公开(公告)号：US20230356278A1

公开(公告)日：2023-11-09

申请号：US18246086

申请日：2021-09-09

Applicant: SMS GROUP GMBH

Inventor： Michael ZIELENBACH ,  Olaf Norman JEPSEN

IPC: B21B37/62 ,  B21B1/22

CPC classification number: B21B37/62 ,  B21B1/22

Abstract: A device and a method for rolling a metal strip. A distance of the upper/lower backup roll at at least one point thereof from a predetermined upper/lower reference point is measured by an upper/lower sensor and the measured values of the sensors are sent to a control device. A strain of the roll stand is calculated using a mathematical model, taking into account the rolling force generated. By the control device, an absolute value of the roll gap and thus the resulting thickness of the rolling stock is determined by the control device on the basis of the measured positions of the backup rolls and the calculated strain of the roll stand.

公开(公告)号：US20220082115A1

公开(公告)日：2022-03-17

申请号：US17425315

申请日：2020-01-23

Applicant: SMS group GmbH

Inventor： Michael ZIELENBACH ,  Jörn SOHLER ,  Peter HORN ,  Martin SCHMIDT

IPC: F15B11/10 ,  F15B21/08 ,  G05B19/042 ,  B21B35/00

Abstract: A hydraulic control loop controls a hydraulic adjusting cylinder. The cylinder has a cylindrical housing and a displaceable piston therein. The piston divides the housing interior into a first and a second hydraulic chamber. A first hydraulic valve supplies the first hydraulic chamber with hydraulic fluid. A hydraulic pressure of the first hydraulic chamber is adjustable by controlling the first hydraulic valve. A second hydraulic valve supplies the second hydraulic chamber with hydraulic fluid. A hydraulic pressure of the second hydraulic chamber is adjustable by controlling the second hydraulic valve. A control device controls the two hydraulic valves. In a position control state, the second hydraulic valve is controlled by a position control signal dependent on the working position of the piston and the first hydraulic valve is controlled by an adjusted position control signal, that is generated on the basis of the position control signal.

公开(公告)号：US20190062887A1

公开(公告)日：2019-02-28

申请号：US16079486

申请日：2017-01-13

Applicant: SMS GROUP GMBH

Inventor： Lutz KÜMMEL ,  Thomas DAUBE ,  Holger BEHRENS ,  Dominique FONTAINE ,  Michael ZIELENBACH

IPC: C23C2/00 ,  B65H23/038

Abstract: A method for operating a coating device for coating a metal strip. The corresponding coating device has an electromagnetic strip-stabilizing device having a plurality of electromagnetic actuators or coils for applying forces to the metal strip. In order to ensure that the strip-stabilizing device is operated only within the operating limits thereof, the magnitudes of the set currents for the actuators or the coils are compared with a specified current threshold value or the forces applied to the metal strip by the actuators are compared with a specified force threshold value and the correction roller is moved into such an adjustment position that the magnitudes of the set currents are below the current threshold value or the magnitudes of the forces are below the force threshold value.