Title:
ULTRA-HIGH STRENGTH COLD-ROLLED STEEL SHEET HAVING EXCELLENT HOLE-EXPANDABILITY AND METHOD FOR MANUFACTURING SAME
Document Type and Number:
WIPO Patent Application WO/2023/048495
Kind Code:
A1
Abstract:
The present invention relates to an ultra-high strength cold-rolled steel sheet having excellent hole expandability and a method for manufacturing same and, more specifically, to an ultra-high strength cold-rolled steel sheet having excellent hole expandability which can be mainly used for structural members and to ensure safety in the event of an automobile collision, and to a method for manufacturing same.
Inventors:
KOO MIN-SEO (KR)
KIM EUN-YOUNG (KR)
KIM SANG-HYUN (KR)
KIM EUN-YOUNG (KR)
KIM SANG-HYUN (KR)
Application Number:
PCT/KR2022/014244
Publication Date:
March 30, 2023
Filing Date:
September 23, 2022
Export Citation:
Assignee:
POSCO CO LTD (KR)
International Classes:
C22C38/38; C21D8/02; C22C38/00; C22C38/22; C22C38/26; C22C38/28; C22C38/32; C22C38/42; C22C38/58
Domestic Patent References:
| WO2021070951A1 | 2021-04-15 |
Foreign References:
| CN113166828A | 2021-07-23 | |||
| CN111748745A | 2020-10-09 | |||
| KR20200121872A | 2020-10-26 | |||
| KR20200062428A | 2020-06-04 |
Attorney, Agent or Firm:
C&S PATENT AND LAW OFFICE (KR)
Download PDF: