Welding issues after surfacing heat treatment
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The ends are welded to the laminates through heat treatment; generally, a transition layer is weld-on at the ends. After this weld-on and subsequent heat treatment of the ends, they are then welded to the laminates. I wonder if heating the ends again in order to weld them to the laminates will not destroy the heat treatment state achieved earlier?
There are too many typos, so it’s hard to understand. If shims are required for the overall heat treatment equipment, they should be welded in place before heat treatment; welding on the shims is allowed afterward.
Stainless steel can be cladded first, followed by heat treatment before welding
I think the original poster has confused the concepts of post-weld heat treatment and heat treatment condition. The heat treatment condition is related to the mechanical properties of the material, whereas post-weld heat treatment is primarily related to welding residual stresses. Welding does not change the overall heat treatment condition of the material. Some residual welding stress always remains after welding, but it is not necessarily unacceptable.
Intermediate heat treatment is intended solely to eliminate residual stresses resulting from welding, as well as to refine the micrograins without altering the properties of the material itself.