Flange repair welding
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For A105 flange repair welding, the surface machining dimensions of the flange are incorrect; is it possible to carry out repair welding without PWHT?；
It’s not very suitable; there are issues with the patch welding. Buy a new one instead
The pressure isn’t too high; the third floor seems feasible
Are there any issues with the flange welding? Isn’t it supposed to be welded in the end?
The description is unclear; is it a surface processing error? What’s the error? It’s best not to perform welding repairs, as this can cause stress and deformation. If welding repair is indeed necessary, the sealing surface must be re-machined.
One can check the standards for forgings in this regard; generally, it is permissible to carry out weld repairs on defects present on the surface of forgings. As for whether reheat treatment or preheating measures are necessary, this depends on the depth and area of the weld repair required.
A105: Heat treatment is required after patch welding