casting aluminum alloy, aluminum casting sand casting die can not be separated from the casting mold, mainly divided into metal mold, plastic mold, wood mold, foam mold four categories. Aluminum sand casting usually adopts metal mold for modeling, which can meet the requirements of high surface parts and large volume.

    casting sand can be divided into quartz sand and special sand according to the mineral composition. The main mineral composition of casting sand is quartz, and its main chemical composition is SiO2. 1. natural silica sand: because of its chemical composition and size composition, it is used in molding sand and core sand of non-ferrous alloy castings, iron castings and small and medium-sized steel castings. 2. selected natural silica sand: used for molding sand and core sand with various organic steel as binder. 3. artificial silica sand: sand and core sand used for investment casting, lining or casting steel.