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<p><a href="https://www.easiahome.com/shell-mold-casting/">Shell Mold Casting</a><br />Shell Mold Casting is a metal casting process used to manufacture high-precision, high-quality metal castings. This process combines the advantages of sand casting and lost wax casting, and can be used to produce various complex shapes of parts, especially suitable for small batch production.<br />The process of shell casting usually includes the following main steps:<br />1. Mold preparation: First, make a mold or model according to the shape and size of the part to be cast. Molds can be made of metal, wood or other materials. The inner surface of the mold is specially treated to improve the surface quality of the casting.<br />2. Coating: The inner surface of the mold is coated with a layer of refractory paint to form a shell. This coating usually consists of a special type of quartz sand and binder to provide sufficient strength and fire resistance.<br />3. Hardening: The surface of the coating is hardened to ensure that the shell is strong enough. This is usually done by applying heat or using special chemicals on the mold.<br />4. Demoulding: Once the shell has hardened, the mold is opened, creating a cavity with the geometry of the casting.<br />5. Casting: After demoulding, the metal material (usually aluminum alloy, copper alloy or iron alloy) is heated to a liquid state and poured into the shell mold. During the casting process, the shell mold protects the molten metal from gas and impurities.<br />6. Cooling and solidification: The molten metal cools in the shell and gradually solidifies to form the desired casting.<br /> development.<br /><br /></p>