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                        What is a precision casting?






Among the precision castings, investment casting is also commonly used. It is also called lost wax casting. It is made by using suitable investment materials (such as paraffin) to make investment molds. Repeated refractory coating and refractory sanding process on the investment mold, hardened shell and drying Then, the internal melting mold is dissolved to obtain a cavity; the calcined shell is obtained to obtain sufficient strength, and the residual investment material is burned off; the metal material required for casting is poured; the solidification is cooled, and the sand is removed after shelling, thereby Get high precision finished products. According to product needs or heat treatment and cold processing and surface.

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