Method and apparatus for an anticipatory thickness control in fo

Details Method and apparatus for an anticipatory thickness control in fo Method and apparatus for an anticipatory thickness control in fo

1996-03-29

1998-06-30

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 92, 72 147, 72205, 723652, B21B 3758

Patent

active

057717249

ABSTRACT:
A method and an apparatus for an anticipatory thickness control in foil rolling by using characteristic lines stored in a process control computer of the individual manipulated variables (for example, strip tensions, rolling speeds) for various operating points (conditions of operation) or by using an on-line operating physical computing model, also in combination with a monitor control. The method includes the steps of determining the thickness deviations of the foil at the entry side of the roll stand and of compensating the thickness deviations by an anticipatory thickness control. The apparatus includes a thickness measuring device between the running-off reel and the rolling mill or the roll gap of the roll stand. The thickness measuring device is connected to a superordinated process control computer. Following the thickness measuring device is arranged a tensioning unit which serves to change the travel path of the foil strip between the running-off reel and the roll gap. For example, the tensioning unit elongates the travel path.

REFERENCES:
patent: 4548063 (1985-10-01), Cox
patent: 4611479 (1986-09-01), Guttinger
patent: 4809527 (1989-03-01), Mitchell
patent: 4809528 (1989-03-01), Lawson et al.
patent: 4964289 (1990-10-01), Dean
patent: 5018377 (1991-05-01), Lawson
patent: 5142891 (1992-09-01), Kuwano
patent: 5535610 (1996-07-01), Noe et al.

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