Casting process
Release Time::2014-09-03
According to the mold casting material casting for sand casting and metaltype. Sand casting is a sand as the main material, make the traditional mould casting process. General use of the gravity casting sand, there are special requirements can be used when the low pressure casting,centrifugal casting process. The metal mold casting is the modernproduction process of casting mold with heat-resistant alloy steel. Metaltype can use gravity casting, also can use the pressure casting. Metalpressure casting in casting machine is currently the highest production efficiency of casting process. Casting mold metal mold can be used repeatedly, each cast once a casting, die life is very long, the production efficiency is very high. Metal castings not only good dimension precision,surface finish, and pouring liquid metal in the same condition, the castingintensity higher than sand. Therefore, in the mass production of smallcastings, non-ferrous metal casting, as long as the melting point of material is not too high, generally preferred metal mould casting.However, the metal mold casting also has some shortcomings: because the price is high heat resistant alloy steel material, and processing the hollow wheel are relatively expensive, so the metal mold is not cheap.For single or small batch production, is allocated to each product on themould cost is high, the general is not easy to accept. Because the die metal processing equipment, mold material by size and cavity castingequipment capacity constraints, so it is incapable of action for largecastings. Therefore in small batch and big production, rarely using the metal mold casting. In addition, the metal mould while using heat-resistant alloy steel, but the heat capacity is still limited, generally used for casting aluminum alloy, zinc alloy, magnesium alloy, has been seldom used in copper alloy casting, and even fewer for ferrous metal casting.