Fast delivery Metal hot forging China tells you that electric heating is to heat metal blanks by converting electrical energy into heat energy. Fast delivery Metal hot forging China tells you that there are induction electric heating, contact electric heating, resistance furnace heating, and salt bath furnace heating, etc.

Fast delivery Metal hot forging China tells you that induction electric heating is an alternating eddy current generated inside the metal blank under the action of the alternating magnetic field generated by the induction of alternating current. The metal blank is heated directly due to eddy currents and magnetization heating (below the magnetic transition point).

Fast delivery Metal hot forging China tells you that when the blank is heated by induction, the current density generated inside is unevenly distributed along the cross-section, the center current density is small, and the surface current density is large. This phenomenon is called the skin effect.

Fast delivery Metal hot forging China tells you that the surface metal is mainly heated by the passage of electric current, and the core metal is heated by the heat conduction from the outer layer to the inside. For large-diameter blanks, in order to increase the heating speed, a lower current frequency should be selected to increase the depth of current penetration; for small-diameter blanks, due to the smaller cross-sectional size, a higher current frequency can be used, which can improve the efficiency of electric current.