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Grain Oriented Electrical Steel Sheet, And Manufacturing Method Therefor
Abstract: A method for manufacturing a grain-oriented electrical steel sheet, according to one embodiment of the present invention, comprises the steps of: manufacturing a hot rolled sheet by hot rolling a slab comprising, by wt%, 2.5-4.0% of Si, 0.03-0.09% of C, 0.015-0.040% of Al, 0.04-0.15% of Mn, 0.01% or less of S (excluding 0%) and 0.002-0.012% of N, and comprising the balance of Fe and other inevitable impurities; cold rolling the hot rolled sheet to manufacture a cold rolled sheet; performing primary recrystallization annealing on the cold rolled sheet; and performing secondary recrystallization annealing on the cold rolled sheet for which the primary recrystallization annealing has been completed.
Notices, Deadlines & Correspondence
Patent Information
Applicants
POSCO CO., LTD
Inventors
1. KWON, Minserk
2. MIN, Seonghoon
3. CHOI, Heonjo
Specification
Documents
Application Documents
| # | Name | Date |
|---|---|---|
| 1 | 202337047740-TRANSLATIOIN OF PRIOIRTY DOCUMENTS ETC. [15-07-2023(online)].pdf | 2023-07-15 |
| 2 | 202337047740-STATEMENT OF UNDERTAKING (FORM 3) [15-07-2023(online)].pdf | 2023-07-15 |
| 3 | 202337047740-REQUEST FOR EXAMINATION (FORM-18) [15-07-2023(online)].pdf | 2023-07-15 |
| 4 | 202337047740-PRIORITY DOCUMENTS [15-07-2023(online)].pdf | 2023-07-15 |
| 5 | 202337047740-POWER OF AUTHORITY [15-07-2023(online)].pdf | 2023-07-15 |
| 6 | 202337047740-NOTIFICATION OF INT. APPLN. NO. & FILING DATE (PCT-RO-105-PCT Pamphlet) [15-07-2023(online)].pdf | 2023-07-15 |
| 7 | 202337047740-FORM 18 [15-07-2023(online)].pdf | 2023-07-15 |
| 8 | 202337047740-FORM 1 [15-07-2023(online)].pdf | 2023-07-15 |
| 9 | 202337047740-DRAWINGS [15-07-2023(online)].pdf | 2023-07-15 |
| 10 | 202337047740-DECLARATION OF INVENTORSHIP (FORM 5) [15-07-2023(online)].pdf | 2023-07-15 |
| 11 | 202337047740-COMPLETE SPECIFICATION [15-07-2023(online)].pdf | 2023-07-15 |
| 12 | 202337047740-Proof of Right [10-08-2023(online)].pdf | 2023-08-10 |
| 13 | 202337047740-FORM 3 [09-11-2023(online)].pdf | 2023-11-09 |
| 14 | 202337047740-FER.pdf | 2024-06-28 |
| 15 | 202337047740-FORM 3 [01-08-2024(online)].pdf | 2024-08-01 |
| 16 | 202337047740-FER_SER_REPLY [27-12-2024(online)].pdf | 2024-12-27 |
| 17 | 202337047740-DRAWING [27-12-2024(online)].pdf | 2024-12-27 |
| 18 | 202337047740-CLAIMS [27-12-2024(online)].pdf | 2024-12-27 |
| 19 | 202337047740-PatentCertificate07-10-2025.pdf | 2025-10-07 |
| 20 | 202337047740-IntimationOfGrant07-10-2025.pdf | 2025-10-07 |
Search Strategy
| 1 | SearchStrategy36J202337047740E_27-06-2024.pdf |