ELECTRICAL STEEL SHEET AND MANUFACTURING METHOD THEREFOR

Title:

ELECTRICAL STEEL SHEET AND MANUFACTURING METHOD THEREFOR

Document Type and Number:

WIPO Patent Application WO/2020/111740

Kind Code:

A3

Abstract:

A method for manufacturing an electrical steel sheet, according to one embodiment of the present invention, comprises the steps of: manufacturing a hot rolled sheet by hot rolling a slab; removing some scales formed on the hot rolled sheet, and leaving a scale layer having a thickness of 10 nm or more; controlling the roughness of the hot rolled sheet on which the scale layer remains; cold rolling same so as to manufacture a cold rolled sheet; and annealing the cold rolled sheet.

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Inventors:

KIM HYUN JONG (KR)

Application Number:

PCT/KR2019/016385

Publication Date:

August 13, 2020

Filing Date:

November 26, 2019

Export Citation:

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Assignee:

POSCO (KR)

International Classes:

C22C38/02; B24C1/08; C21D8/12; C22C38/00; C22C38/04; C22C38/06; C22C38/14; H01F1/147

Foreign References:

JP2018066036A	2018-04-26
JPH05186832A	1993-07-27
KR20120105051A	2012-09-24
JP2001073096A	2001-03-21
JP2017197806A	2017-11-02

Attorney, Agent or Firm:

YOU ME PATENT AND LAW FIRM (KR)

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