1. Good product quality: the castings have high dimensional accuracy, 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 increased by 25 compared with sand casting ~ 30%, but the elongation is reduced by about 70%; the size is stable and the interchangeability is good; aluminum thin-wall complex castings can be die-cast. For example, the minimum wall thickness of current zinc alloy die-cast aluminum parts can reach 0.3mm; aluminum alloy castings can reach 0.5mm; the minimum cast hole diameter is 0.7mm; the minimum screw pitch is 0.75mm.
2. High production efficiency: high machine productivity, for example, domestic JⅢ3 horizontal cold-air die-casting aluminum machine can die-cast aluminum 600-700 times on average in eight hours, and small hot-chamber die-casting aluminum machine can die-cast aluminum on average 3000-7000 times every eight hours; The die-casting aluminum mold has a long service life. Once die-casting aluminum mold and die-casting aluminum bell alloy, the service life can reach hundreds of thousands of times or even millions of times; it is easy to realize mechanization and automation.
3. Excellent economic effect: Due to the precise size of die-cast aluminum parts, the surface is bright and clean. Generally, it is no longer mechanically processed and used directly, or the processing amount is very small, so it not only improves the metal utilization rate, but also reduces a large number of processing equipment and man-hours; the castings are cheap; you can use combination die-casting aluminum to other metal or non-metal materials . It saves both assembly time and metal