Which zinc alloy to choose is mainly considered from three aspects
1. The purpose of die casting itself and the performance requirements that need to be met. include:
(1) Mechanical properties, tensile strength, are relatively large resistance when the material breaks;
Elongation is a measure of brittleness and plasticity of materials;
Hardness is the resistance of the surface of a material to plastic deformation caused by hard object intrusion or friction.
(2) Working environment status: working temperature, humidity, medium contacted by the workpiece and air tightness requirements.
(3) Precision requirements: achievable precision and dimensional stability.
2. Good process performance:
(1) Casting process;
(2) Mechanical processing technology;
(3) Surface treatment technology.
3. Good economy: the cost of raw materials and the requirements for production equipment (including melting equipment, die-casting machines, molds, etc.), and production costs.