EP1819456B2 - Verfahren und walzstrasse zum verbessern des ausfädelns eines metallwalzbandes, dessen walzband-ende mit walzgeschwindigkeit ausläuft - Google Patents

Verfahren und walzstrasse zum verbessern des ausfädelns eines metallwalzbandes, dessen walzband-ende mit walzgeschwindigkeit ausläuft Download PDF

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Publication number
EP1819456B2
EP1819456B2 EP06806568.9A EP06806568A EP1819456B2 EP 1819456 B2 EP1819456 B2 EP 1819456B2 EP 06806568 A EP06806568 A EP 06806568A EP 1819456 B2 EP1819456 B2 EP 1819456B2
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EP
European Patent Office
Prior art keywords
rolling
strip
force
rolled
metal strip
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Active
Application number
EP06806568.9A
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German (de)
English (en)
French (fr)
Other versions
EP1819456B1 (de
EP1819456A1 (de
Inventor
Peter Sudau
Olaf Norman Jepsen
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
SMS Group GmbH
Original Assignee
SMS Group GmbH
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
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Application filed by SMS Group GmbH filed Critical SMS Group GmbH
Publication of EP1819456A1 publication Critical patent/EP1819456A1/de
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Publication of EP1819456B1 publication Critical patent/EP1819456B1/de
Publication of EP1819456B2 publication Critical patent/EP1819456B2/de
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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21B—ROLLING OF METAL
    • B21B37/00—Control devices or methods specially adapted for metal-rolling mills or the work produced thereby
    • B21B37/58—Roll-force control; Roll-gap control
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21B—ROLLING OF METAL
    • B21B37/00—Control devices or methods specially adapted for metal-rolling mills or the work produced thereby
    • B21B37/68—Camber or steering control for strip, sheets or plates, e.g. preventing meandering
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21B—ROLLING OF METAL
    • B21B2273/00—Path parameters
    • B21B2273/04—Lateral deviation, meandering, camber of product
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21B—ROLLING OF METAL
    • B21B2273/00—Path parameters
    • B21B2273/12—End of product
    • B21B2273/14—Front end or leading end
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21B—ROLLING OF METAL
    • B21B37/00—Control devices or methods specially adapted for metal-rolling mills or the work produced thereby
    • B21B37/48—Tension control; Compression control
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21B—ROLLING OF METAL
    • B21B37/00—Control devices or methods specially adapted for metal-rolling mills or the work produced thereby
    • B21B37/58—Roll-force control; Roll-gap control
    • B21B37/62—Roll-force control; Roll-gap control by control of a hydraulic adjusting device
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21B—ROLLING OF METAL
    • B21B37/00—Control devices or methods specially adapted for metal-rolling mills or the work produced thereby
    • B21B37/72—Rear end control; Front end control
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21B—ROLLING OF METAL
    • B21B38/00—Methods or devices for measuring, detecting or monitoring specially adapted for metal-rolling mills, e.g. position detection, inspection of the product
    • B21B38/08—Methods or devices for measuring, detecting or monitoring specially adapted for metal-rolling mills, e.g. position detection, inspection of the product for measuring roll-force

