials that maintain adequate ductility at sub freezing conditions. Cryogenic alloys include austenitic stainless steels, manganese stainless steels, 9 Nickel steels, maraging steels, titanium, aluminum and nickel alloys.

A low cost way to measure the resistance of a weldment to impact fracture is performed by means of an Impact Toughness Testing on a specimen of specified geometry like the Charpy V-notch (CVN) test (ASTM E23). The amount of energy absorbed at any specified temperature during fracture is measured and recorded.

This test does not measure an inherent material property but results in a relative measure of impact toughness. The results permit to rate different materials and procedures in a database to be used for design and for inspection.

The specimen is oriented to have the notch and the expected plane of fracture run longitudinally through the weld metal. The test is conducted on welded specimens at the specified low temperature. The CVN absorbed energy result should be at least as specified by the requirements.

Cryogenic Tanks are used for Liquefied Natural Gas (LNG), Cryogenic Ammonia and other products at cryogenic temperatures for storage and/or transportation.

by:PWL

My blog address

www.filipinoweldingclub.blogspot.com

My blog website

This is my blog address: www.filipinoweldingclub.blogspot.com

In-Demand Job in Oil & Gas Industry

Did you know that the most in-demand job in the Oil and Gas Industry are Welders and Welding Inspectors?

In Philippines alone, when you check the classified ads of Manila Bulletin every sunday, you can see a lot of vacancies for welders and Welding Inspectors (or in general, Inspectors). These vacancies are either local or overseas jobs.

Correct me if I am wrong. Check the Manila Bulletin every sunday to see it for yourself.

Some Welding Codes and Standards normally used in Construction

1.) AWS D1.1 - For Structural Welding
2.) API 1104 - For Pipeline
3.) ANSI B31.3 - For Process Piping
4.) ANSI B3.1 - For Power Piping
5.) ASME VIII Div. 1 - For Pressure Vessel
6.) API 650 - For Storage Tank

Saturday, March 29, 2008

Tips on how to become a Certified Welding Inspector

This job is applicable for graduates of any engineering course:

1. Upon graduating and engineering degree, apply as NDT Trainee in any NDT companies even for at least 6 months. Make sure you learn all the NDT Methods and welding processes in that 6 months including code and standard interpretation.
2. Attend Welding Inspector Course.
3. Apply for a Welding Inspector job in Saudi Arabia even for at least 1 to 2 years to get a good work experience.
4. Attend CSWIP 3.1 course and pass the examination.
5. When you passed the CSWIP 3.1 course, you will be called CERTIFIED WELDING INSPECTOR

Friday, March 28, 2008

Parts of a Groove Weld

Basic Weld Joints


1.) Butt joint
2.) Corner joint
3.) Tee joint
4.) Lap joint
5.) Edge joint

Prevention of Hydrogen Cracking

1. Preheat the joint
2. Conduct Interpass and PWHT
3. Use low hydrogen electrodes

Tuesday, March 18, 2008

Career in Welding Industry

Here are some career in Welding Industry

1. Welder
2. Welding Inspector
3. Piping Inspector
4. Structural Inspector
5. Tank Inspector
6. Pressure Vessel Inspector
7. NDT Inspector
8. NDT Technician
9. Sr. Welding Inspector
10. QA/QC Engineer (Welding)
11. Sr. QA/QC Engineer (Welding)
12. QA/QC Coordinator
13. QA/QC Manager
14. Welding Supervisor
15. Welding Engineer
16. Welding Superintendent
17. Welding Manager

Few Tips on how to become a WELDER

1. Attend training in welding. As a start take the SMAW (Plate) course which normally conducted in at least 240 to 300 hours.

or

Join a fabrication company as a helper. While being a helper, start to learn welding by doing it during your breaktime (with the permission of your supervisor)

2. Daily practice can make you more proficient.

Common Causes of Hydrogen cracking

1. Hydrogen generated by the welding process
2. Hard and brittle structure
3. Residual tensile stresses acting on a joint

Saturday, March 15, 2008

Weld Defects

1. Undercut
2. Porosity
3. Slag Inclusion
4. Lack of Penetration
5. Lack of Fusion
6. Lack of Roor Fusion
7. Tungsten Inclusion
8. Hydrogen Cracking
9. Lamellar Tearing
10. Reheat Cracking

Welding Positions - Pipe & Plate

PIPE WELDING

1G - Horizontal rolled position

2G - Vertical Position

5G - Horizontal Fixed Position

6G - Inclined (45 degrees) Position

6G - Inclined (45 degrees) Position with restriction ring

PLATE WELDING

1G - Flat Position

2G - Horizontal Position

3G - Vertical Position

4G - Overhead Position

Philippine Welding Practitioner Association

To all Welders, Welding Inspectors, NDT Technicians, Trainee Welders, Welding Enthusiast and Quality Practitioner

Mga Kaibigan,

Nais nyo bang magkaroon tayo ng sarili nating Association para sa ikabubuti ng bawat practitioner?

Ang layunin nito ay;

1. Upang magkaroon ng information sharing about job vacancy, training at welding knowledge.

2. Upang magkaroon ng magandang samahan ang bawat kasapi.

3. Upang matulungan ang mga kasaping naghahanap ng trabaho, sa loob man o sa labas ng bansa.

Welding Training Center - Mahalaga ba sa mga Filipino?

Sa aking mahigit sampung taong pagta-trabaho bilang isang QA/QC Personnel (Mechanical/Welding/Civil/Structural) sa Pilipinas, Gitnang Silangan at ASEAN Countries, napansin ko na maraming kumpanya ang nangangailangan ng mga WELDER. Karamihan sa mga welder na kinukuha ng mga kumpanya ay Filipino, Indian, Thailander, Indonesian, Malaysian at Pakistani. Sa aking pagmamasid, mas gusto ng mga kumpanya ang mangagawang Filipino una, dahil sila ay marunong makipag-usap sa ingles, pangalawa, dahil sila ay magagaling na mga welder.

Subalit sa kasalukuyan, mahirap ang makakuha ng mga filipinong welder. Ang mga welder na magagaling ay nasa labas ng bansa at ang iba ay nasa malalaking kumpanya sa Pilipinas. Bunga nito, mayroong krisis sa availability ng mga magagaling na mga filipino welder.

Kaya sa ganang akin,napakahalaga ng Welding Training Center sa mga filipino upang magakroon ng lugar na pagsasanayan ng ating mga kababayan. At mas makakabubuti at makakatulong kung ang mga out of school youth ang magsasanay sa mga training centers na ito. Makakatulong ito para sa mga kababayan natin at para bumaba ang antas ng mga walang trabaho sa Pilipinas.