EP1121990A2 - Dispositif pour le laminage de bandes d'épaisseur variable périodiquement - Google Patents

Dispositif pour le laminage de bandes d'épaisseur variable périodiquement Download PDF

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Publication number
EP1121990A2
EP1121990A2 EP01102289A EP01102289A EP1121990A2 EP 1121990 A2 EP1121990 A2 EP 1121990A2 EP 01102289 A EP01102289 A EP 01102289A EP 01102289 A EP01102289 A EP 01102289A EP 1121990 A2 EP1121990 A2 EP 1121990A2
Authority
EP
European Patent Office
Prior art keywords
strip
reel
roll
thickness
roll gap
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.)
Granted
Application number
EP01102289A
Other languages
German (de)
English (en)
Other versions
EP1121990B2 (fr
EP1121990B1 (fr
EP1121990A3 (fr
Inventor
Jürgen Dr.-Ing. Klöckner
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.)
Josef Frohling GmbH
Original Assignee
Josef Frohling 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 Josef Frohling GmbH filed Critical Josef Frohling GmbH
Publication of EP1121990A2 publication Critical patent/EP1121990A2/fr
Publication of EP1121990A3 publication Critical patent/EP1121990A3/fr
Application granted granted Critical
Publication of EP1121990B1 publication Critical patent/EP1121990B1/fr
Publication of EP1121990B2 publication Critical patent/EP1121990B2/fr
Anticipated expiration legal-status Critical
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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
    • B21B37/16—Control of thickness, width, diameter or other transverse dimensions
    • B21B37/24—Automatic variation of thickness according to a predetermined program
    • B21B37/26—Automatic variation of thickness according to a predetermined program for obtaining one strip having successive lengths of different constant thickness
    • 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
    • B21B37/28—Control of flatness or profile during rolling of strip, sheets or plates
    • 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
    • B21B37/28—Control of flatness or profile during rolling of strip, sheets or plates
    • B21B37/38—Control of flatness or profile during rolling of strip, sheets or plates using roll bending
    • 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
    • B21B37/52—Tension control; Compression control by drive motor control
    • B21B37/54—Tension control; Compression control by drive motor control including coiler drive control, e.g. reversing mills
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21B—ROLLING OF METAL
    • B21B39/00—Arrangements for moving, supporting, or positioning work, or controlling its movement, combined with or arranged in, or specially adapted for use in connection with, metal-rolling mills
    • B21B39/02—Feeding or supporting work; Braking or tensioning arrangements, e.g. threading arrangements
    • B21B39/08—Braking or tensioning arrangements

