Die casting is a metal pressure die casting forging in the captain’s, is now produced the highest efficiency of the forging process. In addition, die casting mechanical machining allowance should also get smaller, generally in 0.5mm or so, can reduce casting weight, reduce cutting amount to reduce costs
, and can avoid penetration surface dense layer, exposing subcutaneous blowhole,cause the scrap. Die casting machine is divided into hot chamber die casting machineand cold chamber die casting machine two.
The extensive use of aluminum alloy die castings, because higher melting point, can only produce in the cold chamber die casting machine. Hot chamber die-casting machine a high degree of automation, less waste of materials, higher productionefficiency than the cold chamber die casting machine, but the part heat-resisting ability restriction, at present can only be used for zinc alloy
Magnesium alloy, such as low melting point of casting production. The main characteristics of liquid metal die casting is in high voltage, high speed filling cavity,and forming, solidification under high pressure.