METHOD FOR CONTROLLING SHAPE OF SHEET USING MULTIPLE ROLLING MILL

Japanese Patent JP3301393

B2

PROBLEM TO BE SOLVED: To control the shape of a sheet with high accuracy with a multiple rolling mill in which intermediate rolls are unconventionally provided between work rolls and back-up rolls.
SOLUTION: At the time of controlling the shape of the sheet of a material 8 to be rolled by executing the rolling controlling the mechanical crown of the intermediate rolls 6, 7 at the time of operation as repeating the operation and stoppage of an intermediate roll shifting rolling mill 1 in which the intermediate rolls 6, 7 are incorporated between the work rolls 2, 3 and back-up rolls 4, 5 comprising the intermediate roll shifting rolling mill 1, based on the deviation (d0-d) of the present hardness (d) of the intermediate rolls 6, 7 at the time of starting the operation from the initial hardness (d0) of the intermediate rolls 6, 7 at the time of first incorporating them in the intermediate roll shifting rolling mill 1, roll profiles in the width direction of the roll caused by the wear of the intermediate rolls 6, 7 at the time of starting the operation are predicted and, based on the predicted roll profiles, the amounts of shift in the axial directions of the intermediate rolls 6, 7 are controlled.

Shunji Kamada

JP24841998A

July 15, 2002

September 02, 1998

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SUMITOMO METAL INDUSTRIES,LTD.

B21B13/14; B21B27/02; B21B37/00; B21B37/28; B21B37/42; B21B38/02; (IPC1-7): B21B37/28; B21B13/14; B21B27/02; B21B37/00; B21B37/42; B21B38/02

JP8243617A
JP6344018A
JP6344016A
JP3294006A

Shoichi Hirose

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