Sand Casting

Sand casting, the most widely used economical process for creating rough metal parts, utilizes expendable sand molds to form complex metal parts.As the sand mold must be destroyed in order to remove the casting, sand casting typically has a low production rate. The Sand casting post process may require a longer lead time for production at high output rates (1–20 pieces/hour/mold), but is unsurpassed for large-part production. Raw castings are then machined to produce finished products or components.

GOWSAI is engaged in the manufacture of Sand Castings through CO2 and green sand processes.our range of sand castings are from 1 kg to 30 kgs.

Green Sand mould process

These expendable molds are made of wet sands that are used to make the mold's shape. The name comes from the fact that wet sands are used in the molding process. Green sand is not green in color, but "green" in the sense that it is used in a wet state Unlike the name suggests, "green sand" is not a type of sand on its own,There are many recipes for the proportion of clay, but they all strike different balances between moldability, surface finish, and ability of the hot molten metal to degas.

Co2 mould process

Co2 Casting is a kind of sand casting process employing a moulding mixture of sand and a liquid silicate binder. The moulding mixture is hardened by blowing carbon dioxide gas through it.Co2 moulding process has many advantages over other forms of sand moulding. But it is not more economical to do than green sand moulding, but high accuracy and good surface finish on castings are possible. the likelihood of rejections is less. Whilst productivity is higher. Mould cracking and deformation are also prevented. much closer tolerances, which can reduce machining time of castings