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/2023/048448
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 thereof and, more particularly, 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 thereof.
Inventors:
RYU JOO-HYUN (KR)
KIM SUNG-IL (KR)
SEO CHANG-HYO (KR)
KIM SUNG-IL (KR)
SEO CHANG-HYO (KR)
Application Number:
PCT/KR2022/014012
Publication Date:
March 30, 2023
Filing Date:
September 20, 2022
Export Citation:
Assignee:
POSCO CO LTD (KR)
International Classes:
C22C38/02; B21C47/02; C21D8/02; C22C38/00; C22C38/04; C22C38/06
Domestic Patent References:
| WO2020203159A1 | 2020-10-08 |
Foreign References:
| KR20200101980A | 2020-08-28 | |||
| KR20210080044A | 2021-06-30 | |||
| JP2021063253A | 2021-04-22 | |||
| KR20140102309A | 2014-08-21 |
Attorney, Agent or Firm:
C&S PATENT AND LAW OFFICE (KR)
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