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Sand casting is a mold based net shape manufacturing process in which metal parts are molded by pouring molten metal into a cavity. The mold cavity is created by withdrawing a pattern from sand that
Moulding sand: Sand, which binds strongly without losing its permeability to air or gases. It is a mixture of silica sand, clay, and moisture in appropriate proportions. Facing sand: The small amount of carbonaceous material sprinkled on the inner surface of the mould cavity to give a better surface finish to the castings. Important casting terms
Sand Casting /Sand Moulding. 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.
Casting Terminology. Mold cavity- combination of the mold material and cores. Riser-additional void in the mold that provides additional metal to compensate for shrinkage. Gating system- network of channels that delivers the molten metal to the mold.
This Glossary of Metalcasting Terms provides the casting designer and purchaser with practical definitions of common metalcasting phrases and terms. AQL Acceptable Quality Level. A quality level established on a prearranged system of inspection using samples selected at random.
Six Basic Steps of Casting • 4. Solidification process – Controlled solidification allows the product to have desired properties – Mold should be designed so that shrinkage is controlled • 5. Mold removal – The casting is removed from the mold • Single-use molds are broken away from the casting
Sand Casting Terminology. Pattern: A replica of the desired part, used to create the mold. Mold: A cavity created by packing sand around the pattern. Core: An insert placed in the mold to produce internal features of the part.
