The forming principle of stamping parts: stamping is a forming method that relies on presses and dies to apply external force to plates, strips, pipes and profiles to cause plastic deformation or separation, so as to obtain the required shape and size of the workpiece.
The surface treatment of stamping products includes electroplating, electrostatic spraying, painting, electrophoresis, screen printing and other treatment methods. Wider applications include plastic spraying, painting, blackening, electrophoresis, galvanizing, nickel plating, etc.
The purpose of electroplating metal stamping parts is to plate a metal coating on the substrate to change the surface properties or dimensions of the substrate. Electroplating can enhance the corrosion resistance of metals, increase hardness, prevent abrasion, improve conductivity, lubricity, heat resistance and surface aesthetics.
The paint film of the electrophoretic precision metal stamping has the advantages of fullness, uniformity, flatness and smoothness. The hardness, adhesion, corrosion resistance, impact performance, and permeability of electrophoretic paint film are significantly better than other coating processes.
Treatment of the surface of metal stamping parts with blackening (also called blue): The principle is to rapidly oxidize the surface of steel products to form a dense oxide film protective layer and improve the anti-rust ability of steel parts.
4. Galvanized and tinned
Zinc and tin plating refers to plating a layer of zinc on the surface of metals, alloys or other materials to play a role in aesthetics and rust prevention. Now the main method used for stamping parts is hot-dip galvanizing.
Use pressure or electrostatic force to attach paint or powder to the surface of the workpiece, so that the workpiece has the effect of anti-corrosion and appearance decoration.