Metal deforming – With use of control means energized in response to activator... – Metal deforming by use of roller or roller-like tool element
Patent
1988-07-11
1990-03-20
Crane, Daniel C.
Metal deforming
With use of control means energized in response to activator...
Metal deforming by use of roller or roller-like tool element
72 12, 72 16, 72205, B21B 3702
Patent
active
049090550
ABSTRACT:
The invention is directed to a system for controlling the gauge and width dimensions of elongated steel strips processed in the finishing stage of a hot rolling mill. Loopers located between adjacent mill stands in the finishing stage apply tension to the strips such that the tension causes plastic deformation of the strip. By providing a dynamic adjustment of the tension responsive to gauge and width sensing devices, the amount of permanent deformation in the plastic region is controlled. By controlling the amount of permanent deformation of a strip in the plastic region, the adjustable tension of the loopers effectively reduces variation of both gauge and width to an extent previously not possible. Preferably, corrections to width variation are carried out by the most upstream loopers. Corrections of gauge variations are carried out by downstream loopers and preferably by the last looper in the finishing stage.
REFERENCES:
patent: 3170344 (1965-02-01), Marrs
patent: 3248916 (1966-05-01), Kenyon
patent: 3427848 (1969-02-01), Gay
patent: 4299103 (1981-11-01), Marten
patent: 4528830 (1985-07-01), Masui et al.
patent: 4557126 (1985-12-01), Niino et al.
David T. Blazevic, "Gage Control-A New Analysis for Hot Strip Mills," Prepared for Association of Iron & Steel Engineers, Sep. 1986.
David T. Blazevic, "Information and Data on Patent Application for Dual Tension Looper Operation," prepared for Edward M. Sikina, Rouge Steel Co., Nov., 1986.
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