Metal deforming – With use of control means energized in response to activator... – Metal deforming by use of roller or roller-like tool element
Patent
1978-11-07
1980-04-29
Mehr, Milton S.
Metal deforming
With use of control means energized in response to activator...
Metal deforming by use of roller or roller-like tool element
B21B 3706
Patent
active
041999673
ABSTRACT:
The forward slip and the backward slip at a first stand are dependant upon a draft, the back tension, the front tension, and the shape of a sheet in a tandem type rolling mill. It is difficult to control the shape solely by detecting the tension distribution between the last stand and the tension reel.
In the method of this invention, the shape of a rolled sheet is controlled by disposing a first shape meters between the pay-off reel and the first stand and a second shape meter between the last stand and the tension reel whereby shape control can be attained through a simple system.
Tension distributions detected by the two shape meters are functions of the forward slip and the backward slip. Accordingly the forward slips and the backward slips at all other stands except the first and last stands need not be considered when the tension distributions between the pay-off reel and the first stand and between the last stand and the tension reel are detected and the sums of these tension distributions produce a desired pattern. The shape control is attained by disposing a first shape meter at the input side of the first stand and a second shape meter at the output side of the last stand and by controlling the roll bending force and/or a roll coolant available at each stand so as to produce the sum in the desired pattern.
REFERENCES:
patent: 3882709 (1975-05-01), Kawamoto et al.
patent: 3934438 (1976-01-01), Arimura et al.
"Asea-Alcan AFC System . . .", Sivilotti et al., Iron & Steel Engr., Jun. 1973 pp. 83-90.
"Design and Development of a Metal Control System", Bravington et al., Met. Soc. (183), 1976, pp. 82-88.
"Operational Experience with a Vidiman Shapemeter . . .", Van Haperen et al., Met. Soc. (183), 1976, pp. 63-70.
Ikemi Shinichi
Ohba Koichi
Mehr Milton S.
Mitsubishi Denki & Kabushiki Kaisha
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