Title:
CONTROL SYSTEM FOR TANDEM COLD ROLLING MILL
Document Type and Number:
WIPO Patent Application WO/2022/049739
Kind Code:
A1
Abstract:
In a plate thickness control process, first, a transfer process of an inlet-side plate thickness He(N) is performed (step S1). In the transfer process, data on the inlet-side plate thickness He(N) measured by a plate thickness gauge 11 is transferred at the same speed as the speed of a to-be-rolled material M from a position P11 (the installation location of the inlet-side plate thickness gauge 11) to a position P12 (the installation location of an outlet-side plate thickness gauge 12). Subsequently, a plate thickness change amount ΔH(N) is calculated (step S2). The plate thickness change amount ΔH(N) is calculated on the basis of data on the outlet-side plate thickness Hd(N) and data on the transferred plate thickness Hc(N) transferred to the position P12 at a timing when the data on the outlet-side plate thickness Hd(N) is measured. Subsequently, an inlet-side target plate thickness He(N)_tgt is calculated (step S3). The inlet-side target plate thickness He(N)_tgt is calculated on the basis of the data on the plate thickness change amount ΔH(N) and data on an outlet-side target plate thickness Hd(N)_tgt. Subsequently, the operation amounts for roll speeds VR(N-2) and VR(Nk) are calculated (step S4).
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Inventors:
TEZUKA TOMOYUKI (JP)
Application Number:
PCT/JP2020/033656
Publication Date:
March 10, 2022
Filing Date:
September 04, 2020
Export Citation:
Assignee:
TOSHIBA MITSUBISHI ELEC IND (JP)
International Classes:
B21B37/20; B21B1/22
Foreign References:
| JPH0768305A | 1995-03-14 | |||
| JPH11342409A | 1999-12-14 | |||
| JPS58309A | 1983-01-05 | |||
| JPS5997709A | 1984-06-05 | |||
| JP2018134661A | 2018-08-30 |
Attorney, Agent or Firm:
TAKADA, Mamoru et al. (JP)
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