Back-deformation of tube sheet cladding
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Gentlemen: Do you have any empirical data on counter-deformation? Share it with me. Thank you!
I’ve done this many times; there’s no way to reverse deformation. The only options are to use rigid fixation methods and proper process parameters to reduce deformation, as well as leaving more machining allowance.
It’s difficult to determine this value, as there are many influencing factors such as the diameter and thickness of the tube sheet, the thickness of the surfacing layer, the surfacing method, welding process parameters, and post-weld heating; these factors result in significant variations.
There is no data available; manufacturers usually fix it to a rigid substrate on both sides for surfacing welding in order to prevent thermal deformation
Deformation after cladding can only be corrected through post-weld processing
Leaving more machining allowance – a great experience to share