US 12,763,237 B2 · Grain-oriented electrical steel sheet and manufacturing method therefor

Abstract

On a surface of the grain-oriented electrical steel sheet, a rate (a groove existence rate) of a part (a groove formation line) where a groove having a depth of 5 μm to 50 μm and a width of 10 μm to 300 μm exists among a total extension of magnetic domain control treatment lines which forms an angle of 0° to 45° with respect to an orthogonal-to-rolling direction and are arranged in a rolling direction is 50% or more in a first region which is a region where a β angle which is a deviation angle of a grain from a Goss orientation around an axis in the orthogonal-to-rolling direction is 1° or less, and the groove existence rate is less than 50% in a second region where the β angle is more than 2°.

Claims8

Dependent claims

A grain-oriented electrical steel sheet, wherein

on a surface of the grain-oriented electrical steel sheet, a groove existence rate which is a rate of a part where a groove having a depth of 5 μm to 50 μm and a width of 10 μm to 300 μm exists among a total extension of magnetic domain control treatment lines which forms an angle of 0° to 45° with respect to an orthogonal-to-rolling direction and are arranged in a rolling direction is 50% or more in a first region which is a region where a β angle which is a deviation angle of a grain from a Goss orientation around an axis in the orthogonal-to-rolling direction is 1° or less, and
the groove existence rate is less than 50% in a second region where the β angle is more than 2°.

Dependencies are inferred from the claim text.

Grain-oriented electrical steel sheet and manufacturing method therefor

Life of this patent

Grain-oriented electrical steel sheet and manufacturing method therefor

Life of this patent

Abstract

Claims8