Process for rolling flat material and strip

Details Process for rolling flat material and strip Process for rolling flat material and strip

1998-07-08

1999-05-25

Hall, III, Joseph J.

Metal deforming

By use of roller or roller-like tool-element

With carrier for roller-couple or tool-couple

72237, 723652, B21B 2900

Patent

active

059061294

ABSTRACT:
The present invention relates to a process for rolling a roll material through a roll stand having work rolls and support rolls and having devices for balancing and positively and negatively bending the work rolls mounted in chucks of the work rolls. The process includes setting a balancing force by moving the work rolls against the support rolls without clearance when the roll gap is open by using the piston-cylinder units for positive and negative roll bending, setting the pressure in the piston-cylinder units for negative bending so as to attain the roll gap correction needed under load to control the profile and flatness of the roll train and setting the pressure in the piston-cylinder units for balancing and positive bending higher than the amount of balancing force needed. The piston-cylinder units are controlled for exerting a roll force including the positive bending force and the negative bending force on the work rolls when the roll material is inserted in the roll gap and expands the roll gap to a desired size. The piston-cylinder units are also controlled for exerting the balancing force on the work rolls after the end of the roll material exits the roll gap.

REFERENCES:
patent: 4773246 (1988-09-01), Perret
patent: 5638716 (1997-06-01), Jonen
patent: 5752404 (1998-05-01), White et al.

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