Login| Sign Up| Help| Contact|

Patent Searching and Data


Title:
GRAIN-ORIENTED ELECTRICAL STEEL SHEET AND MANUFACTURING METHOD THEREFOR
Document Type and Number:
WIPO Patent Application WO/2021/125738
Kind Code:
A1
Abstract:
One embodiment of the present invention provides a grain-oriented electrical steel sheet and a manufacturing method therefor, the grain-oriented electrical steel sheet comprising, by wt%, 3.0-4.5% of Si, 0.05-0.2% of Mn, 0.015-0.035% of Al, 0.0015% or less (excluding 0%) of C, 0.0015% or less (excluding 0%) of N, 0.0015% or less (excluding 0%) of S, and the balance of Fe and inevitable impurities, and satisfying the following relations 1 and 2. [Relation 1] (W 13/50/W 17/50) ≤ 0.57 [Relation 2] (W 15/50/W 17/50) ≤ 0.76 In relation 1, Wx/y represents a core loss value under conditions in which the magnitude of an applied magnetic field is x/10T and the frequency is in yHz.

Inventors:
PARK CHANG-SOO (KR)
HAN KYU-SEOK (KR)
SEO JIN-WOOK (KR)
BAK YU-JUN (KR)
Application Number:
PCT/KR2020/018330
Publication Date:
June 24, 2021
Filing Date:
December 15, 2020
Export Citation:
Click for automatic bibliography generation   Help
Assignee:
POSCO (KR)
International Classes:
C22C38/02; B21B1/24; B21B3/00; C21D8/02; C22C38/00; C22C38/04; C22C38/06
Foreign References:
KR20130014889A2013-02-12
KR20180107195A2018-10-01
KR20180072106A2018-06-29
JP2001158950A2001-06-12
JP2008261013A2008-10-30
Other References:
See also references of EP 4079886A4
Attorney, Agent or Firm:
C&S PATENT AND LAW OFFICE (KR)
Download PDF: