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Casting in sand molds

  • Author:Anna
  • Source:www.diecastingpartsupplier.com
  • Release on:2014-10-31

Casting in sand molds - cheap, very rough, but the most popular for certain materials (steel and cast iron by up to 75-80% by weight of the castings produced in the world) type casting. Initially produced foundry models (previously - Aluminum housing Are now commonly used plastic models, obtained by the methods of rapid prototyping), copies the item's future. The model is filled with sand or molding sand (usually sand and binder) that fills the space between it and the two open boxes (flasks). Holes in parts formed using placed in the form of casting sand cores that replicate the shape of future openings. Pour into the flask the mixture is compacted by shaking, pressing or hardens in an oven. A cavity filled with molten metal through the holes - the sprues. After cooling, divide and form the casting is removed. After that separate gating system .

high quality cast aluminum pans stamp (Typically the stump) is removed burrs and heat-treated.

 

The new direction of technology sand casting is the use of a suction forms of dry sand without binder. For this method, the casting may be used various molding materials such as sand and clay or sand mixture was mixed with a resin and the like. D. To form the shape of the flask is used (metal box without bottom and lid). Flask has two mold halves, i.e. consists of two boxes. The plane of contact of the two mold halves - the surface of the connector. In the half-mold is filled moldable mixture and tamped it. On the surface of the connector make imprint pro model (pro model conforms to the shape of the casting) 

aluminum die casting. Also performs the second mold half. Connects the two mold halves on the connector surface and produce a metal casting.