Regarding the heat treatment time after cladding of the tube sheet
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Dear everyone, how is the holding time for stress-relief heat treatment after tube sheet surfacing determined? Some design documents specify it as the tube sheet thickness plus the surfacing layer thickness. I think the butt welds can be considered in this way, but for surfacing welding, isn’t it taking too long to consider the thickness of the tube sheet? I would appreciate it if those who are aware could offer some advice
Link: http://bbs.hcbbs.com/thread-671458-1-1.html. I agree with the view in post 2.
I think it has to do with the material of the base metal and the material used for surfacing; everything else is secondary
The heat treatment mentioned here is the stress-relief treatment after cladding of the tube sheet, and it is not a heat treatment intended for other purposes.
That’s not the same either; can chrome-molybdenum steel and Q345 be the same?