Title:
ULTRA HIGH STRENGTH HOT ROLLED STEEL SHEET HAVING LOW DEVIATION OF MECHANICAL PROPERTY AND EXCELLENT SURFACE QUALITY, AND METHOD FOR MANUFACTURING SAME
Document Type and Number:
WIPO Patent Application WO/2019/009675
Kind Code:
A8
Abstract:
The present invention relates to an ultra high strength hot rolled steel sheet, having tensile strength of 800MPa, and a method for manufacturing same, the method enabling excellent surface quality, processability and weldability as well as significantly reduced deviation of the mechanical properties in the width and length directions of the steel sheet by means of an endless rolling mode in a continuous casting-direct rolling process.
Inventors:
KONG JONG-PAN (KR)
CHUNG JEA-SOOK (KR)
CHUNG JEA-SOOK (KR)
Application Number:
PCT/KR2018/007718
Publication Date:
March 14, 2019
Filing Date:
July 06, 2018
Export Citation:
Assignee:
POSCO (KR)
International Classes:
C22C38/38; B21B1/46; B21B45/08; C21D1/667; C21D8/02; C21D9/46; C22C38/26; C22C38/28; C22C38/32
Attorney, Agent or Firm:
C&S PATENT AND LAW OFFICE (KR)
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