US2023133751A1PendingUtilityA1

Method for shape control in rolling mill and device for shape control in rolling mill

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Assignee: JFE STEEL CORPPriority: Mar 23, 2020Filed: Feb 12, 2021Published: May 4, 2023
Est. expiryMar 23, 2040(~13.6 yrs left)· nominal 20-yr term from priority
Inventors:Kenji SuzukiYoshimitsu Harada
B21B 37/28B21B 2267/18B21B 37/40B21B 2263/02B21C 51/00B21B 37/38B21B 37/42B21B 1/24B21B 38/02B21B 2269/16B21B 2263/00B21B 13/142B21B 2269/06B21B 37/16
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Claims

Abstract

A method for shape control in a rolling mill includes: a measurement step of measuring a shape of a steel sheet on a delivery side of the rolling mill; and a control step of controlling the rolling mill in a manner that the shape of the steel sheet falls within an allowable range, based on the shape of the steel sheet measured at the measurement step, wherein the control step includes a step of setting a control gain smaller than a control gain for a width of a steel sheet as a target for rolling being equal to or smaller than the predetermined value when the steel sheet as the target for rolling has a width greater than a predetermined value.

Claims

exact text as granted — not AI-modified
1 . A method for shape control in a rolling mill, the method comprising:
 a measurement step of measuring a shape of a steel sheet on a delivery side of the rolling mill; and   a control step of controlling the rolling mill in a manner that the shape of the steel sheet falls within an allowable range, based on the shape of the steel sheet measured at the measurement step, wherein   the control step includes a step of setting a control gain smaller than a control gain for a width of a steel sheet as a target for rolling being equal to or smaller than the predetermined value when the steel sheet as the target for rolling has a width greater than a predetermined value.   
     
     
         2 . A device for shape control in a rolling mill, comprising:
 a measurement unit configured to measure a shape of a steel sheet on a delivery side of the rolling mill; and   a control unit configured to control the rolling mill in a manner that the shape of the steel sheet falls within an allowable range, based on the shape of the steel sheet measured by the measurement unit, wherein   the control unit sets a control gain smaller than a control gain for a width of a steel sheet as a target for rolling being equal to or smaller than the predetermined value when the steel sheet as the target for rolling has a width greater than a predetermined value.

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