Method for rolling a plate and rolling mill both using roll shif

Details Method for rolling a plate and rolling mill both using roll shif Method for rolling a plate and rolling mill both using roll shif

1995-06-22

1997-08-12

Larson, Lowell A.

Metal deforming

By use of roller or roller-like tool-element

With carrier for roller-couple or tool-couple

72247, 722418, B21B 3107, B21B 3132, B21B 1314

Patent

active

056553978

ABSTRACT:
The rolling mill includes upper and lower work rolls, a roll bending apparatus for applying a bending force to the upper and lower work rolls, a roll shifter for axially shifting the upper and lower work rolls in opposite directions, and a back-up roll for supporting the upper and lower work rolls. The upper and lower work rolls have a bus having a contour comprising first to fifth regions. The rolling mill is adapted to have the large changability of plate crown effected by the roll shifting on plates with narrow or intermediate widths. The use of a combination of roll shifting and roll bending causes contours of the upper and lower work rolls to overlap deflection of the upper and lower work rolls, resulting in that a smooth roll diameter profile across the width of the plate to be rolled where the upper and lower work rolls contact the plate. Thus, it is possible to minimize the difference in a roll diameter, and to enhance the plate crown controllability, even for a plate having an intermediate or narrow width.

REFERENCES:
patent: 4881396 (1989-11-01), Seidel et al.
patent: 4898014 (1990-02-01), Ginzburg et al.

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