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公开(公告)号：US10780474B2
公开(公告)日：2020-09-22
申请号：US16091635
申请日：2017-02-27
发明人： Ansgar Grüss , Daniel Kotzian , Andreas Maierhofer
摘要： A metal band is first rolled in a front and then in a rear (downstream) roll stand of a multi-stand rolling train. A looper between the roll stands may detect a band tension in the metal band. The band tension is supplied to a first and a second tension controller to determine an application additional target value and a speed additional target value. The second tension controller may only determine a value less than or greater than 0, as the speed additional target value, if the band tension is above or below an upper or lower band tension limit. Otherwise, the speed additional target value may be 0. The first tension controller is also supplied with a target tension that falls between the band tension limits. The application additional target value may be used to act on the rear roll stand.
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公开(公告)号：US11318511B2
公开(公告)日：2022-05-03
申请号：US16783242
申请日：2020-02-06
发明人： Daniel Kotzian , Wilfried Tautz
摘要： Before the rolling of a metal strip on a finishing train, the actual width and actual temperature of portions of the metal strip are respectively detected. The portions of the metal strip are tracked while they run through the finishing train. The rolling stands are respectively assigned width controlling devices which determine the setpoint width and the actual width after the rolling in the assigned rolling stand, and a downstream additional setpoint value, by which the desired tension downstream of the assigned rolling stand is corrected in order to bring the actual width closer to the setpoint width. The downstream additional setpoint value is both taken into account in the determination of the actual width and fed to a tension controller, which sets an actual tension, in the metal strip downstream of the assigned rolling stand, in accordance with the corrected setpoint tension. Determining the downstream additional setpoint value by the difference between the setpoint width and the actual width of a portion of the metal strip.
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公开(公告)号：US10596608B2
公开(公告)日：2020-03-24
申请号：US15511693
申请日：2015-08-26
发明人： Daniel Kotzian , Wilfried Tautz
摘要： Before the rolling of a metal strip on a finishing train, the actual width and actual temperature of portions of the metal strip are respectively detected. The portions of the metal strip are tracked while they run through the finishing train. The rolling stands are respectively assigned width controlling devices which determine the setpoint width and the actual width after the rolling in the assigned rolling stand, and a downstream additional setpoint value, by which the desired tension downstream of the assigned rolling stand is corrected in order to bring the actual width closer to the setpoint width. The downstream additional setpoint value is both taken into account in the determination of the actual width and fed to a tension controller, which sets an actual tension, in the metal strip downstream of the assigned rolling stand, in accordance with the corrected setpoint tension. Determining the downstream additional setpoint value by the difference between the setpoint width and the actual width of a portion of the metal strip.
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公开(公告)号：US11858021B2
公开(公告)日：2024-01-02
申请号：US17598343
申请日：2020-03-05
发明人： Martin Kerschensteiner , Daniel Kotzian , Matthias Kurz , Klaus Loehe , Andreas Maierhofer , Daniel Ott , Mirko Tunk
CPC分类号： B21B37/68 , B21B37/30 , B21B37/58 , B21B38/02 , B21B2263/04
摘要： A control device (3b) for a roll stand (1). During rolling of a metal strip (2) in the roll stand (1), the device receives measurement data (M) for a lateral position (y) of the metal strip (2) on the inlet side and/or outlet side of the roll stand (1). Taking into account parameters (P) of the stand regulator (3a) on the basis of the deviation in the lateral position (y) from a target position (y*), a stand regulator (3a) of the control device (3b) determines a tilt value (δs) for the roll stand (1) and controls the roll stand (1) accordingly. The control device (3b) determines at least one variable (V1, V2, Q1, Q2) from which it is derived, for both strip edges (7, 8) of the metal strip (2), whether the metal strip (2) forms an undulation (9) in the region of the particular strip edge (7, 8). As soon as the metal strip (2) forms an undulation (9) in the region of one of the strip edges (7, 8), the control device (3b) varies at least one of the parameters (P) of the stand regulator (3a), such that the stand regulator (3a) determines the tilt value (δs), starting from the variation in the at least one parameter (P), and taking into account the changed parameter (P).
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公开(公告)号：US20220097112A1
公开(公告)日：2022-03-31
申请号：US17485590
申请日：2021-09-27
发明人： Matthias Dressler , Daniel Kotzian
IPC分类号： B21B37/58
摘要： A metal strip is fed to a rolling stand by a feeding device and removed by a removing device. A control device cyclically determines, based on final thickness deviations of portions of the metal strip from a setpoint thickness of the metal strip on the exit side, setpoint values and outputs the determined setpoint values to final control elements. The final control elements include the feeding device, an adjusting device for the rolling gap of the rolling stand, a drive for driving rolls of the rolling stand, and/or the removing device. For the feeding device, the drive, and the removing device, the setpoint value is a setpoint speed or torque. For the adjusting device, the setpoint value is a setpoint rolling-gap value. The control device determines a setpoint value based on a number of final thickness deviations allowing for the inverse frequency response of the respective final control element.
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