Local heat treatment for fillet welds?
Thread Content
The main body of the equipment is made of δ30, 16MnR material, while the nozzles are forged from δ60 material. Welding procedure qualification for thicknesses ranging from 30 to 60 mm requires heat treatment; however, the equipment itself does not need heat treatment. When developing a welding procedure, it is possible to use a welding procedure qualification method suitable for thicknesses of 30–60 mm along with local heat treatment – is this approach feasible? Without heat treatment, only the weld procedure qualification for 18-48 mm is available.
For fillet welds, should only the wall thickness of the cylinder be considered, or both the wall thickness of the cylinder and that of the nozzles?