Title:
HIGH-STRENGTH HOT-ROLLED STEEL SHEET HAVING LOW DEVIATION OF MATERIAL PROPERTIES AND EXCELLENT SURFACE QUALITY, AND METHOD FOR MANUFACTURING SAME
Document Type and Number:
WIPO Patent Application WO/2018/117575
Kind Code:
A1
Abstract:
The purpose of the present invention is to provide a high-strength hot-rolled steel sheet and a method for manufacturing same, wherein, in order to overcome the problem of existing mini-mill processes, an endless rolling mode is used in a process that directly combines continuous casting and rolling, thereby providing a hot-rolled steel sheet which has excellent surface quality, has noticeably reduced a deviation of material properties in the transverse and longitudinal directions thereof, and has a tensile strength of about 780MPa.
Inventors:
KONG JONG-PAN (KR)
CHUNG JEA-SOOK (KR)
PARK KYO-SUN (KR)
PARK KYEONG-MI (KR)
CHUNG JEA-SOOK (KR)
PARK KYO-SUN (KR)
PARK KYEONG-MI (KR)
Application Number:
PCT/KR2017/014963
Publication Date:
June 28, 2018
Filing Date:
December 18, 2017
Export Citation:
Assignee:
POSCO (KR)
International Classes:
C22C38/38; C21D8/02; C22C38/02; C22C38/06; C22C38/22; C22C38/28; C22C38/60
Foreign References:
| KR20120052022A | 2012-05-23 | |||
| KR20120049992A | 2012-05-18 | |||
| KR20130116329A | 2013-10-23 | |||
| KR20140085188A | 2014-07-07 | |||
| JP2010189738A | 2010-09-02 |
Attorney, Agent or Firm:
C&S PATENT AND LAW OFFICE (KR)
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