Definitions

  • the present invention relates to the rolling of strips, by means of a roll stand with a set of rollers for limitation of the roll gap and an adjustment system for determination the width of the roll gap.
  • a decoiler Located in front of the rolling stand there is a decoiler, a decoiler is the roll stand subordinate.
  • the strip material to be reduced in thickness is unwound from the decoiler under tension, passed through the nip between the rolls of the roll set and again under tension on the take-up reel wound up.
  • the aim is to be as uniform as possible Thickness of the strip-like rolling stock after leaving the Roll gap, as is naturally the case on the decoiler strip-shaped starting rolling stock in the form of a coil the same possible thickness over the entire length Length.
  • strip-shaped rolling stock has a starting thickness that is as constant as possible and have a constant, smaller final thickness as possible. Should, for example in body construction, sheet metal in various Areas have different thicknesses, so are metal strips different thicknesses welded together.
  • Sheet metal strips have already been rolled in the laboratory Longitudinal direction of the belt successive belt sections of different thicknesses. One-off sections follow different sections Thicknesses on each other, it can be relatively easy by changing the width of the roll gap.
  • stripe sections should be different Thicknesses follow one another, so only a relatively small one Belt speed a smooth transition between the individual band sections of different thicknesses guaranteed become.
  • the possible tape running speed is too low to the laboratory operation in the area of industrial mass production to take over.
  • the problems with the production of tapes periodically consecutive band sections different Strip thicknesses are due to the fact that when changing the degree of rolling, the belt speeds on Change the entrance and exit of the roll gap and advance and backing up the tape relative to the peripheral speed of the Change work rolls with the stitch change. That’s why the speed of the reel drives is constantly changing Process conditions are adjusted. For this are speed changes up to 50% of the nominal speed in short time (e.g. 0.15 seconds) is required. This leads to the previously known cold rolling mills for violent fluctuations in strip tension. This results in an irregular structure of what is to be wound up Coils, impermissible deviations in the final roll thickness of their setpoint, risk of belt breaks and damage to system parts.
  • a rolling mill becomes more relevant State of the art provided that there is a decoiler on the inlet side in front of a roll stand and preferably also pulleys, Has tape tension measuring devices and tape thickness measuring devices as well a reel on the outlet side according to the roll stand mentioned and preferably again deflection rollers, tape tension measuring devices and has tape thickness gauges. It is marked Invention above all through a balancing or dancer role on the inlet side and another dancer roll on the outlet side.
  • the roll stand (main drive) is speed-controlled on the desired speed set. In stationary Rolling operation, the rollers rotate with practically constant Peripheral speed.
  • the dancer roles are force-controlled with the task, the desired one Apply tape tension.
  • the reel is speed controlled, with the target speed taking into account the respective coil diameter the average of the belt speed is set.
  • the positions of the dancer rolls are monitored and control signals for correcting the reel speeds are derived, for example as follows: If the dancer roll on the inlet side drops too low below the lower switching point, the uncoiling is delayed accordingly. If this dancer roll rises too far above the upper switching point, the uncoiling is accelerated. If the dancer roll on the outlet side sinks too far, the reel must travel a little faster and vice versa.
  • the belt pulls on the inlet and outlet sides of the roll stand are practically constant (within narrow tolerances).
  • the tape thickness can be varied relatively arbitrarily, without risking tape breaks and damage to the system.
  • FIG. 2 A rolling mill with a compensating roller according to the invention or dancer roll on the inlet and outlet side of a Roll stand is shown in Fig. 2 and described below. It is understood that this is only a Embodiment of the invention is.
  • a roll stand 1 is arranged in the center of the rolling mill, in the two work rolls 2, 3 determine the width of the roll gap, through which the band-shaped rolling material 4 is forcibly passed is to the actual thickness of the rolling material 4 before Roll stand 1 to the smaller target thickness after the roll stand 1 to reduce. Otherwise, the structure of the roll stand corresponds 1 the state of the art, so that further representation and Description is dispensed with and only two backup rollers or rollers 5, 6 and a device 7 are shown, with the device 7, the rollers perpendicular to the metal strip are adjustable to determine the width of the roll gap or to be able to change.
  • the input thickness of the tape 4 before the roll stand 1 is assumed to be constant, as is the section 8 shows the line in the diagram according to FIG.
  • the thickness of the strip material should be reduced to a target value as determined by the Section 9 of the line in the diagram shown in FIG. 1 is.
  • This target thickness of the strip material should now differ not constant from the state of the art, but rather be different, the change in target thickness periodically should repeat itself at a relatively high level Belt running speed (partial figure 1a).
  • the roll stand 1 is speed-controlled and set to the desired target speed
  • the dancer rolls 12, 13 are force-controlled to achieve the desired To apply the tape tension
  • the reels 10 and 11 are speed-controlled, taking into account the target speed of the respective coil diameter to the mean value of the belt speed is set, i.e. that from the uncoiler 10 as much tape 4 is unwound as the rolling stand 1 moves in and that so much tape 4 is wound up from the reel 11, as the mill stand 1 releases on the outlet side.
  • the dancer roles 12, 13 are adjustable up and down like it is expressed by the double arrows 14, 15. To the functions reference is made in detail to what has been said above.
  • the rolling force corresponding to the periodic or cyclical variable changes in thickness of the strip material periodically or fluctuates cyclically.
  • This can lead to in the strip material in its central region in the longitudinal direction of the strip form successive waves when the thickness decrease of the rolled strip is relatively small, and that form such waves in the edge areas of the rolled strip, if the reduction in thickness of the rolled strip is relatively large.
  • the Problem of this edge or medium wave training is manageable, if periodic changes in thickness in relative large intervals are made and the adjustments to the need the edge wave suppression or elimination and Medium wave suppression or elimination only at large intervals exists, be it because of the spatial, or because of the time intervals between two successive changes in thickness are correspondingly large, or, in other words, Flatness control systems only on relatively long-wave Process changes have to react.
  • the present invention shows in her further training how the described Problem can be solved if the distance between two each of periodically recurring changes in thickness short and in particular shorter than the distance between the Roll stand and a flatness measuring system is.
  • the problem is illustrated in FIG. 3.
  • the mill stand 1 follows a thickness measurement on the rolled strip 4 in the thick area n + 1, in Distance 18 from the mill stand, while in the direction of Roll strip feed preceding thick strip area n at a distance 19 from the roll stand 12 by means of a flatness measuring system 16 the flatness of the rolled strip is determined.
  • the next thick area has n + 1 already leave the mill stand 1, a consideration is no longer possible for the range n + 1, but only for later thick strip sections from n + 2, for the a new appointment has been made. This condition should be removed and corrections to maintain optimal flatness can be taken into account for the rolling of the section n + 1.
  • Determining the deviation of the actual value from the target value and a new setpoint is already calculated for the next strip section to be rolled.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Control Of Metal Rolling (AREA)
  • Controlling Rewinding, Feeding, Winding, Or Abnormalities Of Webs (AREA)
  • Winding, Rewinding, Material Storage Devices (AREA)
  • Metal Rolling (AREA)
EP01102289A 2000-02-02 2001-02-01 Dispositif pour le laminage de bandes d'épaisseur variable périodiquement Expired - Lifetime EP1121990B2 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE10004532 2000-02-02
DE10004532A DE10004532A1 (de) 2000-02-02 2000-02-02 Vorrichtung zum Walzen von Bändern mit periodisch veränderlicher Bandenddicke

