This kind of solidstate welding. Regarding friction heat as heated source twofriction workpieces' surfaces are heated to the plastic stage by mechanical frictional movement, and exerting axial pressure then the familiar metals radifferent metals are jointed firmly by sing the heat. Features; 1 the adapted fields are wide and it is adaptable to weld different metals. 2 the welded surface isn't easy to oxidize, the structure of the join is close, so it isn't easy to generate air hole, crevice and other deects. The trength of the joint is the same as that of base material. 3 parameter reaapper is well. Welding quality is stable. It's easy to realize auto. Control of each. Parameters and quality. 4 after welding, the size precision and geometric of workpiece are high. Some parts needn't to be machined again. 5 good labor conditions. No pollution of the Environment, it's convenient to use on the machinery production line. 6 high productivity. For example exhaust valve can be welded 200PCS/hour 7 energy saving. Power consumption and workpiece consumption are low, during welding, other materials needm't to be added.
