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Title:
HIGH-STRENGTH COLD-ROLLED STEEL SHEET HAVING EXCELLENT SURFACE QUALITY AND LOW MATERIAL VARIATION, AND METHOD FOR MANUFACTURING SAME
Document Type and Number:
WIPO Patent Application WO/2023/048450
Kind Code:
A1
Abstract:
The present invention pertains to a high-strength cold-rolled steel sheet having excellent surface quality and low material variation, and a method for manufacturing same. More specifically, the present invention pertains to: a high-strength cold-rolled steel sheet which has few surface defects and little material deviation, as well as high strength and elongation, and is thus suitable for use in automotive parts; and a method for manufacturing same.

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Inventors:
SEO CHANG-HYO (KR)
KIM SUNG-IL (KR)
RYU JOO-HYUN (KR)
Application Number:
PCT/KR2022/014023
Publication Date:
March 30, 2023
Filing Date:
September 20, 2022
Export Citation:
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Assignee:
POSCO CO LTD (KR)
International Classes:
C22C38/04; B21C47/02; C21D8/02; C21D9/46; C22C38/00; C22C38/02; C22C38/06
Foreign References:
JP2013163827A2013-08-22
JP2013103235A2013-05-30
KR20190076765A2019-07-02
KR20160024681A2016-03-07
US20180171442A12018-06-21
KR20040066935A2004-07-27
JP2010090432A2010-04-22
Attorney, Agent or Firm:
C&S PATENT AND LAW OFFICE (KR)
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