What is induction heating?

Induction heating relies on the principle of electromagnetic induction. This principle states that when a conductive material is placed in a rapidly changing magnetic field a current will flow in the conductive material.

Typically when using an induction heater the material to be heated is placed in a copper coil which has a rapidly changing magnetic field. As this acts like the primary of a transformer, the material then effectively acts as the short circuit secondary winding of the transformer. The current flow thereby created combined with the resistance properties of the material generate a loss which is expressed as heat.

To date induction coils have been used as a method of precisely and accurately heating conductive materials. Induction heating is found in a variety of applications in the automotive, aerospace and engineering sectors.

The graph below illustrates the typical frequency needed for induction heating applications and the frequency range that HephaHeat operates within.