Precision casting refers to the general term for the process of obtaining precise size casting. Compared with the traditional sand casting process, the casting size

obtained by precision casting is more accurate and the surface finish is better. It includes: investment casting, ceramic casting, metal casting, pressure casting, lost

casting.

Precision casting is also called lost wax casting, its products are precise, complex, close to the final shape of the part, can not be processed or rarely processed

directly used, so investment casting is an advanced process of near-net shape formation.

It includes: investment casting, ceramic casting, metal casting, pressure casting, lost casting.

One of the more commonly used is investment casting, also known as lost wax casting: the selection of appropriate investment materials (such as paraffin) to

manufacture investment molds; Repeat the process of dipping refractory paint and spreading refractory sand on the investment mold, hardening the shell and

drying; Then the internal investment mold is dissolved to obtain the cavity; Calcined shell to obtain sufficient strength and burn off residual investment material;

Metal materials required for pouring; Solidification and cooling, sand cleaning after husking, so as to obtain a high precision finished product. According to

product needs or heat treatment and cold processing and surface treatment.

Parts manufactured in industry by this process include dental fixtures, gears, cams, ratches, jewelry, turbine blades, machinery components and other parts of complex geometry.