Metal castings are produced in a foundry. Metals are melted into a liquid to cast them into different shapes and sizes. It is then poured into a mould and is removed from it once it starts to cool and solidify. The most common metals that are processed are aluminium and cast iron.
The process of casting is centuries old. Approximately 90% of manufacturing goods depend on this for its components and parts. Car and trucks are the largest markets for iron castings. Some non-ferrous metals are also used either for casting or as alloys added to steel.
History of Indian Foundries
Indians have known the art of metal casting since 3000 B.C. World attention has been drawn towards the famous iron pillar that is 7 meters tall and weighs up to 7 tons for its excellent state of preservation for about 25 centuries, situated at Mehrauli, near Delhi. This is one testimony of India’s skilled metal craftsmanship.
The modern foundry industry had its origin in Kolkata during the British rule to meet the needs of Indian Railway, textile, and allied industries.