Title:
NON-ORIENTED ELECTRICAL STEEL SHEET AND METHOD FOR MANUFACTURING SAME
Document Type and Number:
WIPO Patent Application WO/2023/121220
Kind Code:
A1
Abstract:
A non-oriented electrical steel sheet according to one embodiment of the present invention comprises, in weight %, 0.005% or less (excluding 0%) of C, 1.5-3.0% of Si, 0.4-1.5% of Mn, 0.005% or less (excluding 0%) of S, 0.0001-0.7% of Al, 0.005% or less (excluding 0%) of N, 0.005% or less (excluding 0%) of Ti, 0.001-0.02% of Cu, 0.01-0.05% of Sb, 0.001-0.1% of Sn, 0.005-0.07% of P, and the balance of Fe and inevitable impurities, wherein the Mn content, Si content, and Al content satisfy [Expression 1], the Sb content, Sn content, and P content satisfy [Expression 2], and the number of (Mn, Cu)S precipitates having a size of 0.5 μm or less per unit area is 1/μm3 or less. [Expression 1] 0.19 ≤ [Mn]/([Si]+150x[Al]) ≤ 0.35 [Expression 2] 1/2*Sn < [Sb]+[P] < 0.09
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Inventors:
JOO HYUNG DON (KR)
HONG JAEWAN (KR)
KIM YONG-SOO (KR)
PARK JUNESOO (KR)
KIM YUNSU (KR)
HONG JAEWAN (KR)
KIM YONG-SOO (KR)
PARK JUNESOO (KR)
KIM YUNSU (KR)
Application Number:
PCT/KR2022/020833
Publication Date:
June 29, 2023
Filing Date:
December 20, 2022
Export Citation:
Assignee:
POSCO CO LTD (KR)
International Classes:
C22C38/02; C21D8/12; C22C38/04; C22C38/06; C22C38/14; C22C38/16; H01F1/147
Foreign References:
| KR101353460B1 | 2014-01-21 | |||
| US20200332388A1 | 2020-10-22 | |||
| KR101353462B1 | 2014-01-24 | |||
| JP2019035116A | 2019-03-07 | |||
| US10704115B2 | 2020-07-07 | |||
| KR102468079B1 | 2022-11-16 |
Attorney, Agent or Firm:
YOU ME PATENT AND LAW FIRM (KR)
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