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Professional machining - advantages of Die Casting

Die casting is a precision casting method that uses high pressure to force metal into a metal mold with complex shapes. Die casting is a metal casting process characterized by the use of mold cavity to apply high pressure to melted metal. Molds are usually machined from stronger alloys, a process somewhat similar to injection molding. Most die-cast 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, a cold chamber die casting machine or a hot chamber die casting machine is required.

Advantages of die casting:

1. Good product quality

The dimensional accuracy of castings is high, generally equivalent to 6~7 grades, and even up to 4 grades; The surface finish is good, generally equivalent to 5~8 grades; The strength and hardness are higher, and the strength is generally 25~30% higher than that of sand casting, but the elongation is reduced by about 70%; Dimensionally stable and interchangeable; Thin-walled complex castings can be die-cast. For example, the minimum wall thickness of zinc alloy die castings can reach 0.3mm; aluminum alloy castings can reach 0.5mm; the minimum casting aperture is 0.7mm; and the minimum pitch is 0.75mm.

2. High machine productivity.

For example, the domestic JIII.3 horizontal cold-air die-casting machine can die casting 600~700 times in eight hours on average, and the small hot chamber die-casting machine can die-cast 3000~7000 times every eight hours on average; Die-casting type has a long life, a die-casting type, die-casting bell alloy, the life can reach hundreds of thousands of times, or even millions of times; Easy to mechanize and automate.

3. Excellent economic effect

Due to the accurate size of the die-casting parts, the surface is smooth and other advantages. Generally, it is no longer used directly for mechanical processing, or the processing amount is very small, so it not only improves the utilization rate of metal, but also reduces a large number of processing equipment and working hours; Castings are cheap; Combined die casting can be used for other metallic or non-metallic materials. It saves assembly man-hours and metal.

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