压铸是一种先进的铸造方法,是液态金属在高速高压作用下射入紧锁的模具型腔内并保压,结晶直至凝固的过程。这是一次就能把原材料变为半成品或成品的生产方法。它所获得的铸件表面粗糙度通常可达Ra1.6～25,尺寸精度高(可达2～5级),机械性能好,生产效率高,是一种少 Die-casting is an advanced casting method, which is the liquid metal injection into the locked mold cavity under the effect of high-speed and high-pressure, keeping pressure and crystallizing until the solidification process. This is the first time that raw materials can be converted into semi-finished or finished products. It obtained the casting surface roughness is usually up to Ra1.6 ~ 25, high dimensional accuracy (up to 2 to 5), good mechanical properties, high production efficiency, is a less