pressure die casting dies manufacturers

　　Wear resistance of zinc alloy die-casting parts and aluminum alloy die-casting parts

　　1. Hardness - Zinc alloy die-casting parts hardness pk Aluminum alloy die-casting

　　The primary condition for wear resistance is hardness. The stronger the hardness and the lower the density, the higher the wear resistance. Compared to aluminum alloy, zinc alloy has a smaller volume and greater weight, so in terms of hardness, zinc alloy has a higher hardness than aluminum alloy, and its wear resistance is better than aluminum alloy.

　　2. Material melting point - Zinc alloy die-casting parts PK Aluminum alloy die-casting parts

　　Due to the heat generated during the friction process, the wear degree for high melting points will be stronger than that for low melting points. The melting point of zinc alloy material is over 300 degrees, while the melting point of aluminum alloy is over 600 degrees. Therefore, the melting point of aluminum alloy material is higher than that of zinc alloy. In terms of melting point, aluminum alloy has stronger wear resistance.

　　3. Molding Performance - Zinc Alloy Die Casting Parts PK Aluminum Alloy Die Casting Parts

　　Zinc alloy has a low melting point, strong flowability, and higher formability than aluminum alloy. Therefore, the surface fineness of zinc alloy die castings is higher than that of aluminum alloy, resulting in stronger wear resistance than aluminum alloy die castings.

　　4. Surface roughness of zinc alloy die-casting parts PK aluminum alloy die-casting parts

　　Due to the reactivity of zinc, zinc alloy die-casting parts can undergo various surface treatments such as electroplating, baking paint, electrophoresis, oil spraying, sandblasting, powder coating, etc., and have a very delicate appearance with a strong metallic texture. However, aluminum has poor chemical and formability properties, and die-casting parts are prone to porosity and rough surfaces. The appearance quality is very poor during electroplating surface treatment, so it is generally used for baking paint surface treatment. Its fineness and smoothness are not as strong as zinc alloy. Therefore, in terms of surface roughness, aluminum alloy die-casting parts are higher than zinc alloy die-casting parts, and zinc alloy has stronger wear resistance.

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