Guss (陽性)

Description: Casting is a Forming process used to produce primary and intermediate products (semi-finished products) that can be further processed through forming. A distinction is made between casting in a permanent mould and expendable mould. Casting materials are usually iron-Carbon compounds (cast iron, Steel), non-ferrous Metals such as copper, lead and nickel, light metals such as Aluminium and magnesium, or alloys. Other materials (e.g. plastic, plaster) can also be cast. Processes include, for example, Ingot casting in permanent moulds and continuous casting. The properties of castings are determined by the melt composition and casting structure in combination with the cooling rate, nucleation and crystal growth. Once the melt has been poured into the mould, solidification can be straight-walled, rough-walled and sponge-like (exogenous solidification) or shell-forming (endogenous). The volume of the casting reduces during this process. Feeders are added to compensate.