Friction stir welding application

The invention relates to the technical field of friction stir welding, in particular to friction stir welding application. The friction stir welding application comprises the following steps: S1, zincdie casting; S2, trimming; S3, welding; S4, machining; S5, polishing; and S6, electroplating. A splitting method shown in figures has the advantages that a weld joint is short, the welding difficultyis reduced, a new welding method is adopted in research, the welding quality meets the requirement, the appearance after welding is completely integral, the product grade is high, a zinc recast product can be formed through pressure casting, the polishing cost and the machining cost are reduced, an original pressure casting two-piece type product is connected into a whole through welding, and theproduct appearance grade is high. The surface of the weld joint of the machined product is smooth by conducting staged grinding and polishing on the weld joint, the problem that the machined object is uneven is avoided, and th