This process is suitable for zinc coating and zinc alloy passivation layer, used to improve the corrosion resistance and high temperature resistance of the workpiece, has good ductility and adhesion, meets the friction coefficient requirements of fasteners in the automotive industry, and is suitable for barrel plating and rack plating. This process is suitable for zinc coating and zinc alloy passivation layer, used to improve the corrosion resistance and high temperature resistance of the workpiece, has good ductility and adhesion, meets the friction coefficient requirements of the automotive industry, and is suitable for barrel plating and rack plating .