| 摘要 |
PROBLEM TO BE SOLVED: To provide a configuration which makes magnetic resistance between a roller body and an iron core as small as possible and makes the magnetic resistance hard to change.SOLUTION: An iron core for an induction heating roller device includes: a cylindrical iron core part 1 formed by cylindrically accumulating a plurality of long iron core steel plates 2 having curved parts 21, 22 with a curved shape in a width direction cross section; and a ring iron core part 3 which is provided on at least one end part outer peripheral surface in an axial direction of the cylindrical iron core part 1 and is formed by cylindrically accumulating a plurality of short iron core steel plates 4 having a curved part 41 with a curved shape in the width direction cross section. |
