Title:
PLATE PASSING METHOD IN CONTINUOUS HOT ROLLING AND HOT-ROLLED STEEL STRIP MANUFACTURING METHOD
Document Type and Number:
Japanese Patent JP2018027556
Kind Code:
A
Abstract:
PROBLEM TO BE SOLVED: To provide a plate passing method that enables continuous hot rolling to be carried out without breaking a joined part during finish rolling, and a hot-rolled steep strip manufacturing method.SOLUTION: This plate passing method includes the finish rolling step of executing, for one or more of all of five to seven stands of a finish rolling machine during passage of a joined part α formed by joining through the finish rolling machine 7 after the tail end of a preceding steel piece S1 and the tip of a succeeding steel piece S2 are joined on the inlet side of the finish rolling machine 7 on a continuous hot rolling line, at least one selected from: keeping a pressure reduction rate constant; controlling the pressure reduction rate so as to keep a roll gap constant; keeping looper torque constant; and controlling the looper torque so as to keep a looper height constant.SELECTED DRAWING: Figure 2
Inventors:
OKAZAKI TOSHIRO
UENO MASAYASU
MATSUMOTO YUKI
UMINO TAKANORI
KIJIMA HIDEO
UENO MASAYASU
MATSUMOTO YUKI
UMINO TAKANORI
KIJIMA HIDEO
Application Number:
JP2016160337A
Publication Date:
February 22, 2018
Filing Date:
August 18, 2016
Export Citation:
Assignee:
JFE STEEL CORP
International Classes:
B21B1/26; B21B15/00; B23K13/01
Attorney, Agent or Firm:
Shigeru Inoue
Kazuhiro Mori
Kazuhiro Mori