Metal castings are idea for complicated and intricate designs that are difficult or unviable by other methods
. The best part is that it does not involve the various time- consuming steps like machining, forging, and welding. Casting is most often used for making complex shapes that would be otherwise difficult or uneconomical to make by other methods Casting ensures better finish to the products than assembled products and is well suited for a range of metals and alloys.
Sand casting is another type of casting process where molds of sand are used to hold the molten metal. It is one of the most popular methods because of the easy availability of raw materials and cost effectiveness. The molten metal is poured into the cavity made in the shape of the casting to be made. When the molten metal solidifies the mold is broken to remove the castings. These days, chemicals and adhesives are being used to bind the aggregate instead of using the wet sand method because of the low cost factor.
Gravity Die casting is a process in which the molten metal is poured into metallic moulds under gravity without any external pressure, which makes it different from High Pressure Die Casting (HPDC), where the molten metal is forced into the metal mould under very high pressures. Gravity die casting is used for producing smooth and sharply defined products. This method is well suited for mass production or reproduction, perfect finish and smooth surface. It is faster than other methods like sand casting and the process can also be automated.
Aluminium Castings are popular and versatile techniques for manufacturing semi- or finished products with complicated shapes in industries like automobile and engineering sectors. Aluminium castings are of two types Ingot casting or Mould casting. In the former process, aluminium is cast into rolling ingot and wire bar ingot to get semi- and finished products; whereas in mould casting molten metal is poured into specific shaped molds to get products.
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