Grain-oriented electrical steel sheet and manufacturing method therefor
AssigneeNippon Steel Corporation
InventorsMasaru Takahashi, Shuichi Yamazaki
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Abstract
This grain-oriented electrical steel sheet is a grain-oriented electrical steel sheet having a final annealing film mainly composed of forsterite and an insulation coating containing pseudo-tetragonal aluminum borate and silica on its surface, wherein one surface or both surfaces of the steel sheet have linear grooves or dot-row shaped recesses with a depth of 5 to 40 μm.
Claims2
A grain-oriented electrical steel sheet having a final annealing film mainly composed of forsterite and an insulation coating containing pseudo-tetragonal aluminum borate and silica on its surface,
- wherein one surface or both surfaces of the steel sheet have linear grooves or dot-row shaped recesses with a depth of 5 to 40 μm.
A grain-oriented electrical steel sheet having a final annealing film comprising forsterite and an insulation coating containing pseudo-tetragonal aluminum borate and silica on its surface,
- wherein one surface or both surfaces of the steel sheet have linear grooves or dot-row shaped recesses with a depth of 5 to 40 μm.
Dependencies are inferred from the claim text.