Precision die casting process and its advantages

Precision die casting is a precision casting method in which molten alloy liquid is poured into a pressure chamber to fill the cavity of a steel mold at high speed, and the alloy liquid is solidified under pressure to form a casting. Precision die casting has the following advantages.
    1. Good product quality
    The castings have high dimensional accuracy, which is generally equivalent to 6 ~ 7, or 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 that of sand casting, but The elongation is reduced by about 70%; the size is stable and the interchangeability is good; it can die-cast thin-walled complex castings. For example, the minimum wall thickness of current 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 production efficiency
     The machine has high productivity. For example, the domestic JⅢ3 horizontal cold air die casting machine can die-cast 600 to 700 times in eight hours on average, and the small hot-chamber die casting machine can die-cast 3,000 to 7000 times every eight hours on average. Die-cast bell alloy has a life span of hundreds of thousands or even millions; easy to realize mechanization and automation.
    3. Excellent economic effect
Due to the precise dimensions of the die-casting parts, the surface is smooth and smooth. Generally no longer use mechanical processing and use directly, 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; combined die casting can be used for other metal or non-metal materials . Save both assembly man-hours and metal.