Sand Casting

Sand mold casting is a widely used form of casting. As the name suggests, the mold is made of sand. Sand mold casting requires putting a finished part model or a wooden model (pattern) in the sand, and then filling the pattern with sand. After the pattern is taken out of the box, the sand forms a mold .

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 60% of all metal castings are produced via sand casting process.

Molds made of sand are 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 the 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 called patterns, by carving directly into the sand, or by 3D printing.

Production Process

Molding and Core Making - Melting and Pouring - Knockout and Cleaning - gate cutting - Heat Treatment  - Shot-blasting Treatment - Weld Repairing - Dimension and Appearance Inspection