precision casting

Precision casting-castings obtained by precision mold casting.

Commonly used is investment casting, also known as wax casting: select appropriate investment materials (such as paraffin wax) to make investment mold; repeatedly dip refractory coating and fire-resistant sand process on the mold, hardened shell and drying; then melt the internal mold to obtain cavity; roasted shell to obtain sufficient strength and burn out the residual mold material; metal materials needed for pouring; After solidification, cooling and shell removal, sand cleaning is carried out to obtain high precision finished products. According to the needs of the product or heat treatment and cold working and surface treatment.

Investment castings are used in almost all industrial sectors, especially in electronics, petroleum, chemical, energy, transportation, light industry, textiles, pharmaceuticals, medical devices, pumps and valves, except for aviation and weapons departments.