Casting into sand molds is a relatively simple and economical process. In many branches of mechanical engineering (automotive, machine tool construction, car construction, etc.), this method is most often used in the mass production of castings.
Technological capabilities:
– Generally, bronze with good fluidity and low shrinkage is used as the casting material.
– The shape of castings can be quite complex, but still constrained by the need to remove the model from the mold.
– Dimensions of the casting are theoretically unlimited. In this way, the largest castings (up to hundreds of tons) are obtained. These are machine beds, turbine bodies, etc.
– The surface roughness of castings exceeds 0.3 mm, the surface often contains scales and non-metallic inclusions. Therefore, the mating surfaces of parts whose workpieces are obtained by this method are always machined by cutting.