Presetting for cold-roll reversal stand

Details Presetting for cold-roll reversal stand Presetting for cold-roll reversal stand

1997-06-04

1999-11-23

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

723652, B21B 3724

Patent

active

059879483

ABSTRACT:
In a process for presetting the adjusting-member positions of a roll stand upon the rolling of a new coil or for the next pass in each case during cold rolling of bands, adjusting-member positions for the band flatness are used that are based on the corresponding actual data of the first pass of a reference coil, whose reference data results in the best correspondence with the target data of the new coil, or on the actual data of the preceding pass. At the same time, the band thickness can be preset by the specification of a rolling force or adjustment position adapted over a certain time period from the actual data of reference conditions of the roll stand or the rolling mill train.

REFERENCES:
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patent: 5609053 (1997-03-01), Ferreira et al.
patent: 5797288 (1998-08-01), Mas
1979, Ake Nilsson, "Automatic Flatness Control Systemfor Cold Rolling Mil, Iron and Steel Engineer, (Jun. 1979), pp. 55-60.
1984, Dr.-Ing. Bernd Berger et al., "Control of the Tensile Stress Distribution of Strip when Rolling Special Steel in a 20-roll Mill--Design of the Developed Control System", Metallurgical Plant and Technology, (Feb. 1984), p. 72 ff.
1984, Trevor J. Knox et al., "Installation and Operation of Automatic Shape Control on the BSC Llanwern 4-stand Tandem Mill", Iron and Steel Engineer, (Mar. 1984), pp. 31-38.
1986, Klaus Klamma, "Zukunftsorientierte Kaltwalztechnologie", Neue Hutte, (Oct. 1986), pp. 365-370. (English summary).
Jun. 1992, Arthur J. Carlton et al., "Automation of the LTV Steel Hennepin tandem cold mill" Iron and Steel Engineer, vol. 69, No. 6, pp. 20-28.
Jul. 1990/Aug. 1990, A. Serrano et al., "Prereglage automatique pour laminoirs reversibles" Revue de Metallurgie, vol. 87, No. 7/8, pp. 669-679.
Mar. 1998, Communication from the European Patent Office and attached Search Report.

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