Muhr Und Bender Kg

Andre Feldmann

Alexander Eick

Harald Eichner

Stephan Pritz

Christian Brüser

Martin Böhmer

Andre Sondermann

Richard Mundhenke

An apparatus for controlling a strip tension during flexible rolling of metal strip comprises a roll arrangement with at least one dancer roll, the position of said dancer roll being adjustable for controlling the strip tension of the metal strip,

Controlling a strip tension during the flexible rolling of metal strip

A method for dynamic roll gap control for flexible rolling of metallic strip material can include: defining a nominal thickness profile with defined nominal corner points and with profile sections lying in between, wherein two profile sections adjoining a nominal corner point each have different average gradients; flexible rolling of the strip material according to the nominal thickness profile; measuring an actual thickness profile of the flexibly rolled strip material; determining actual corner points corresponding to the nominal corner points and actual intermediate points corresponding to the nominal intermediate points; determining corner point comparison values from the nominal corner points and the corresponding actual corner points, as well as intermediate point comparison values from the nominal intermediate points with the corresponding actual intermediate points; controlling a roll gap depending on the corner point comparison values and the intermediate point comparison values.

Dynamic roll gap control during flexible rolling of metal strips

A roll stand with at least one working roll for rolling strip material and with a hydraulic arrangement for controlling a roll gap of the roll stand, comprises at least one hydraulic adjustment unit for adjusting the roll gap, the hydraulic adjustment unit comprising a cylinder and an adjusting piston dividing the cylinder into a first chamber and a second chamber; a first double-acting valve arrangement and a second double-acting valve arrangement which are each connected to the first chamber and the second chamber for variable control of the adjusting unit, wherein the second double-acting valve arrangement is connected in parallel with the first valve arrangement and has a larger nominal volume flow than the latter; and wherein the adjusting unit can be pressurized with an working pressure of more than 200 bar.

Hydraulic control of a roll gap for a roll stand

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Olpe, Germany

Andre Feldmann