Casting process usually includes: (1) casting processing and inspection, foreign body casting processing including removal of core and the casting surface, remove poured riser, shovel grinding burrs and cover with seam protruding content and heat treatment, plastic, rust and rough machining, etc.;(2) cast (containers) makes liquid metal solid casting, casting according to the materials can be divided into sand mold, metal, ceramic, mud, graphite, etc., can be divided by use disposable, semi permanent and permanent type, mold preparation quality are the main factors influencing the casting quality;(3) cast metal melting and pouring, casting metal (alloy) mainly casting, cast iron and cast steel, non-ferrous alloy.� � such as metal mold casting, pressure casting, continuous casting, low pressure casting, centrifugal casting, etc.).(2) ordinary sand mold casting, including wet sand, dry sand mold and chemical hardening sand mold 3 classes.