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DIE CASTING PROCESS

What is die casting?

Die casting is a metal casting process, which is characterized by applying high pressure to the molten metal using the cavity of the mold. Molds are usually made of higher-strength alloys, and this process is somewhat similar to injection molding. Most die castings are iron-free, such as zinc, copper, aluminum, magnesium, lead, tin, and lead-tin alloys and their alloys. Depending on the type of die casting, you need to use a cold chamber die casting machine or a hot chamber die casting machine.

• Zinc: The metal that is the easiest to die-cast. It is economical to manufacture small parts, is easy to coat, has high compressive strength, high plasticity, and long casting life.

• Aluminum: Light weight, high dimensional stability when manufacturing complex and thin-walled castings, strong corrosion resistance, good mechanical properties, high thermal and electrical conductivity, and high strength at high temperatures.

• Magnesium: It is easy to be machined, has a high strength-to-weight ratio, and is the lightest among commonly used die-cast metals.

• Copper: High hardness, strong corrosion resistance, the best mechanical properties of commonly used die-casting metals, wear resistance, and strength close to steel.

• Lead and Tin: high density, high dimensional accuracy, can be used as special anti-corrosion parts. For public health considerations, this alloy cannot be used as food processing and storage equipment. The alloy of lead, tin and antimony (sometimes containing a bit of copper) can be used to make manual type and bronzing in letterpress printing.

Advantage:

1. Good product quality

The dimensional accuracy of castings is high, generally equivalent to 6~7, even up to 4; the surface finish is good, generally equivalent to 5~8; the strength and hardness are higher, and the strength is generally 25~30% higher than sand casting, but it is extended The rate is reduced by about 70%; the size is stable, and the interchangeability is good; it can die-cast thin-walled complex castings.

2. High production efficiency

3. Excellent economic effect

Due to the precise size of the die-casting, the surface is smooth and clean. Generally, it is used directly without mechanical processing, or the processing volume is small, so it not only improves the metal utilization rate, but also reduces a large number of processing equipment and man-hours; the price of castings is easy; it can be combined die-casting with other metal or non-metal materials . It saves not only assembly man-hours but also metal.

Disadvantages:

The cost of casting equipment and molds is high, so the die-casting process is generally only used to manufacture a large number of products in batches, and small batch production is not cost-effective.

QY Precision has full experience on Die Casting Process, and offers different solutions to meet your need. You can choose the suitable one for your final products and market. Welcome send your 2D/3D drawings for free quotation.