Induction Coils

How does an induction coil work?

An induction coil works based on the principle of electromagnetic induction, which is the process of generating electric current using a changing magnetic field.

1. Alternating current flows through the induction coil (most commonly made of copper). This creates a rapidly alternating magnetic field around the coil.
2. When a metal object (such as steel, aluminum, or copper) is placed inside this magnetic field, it experiences a changing magnetic flux. According to Faraday's Law, this change induces eddy currents in the metal.
3. These eddy currents flow within the resistive metal and generate heat due to the metal's electrical resistance. In ferrous metals, additional heat comes from hysteresis loss. This is the resistance of the metal's magnetic domains to changes in the magnetic field.
4. Heating is very localized to the area near the coil. It can be very fast, clean, and precisely controlled, which is used for many applications.

Additionally, induction coil geometry plays a critical role in determining the efficiency, heating pattern, and effectiveness of the indction heating process.The shape and design of the coil are customized based on the part's size, shape, and heating requirements.

Call 973-340-9212 or E-mail sales@mendtechinc.com to learn more. . .