Sand Casting?

               Sand Casting is simply melting the metal and pouring it into a preformed cavity, called mold, allowing (the metal to solidify and then breaking up the mold to remove casting. In sand casting expandable molds are used. So for each casting operation you have to form a new mold. 

• Most widely used casting process

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• Parts ranging in size from small to very large 

• Production quantities from one to millions

• Sand mold is used.

• Patterns and Cores – Solid, Split, Match-plate and Cope-and-drag Patterns – Cores – achieve the internal surface of the part