Shell molding refers to the molding method in which resin sand is contacted with metal preheated to 150-350℃ to form a cavity with the outline of the metal mold, with a thickness of 6-12.5mm.
Advantage: high precision casting size and small machining allowance. The surface of the casting is smooth and clean. Pouring thin-walled castings. The casting scrap rate is low. Increased productivity