Title:
HIGH STRENGTH COLD ROLLED STEEL SHEET HAVING EXCELLENT SURFACE QUALITY AND LOW MECHANICAL PROPERTY DEVIATION AND MANUFACTURING METHOD OF SAME
Document Type and Number:
WIPO Patent Application WO/2023/048449
Kind Code:
A1
Abstract:
The present invention relates to: a high-strength cold-rolled steel sheet having excellent surface quality and low mechanical property deviation; and a manufacturing method therefor. More particularly, the present invention relates to: a high-strength cold-rolled steel sheet that can be suitably used for automotive parts by ensuring high strength and elongation with little surface defects and low mechanical property deviation; and a manufacturing method therefor.
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Inventors:
KIM SUNG-IL (KR)
RYU JOO-HYUN (KR)
SEO CHANG-HYO (KR)
RYU JOO-HYUN (KR)
SEO CHANG-HYO (KR)
Application Number:
PCT/KR2022/014022
Publication Date:
March 30, 2023
Filing Date:
September 20, 2022
Export Citation:
Assignee:
POSCO CO LTD (KR)
International Classes:
C22C38/04; C21D8/02; C21D9/46; C22C38/00; C22C38/02; C22C38/06; C22C38/22; C22C38/38
Foreign References:
| KR20190091304A | 2019-08-05 | |||
| JP2013103235A | 2013-05-30 | |||
| KR20190076765A | 2019-07-02 | |||
| KR101382854B1 | 2014-04-08 | |||
| US20180171442A1 | 2018-06-21 | |||
| KR20040066935A | 2004-07-27 | |||
| JP2010090432A | 2010-04-22 |
Attorney, Agent or Firm:
C&S PATENT AND LAW OFFICE (KR)
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