An induction furnace is an electrical furnace in which the heat is applied by induction heating of a conductive medium (usually a metal) in a crucible placed in a water-cooled alternating current solenoid coil. The advantage of the induction furnace is a clean, energy-efficient and well-controllable melting process compared to most other means of metal melting. Most modern foundries use this type of furnace and now also more iron foundries are replacing cupolas with induction furnaces to melt cast iron, as the former emit lots of dust and other pollutants. Induction furnace capacities range from less than one kilogram to one hundred tonnes capacity, and are used to melt iron and steel, copper, aluminium, and precious metals.

Operating frequencies range from utility frequency (50 or 60 Hz) to 400 kHz or higher, usually depending on the material being melted, the capacity(volume) of the furnace and the melting speed required. Generally the smaller the volume of the melts the higher the frequency of the furnace used; this is due to the skin depth which is a measure of the distance an alternating current can penetrate beneath the surface of a conductor. For the same conductivity the higher frequencies have a shallow skin depth - that is less penetration into the melt. Lower frequencies can generate stirring or turbulence in the metal.

A preheated 1-tonne furnace melting iron can melt cold charge to tapping readiness within an hour. Power supplies range from 10kw to 15000 kw, with melt sizes of 20 kg to 30000 kg of metal respectively.

We have two Induction furnace at BRGD factory, details are following:

1) Model: Powertrack 2750 SR

2) Sl.No.FFPT1657PTO7096B1932 and FFPT1657PTO7048B1884

3) Supply: 575 VOLT

4) Phase : 3 (Three) 50 hz

5) Input Current : 3030 A

6) Output KW: 2750

7) Frequency : 500 hz

8) Capacity: 7 MT