Dear Experts,
A Ring of diameter 4 m ( 82.6 mm thickness welded with 25 mm thickness) had crack to the length of 4 m on the welded area after PWHT.
After analyzing the reasons , while doing PWHT at the time cooling stage, temperature maintained was 86.7 degree instead of 80 degree Max..
Is this is the reason for the crack.
Experts please clarify the reason and solutions.Awaiting the response at the earliest.
Regards / Haja M.
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