Grain-oriented electrical steel sheet
AssigneeNippon Steel Corporation
InventorsShinsuke Takatani, Shunsuke Okumura, Shohji Nagano, Takashi Kataoka
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Abstract
A grain-oriented electrical steel sheet includes: a steel sheet; an oxide layer including SiO2 that is formed on the steel sheet; and a tension-insulation coating that is formed on the oxide layer, in which the steel sheet includes, as a chemical composition, by mass %, C: 0.085% or less, Si: 0.80% to 7.00%, Mn: 1.00% or less, acid-soluble Al: 0.065% or less, S: 0.013% or less, Cu: 0% to 0.80%, N: 0% to 0.012%, P: 0% to 0.50%, Ni: 0% to 1.00%, Sn: 0% to 0.30%, Sb: 0% to 0.30%, and a remainder of Fe and impurities, the tension-insulation coating includes a chromium compound, and the Fe content in the oxide layer and the tension-insulation coating is 70 mg/m2 to 250 mg/m2.
Claims2
A grain-oriented electrical steel sheet comprising:
- a steel sheet;
- an oxide layer including SiO2 that is formed on the steel sheet;
- and
- a tension-insulation coating that is formed on the oxide layer,
- wherein the steel sheet includes, as a chemical composition, by mass %,
- C:
- 0.085% or less,
- Si:
- 0.80% to 7.00%,
- Mn:
- 1.00% or less,
- acid-soluble Al:
- 0.065% or less,
- S:
- 0.013% or less,
- Cu:
- 0% to 0.80%,
- N:
- 0% to 0.012%,
- P:
- 0% to 0.50%,
- Ni:
- 0% to 1.00%,
- Sn:
- 0% to 0.30%,
- Sb:
- 0% to 0.30%, and
- a remainder of Fe and impurities,
- the tension-insulation coating includes a chromium compound, and
- a Fe content in the oxide layer and the tension-insulation coating is 70 mg/m2 to 250 mg/m2.
Dependencies are inferred from the claim text.