Induction Coil

The induction coil is the core electromagnetic component of a non-ferrous metal induction melting furnace. It is a precisely wound, water-cooled copper conductor that, when energized with high-frequency alternating current, creates a rapidly alternating magnetic field. This field penetrates the non-ferrous metal charge (e.g., aluminum, copper, brass) placed within or near the coil, inducing powerful eddy currents within the metal. The electrical resistance of the metal to these currents generates intense, localized heat (Joule heating), efficiently raising the metal's temperature to its melting point. The coil's design directly influences heating efficiency, melt rate, and temperature uniformity.

Operates on the principle of electromagnetic induction. A high-frequency alternating current (from a power supply/inverter) is passed through the water-cooled copper induction coil, creating a corresponding alternating magnetic field. When a non-ferrous metal workpiece is placed within this field, the changing magnetic flux induces circulating eddy currents within the metal. The electrical resistivity of the metal causes these currents to generate heat directly within the material's volume, leading to rapid and efficient heating and eventual melting.