Title:
GRAIN-ORIENTED ELECTRICAL STEEL SHEET AND METHOD FOR MANUFACTURING SAME
Document Type and Number:
WIPO Patent Application WO/2021/125681
Kind Code:
A2
Abstract:
A method for manufacturing a grain-oriented electrical steel sheet according to an embodiment of the present invention comprises the steps of: hot-rolling a slab to prepare a hot-rolled sheet, the slab containing, in wt%, 2.0 to 6.0% of Si, 0.04 to 0.12% of Mn, 0.001 to 0.022% of N, 0.027 to 0.060% of C, 0.01 to 0.08% of Nb, 0.01% or less of Ti, and the balance of Fe and other inevitable impurities; cold-rolling the hot-rolled sheet to prepare a cold-rolled sheet; subjecting the cold-rolled sheet to primary recrystallization annealing; and subjecting the primarily recrystallization-annealed cold-rolled sheet to secondary recrystallization annealing.
Inventors:
SONG DAE-HYUN (KR)
PARK JUNESOO (KR)
LEE SANG-WOO (KR)
PARK JUNESOO (KR)
LEE SANG-WOO (KR)
Application Number:
PCT/KR2020/017974
Publication Date:
June 24, 2021
Filing Date:
December 09, 2020
Export Citation:
Assignee:
POSCO (KR)
International Classes:
C21D8/12; B21B1/24; C22C38/02; C22C38/04; C22C38/12; C22C38/14; C22C38/18; C22C38/60
Attorney, Agent or Firm:
YOU ME PATENT AND LAW FIRM (KR)
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