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Thermech Sales & Services Private Limited

Kolkata, West Bengal

| GST  19AADCT7671E1Z2

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Overview

What is Induction Heating?


Induction heating is the process of heating conductors, (usually metals), by inducing an electric current to flow in the object to be heated. Current is induced into the object in the same manner that current is induced into the secondary of a transformer.

An alternating current is applied to the primary of a transformer, which creates an alternating magnetic field. The secondary of the transformer is located within the magnetic field. Faraday's Law shows that an electric current will be induced into the secondary of the transformer. In induction heating, a coil of copper is wound around an object to be heated. The coil of copper can be compared to the transformer primary and the object to be heated can be compared to the secondary of the transformer.

The object to be heated acts like a single turn secondary in a transformer. Additionally, the object acts as if the single turn secondary were short circuited. Thus, applying an alternating current to the induction coil induces a current into the object to be heated. Imagine how a short circuit secondary on a transformer would heat up if you connected power to the primary.
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