Issues regarding the welding groove shape of stainless steel composite plates
Thread Content
There is a atmospheric pressure tower made of 16MnR+316L material with a thickness of 26 mm. The groove type to be used is specified in JB4709-2000. Is it necessary to carry out stripping, welding, and surfacing at the groove area? Will not stripping affect the quality of the welding?
It meets the requirements of JB4709-2000.
You may refer to GB/T985.4-2008 \"Recommended Grooves for Composite Steels\"
Not peeling off the surface actually has no impact at all. When welding the base layer, make sure that the weld does not go above the interface between the overlay layer and the base layer; it’s better if it is about 1 mm below that interface. This requires a higher level of skill from the welder, in order to prevent the base material from penetrating into the overlay layer or to ensure that the thickness of the overlay layer weld is sufficient.