Control process for a roll stand for rolling a strip

Details Control process for a roll stand for rolling a strip Control process for a roll stand for rolling a strip

1997-05-08

1999-02-23

Hail, III, Joseph J.

Metal deforming

With use of control means energized in response to activator...

Metal deforming by use of roller or roller-like tool element

72 86, 72 114, 72 123, B21B 3700

Patent

active

058732772

ABSTRACT:
The invention relates to a control process for a roll stand consisting of a pair of work rolls, a pair of backup rolls, and optionally a pair of intermediary rolls. The controls for a rolling force, a deflecting force, and optionally a roll shift are given specified values, which are obtained on-line in a roll stand model with a roll deflection model. According to the invention, relationships between the rolling force, the deflecting force, and the roll shift, on the one hand, and a corresponding roll gap variation on the other hand are determined on line in the roll deflection model at interpolation points. These relationships are used to calculate at the interpolation points set points for the rolling force, the deflecting force, and the roll shift.

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Hishikawa et al., "New Control Techniques for Cold Rolling Mills--Applications to Aluminum Rolling--", Hitachi Review vol. 39, (1990), No. 4, pp. 221-230.

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