The materials commonly used in die casting process include aluminum alloy, zinc alloy and magnesium alloy. These materials have their own unique characteristics and application fields in die casting process.
Aluminum alloy
Aluminum alloy is one of the most widely used die casting materials, especially in the fields of automobiles, motorcycles, aerospace, etc. The advantages of aluminum alloy include low density, high specific strength and specific stiffness, excellent electrical and thermal conductivity, strong resistance to oxidation and corrosion, and good die casting performance. However, aluminum alloy may produce large concentrated shrinkage holes during the final solidification, and has a strong affinity with iron and is easy to stick to the mold, so it needs to be operated on a cold chamber die casting machine.
Zinc alloy
Zinc alloy is also a common die casting material with excellent casting properties, mechanical properties and toughness. It is widely used in traditional mechanical parts, hardware, locks, toys and other industries. The advantages of zinc alloy include good electrical and thermal conductivity, vibration damping characteristics and electromagnetic shielding performance. Its versatility, reliability and low cost make it increasingly widely used in electronics, telecommunications and home appliances. Zinc alloy has a low melting point of only 385℃, making it easier to form during the die casting process. However, zinc alloy has relatively poor corrosion resistance and may experience aging changes during use, affecting the stability of its shape and size.
Magnesium alloy
Magnesium alloy is known as the "green engineering material of the 21st century". Its density is 2/3 of aluminum alloy and 1/4 of steel, but its specific strength and specific stiffness are better than aluminum alloy and steel. Magnesium alloy also has excellent energy absorption and vibration absorption characteristics, as well as good electromagnetic shielding performance. Although magnesium alloy has many advantages in the die casting process, its application is also subject to certain restrictions due to its high cost and difficulty in processing.
Characteristics of die casting process
Die casting is a metal casting process that uses the inner cavity of the mold to apply high pressure to the molten metal. This process is particularly suitable for manufacturing a large number of small and medium-sized castings, with the characteristics of smooth surface and high dimensional consistency. The die casting process is usually used to batch manufacture a large number of products and is suitable for production environments that require high precision and high efficiency.
