① Mold (a container for making liquid metals into solid castings) mold according to the materials can be divided into sand, metal, ceramic, clay, graphite, etc., according to the number of times can be divided into one-off, semi-permanent and permanent type, mold preparation is the main factor affecting the quality of castings;
② casting metal melting and pouring, casting metal (casting alloy) mainly various types of cast iron, cast steel and cast non-ferrous metals and alloys;
③ Casting processing and inspection, casting treatment includes the removal of core and casting surface foreign bodies, the removal of sprue, shovel grinding burr and the drape and so on, heat treatment, plastic, rust treatment and roughing and so on.
Casting process can be divided into three basic parts, namely casting metal preparation, mold preparation and casting treatment. Casting metal refers to the metal material used for casting castings in foundry production, it is an alloy composed of a metal element and other metals or non-metallic elements, and is used to be called casting alloy, mainly cast iron, cast steel and cast nonferrous alloy.