Metal plastic spraying manufacturers

Sandblasting, the main role is surface cleaning, before painting (painting or plastic spraying) sandblasting can increase the surface roughness, to improve the adhesion has a certain contribution, but the contribution is limited, as before chemical coating treatment. Conductive oxidation (chromate conversion film) - used for both protective and conductive applications. Spraying: used for external protection and decoration of equipment, usually on the basis of oxidation.

Before painting aluminum parts should be pre-treatment to make coating and workpiece bonding firmly, generally there are three methods: phosphating (phosphate method), chromium (no chromium), chemical oxidation. Passivation is a method to slow the rate of corrosion of a metal by converting the surface to a state that is not easily oxidized.

Dalian metal plastic spraying factory, metal corrosion products generated as a result of the action of medium if has compact structure, forming a layer of thin film (often invisible), tightly covered on the surface of metal, is to change the surface state of metal, the metal electrode potential jump towards is greatly, and become a corrosion resistant passivity. Electrochemical oxidation, chemical oxidation treatment of aluminum and aluminum alloy equipment is simple, easy to operate, high production efficiency, no consumption of electricity, wide range of application, not limited by the size and shape of parts.