Definitions

  • the invention relates to a method and a rolling line for improving the Ausfädelns a metal strip whose rolling strip end expires at rolling speed from a respectively last yielding mill of a multi-stand rolling mill, wherein during rolling between two successive stands for stabilizing the strip tension is adjusted ,
  • the rolling speed is adjusted so that a required final rolling temperature of the metal strip, in particular steel strip, is achieved.
  • Endwalztemperaturen must be complied with in order to achieve the desired metallurgical properties.
  • a reduction in the rolling speed is undesirable even at the end of the tape. Threading out the metal strip at rolling speed, however, is problematic, especially at high rolling speeds and thin end thicknesses.
  • the strip tension set between the rolling stands is a decisive factor for stabilizing the strip run.
  • the strip tension is reduced shortly before or at the latest with the unthreading from the rolling stand.
  • the rolled strip end is then drawn without tension into the next mill stand.
  • the tape is unstable and minor disturbances or deviations can lead to "bleeding" of the rolled strip end in the nip.
  • the metal strip runs out of the center of the frame, generating differential rolling forces and skewing the roll gap, which in turn accelerates bleeding.
  • causes for this process can be a non-parallel roll gap, temperature differences across the bandwidth, a thickness wedge over the belt width or belt hardness differences.
  • the invention has for its object to consider the unthreading of the rolled strip end at each momentarily resulting last rolling stand of a rolling train as an independent process step and to evaluate the setting of rolling forces on both sides of the rolling stand in a timely manner.
  • the stated object is achieved by a method according to claim 1 and a rolling train according to claim 2.
  • the method provides that, shortly before composing the rolled strip end from a stand, the differential rolling forces generated between the drive side and the operator side are measured separately for each rolling mill, from which the swivel value and pivoting direction of the differential rolling force are derived to form a correction value for the setting of the rolls and the employment is corrected.
  • the advantage is that the initial situation is improved before the threading out and a bleeding of the rolled strip end is largely avoided.
  • the direction and the value of the differential rolling force are determined for this phase and thus a "swivel value" is calculated for the metal strip.
  • the results of the respective measuring step are utilized adaptively from metal roll strip to metal roll strip and the results of the respective measuring step are adaptively utilized from metal roll strip to metal roll strip.
  • One application is that the measurement result for the helmsman in the control center is displayed and the helmsman performs the correction manually during the rolling process.
  • the application according to the invention is achieved by forming an average value of the differential rolling force between the drive side and the operator side after the rolling strip end has been taken out for a selected strip length and utilized in the following metal strip.
  • a rolling mill for hot rolling a metal strip In particular, a thin steel strip is provided with a plurality of rolling mill stands having their work rolls and backup rolls respectively driven on the drive side for maintaining a strip train for stabilizing the strip run and a high rolling speed, and measuring devices for measuring the rolling force on the drive side and the operator side, respectively are provided.
  • the stated object is achieved according to the invention in that the rolling forces on the drive side and on the operator side by force gauges shortly before leaving the rolled strip end are determined as Differenzwalzkraft, wherein an evaluation unit for the differential rolling force of the metal strip end and a computer unit for the calculation of a so-called swivel value for the adjustment of the rolls during the passage of the metal strip end are provided.
  • the advantages here are also those that have already been shown for the process.
  • the force measuring devices for the differential rolling force of the metal strip end consist of load cells, which are each arranged below the lower support roller.
  • the inventive design of the measuring devices is designed to the effect that is connected to the computer unit a branch for the forwarding of the swivel value either to an automatic for consideration in the current or next metal strip and / or a display of a swivel recommendation for the helmsman.
  • the automatic and / or the display is connected to a swivel setpoint comparator and / or a swing-Istwertner and that both are connected to a position control of the hydraulic adjustment on the drive side or to a position control of the hydraulic adjustment on the operator side ,
  • a further embodiment is that the position controls, including a position control for the absolute position setpoint, are each connected to a cylinder force control for the drive side and the operator side.
  • Fig. 1A is a stable strip during rolling of a metal strip 1 is shown, wherein the rolled strip end 1a enters the respective last roll stand 2 a hot strip rolling mill 3.
  • the rolling forces are in each case symmetrical to the middle of the framework 2a (FIG. Fig. 2 ) acting effectively.
  • the adjustment of the rollers 10,11 is not parallel, but on the drive side 4 further open than on the operator side 5.
  • This setting leads by the clamping of the metal strip 1 in the adjacent stands F1 and F3 to an asymmetrical band voltage distribution over the bandwidth whereby the strip is stabilized and prevents the metal strip 1 from running laterally.
  • the tape take-in speeds for the stand F2 on the drive side 4 and the operator side 5 are the same.
  • Fig. 1B is shown an unstable tape during the unthreading of the rolled strip end 1 a, wherein after the threading out of the rolled strip end 1 a from the frame F1 of the stabilizing strip tension is missing and there is different tape feed speeds between the drive side 4 and the operator side 5 of the frame F2.
  • the metal strip 1 is drawn in this case at a higher speed on the drive side 4, so that the rolled strip end 1a rotates and extends to the drive side 4 out.
  • Such a process is dangerous and can lead to the described damage.
  • the generated rolling forces on the drive side 4 and on the operator side 5 are compared or separately measured for each rolling stand F1, F2, F3, Fn ... and then evaluated. The direction and the value of the differential rolling force are calculated from these measured values.
  • the results of the respective measuring step are automatically used within the ongoing rolling process from roll stand (F1) to rolling stand (F2..F3..Fn) or adaptively from metal strip 1 to a new metal strip 1.
  • a recovery application is designed such that the measurement result for the helmsman in the control center is displayed on a monitor and the helmsman makes the correction manually during the rolling process.
  • Another utilization possibility is that after the threading out of the rolled strip end 1a for a selected strip length, an average value of the differential rolling force between the drive sides 4 and the operator sides 5 is formed and utilized for the respectively following metal strip 1.
  • Fig. 2 is a roll stand 2 from the hot strip rolling mill 3 ( Fig. 1 ), the work rolls 10 and back-up rolls 11 each on the drive side 4, wherein the belt tension is set to stabilize the belt run and for a high rolling speed.
  • measuring devices for measuring the rolling force on the driving side 4 and the operator side 5 described below are provided.
  • a branch 19 for the forwarding of the swivel 16 either connected to an automatic 20 for consideration when running or next metal roller 1 and / or a display 21 a swivel recommendation for the helmsman.
  • the helmsman's automatic slew setpoint 23 is routed to a branch 24 in which the values are passed to a hydraulic control / drive side position control (rollers) 25 and to a hydraulic control position control 26 on the operator side 5.
  • the swing setpoints 22 and 23 are added to the absolute position setpoint 27 and subtracted.
  • the position controls 25, 26 of the hydraulic actuators on the drive side 4 and on the operator side 5 operate with these position setpoints and are connected to a cylinder force control 29 and 30 for the drive side 4 and the operator side 5, respectively.
  • Fig. 3 For example, evaluations of the differential force at the rolled strip end 1a are shown. After the threading 31 out of the frame F i-1 , a mean value 32 of the differential force is formed for a specific time or strip length. For the remaining time or length of tape until unthreading 33 from the stand Fi, a relative deviation 34 is then integrated with this mean value. The size of the value thus calculated determines the size of the pan value 16 and the sign the direction of "pan”.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Control Of Metal Rolling (AREA)
  • Metal Rolling (AREA)
  • Laminated Bodies (AREA)
  • Vessels, Lead-In Wires, Accessory Apparatuses For Cathode-Ray Tubes (AREA)
EP06806568.9A 2005-11-18 2006-10-26 Verfahren und walzstrasse zum verbessern des ausfädelns eines metallwalzbandes, dessen walzband-ende mit walzgeschwindigkeit ausläuft Active EP1819456B2 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102005055106A DE102005055106A1 (de) 2005-11-18 2005-11-18 Verfahren und Walzstraße zum Verbessern des Ausfädelns eines Metallwalzbandes, dessen Walzband-Ende mit Walzgeschwindigkeit ausläuft
PCT/EP2006/010342 WO2007057098A1 (de) 2005-11-18 2006-10-26 Verfahren und walzstrasse zum verbessern des ausfädelns eines metallwalzbandes, dessen walzband-ende mit walzgeschwindigkeit ausläuft

