| 摘要 |
Proposed is a measure allowing for a reduction in noise generated by the iron core of a transformer or the like when grain-oriented electrical steel sheets, having reduced iron loss due to magnetic domain refining treatment, are stacked for use in the iron core. In a grain-oriented electrical steel sheet including linear strain in a rolling direction of the steel sheet periodically, the linear strain extending in a direction that forms an angle of 30° or less with a direction orthogonal to the rolling direction of the steel sheet, iron loss W 17/50 is 0.720 W/kg or less, a magnetic flux density B 8 is 1.930 T or more, and a volume occupied by a closure domain occurring in the strain portion is 1.00 % or more and 3.00 % or less of a total magnetic domain volume in the steel sheet. |
