The post-treatment of castings is the process of heat treatment, shaping, rust prevention and rough machining of cleaned castings. The post-treatment of castings is the last working procedure in the production of casting equipment. Casting cleaning is the process of taking the casting out of the mold, removing the excess parts outside the valve body, and polishing and dressing the internal and external surfaces of the casting equipment. The main job is to remove iron core and iron core. Cast nonferrous alloy is a kind of nonferrous alloy used for casting. Mainly cast copper alloy, cast aluminum alloy, cast magnesium alloy, etc. Process equipment or consumable parts that simulate the shape of castings to form cavities. In order to ensure the formation of a cavity that meets the requirements, the mold should have sufficient strength and rigidity. Riser is an auxiliary component attached to the top or side of casting equipment to avoid casting defects. In the mold, the cavity of the riser is a container for storing liquid metal. Core box is a process casting equipment that makes core sand into core. It can be made of wood, plastic, metal or other materials.