Thanks for reply.
Yes, they are preheating the plate in 100-150deg. before welding.
Even after they are facing crack problem.
Please advice.
Rgd
PT
From: materials-welding@googlegroups.com [mailto:materials-welding@googlegroups.com] On Behalf Of prem nautiyal
Sent: Tuesday, April 03, 2012 2:22 PM
To: materials-welding@googlegroups.com
Subject: Re: [MW:14047] crack in weld during fillet welding in E-450 grade plate
| Hi The TC of your plate reveals that the C.E is 0.47. Any steel with C.E > 0.4, the weldabilty becomes difficult and requires preheat. The preheat temp. is missing in your parameter chart. I would suggest a min. preheat of 100 - 150 degrees Celcius before welding. Please try out and give feedback. Regards Prem Nautiyal
Also, please find here with the attachment of joint details and plate test certificate for your ready references. Because, we are facing the problem of weld cracks in patches during 9 mtr continue fillet welding. If you need any more details please write to us. T&R PT -- |
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