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Sand casting

  • Author:Jack Zou
  • Source:www.diecastingpartsupplier.com
  • Release on:2015-01-26
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.