| 摘要 |
<p>PURPOSE:To provide an induction heating device for a metallic strip which can heat uniformly the thin metallic strip at the frequency level for an ordinary thick strip by constituting the device in such a manner that an induction conductive coil is provided on the outside of the surface of a deflector roll in contact with the metallic strip in parallel with the roll shaft and heating the roll. CONSTITUTION:This induction heating device is provided with the inducton conduction coil 4 in proximity to the outside of the surface of the deflector roll 10 in contact with the metallic strip 2 passing on said roll without contact with the roll. The coil 4 is provided in parallel with the shaft 12 of the roll 10 and in proximity to the shaft 12 so as to prevent the negation of the looped and induced current with each other. The coil is so constituted as to be supplied with high-frequency current by a high-frequency oscillator 14. Since the coil 4 is disposed in such a manner that the directions of the currents are made the same commonly on the front and rear side in the stage of heating, the induction heating of the thin strip is made possible at the frequency level for the originary thick strip. The induced current flows in the surface of the roll 10 as well to generate heat and to heat the roll surface of the roll 10. The strip 2 is heated double by the contact heat transmission from such roll surface.</p> |
