Metal deforming – With use of control means energized in response to activator... – Metal deforming by use of roller or roller-like tool element
Patent
1992-09-28
1994-07-05
Larson, Lowell A.
Metal deforming
With use of control means energized in response to activator...
Metal deforming by use of roller or roller-like tool element
72 11, 72 17, B21B 3700
Patent
active
053256921
ABSTRACT:
A method of controlling a transverse shape of a strip rolled by a rolling mill having a plurality of shape correcting devices, the method including the steps of detecting a change in a strip rolling force, and a tension distribution of the rolled strip in the width direction. Based on the detected tension distribution, a strain distribution of the rolled strip is calculated, and the calculated strain distribution is used to calculate a shape parameter which represents a shape error of the rolled strip. Based on the detected change in the rolling force and the calculated shape parameter, disturbance values of the rolling mill which should be zeroed by the shape correcting devices are estimated so as to offset a delay in the detection of the tension distribution which is reflected on the shape parameter. The shape correcting devices are controlled according to the estimated disturbance values, without an influence of the delay in the detection of the tension distribution.
REFERENCES:
patent: 4587819 (1986-05-01), Hausen
patent: 4633693 (1987-01-01), Tahara et al.
patent: 4726213 (1988-02-01), Manchu
patent: 4753093 (1988-06-01), Siemon et al.
Abe Teiichi
Hoshino Ikuya
Kimura Atsushi
Maekawa Yukihiro
Matsuura Tatsuro
Larson Lowell A.
Schoeffler Thomas C.
Sumitomo Light Metal Industries Ltd.
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