Electromagnetic heating ring rectifies, filters and inverts 220V AC power supply into 25-30khz high-frequency alternating current through power electronics technology and electromagnetic compatibility technology. It is a heating method that converts high-frequency alternating current into high-frequency alternating magnetic field. When the magnetic field touches the metal barrel, it is converted into high-frequency alternating current, and this current makes the heated equipment heat directly from the inside.
The electromagnetic heating ring fundamentally solves the problem of low efficiency of resistance heating through heat conduction, such as electric heating sheet and electric heating ring. Its heating efficiency is as high as 96%, which reduces the surface temperature of the barrel from hundreds of degrees to tens of degrees. At the same time, it can make full use of the friction heat of the screw to make more full use of energy.
