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 processing or with little processing. It is an advanced process with near-net shape.
It includes: investment casting, ceramic casting, metal casting, pressure casting, lost foam casting.
Among them, investment casting is more commonly used, also known as lost wax casting: choose suitable investment materials (such as paraffin) to make investment; repeat the process of dipping refractory paint and spreading refractory sand on the investment, hardening the shell and drying; Melt the internal investment mold to obtain the cavity; bake the shell to obtain sufficient strength and burn off the residual investment material; pour the required metal material; solidify and cool, and remove the sand after shelling, so as to obtain high Precision finished product. Heat or cold work and surface treatment as required by the product.
