What is fine die-casting you know?
The fine die casting is a kind of fine forging method of casting molten alloy liquid into the pressure chamber, filling the cavity of steel mold with high speed, and making the alloy liquid coagulate under pressure. Fine die-casting has the following advantages:
1. Good quality.
The scale precision of forging is high, usually equivalent to 6~7, or even up to 4. Good surface finish, usually equivalent to 5~8; The strength and hardness are higher, and the strength is usually 25~30% higher than that of sand forging, but the elongation rate decreases by about 70%. The scale is stable, the interchangeability is good; Castable thin - walled casting. For example, the minimum wall thickness of the current zinc alloy die casting is 0.3mm; Aluminum alloy castings can reach 0.5mm; The minimum casting aperture is 0.7mm; The minimum pitch is 0.75mm.
2. High productivity.
Machine production rate is high, such as domestic J Ⅲ type 3 horizontal cold empty die casting machine die casting of 600 ~ 600 times even eight hours, small hot chamber die casting machine and uniform every eight hours is die casting of 3000 ~ 7000 times; Die-casting life is long, a die-casting mould, die-casting bell alloy, can reach hundreds of thousands of times, or even millions of times; Easy to achieve mechanization and automation.
3. Excellent economic results.
Due to the accuracy of the casting parts, the table is bright and clean. Usually no more mechanical processing and direct application, or the processing amount is very small, so both improved the metal utilization rate, and reduced a lot of processing equipment and working hours; Casting quotation is easy; Able to use combination die-casting with other metal or non-metallic materials. Save both the installation time and the metal.
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