In metalworking, casting means a process, in which liquid metal is poured into a mould, that contains a hollow cavity of the desired shape, and is then allowed to cool and solidify. The solidified part is also known as a casting, which is ejected or broken out of the mould to complete the process. Casting is most often used for making complex shapes that would be difficult or uneconomical to make by other methods



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Casting Processes

Casting processes have been known for thousands of years, and widely used for sculpture, especially in bronze, jeweler in precious metals, and weapons and tools. Traditional techniques include lost-wax casting, plaster mold casting and sand casting. The modern casting process is subdivided into two main categories: expendable and non-expendable casting. It is further broken down by the mould material, such as sand or metal, and pouring method, such as gravity, vacuum, or low pressure.