Dear experts.,
Recently I came to know that PWHT does not change the micro structure of weld seam or HAZ.
Please reply me regarding metallurgy of PWHT of weld seam and HAZ in C.S and low alloy steel.
Please clarify why PWHT required for C.S and low alloy steel.
What is residual stress?
How do we remove residual stress during PWHT?
Sandeep.M.V
QA/QC Engineer
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