Necessity of metal surface treatment of auto parts (Part 1)

                   Necessity of metal surface treatment of auto parts (Part 1)

With the rapid development of the automobile industry, people have put forward higher and higher requirements on the ability of the automobile to resist the external environment, the reliability, stability, corrosion resistance of the automobile and the appearance of the automobile. Car damage is mainly accident damage, wear damage, corrosion damage and other three forms, of which corrosion damage is the most serious.

The materials used in automobiles are mainly metal materials, and metal materials generally have corrosion problems. Corrosion not only destroys the appearance of the car, but also directly affects the service life of the car, and brings environmental pollution, accidents and waste of materials and energy.

To this end, every finished car needs to go through the auto parts electroplated metal surface treatment.

In addition to the well-known piston, piston ring, connecting rod and other three moving parts of the automobile engine need to be electroplated, the bearing shell, inlet and exhaust valve, exhaust cylinder, silencer, shock absorber connecting rod and other parts need to be surface treated, even automotive decorative parts also need to be electroplated surface treatment of auto parts to improve the beauty.

Common surface treatment methods for electroplating of auto parts are:

(1) Electroplating of auto parts - electrochemical treatment: electroplating and anodizing

(2) Auto parts electroplating - coating: spraying, electrophoresis

(3) Auto parts plating - chemical treatment: phosphating, passivation, blackening, etc

(4) Auto parts plating - heat treatment: hot dip plating, hot spray, hot stamping, chemical heat treatment, etc

(5) Auto parts plating - vacuum method: evaporation plating, sputtering plating, ion plating, etc