Induction heating principle
The induction heating device is a three-phase power frequency alternating current, which is rectified into a direct current, and then the direct current is converted into an adjustable current, and an alternating current flowing through the capacitor and the induction coil is supplied to generate a high density in the induction coil. The magnetic lines of force and the cutting of the metal material contained in the induction coil create a large eddy current in the metal material.
A metal cylinder is placed in an induction coil with alternating intermediate frequency current. The metal cylinder is not in direct contact with the induction coil. The temperature of the energized coil itself is already low, but the surface of the cylinder is heated to redness or even melt. This rate of redness and melting can be achieved by adjusting the frequency and current. If the cylinder is placed in the center of the coil, the temperature around the cylinder is the same. The cylinder is heated and melted without generating harmful gases or strong light to pollute the environment.