
Technology
Induction Technology

A crucible holds the charge of material to be melted while the induction coil surrounding the crucible is supplied with alternating current. This induces eddy currents in the charge material based on Faraday’s law of electromagnetic induction. Friction from these currents raises the material's temperature.
With induction, heat is generated directly in the metal which makes induction more efficient than Electric, Gas or Arc based furnaces.
Melting metals with induction heating provides reliable, repeatable, non-contact, safe and energy-efficient heat, eliminating heat losses and workplace dangers experienced with flame.
Internal testing suggests that inductions are able to output around 90% of the input power while Electric furnaces output only about 60% of the input power.
Inverter Technology

At the heart of every induction is an inverter which takes the AC power at 50hz and converts it into high frequency high power pulses which is supplied to induction coil. This is done using IGBT or SCR semiconductor switches. These inverters are the most critical component of the induction. Metro inverters have following advantages
- Indigenously developed highly reliable and efficient IGBTor SCR based inverters
- Fully digital inverter control using Real time DSP microcontrollers designed and developed in-house.
- Each model’s inverter is tuned for high efficiency and fast melting.\\
- Easily repairable and serviceable inverters.