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Grain Oriented Electrical Steel Sheet And Method For Manufacturing Same
Abstract: A grain oriented electrical steel sheet according to an embodiment of the present invention comprises: an electrical steel sheet base comprising 2.0 to 7.0 weight % of Si and 0.01 to 0.07 weight % of Sb, and the remainder being Fe and other unavoidable impurities; a fine-grained interfacial layer positioned in a direction toward the inside of the electrical steel sheet base from the surface of the electrical steel sheet base; a base coating layer positioned on the fine-grained interfacial layer; and an insulating coating layer positioned on the base coating layer. The grain oriented electrical steel sheet according to one embodiment of the present invention satisfies formula [1] below. Formula [1] ([P]x[PS]+[F]x[FS]+[C]x[CS])/-([S]/2) =13.0MPa (wherein [P] is thickness (?) of the insulating coating layer, [PS] is residual stress (MPa) of the insulating coating layer, [F] is thickness (?) of the base coating layer, [FS] is residual stress (MPa) of the base coating layer, [C] is thickness (?) of the fine-grained interfacial layer, [CS] is residual stress (MPa) of the fine-grained interfacial layer, and [S] is thickness (?) of the electrical steel sheet base)
Notices, Deadlines & Correspondence
Patent Information
Applicants
POSCO CO., LTD
Inventors
1. KWON, Minserk
2. CHUNG, Woncheol
3. SHIM, Hokyung
4. PARK, Changsoo
5. MIN, Seonghoon
Specification
Documents
Application Documents
| # | Name | Date |
|---|---|---|
| 1 | 202337047963-TRANSLATIOIN OF PRIOIRTY DOCUMENTS ETC. [17-07-2023(online)].pdf | 2023-07-17 |
| 2 | 202337047963-STATEMENT OF UNDERTAKING (FORM 3) [17-07-2023(online)].pdf | 2023-07-17 |
| 3 | 202337047963-REQUEST FOR EXAMINATION (FORM-18) [17-07-2023(online)].pdf | 2023-07-17 |
| 4 | 202337047963-PRIORITY DOCUMENTS [17-07-2023(online)].pdf | 2023-07-17 |
| 5 | 202337047963-POWER OF AUTHORITY [17-07-2023(online)].pdf | 2023-07-17 |
| 6 | 202337047963-NOTIFICATION OF INT. APPLN. NO. & FILING DATE (PCT-RO-105-PCT Pamphlet) [17-07-2023(online)].pdf | 2023-07-17 |
| 7 | 202337047963-FORM 18 [17-07-2023(online)].pdf | 2023-07-17 |
| 8 | 202337047963-FORM 1 [17-07-2023(online)].pdf | 2023-07-17 |
| 9 | 202337047963-DRAWINGS [17-07-2023(online)].pdf | 2023-07-17 |
| 10 | 202337047963-DECLARATION OF INVENTORSHIP (FORM 5) [17-07-2023(online)].pdf | 2023-07-17 |
| 11 | 202337047963-COMPLETE SPECIFICATION [17-07-2023(online)].pdf | 2023-07-17 |
| 12 | 202337047963-Proof of Right [03-08-2023(online)].pdf | 2023-08-03 |
| 13 | 202337047963-FORM 3 [29-12-2023(online)].pdf | 2023-12-29 |
| 14 | 202337047963-FER.pdf | 2024-08-09 |
| 15 | 202337047963-FORM 3 [12-09-2024(online)].pdf | 2024-09-12 |
| 16 | 202337047963-FER_SER_REPLY [04-02-2025(online)].pdf | 2025-02-04 |
| 17 | 202337047963-CLAIMS [04-02-2025(online)].pdf | 2025-02-04 |
| 18 | 202337047963-US(14)-HearingNotice-(HearingDate-07-03-2025).pdf | 2025-02-13 |
| 19 | 202337047963-Response to office action [03-03-2025(online)].pdf | 2025-03-03 |
| 20 | 202337047963-Correspondence to notify the Controller [04-03-2025(online)].pdf | 2025-03-04 |
| 21 | 202337047963-Written submissions and relevant documents [21-03-2025(online)].pdf | 2025-03-21 |
| 22 | 202337047963-PatentCertificate04-04-2025.pdf | 2025-04-04 |
| 23 | 202337047963-IntimationOfGrant04-04-2025.pdf | 2025-04-04 |
Search Strategy
| 1 | SearchStrategy44J202337047963E_16-07-2024.pdf |