Grain-oriented electrical steel sheet, and steel sheet serving as base sheet for grain-oriented electrical steel sheet
AssigneeNippon Steel Corporation
InventorsShuichi Nakamura, Yoshiyuki Ushigami, Hiroyasu Fujii
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Abstract
A grain-oriented electrical steel sheet according to an aspect of the present invention includes an underlying steel sheet and a tension-insulation coating arranged on the surface of the underlying steel sheet, and a ten-point average roughness RzL in an L direction obtained when the tension-insulation coating is removed from the grain-oriented electrical steel sheet with an alkaline solution, and then the surface of the underlying steel sheet is measured in a rolling direction is 6.0 μm or less.
Claims15
A grain-oriented electrical steel sheet comprising an underlying steel sheet and a tension-insulation coating arranged on a surface of the underlying steel sheet,
- wherein the underlying steel sheet obtained by removing the tension-insulation coating from the grain-oriented electrical steel sheet with an alkaline solution has a ten-point average roughness RzL in a rolling direction of 6.0 μm or less and an arithmetic average roughness RaC in the direction perpendicular to the rolling direction is less than 0.6 μm.
Dependencies are inferred from the claim text.