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Non Oriented Electrical Steel Sheets Having High Workability For Client Companies And Manufacturing Method Thereof
Abstract: The present invention relates to non-oriented electrical steel sheets that are magnetized by SRA treatment and a manufacturing method thereof. The technical essence of the invention lies in: the non-oriented electrical steel sheets having strong magnetism by SRA treatment and comprising Si: 0.2 ~ 1.0%, Al: 0.9 ~ 2.0%, Mn: 0.1 ~ 0.5%, P: 0.01 ~ 0.05, the remaining % Fe; and other inevitable impurities, wherein Si and Al satisfy equations of 1.4≤Si + Al≤2.4 and 1≤Al/Si≤5; and the manufacturing method thereof. The present invention improves workability for client companies by obtaining a low Vickers hardness through deriving optimal process conditions and adjusting elements of Al and Si to optimum levels, and results in magnetism with high magnetic density and reduces iron loss through enhancing grain growth and improving texture.
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Notices, Deadlines & Correspondence
Notices, Deadlines & Correspondence
Patent Information
Application #
Filing Date
16 June 2011
Publication Number
17/2012
Publication Type
INA
Invention Field
METALLURGY
Status
Email
Parent Application
Patent Number
Legal Status
Grant Date
2019-03-01
Renewal Date
Applicants
POSCO
#1 Goedong-dong Nam-gu Pohang-si Gyeongsangbuk-do 790-300 Republic of Korea.
Inventors
1. KIM Jae-Hoon
c/o POSCO #1 Goedong-dong Nam-gu Pohang-si Gyeongsangbuk-do 790-300 Republic of Korea.
2. KIM Yong-Soo
c/o POSCO #1 Goedong-dong Nam-gu Pohang-si Gyeongsangbuk-do 790-300 Republic of Korea.
3. KIM Jae-Kwan
c/o POSCO #1 Goedong-dong Nam-gu Pohang-si Gyeongsangbuk-do 790-300 Republic of Korea.
4. BONG Won-Seog
c/o POSCO #1 Goedong-dong Nam-gu Pohang-si Gyeongsangbuk-do 790-300 Republic of Korea.
Specification
Attached
Documents
Application Documents
| # | Name | Date |
|---|---|---|
| 1 | 4637-DELNP-2011-GPA-(04-07-2011).pdf | 2011-07-04 |
| 1 | 4637-DELNP-2011-RELEVANT DOCUMENTS [05-09-2023(online)].pdf | 2023-09-05 |
| 2 | 4637-DELNP-2011-Form-18-(04-07-2011).pdf | 2011-07-04 |
| 2 | 4637-DELNP-2011-RELEVANT DOCUMENTS [24-09-2022(online)].pdf | 2022-09-24 |
| 3 | 4637-DELNP-2011-RELEVANT DOCUMENTS [22-09-2021(online)].pdf | 2021-09-22 |
| 3 | 4637-DELNP-2011-Correspondence Others-(04-07-2011).pdf | 2011-07-04 |
| 4 | Priority Document.pdf | 2011-08-21 |
| 4 | 4637-DELNP-2011-RELEVANT DOCUMENTS [30-08-2021(online)].pdf | 2021-08-30 |
| 5 | Power of Authority.pdf | 2011-08-21 |
| 5 | 4637-DELNP-2011-RELEVANT DOCUMENTS [09-03-2020(online)].pdf | 2020-03-09 |
| 6 | Form-5.pdf | 2011-08-21 |
| 6 | 4637-DELNP-2011-IntimationOfGrant01-03-2019.pdf | 2019-03-01 |
| 7 | Form-3.pdf | 2011-08-21 |
| 7 | 4637-DELNP-2011-PatentCertificate01-03-2019.pdf | 2019-03-01 |
| 8 | Form-1.pdf | 2011-08-21 |
| 8 | 4637-DELNP-2011-ABSTRACT [05-01-2018(online)].pdf | 2018-01-05 |
| 9 | 4637-DELNP-2011-CLAIMS [05-01-2018(online)].pdf | 2018-01-05 |
| 9 | Drawings.pdf | 2011-08-21 |
| 10 | 4637-DELNP-2011-COMPLETE SPECIFICATION [05-01-2018(online)].pdf | 2018-01-05 |
