Title:
PLATE THICKNESS CONTROL METHOD FOR ROLLING MILL AND RIGIDITY MONITORING METHOD
Document Type and Number:
WIPO Patent Application WO/2024/033983
Kind Code:
A1
Abstract:
The present disclosure provides a plate thickness control method for a rolling mill whereby it is possible to calculate an appropriate gap correction amount for the rolling mill on the basis of the amount of change in a rolling load between a previous material and a material in question, and to thus improve plate thickness precision. The plate thickness control method for a rolling mill includes: a step in which a rolled coil rolled immediately beforehand by a rolling mill is designated as a previous material, a rolled coil rolled after the previous material is designated as a material in question, the relationship between the amount of change in a rolling load between the previous material and the material in question and the amount of change in a gap error regarding the rolling mill is approximated sequentially by means of a regression model, and a gap error in the rolling of the material in question is predicted on the basis of the regression model; a step in which a gap setting amount in rolling of the material in question is corrected on the basis of the predicted value of the gap error; and a step in which a regression coefficient of the regression model is updated on the basis of the actual rolling load obtained by rolling the material in question and the amount of change in the actual gap error.
Inventors:
SHIMOTANI TOSHIHITO (JP)
Application Number:
PCT/JP2022/030309
Publication Date:
February 15, 2024
Filing Date:
August 08, 2022
Export Citation:
Assignee:
TOSHIBA MITSUBISHI ELECTRIC INDUSTRIAL SYSTEMS CORP (JP)
International Classes:
B21B37/58; B21B37/20; B21B37/64
Foreign References:
| JPH07227609A | 1995-08-29 | |||
| JPH0332411A | 1991-02-13 | |||
| JPH09276915A | 1997-10-28 | |||
| JPS51119362A | 1976-10-19 |
Attorney, Agent or Firm:
TAKADA, TAKAHASHI & PARTNERS (JP)
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