Characteristics of zinc alloys

1. The ratio is significant;

2. Good casting performance, can die casting complex shape, thin wall precision parts, casting surface smooth;

3. Surface treatment: electroplating, spraying, painting, electrophoresis, polishing, water transfer, etc.

4. When melting and die casting, it does not absorb iron, does not corrode the mold, does not stick the mold;

5. Good mechanical properties and wear resistance at room temperature;

6. Low melting point, melting at 385℃, easy to die casting.

The microstructure of zinc alloy is mainly composed of zinc rich solid solutions containing Al and Cu and Al rich solid solutions containing Zn, and their solubility decreases with the decrease of temperature. However, due to the extremely fast solidification rate of die casting, the solubility of the solid solution is greatly saturated at room temperature. After a certain period of time, this supersaturation phenomenon will gradually be lifted, and the shape and size of the casting will change slightly.