Title:
METHOD FOR CONTROLLING PLATE WIDTH IN HOT FINISHING MILL
Document Type and Number:
Japanese Patent JP3521081
Kind Code:
B2
Abstract:
PROBLEM TO BE SOLVED: To provide a control method of plate width in a hot finishing mill by which the value of the final plate width is exactly controllable in the vicinity of the target value even when the rolling condition is varied during rolling.
SOLUTION: In the final width meter, when a material to be rolled having a certain length is passed, the data of that part are transmitted to an on-line width deformation model identifying device 9. In the on-line width deformation model identifying device 9, a width deformation model which is previously prepared is identified by using these data. In a final width estimating device 10, the width result in the final width meter is predicted in real timing from the measured value with an intermediate width meter and the actual result of rolling on and after the F7 stand on the basis of the identified model. In a device 11 for changing the target value of an intermediate width meter in the Fig. 4, the target value of the intermediate width meter is changed on the basis of the difference between the predicted value of this final width meter and the target set value. Furthermore, the change of the target width value may be performed in a batch or in real timing.
Inventors:
Fukoku OU.
Mizuno, Hiroshi
Murakami, Fumitoshi
Mizuno, Hiroshi
Murakami, Fumitoshi
Application Number:
JP2002008558A
Publication Date:
April 19, 2004
Filing Date:
January 17, 2002
Export Citation:
Assignee:
JFE ENGINEERING KK
International Classes:
B21B37/22; B21B37/00; G05B13/02; G05B13/04; (IPC1-7): B21B37/22; B21B37/00; G05B13/02; G05B13/04
Attorney, Agent or Firm:
細江 利昭