Casting is the oldest metallurgical technique. The first functional metal components were accidentally refined copper, from chalcopyrite and chalcocite rocks in a fire. The metal could be cast into ingots in the ashes and hammered into a useful shape. Aluminum casting is a critically important group of methods that allow the manufacture of complex parts.
At present, aluminum alloy die-casting products are mainly used in auto parts, electronic shells, communications, motors, aviation, ships, home appliances, furniture accessories, digital shells, handicrafts etc