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Grain Oriented Electrical Steel Sheet And Insulating Coating Forming Method
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 alkaline earth metal elements excluding magnesium. Relative to 100 parts by mass of the metal phosphate, the amount of the amorphous silica is 50 parts by mass to 150 parts by mass and the total amount of the alkaline earth metal elements is 1.0 part by mass to 20 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 | 202517089015-TRANSLATIOIN OF PRIOIRTY DOCUMENTS ETC. [18-09-2025(online)].pdf | 2025-09-18 |
| 2 | 202517089015-STATEMENT OF UNDERTAKING (FORM 3) [18-09-2025(online)].pdf | 2025-09-18 |
| 3 | 202517089015-REQUEST FOR EXAMINATION (FORM-18) [18-09-2025(online)].pdf | 2025-09-18 |
| 4 | 202517089015-PROOF OF RIGHT [18-09-2025(online)].pdf | 2025-09-18 |
| 5 | 202517089015-PRIORITY DOCUMENTS [18-09-2025(online)].pdf | 2025-09-18 |
| 6 | 202517089015-POWER OF AUTHORITY [18-09-2025(online)].pdf | 2025-09-18 |
| 7 | 202517089015-FORM 18 [18-09-2025(online)].pdf | 2025-09-18 |
| 8 | 202517089015-FORM 1 [18-09-2025(online)].pdf | 2025-09-18 |
| 9 | 202517089015-DECLARATION OF INVENTORSHIP (FORM 5) [18-09-2025(online)].pdf | 2025-09-18 |
| 10 | 202517089015-COMPLETE SPECIFICATION [18-09-2025(online)].pdf | 2025-09-18 |