How to choose suitable die-casting molds according to different die-casting materials?
Publish Time: 2024-08-26
In the die-casting production process, the correct selection of suitable die-casting molds is crucial to ensure product quality and improve production efficiency. Different die-casting materials have different characteristics, so it is necessary to select die-casting molds in a targeted manner.
For aluminum alloy die-casting materials, due to their good fluidity and small shrinkage, die-casting molds made of hot-working die steel can be selected. This material has high thermal strength and hardness, and can withstand the high temperature and high pressure during the aluminum alloy die-casting process. At the same time, the surface treatment of the mold is also critical. Nitriding and other processes can be used to improve the wear resistance and corrosion resistance of the mold to meet the needs of aluminum alloy die-casting.
For zinc alloy die-casting materials, their melting point is low and the thermal shock to the mold is relatively small. You can choose mold steel with moderate hardness and good toughness. The design of zinc alloy die-casting molds should focus on a good exhaust system to prevent defects such as pores in the casting. Moreover, due to the good fluidity of zinc alloy, the runner and cavity design of the mold can be relatively simple.
For magnesium alloy die-casting materials, due to the flammability and activity of magnesium alloy, the requirements for molds are higher. The mold material needs to have good high temperature resistance, oxidation resistance and flame retardancy. At the same time, the cooling system of the mold should be efficient to quickly take away the heat generated during the die-casting process to prevent the magnesium alloy from burning.
In short, when selecting die-casting molds according to different die-casting materials, it is necessary to comprehensively consider factors such as the physical and chemical properties, melting point, fluidity, and shrinkage of the material. At the same time, the most suitable die-casting molds should be selected in combination with the production process requirements and cost, so as to ensure the smooth progress of die-casting production and the stable and reliable product quality.
