Surface treatment is the surface of the substrate material to form a layer with the matrix of the mechanical, physical and chemical properties of the surface layer of the process. The purpose of surface treatment is to meet the product corrosion resistance, wear resistance, decoration or other special functional requirements. Formetal machining parts, more commonly used surface treatment methods are mechanical grinding, chemical treatment, surface heat treatment, spray surface, surface treatment is the surface of the workpiece cleaning, cleaning, deburring, to oil, descaling and so on.