| 10 | 4637-delnp-2011-Form-3-(21-10-2011).pdf | 2011-10-21 |
| 11 | 4637-delnp-2011-Correspondence Others-(21-10-2011).pdf | 2011-10-21 |
| 11 | 4637-DELNP-2011-CORRESPONDENCE [05-01-2018(online)].pdf | 2018-01-05 |
| 12 | 4637-delnp-2011-Assignment-(21-10-2011).pdf | 2011-10-21 |
| 12 | 4637-DELNP-2011-DRAWING [05-01-2018(online)].pdf | 2018-01-05 |
| 13 | 4637-DELNP-2011-FER.pdf | 2017-07-06 |
| 13 | 4637-DELNP-2011-FER_SER_REPLY [05-01-2018(online)].pdf | 2018-01-05 |
| 14 | 4637-DELNP-2011-Information under section 8(2) (MANDATORY) [12-09-2017(online)].pdf | 2017-09-12 |
| 14 | 4637-DELNP-2011-OTHERS [05-01-2018(online)].pdf | 2018-01-05 |
| 15 | 4637-DELNP-2011-Correspondence-150917.pdf | 2017-09-20 |
| 15 | 4637-DELNP-2011-FORM 3 [12-09-2017(online)].pdf | 2017-09-12 |
| 16 | 4637-DELNP-2011-certified copy of translation (MANDATORY) [14-09-2017(online)].pdf | 2017-09-14 |
| 16 | 4637-DELNP-2011-OTHERS-150917.pdf | 2017-09-20 |
| 17 | 4637-DELNP-2011-OTHERS-150917.pdf | 2017-09-20 |
| 17 | 4637-DELNP-2011-certified copy of translation (MANDATORY) [14-09-2017(online)].pdf | 2017-09-14 |
| 18 | 4637-DELNP-2011-Correspondence-150917.pdf | 2017-09-20 |
| 18 | 4637-DELNP-2011-FORM 3 [12-09-2017(online)].pdf | 2017-09-12 |
| 19 | 4637-DELNP-2011-Information under section 8(2) (MANDATORY) [12-09-2017(online)].pdf | 2017-09-12 |
| 19 | 4637-DELNP-2011-OTHERS [05-01-2018(online)].pdf | 2018-01-05 |
| 20 | 4637-DELNP-2011-FER.pdf | 2017-07-06 |
| 20 | 4637-DELNP-2011-FER_SER_REPLY [05-01-2018(online)].pdf | 2018-01-05 |
| 21 | 4637-delnp-2011-Assignment-(21-10-2011).pdf | 2011-10-21 |
| 21 | 4637-DELNP-2011-DRAWING [05-01-2018(online)].pdf | 2018-01-05 |
| 22 | 4637-delnp-2011-Correspondence Others-(21-10-2011).pdf | 2011-10-21 |
| 22 | 4637-DELNP-2011-CORRESPONDENCE [05-01-2018(online)].pdf | 2018-01-05 |
| 23 | 4637-DELNP-2011-COMPLETE SPECIFICATION [05-01-2018(online)].pdf | 2018-01-05 |
| 23 | 4637-delnp-2011-Form-3-(21-10-2011).pdf | 2011-10-21 |
| 24 | Drawings.pdf | 2011-08-21 |
| 24 | 4637-DELNP-2011-CLAIMS [05-01-2018(online)].pdf | 2018-01-05 |
| 25 | Form-1.pdf | 2011-08-21 |
| 25 | 4637-DELNP-2011-ABSTRACT [05-01-2018(online)].pdf | 2018-01-05 |
| 26 | Form-3.pdf | 2011-08-21 |
| 26 | 4637-DELNP-2011-PatentCertificate01-03-2019.pdf | 2019-03-01 |
| 27 | Form-5.pdf | 2011-08-21 |
| 27 | 4637-DELNP-2011-IntimationOfGrant01-03-2019.pdf | 2019-03-01 |
| 28 | Power of Authority.pdf | 2011-08-21 |
| 28 | 4637-DELNP-2011-RELEVANT DOCUMENTS [09-03-2020(online)].pdf | 2020-03-09 |
| 29 | Priority Document.pdf | 2011-08-21 |
| 29 | 4637-DELNP-2011-RELEVANT DOCUMENTS [30-08-2021(online)].pdf | 2021-08-30 |
| 30 | 4637-DELNP-2011-RELEVANT DOCUMENTS [22-09-2021(online)].pdf | 2021-09-22 |
| 30 | 4637-DELNP-2011-Correspondence Others-(04-07-2011).pdf | 2011-07-04 |
| 31 | 4637-DELNP-2011-Form-18-(04-07-2011).pdf | 2011-07-04 |
| 31 | 4637-DELNP-2011-RELEVANT DOCUMENTS [24-09-2022(online)].pdf | 2022-09-24 |
| 32 | 4637-DELNP-2011-GPA-(04-07-2011).pdf | 2011-07-04 |
| 32 | 4637-DELNP-2011-RELEVANT DOCUMENTS [05-09-2023(online)].pdf | 2023-09-05 |
Search Strategy
| 1 | searchstrategy_17-03-2017.pdf |