Casting is one of the oldest procedures done on metals. Many products are formed using this method. Here is an attempt to share the knowledge of casting. Casting is one of four types: sand casting, permanent mold casting, plaster casting and Die casting. All these types of castings have their own advantages and disadvantages. Depending on the properties of the product requited, one of the casting is selected. Sand Casting: Sand casting is the oldest casting of the above. This method of casting is in use since 1950.The texture of the product depends on the sand used for casting. The end product is given smooth finishing at the end. Usually iron, steel, bronze, brass, aluminium, magnesium alloys which often include lead, tin, and zinc are used.
Permanent Die Casting Molds: Permanent mold casting uses two pieces of mold. This molds are joined together and molten metal is pored into this mold. The hot metal is allowed to cool and the mold pieces are separated. Some products have metal extrusion which are removed by flash grind or by hand. Tin, lead and Zinc are commonly moulded using this method. Plaster casting: Plaster casting is one of the easiest methods. How ever it is used for metals with low melting point like Cooper, Zinc and Aluminum. This is the easiest process because mold can be made easily in case it brakes in the procedures.
