Friction surfacing, joining to ceramics and Bobbin stir welding

摘要

Two more variants of friction stir weiding that are becoming increasingly popular are friction surfacing, where the rotating tool is a consumable that is spread on the surface, and Bobbin stir welding, where the tool goes right through the parts to be joined, so there is no need for an anvil support plate. Friction surfacing is mainly used to apply a metal coating to a metal substrate. The coating material can either be used as is, as a coating that can be extruded with the substrate, or as a joining material.