Investment casting, also known as lost wax casting: select appropriate investment materials (such as paraffin) to make an investment mold; repeat the process of dipping refractory paint and spreading refractory sand on the investment mold, hardening the mold shell and drying; then transfer the internal investment mold Melt it away to obtain the cavity;
The mold shell is baked to obtain sufficient strength, the remaining investment material is burned off, the required metal material is poured, solidified and cooled, and the sand is cleaned after shelling to obtain a high-precision finished product. Heat treatment and cold processing and surface treatment are performed according to product needs.
