Die casting is the metal mold pressure carried out on the die casting machine, and it is the casting process with the highest production efficiency. Die casting machines are divided into hot chamber die casting machines and cold chamber die casting machines. The hot chamber die-casting machine has a high degree of automation, less material consumption, and higher production efficiency than the cold chamber die-casting machine. However, restricted by the heat-resistant ability of the parts, it can only be used in the production of castings with low melting point materials such as zinc alloy and magnesium alloy. Nowadays, aluminum alloy die castings, which are widely used, can only be produced on cold chamber die casting machines because of their high melting point. The main feature of die casting is that liquid metal fills the cavity under high pressure and high speed, and forms and solidifies under high pressure.