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Grain Oriented Electrical Steel Sheet And Method For Magnetic Domain Refinement Thereof
Abstract: A grain-oriented electrical steel sheet according to one embodiment of the present invention comprises a plurality of line-shaped deformation parts formed in the rolling direction, and at least two regions, in which intervals between the deformation parts are changed in response to a sensitivity index (Ks) calculated through the following formula 1 over the full length of the steel sheet and differ from each other, are present. [Formula 1] Ks=(0.7×Ds+0.3×B8)/10 (wherein Ks denotes a sensitivity index, Ds is the particle diameter (mm) of crystal grain, and B8 denotes magnetic flux density (T) measured in a magnetic field strength of 800A/m.)
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Notices, Deadlines & Correspondence
Notices, Deadlines & Correspondence
Patent Information
Application #
Filing Date
28 November 2023
Publication Number
50/2023
Publication Type
INA
Invention Field
METALLURGY
Status
Email
Parent Application
Applicants
POSCO CO., LTD
(Goedong-dong) 6261 Donghaean-ro,
Nam-gu, Pohang-si,
Gyeongsangbuk-do 37859
Inventors
1. KWON, Ohyeoul
c/o POSCO, (Goedong-dong) 6261, Donghaean-ro,
Nam-gu, Pohang-si,
Gyeongsangbuk-do 37859
2. KIM, Woosin
c/o POSCO, (Goedong-dong) 6261, Donghaean-ro,
Nam-gu, Pohang-si,
Gyeongsangbuk-do 37859
3. HAN, Kyuseok
c/o POSCO, (Goedong-dong) 6261, Donghaean-ro,
Nam-gu, Pohang-si,
Gyeongsangbuk-do 37859
Specification
Documents
Application Documents
| # | Name | Date |
|---|---|---|
| 1 | 202337080554-STATEMENT OF UNDERTAKING (FORM 3) [28-11-2023(online)].pdf | 2023-11-28 |
| 2 | 202337080554-REQUEST FOR EXAMINATION (FORM-18) [28-11-2023(online)].pdf | 2023-11-28 |
| 3 | 202337080554-PROOF OF RIGHT [28-11-2023(online)].pdf | 2023-11-28 |
| 4 | 202337080554-PRIORITY DOCUMENTS [28-11-2023(online)].pdf | 2023-11-28 |
| 5 | 202337080554-POWER OF AUTHORITY [28-11-2023(online)].pdf | 2023-11-28 |
| 6 | 202337080554-FORM 18 [28-11-2023(online)].pdf | 2023-11-28 |
| 7 | 202337080554-FORM 1 [28-11-2023(online)].pdf | 2023-11-28 |
| 8 | 202337080554-DRAWINGS [28-11-2023(online)].pdf | 2023-11-28 |
| 9 | 202337080554-DECLARATION OF INVENTORSHIP (FORM 5) [28-11-2023(online)].pdf | 2023-11-28 |
| 10 | 202337080554-COMPLETE SPECIFICATION [28-11-2023(online)].pdf | 2023-11-28 |
| 11 | 202337080554-FORM 3 [02-02-2024(online)].pdf | 2024-02-02 |
| 12 | 202337080554-certified copy of translation [05-02-2024(online)].pdf | 2024-02-05 |