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|1. (WO2018159390) GRAIN-ORIENTED ELECTRICAL STEEL SHEET AND PRODUCTION METHOD THEREFOR|
|Applicants:||JFE STEEL CORPORATION
|Title:||GRAIN-ORIENTED ELECTRICAL STEEL SHEET AND PRODUCTION METHOD THEREFOR|
According to the present invention, it is possible to inhibit the deterioration of magnetostrictive characteristics and core loss for discontinuous regions that are inevitably generated when magnetic domain refinement is performed with multiple irradiation devices by: the steel sheet having flux closure domains that extend in orientations within 30° with respect to the direction perpendicular to the rolling direction of the steel sheet while partially having discontinuous regions; making the length α of a flux closure domain overlap section in said discontinuous region on one surface of the steel sheet in the direction perpendicular to the rolling direction be longer than the length β of the overlap section on the other surface of the steel sheet in the direction perpendicular to the rolling direction; said length α satisfying 0.5≤α≤5.0; and said length β satisfying 0.2α≤β≤0.8α.