Grain-oriented electrical steel sheet and method of manufacturing same
AssigneeJfe Steel Corporation
InventorsYoshihisa Ichihara, Takeshi Omura, Kunihiro Senda
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Abstract
Provided is a grain-oriented electrical steel sheet having both low iron loss and good magnetostrictive properties, with which a transformer having excellent properties can be manufactured. The grain-oriented electrical steel sheet of the present disclosure has a linear strain region extending linearly in a direction intersecting the rolling direction, where the linear strain region has a region having compressive stress in the rolling direction, and a region adjacent in a rolling direction to the region having compressive stress has a region having tensile stress in the rolling direction.
Claims14
A grain-oriented electrical steel sheet comprising a linear strain region extending linearly in a direction intersecting a rolling direction of the steel sheet, wherein
- the linear strain region has a region having compressive stress in a rolling direction,
- a region adjacent in a rolling direction to the region having compressive stress has a region having tensile stress in a rolling direction,
- the linear strain region includes a region irradiated by an energy beam such that a B/A value, which is a length (B) in a rolling direction of the linear strain region with respect to a closure domain width (A) in a rolling direction, is 1 to 2, and
- a maximum value of the compressive stress is a yield stress of the grain-oriented electrical steel sheet or less.
Dependencies are inferred from the claim text.