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Moonby86
Associate

Join Date: Mar 2011
Posts: 36

Welding for Cr-Mo Steel & Clading Plate

05/25/2011 1:54 AM

Hi, all

Cr-Mo steel is very sensible to crack. What is the reason to be sensible to crack when welding? Only thanks to welding heat? Please some one give me some advice.

Also, what is caution point to welding for cladding plate, base plate Cr-Mo steel with stainless steel? In order to weld stainless steel clad, what is the suitable width of declading? Please tell me your experience. Thank you kindly,
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Mukesh0861
Power-User

Join Date: Dec 2010
Posts: 377
Good Answers: 20
#1

Re: Welding for Cr-Mo Steel & Clading Plate

05/27/2011 12:41 PM

Cr-Mo steels, when welding, if thermal gradient is not maintained, due to fast cooling, become hard and hence become senstive to cracking. For maintaining the proper thermal gradient, pre-heat, post heat and interpass temperatures are important to maintain so that heat of the weld joint is lost slowly and the grain structure get sufficent time to grow to maintain the hardness of weld joint within limits.
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