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An Induction furnace is an electrical furnace in which the heat is generated through electro-magnetic induction in an electrically conductive medium (usually a metal). The furnace necessarily comprises of a water-cooled copper coil, which when energized with AC power source, develops electromagnetic field around it. Any metal charge kept inside the coil (usually called Furnace Coil) will be subjected to electromagnetic induction which causes eddy current to be generated in the charge, which in turn, causes huge amount of heat to be generated in the charge depending on its resistivity.
The major advantage of induction furnace is that, it offers a clean, energy-efficient and well-controlled melting process. Moreover, as it does not involve any kind of fuel, the pollution hazards are minimal. Now a days more and more iron foundries are replacing cupola furnace with induction furnace. |