Sand casting is a metal casting process that uses sand as the mold material. The sand is compacted or compressed to create a cavity in the shape of the desired part, into which molten metal is poured. The sand mold is destroyed in the removal process, and there is typically no mold release agent. The accuracy of the casting is limited by the type of sand and the molding process. Sand castings made from coarse green sand impart a rough texture to the surface, while castings made from fine green sand can shine as cast but are limited by the depth to width ratio of pockets in the pattern.

The sand casting process can be used to produce shaped parts of nearly any design, including large parts and those with internal passageways. Sand casting is one of the most versatile and widely used metal casting methods, and nearly any metal alloy can be sand cast. The process is cost-effective and efficient, and it can reduce lead time and costs.

The sand casting process involves several stages, including patternmaking, mold preparation, melting and pouring, cooling, shakeout, and cleaning. The sand mold can be formed using green sand, which is an aggregate of sand, pulverized coal, bentonite clay, and water, or chemically bonded molding systems. The sand that is in contact with the casting is called facing sand, and is designed for the casting on hand. Sand casting can make metal parts for every size, from small to large pieces, and it can form castings with excellent exterior and inner cores.

In conclusion, sand casting is a versatile and widely used metal casting process that uses sand as the mold material. It can produce shaped parts of nearly any design, including large parts and those with internal passageways. The process is cost-effective and efficient, and it can reduce lead time and costs. Sand casting involves several stages, including patternmaking, mold preparation, melting and pouring, cooling, shakeout, and cleaning.