Sand casting, also known as sand molded casting, is a metal casting process characterized by using sand as the mold material. The term "sand casting" can also refer to an object produced via the sand casting process. Sand castings are produced in specialized factories called foundries. Over 70% of all metal castings are produced via a sand casting process.
Sand casting is relatively cheap and sufficiently refractory even for steel foundry use. In addition to the sand, a suitable bonding agent (usually clay) is mixed or occurs with the sand. The mixture is moistened, typically with water, but sometimes with other substances, to develop strength and plasticity of the clay and to make the aggregate suitable for molding. The sand is typically contained in a system of frames or mold boxes known as a flask. The mold cavities and gate system are created by compacting the sand around models, or patterns, or carved directly into the sand.
Other articles related to "sand casting, casting, castings, sand":
... producing 1 million cars, in the process consuming one-third of the total casting production in the U.S ... automobile industry grew the need for increased casting efficiency grew ... The increasing demand for castings in the growing car and machine building industry during and after World War I and World War II, stimulated new inventions in mechanization and later automation of ...
... Shell molding is similar to sand casting, but the molding cavity is formed by a hardened "shell" of sand instead of a flask filled with sand ... The sand used is finer than sand casting sand and is mixed with a resin so that it can be heated by the pattern and hardened into a shell around the pattern ... Because of the resin and finer sand, it gives a much finer surface finish ...
... Sand casting involves the use of hot molten glass poured directly into a preformed mould ... It is a process similar to casting metal into a mould ... The sand mould is typically prepared by using a mixture of clean sand and a small proportion of the water-absorbing clay bentonite ...
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