Precision casting refers to the general term for the process of obtaining precision-sized castings. 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, and lost foam casting.

Precision casting is also called lost wax casting. Its products are precise, complex, and close to the final shape of the part. It can be used directly without or with little processing. It is an advanced process with near net shape.

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

One of the more commonly used is investment casting, also known as lost wax casting: selecting suitable investment materials (such as paraffin) to make the investment; repeating the process of dip refractory coating and refractory sand on the investment, hardening the shell and drying; Dissolve the internal investment mold to obtain the cavity; roast the mold shell to obtain sufficient strength, and burn off the residual investment material; cast the required metal materials; solidify and cool, and remove the sand after shell removal to obtain high Precision finished products. According to product needs or heat treatment and cold processing and surface treatment.