I have a problem during fabrication of steel structure We are using carbon steel and we conduct UT just after welding The problem is after UT we usually do some correction in dimensional with heating Is there any affect to that weld?I was afraid heating raise some defect and we could not found it. any of you has experience with my problem, was it better to conduct UT after heating?
If the heating and cooling are not conducted properly, there can be changes in the microstructure that could conceivably result in cracking. The chances are slim if the base metal is low carbon steel.
Al is correct. And it also depends on the heating temperature, code compliances and materials ( such as the B31's and chrome molys, etc. If you are getting it too hot you may be required to UT after heat treatment.
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