Usinor

Arcelormittal France

Arcelor France

Dominique Kircher

Jacques-Yves Bourgon

Fabrice Tondo

Olivier Madelaine-Dupuich

Gilbert Petig

Alain Fouratier

Christian Hoff

Philippe Wallendorf

Stéphane Rossi

Eric Vasseur

Stephane Rossi

A tensionless leveller for levelling a metal strip and having an entry and an exit includes n+1 motorized rolls each having a constant radius R. The leveller also includes a lower superposed cassette supporting at least n/2 of the rolls and an upper superposed cassette supporting at least n/2 of the rolls not supported by the lower superposed cassette. The rolls are offset with respect to one another and are placed alternately above and below a path of the strip. An axis of each of the rolls of the lower cassette is separated from an axis of an immediately successive roll of the upper cassette by a center-to-center spacing E, in which: for k from 2 to 4, R/E=R/E; for k from n&#x2212;3 to n, R/E=R/Eand R/E&#x3c;R/E; and for k from 5 to n&#x2212;1, R/E&#x2266;R/E&#x2266;R/E, and R/E&#x2267;R/E.

Roller leveller with variable center distance

A device for calibrating a multi-roll leveler for leveling a metal strip includes an assembly having two series of rolls, namely upper rolls and lower rolls which face each other so as to imbricate the rolls of one series into those of the other. The series of rolls are placed substantially parallel to each other and perpendicular to the run direction of the strip to be leveled. A rigid measurement bar of sufficient length is positioned in the leveling direction between the upper and lower rolls, extending over all the rolls, and having rigid protrusions integral with the bar reproducing, when they are placed plumb with the lower rolls, the action of the lower rolls and their mechanical properties. A thin metal plate rests on these protrusions and is fastened to one of them at around the middle of the bar and includes extensometers for measuring its elastic deformations.

Device and method for calibrating a planishing roller device by means of an instrumented bar

Growing community of inventors

Talange, France

Dominique Kircher