| 摘要 |
A method for manufacturing a directional electromagnetic steel plate, including: a laser processing step for radiating a laser beam on the region at one end side in the width direction of the steel plate after a cold-rolling step, the laser beam being radiated along the direction in which the steel plate is rolled, and forming a laser-processed part; and a finish-annealing step for winding, in a coil shape, the steel plate on which the laser-processed part has been formed, and performing finish-annealing on the coil-shaped steel plate. In the laser processing step, a molten and resolidified portion having a thickness corresponding to more than 0% and 80% or less of the plate thickness of the steel plate is formed, by radiating the laser beam, at the portion corresponding to the laser-processed part. |
