Die casting uses high pressure to push liquid metal into a precision metal mold cavity at high speed, “almost the same as plastic”. Metal die casting is the metal liquid under pressure under the action of cooling solidification and forming castings. Cold chamber die casting and hot chamber die casting are two basic methods of die casting process. In cold chamber die casting, liquid metal is poured into the pressure chamber by manual or automatic pouring device, and then the injection punch is advanced, and the metal is hydraulically injected into the model chamber. In the hot chamber die casting process, the chamber is perpendicular to the crucible, and the metal liquid flows into the chamber automatically through the feed port on the chamber. The injection punch moves downward to push the metal liquid through the gooseneck into the cavity. After the metal solidifies, the product is formed, the die casting mold is opened, the casting is removed, and a die casting cycle is completed.