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.

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

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

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WELDING INSPECTOR JOB VACANCIES

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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.

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

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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