| 摘要 |
PROBLEM TO BE SOLVED: To provide a method of obtaining a laminated iron core having superior magnetic properties, without using a heating oven and a laminated iron core. SOLUTION: A laminated iron core is manufactured through a method, which comprises a first step of forming an insulating film that displays an adhesive power, while heat and pressure are applied on an electromagnetic steel plate; a second step of punching unit iron cores out of the electromagnetic steel plate; and a third step of laminating a prescribed number of the unit iron cores and forming them in one piece through application of heat and pressure; the laminated iron core is disposed between two or more electrodes of a high-frequency dielectric heating device; an insulating layer is interposed between the electrode and the laminated iron core; the laminated iron core is pressed; and the insulating films of the unit iron cores are subjected to partial dielectric-heating by the high-frequency dielectric heating device, to form the unit iron cores in a single piece.
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