Squeeze casting is a casting process that uses low filling speed and minimum disturbance to solidify liquid metal under high pressure to obtain high density castings that can be heat treated. The most prominent characteristic of squeeze casting is that the filling pressure is high, and the specific gravity of metal mold casting is several orders of magnitude higher than that of metal mold casting. Changing the composition and quantity of phases in the solidified alloy; Increase the heat conduction coefficient between the alloy and the mold; It can reduce the porosity and porosity in the castings and improve the density of the castings.

According to the different methods of extrusion, squeeze casting can be divided into forward squeeze casting and reverse squeeze casting two kinds, at home and abroad has been casting of magnesium alloy extrusion has carried on the preliminary research, and it is concluded that the squeeze casting of magnesium alloy casting of some process parameters, such as squeeze casting of magnesium alloy is mould temperature control in 200-300 ℃, The mold filling pressure is 50-150mpa, the mold coating is gypsum base, and the process temperature of casting is 30-140℃.