Aluminum alloy die-casting is a process of metal smelting processing. It is a casting method that the molten alloy liquid is filled into the cavity of the steel mold at a high speed under the action of high pressure, and the alloy liquid is solidified under pressure to form castings. It is somewhat similar to Dalian die-casting, which is different from other casting methods in its main characteristics of high pressure and high speed.

Good product quality: the castings have high dimensional accuracy, good surface finish, high strength and hardness, 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. The castings with complex aluminum thin-wall can be diecasted, such as the current zinc alloy die-casting with a small wall thickness of 0.3mm, and aluminum alloy die-casting with a thickness of 0.5mm.

High production efficiency: high machine productivity. For example, the domestic J Ⅲ 3 horizontal cold air die casting aluminum machine can die cast aluminum 600~700 times per eight hours on average, and the small hot chamber die casting aluminum machine can die cast aluminum 3000~7000 times per eight hours on average.

Excellent economic effect: due to the precise size of die-casting aluminum parts, the surface is smooth and clean.

Generally, it is not 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 lot of processing equipment and man hours. The castings are cheap, and combined die casting aluminum can be used with other metal or non-metallic materials, saving both assembly man hours and metal.