Method for shape control in rolling mill and device for shape control in rolling mill
AssigneeJfe Steel Corporation
InventorsKenji SUZUKI, Yoshimitsu HARADA
Life of this patent
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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.
Claims2
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.
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.
Dependencies are inferred from the claim text.