Publications (3)

Publication Number Publication Date
EP1819456A1 EP1819456A1 (de) 2007-08-22
EP1819456B1 EP1819456B1 (de) 2008-09-24
EP1819456B2 true EP1819456B2 (de) 2019-11-20

Family

ID=37622237

Family Applications (1)

Application Number Title Priority Date Filing Date
EP06806568.9A Active EP1819456B2 (de) 2005-11-18 2006-10-26 Verfahren und walzstrasse zum verbessern des ausfädelns eines metallwalzbandes, dessen walzband-ende mit walzgeschwindigkeit ausläuft

Country Status (12)

Country Link
US (1) US7854155B2 (ru)
EP (1) EP1819456B2 (ru)
JP (1) JP2008516781A (ru)
CN (1) CN101151109B (ru)
AT (1) ATE409085T1 (ru)
BR (1) BRPI0605905A8 (ru)
CA (1) CA2594870C (ru)
DE (2) DE102005055106A1 (ru)
ES (1) ES2310917T5 (ru)
RU (1) RU2344891C1 (ru)
UA (1) UA88332C2 (ru)
WO (1) WO2007057098A1 (ru)

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EP2014380A1 (fr) * 2007-06-11 2009-01-14 ArcelorMittal France Procédé de laminage d'une bande métallique avec régulation de sa position latérale d'une bande et laminoir adapté
EP2527056A1 (de) * 2011-05-24 2012-11-28 Siemens Aktiengesellschaft Verfahren zum Walzen von Platten, Computerprogramm, Datenträger und Steuereinrichtung
RU2492005C1 (ru) * 2012-03-30 2013-09-10 Федеральное государственное бюджетное образовательное учреждение высшего профессионального образования "Липецкий государственный технический университет" (ЛГТУ) Способ горячей прокатки полос
CN102794311A (zh) * 2012-07-24 2012-11-28 江苏永钢集团有限公司 一种钢坯自动碎断控制装置
DE102014215396A1 (de) 2014-08-05 2016-02-11 Primetals Technologies Germany Gmbh Differenzzugregelung mit optimierter Reglerauslegung
IT201700035735A1 (it) * 2017-03-31 2018-10-01 Marcegaglia Carbon Steel S P A Apparato di valutazione di proprietà meccaniche e microstrutturali di un materiale metallico, in particolare un acciaio, e relativo metodo
CN108838215B (zh) * 2018-06-29 2020-09-18 首钢京唐钢铁联合有限责任公司 一种轧机的倾斜调整方法及装置
CN117832380B (zh) * 2024-03-05 2024-05-07 东莞市宝红精密技术有限公司 一种极片生产方法和极片轧制测试校正装置

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Also Published As

Publication number Publication date
CN101151109A (zh) 2008-03-26
BRPI0605905A8 (pt) 2016-05-03
UA88332C2 (ru) 2009-10-12
US7854155B2 (en) 2010-12-21
US20080302158A1 (en) 2008-12-11
ES2310917T5 (es) 2020-09-15
EP1819456B1 (de) 2008-09-24
DE102005055106A1 (de) 2007-05-24
CA2594870A1 (en) 2007-05-24
ES2310917T3 (es) 2009-01-16
EP1819456A1 (de) 2007-08-22
ATE409085T1 (de) 2008-10-15
WO2007057098A1 (de) 2007-05-24
BRPI0605905A (pt) 2007-12-18
DE502006001631D1 (de) 2008-11-06
JP2008516781A (ja) 2008-05-22
RU2344891C1 (ru) 2009-01-27
RU2007114728A (ru) 2008-10-27
CN101151109B (zh) 2012-09-12
CA2594870C (en) 2010-09-21

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