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Re: [MW:14047] crack in weld during fillet welding in E-450 grade plate

By Materials & Welding
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

--- On Tue, 4/3/12, pawan <pawan.tiwari@dwekam.org> wrote:

From: pawan <pawan.tiwari@dwekam.org>
Subject: [MW:14044] crack in weld during fillet welding in E-450 grade plate
To: materials-welding@googlegroups.com
Date: Tuesday, April 3, 2012, 10:49 AM

Dear experts,

 

Please suggest the welding procedure and welding parameters to weld E-450 grade steel plate through saw wire (EA-2) and flux (agglomerated-F8A2-EA2-A2).

 

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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