Title:
NON-ORIENTED ELECTRICAL STEEL SHEET AND METHOD FOR PRODUCING SAME
Document Type and Number:
WIPO Patent Application WO/2020/130644
Kind Code:
A3
Abstract:
A non-oriented electrical steel sheet according to one embodiment of the present invention comprises: 0.005 wt% or less (exclusive of 0 wt%) of C; 0.5-2.4 wt% of Si; 0.4-1.0 wt% of Mn; 0.005 wt% or less (exclusive of 0 wt%) of S; 0.01 wt% or less (exclusive of 0 wt%) of Al; 0.005 wt% or less (exclusive of 0 wt%) of N; 0.005 wt% or less (exclusive of 0 wt%) of Ti; and 0.001-0.02 wt% of Cu, with the balance being Fe and inevitable impurities, and satisfies formula 1 below, wherein crystal grains in which the angle between the {111} plane and the rolling plane is 15° or less constitute at least 27% of the steel sheet by volume fraction. [Formula 1] 0.19 ≤ [Mn]/([Si] + 150×[Al]) ≤ 0.35 (In formula 1, [Mn], [Si] and [Al] represent the contents (wt%) of Mn, Si and Al, respectively.)
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Inventors:
PARK JUNE SOO (KR)
SONG DAE-HYUN (KR)
SONG DAE-HYUN (KR)
Application Number:
PCT/KR2019/018032
Publication Date:
September 24, 2020
Filing Date:
December 18, 2019
Export Citation:
Assignee:
POSCO (KR)
International Classes:
C22C38/02; B21B3/00; C21D8/12; C22C38/00; C22C38/04; C22C38/06; C22C38/14; C22C38/16
Foreign References:
| JP2004332031A | 2004-11-25 | |||
| KR20170117568A | 2017-10-23 | |||
| JP2001123252A | 2001-05-08 | |||
| KR101707452B1 | 2017-02-16 | |||
| KR101701195B1 | 2017-02-01 |
Attorney, Agent or Firm:
YOU ME PATENT AND LAW FIRM (KR)
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