Indotherm Furnaces Pvt. Ltd.

www.indotherm.net

indotherm@vsnl.net

Manufacturer of Induction Furnaces

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 furnaces with induction furnaces.

 Induction furnaces are widely used in steel industries, from small foundries using 50 kg.  capacity furnaces or below up to large billet producing steel melting shops using 30 Ton capacity furnaces or even more. 

 Induction furnaces are made over a wide of range of medium frequency, usually from 500 c/s to 10000 c/s.  The amount of heat generated is directly proportional to the frequency, but the depth of penetration of heat is inversely proportional to the frequency.  Hence smaller capacity furnaces generally use higher frequency and bigger capacity lower frequency.  In earlier days Induction Furnaces were made at 50 c/s only (mains frequency furnaces).  But these have been outdated and taken over by medium frequency furnace.