“Permanent Mold Casting” Excellent Casting Method for Manufacture of Automotive Components

Abstract

In this paper the study has been done why permanent mold casting method is excellent for manufacture of automotive components. In permanent mold casting process no external pressure is applied but hydrostatic pressure created by the risers is mainly responsible for casting of metal in the mold. As no external pressure is applied hence this process is also called Gravity die casting. In this process, solidification occurs much more rapidly than in sand casting, the main advantage is a permanent mold that can be used repeatedly for multiple metal castings. The mold also called a die is commonly made of steel or iron, but other metals or ceramics can be used. Permanent mold casting is typically used for high-volume production of small, simple metal parts with uniform wall thickness. Non-ferrous metals are typically used in this process, such as aluminum alloys, magnesium alloys, and copper alloys. However, irons and steels can also be cast using graphite molds. Common permanent mold parts include gears and gear housings, pipe fittings, and other automotive and aircraft components such as pistons, impellers, and wheels.