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Grain Oriented Electrical Steel Sheet And Method For Forming Insulating Coating Film
Abstract: This grain-oriented electrical steel sheet comprises: a base material steel sheet; a glass coating film that is formed on the surface of the base material steel sheet; and an insulating coating film that is formed on the surface of the glass coating film. The base material steel sheet has a thickness of 0.15 mm to 0.35 mm. The insulating coating film contains a metal phosphate, amorphous silica, and one or more oxo acid compounds selected from among those of tungsten, vanadium, molybdenum and zirconium. Relative to 100 parts by mass of the metal phosphate, the amount of the amorphous silica is 30 parts by mass to 150 parts by mass and the total amount of the oxo acid compounds is 1.0 part by mass to 50 parts by mass. The moisture content of the insulating coating film is 0% by mass to 0.04% by mass.
Notices, Deadlines & Correspondence
Patent Information
Applicants
NIPPON STEEL CORPORATION
Inventors
1. TAKEDA Kazutoshi
2. TAKATANI Shinsuke
3. KOGAKURA Yuuki
4. FUJII Hiroyasu
Specification
Documents
Application Documents
| # | Name | Date |
|---|---|---|
| 1 | 202517091442-TRANSLATIOIN OF PRIOIRTY DOCUMENTS ETC. [24-09-2025(online)].pdf | 2025-09-24 |
| 2 | 202517091442-STATEMENT OF UNDERTAKING (FORM 3) [24-09-2025(online)].pdf | 2025-09-24 |
| 3 | 202517091442-REQUEST FOR EXAMINATION (FORM-18) [24-09-2025(online)].pdf | 2025-09-24 |
| 4 | 202517091442-PROOF OF RIGHT [24-09-2025(online)].pdf | 2025-09-24 |
| 5 | 202517091442-PRIORITY DOCUMENTS [24-09-2025(online)].pdf | 2025-09-24 |
| 6 | 202517091442-POWER OF AUTHORITY [24-09-2025(online)].pdf | 2025-09-24 |
| 7 | 202517091442-FORM 18 [24-09-2025(online)].pdf | 2025-09-24 |
| 8 | 202517091442-FORM 1 [24-09-2025(online)].pdf | 2025-09-24 |
| 9 | 202517091442-DECLARATION OF INVENTORSHIP (FORM 5) [24-09-2025(online)].pdf | 2025-09-24 |
| 10 | 202517091442-COMPLETE SPECIFICATION [24-09-2025(online)].pdf | 2025-09-24 |