Title:
LEVELING CONTROL DEVICE, ROLLING EQUIPMENT PROVIDED WITH SAME, AND LEVELING CONTROL METHOD
Document Type and Number:
WIPO Patent Application WO/2023/037409
Kind Code:
A1
Abstract:
A leveling control device 150 comprises: a torque acquisition unit 161 that finds, from torque measured by each of shape meters 91, 92, 93, 94, 95, 96 which are provided among a plurality of rolling stands, a torque distribution applied in the width direction of a steel sheet 1, such torque distribution being that among each of the plurality of rolling stands; a primary component computation unit 162 that obtains a tension distribution in the width direction from the obtained torque distribution and that obtains a primary component for a case in which a tension distribution of the steel sheet 1 is expressed as a polynomial from the tension distribution; a leveling correction amount computation unit 163 that obtains, on the basis of the obtained primary component, a leveling correction amount of a rolling stand, of the plurality of rolling stands, immediately before a rolling upstream side; and a leveling amount change unit 164 that changes, on the basis of the obtained leveling correction amount, a leveling amount in order from the (final -1)st stand of the plurality of rolling stands toward the rolling upstream side.
More Like This:
Inventors:
FURUMOTO HIDEAKI (JP)
KAGEHIRA KIYOSHI (JP)
KAGEHIRA KIYOSHI (JP)
Application Number:
PCT/JP2021/032839
Publication Date:
March 16, 2023
Filing Date:
September 07, 2021
Export Citation:
Assignee:
PRIMETALS TECH JAPAN LTD (JP)
International Classes:
B21B37/58
Domestic Patent References:
| WO2012086043A1 | 2012-06-28 |
Foreign References:
| JPS6329605B2 | 1988-06-14 | |||
| JPH1133615A | 1999-02-09 | |||
| JPS6329605A | 1988-02-08 |
Attorney, Agent or Firm:
KAICHI IP (JP)
Download PDF: