| 摘要 |
PROBLEM TO BE SOLVED: To provide an induction heating apparatus capable of induction-heating a metal plate, having a width of wide range, uniformly and efficiently across the full width thereof, and to provide a metal plate joining device using the same.SOLUTION: An induction heating apparatus 10 includes a plurality of pairs of coils facing in the coil axis direction across the conveyance path of a metal plate, and a pair of cores having a plurality of pairs of core main parts around which the plurality of pairs of coils are wound. The plurality of pairs of coils generate an alternating magnetic field penetrating the metal plate in the thickness direction thereof. The plurality of pairs of core main parts adjoin in the plate width direction of the metal plate. The pair of cores increases or decreases the coil interval in the plate width direction of the plurality of pairs of coils, corresponding to the plate width of the metal plate, while maintaining continuity of the plurality of pairs of core main parts via a core material stretching in the plate width direction. |
