Thyssenkrupp Stahl Ag

Bfi-vdeh-institut Fur Angewandte Forschung Gmbh

Bfi Vdeh-institute Fur Angewandte Forschung Gmbh

Andreas Wolff

Gerd Thiemann

Ulrich Muller

Michael Degner

Ullrich Muller

Mohieddine Jelali

The invention relates to a method and a device for the positionally correct winding up of a metal strip in a coiling device, the hot strip being fed to the coiling device by a driving device with driving rollers, the driving rollers being tiltable in relation to one another by a controller by means of actuators for changing the gap between the driving rollers, and the controller being fed the position of the edge of the hot strip upstream of the driving device as a measured variable and as a setpoint reference variable, an optimization of the winding result of the rolled strip coil being achieved by the surface geometry of the rolled strip being determined as a measured variable and fed to the controller.

Method and device for reeling up in the proper position a hot-rolled strip in a reeling installation

Method of measuring and/or controlling flatness during rolling. The flatness deviation is measured and expressed using orthogonal polynomials. A controlled variable is generated using an Internal Mode Control by comparing the expressed deviation with values of orthogonal polynomials supplied by a model. The comparison provides a control difference to control variables that influence bending, pivoting and axial displacement of the rolls and by multizone cooling.

Multi variable flatness control system

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Dusseldorf, Germany

Andreas Wolff