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Patent Searching and Data


Title:
HOT ROLLED STEEL STRIP MEANDER CONTROL METHOD AND MEANDER CONTROL DEVICE, AND HOT ROLLING EQUIPMENT
Document Type and Number:
WIPO Patent Application WO/2021/014811
Kind Code:
A1
Abstract:
Provided are a hot rolled steel strip meander control method and meander control device, and hot rolling equipment, with which it is possible for a leveling amount to be adjusted appropriately with respect to an amount of meander of a hot rolled steel strip that varies from moment to moment, by reducing the time taken for processing to compute the amount of meander in order to reduce the calculation period of the amount of meander. This steel strip meander control method includes: an imaging step (step S1) of imaging the surface of a traveling steel strip (10) using a line sensor camera (5) installed between adjacent rolling mills (F6), (F7); a meander amount calculating step (step S2) of calculating an amount of meander of the steel strip (10) by detecting the positions of both edge portions in the width direction of the steel strip (10) from a one-dimensional brightness distribution based on the captured image; and a leveling control computation step (step S3) of computing the difference between roll opening degrees on the operation side and the drive side of the rolling mill (F7) immediately downstream of the line sensor camera (5), on the basis of the calculated amount of meander of the steel strip (10). The imaging carried out by the line sensor camera (5) in the imaging step is performed with a period of 5 msec or less.

Inventors:
GOTO HIROTO (JP)
SUE TATSUHIRO (JP)
YAMAGUCHI HIDETO (JP)
TAKASHIMA YUKIO (JP)
Application Number:
PCT/JP2020/023099
Publication Date:
January 28, 2021
Filing Date:
June 11, 2020
Export Citation:
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Assignee:
JFE STEEL CORP (JP)
International Classes:
B21B37/58; B21B37/68; B21B38/00
Foreign References:
JPH06167327A1994-06-14
JPS63225107A1988-09-20
Attorney, Agent or Firm:
TANAKA Hidetetsu et al. (JP)
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