Title:
LEVELING CONTROL METHOD IN HOT ROLLING, LEVELING CONTROLLER, HOT ROLLING EQUIPMENT, AND METHOD FOR MANUFACTURING HOT ROLLED STEEL STRIP
Document Type and Number:
Japanese Patent JP2023147370
Kind Code:
A
Abstract:
To provide a leveling control method in hot rolling capable of stably controlling a meander of a rolled material by setting the timing of control start and its controlled variable for a rolling mill which is a control object.SOLUTION: A leveling control method in hot rolling includes: a first leveling correction amount calculation step (step S2) of calculating, after the tail end part of a rolled material S has passed through a rolling mill n(any of 1-N-3) from the top, a first leveling correct ion amount ΔLv1 on and after a control object rolling mill Fn+3, on the basis of a meander amount detected by the first meander detection device 13 installed between the rolling mill Fn and the rolling mill Fn+1; and a second leveling correction amount calculation step (step S4) of calculating, after the tail end part of a rolled material S has passed through a rolling mill Fn+2, a second leveling correction amount ΔLv2 on and after a control object rolling mill Fn+3, on the basis of a meander amount detected by a second meander detection device 16 installed between the rolling mill Fn+2 and the rolling mill Fn+3.SELECTED DRAWING: Figure 2
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Inventors:
YAMAGUCHI HIDEHITO
OGASAWARA TOMOYOSHI
GOTO HIROTO
KOMIYA KENTARO
OGASAWARA TOMOYOSHI
GOTO HIROTO
KOMIYA KENTARO
Application Number:
JP2022054826A
Publication Date:
October 13, 2023
Filing Date:
March 30, 2022
Export Citation:
Assignee:
JFE STEEL CORP
International Classes:
B21B37/68; B21B37/00; B21B37/58; B21B38/02; B21C51/00
Attorney, Agent or Firm:
田中 秀▲てつ▼
Hajime Hirose
Toru Miyasaka
Tetsuya Mori
Hajime Hirose
Toru Miyasaka
Tetsuya Mori