Publications (4)

Publication Number Publication Date
EP1121990A2 true EP1121990A2 (fr) 2001-08-08
EP1121990A3 EP1121990A3 (fr) 2004-01-14
EP1121990B1 EP1121990B1 (fr) 2006-05-24
EP1121990B2 EP1121990B2 (fr) 2012-02-29

Family

ID=7629574

Family Applications (1)

Application Number Title Priority Date Filing Date
EP01102289A Expired - Lifetime EP1121990B2 (fr) 2000-02-02 2001-02-01 Dispositif pour le laminage de bandes d'épaisseur variable périodiquement

Country Status (3)

Country Link
EP (1) EP1121990B2 (fr)
AT (1) ATE327058T1 (fr)
DE (2) DE10004532A1 (fr)

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10310399A1 (de) * 2003-03-07 2004-09-23 Sundwig Gmbh Vorrichtung und Verfahren zum Walzen von Metallbändern
WO2007104616A1 (fr) * 2006-03-15 2007-09-20 Siemens Aktiengesellschaft Procédé de laminage pour un matériau laminé permettant la réalisation d'un niveau dans le matériau laminé
EP1908534A1 (fr) * 2006-10-07 2008-04-09 ACHENBACH BUSCHHÜTTEN GmbH Laminoir et procédé de laminage flexible à froid ou à chaud à voie unique ou inverse d'une bande de métal
CN106670242A (zh) * 2017-02-09 2017-05-17 广西南南铝加工有限公司 在线控制离线带材板形的装置
US20170239700A1 (en) * 2016-02-23 2017-08-24 Bilstein Gmbh & Co. Kg Method of and apparatus for rolling strip of fluctuating thickness
DE102019215265A1 (de) 2018-12-06 2020-06-10 Sms Group Gmbh Verfahren zum Betreiben eines Walzgerüstes zum Stufenwalzen
DE102008035738B4 (de) 2007-07-31 2020-06-18 Danieli Germany GmbH Walzvorrichtung
CN114074121A (zh) * 2021-11-18 2022-02-22 东北大学 一种变厚度板带材等速度轧制的速度补偿方法

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10315357B4 (de) * 2003-04-03 2005-05-25 Muhr Und Bender Kg Verfahren zum Walzen und Walzanlage zum Walzen von Metallband
DE102005031461A1 (de) * 2005-07-04 2007-01-11 Bilstein Gmbh & Co. Kg Verfahren zur Herstellung eines mikrolegierten Kaltbandes mit einem auf den Dickenverlauf abgestimmten Eigenschaftsprofil
CN105772512B (zh) * 2014-12-23 2018-04-27 宝山钢铁股份有限公司 变厚度板成卷轧制时张力稳定方法
ES2945411T3 (es) 2018-08-15 2023-07-03 Muhr & Bender Kg Dispositivo, instalación de laminación y procedimiento para la regulación de una tensión frontal durante el laminado flexible de una banda metálica

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
BE556915A (fr) * 1956-04-23
JPH1034204A (ja) * 1996-07-29 1998-02-10 Kawasaki Steel Corp 可逆圧延機における張力制御装置
DE19818207C2 (de) * 1998-04-23 2000-05-31 Schloemann Siemag Ag Steckel-Warmwalzwerk

Cited By (17)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10310399A1 (de) * 2003-03-07 2004-09-23 Sundwig Gmbh Vorrichtung und Verfahren zum Walzen von Metallbändern
DE10310399B4 (de) * 2003-03-07 2005-03-03 Sundwig Gmbh Vorrichtung und Verfahren zum Walzen von Metallbändern
WO2007104616A1 (fr) * 2006-03-15 2007-09-20 Siemens Aktiengesellschaft Procédé de laminage pour un matériau laminé permettant la réalisation d'un niveau dans le matériau laminé
CN101400457B (zh) * 2006-03-15 2011-08-03 西门子公司 轧件的用于将台阶加入轧件中的轧制方法
US8356504B2 (en) 2006-03-15 2013-01-22 Siemens Aktiengesellschaft Rolling method for a rolled product for introducing a step into the rolled product
EP1908534A1 (fr) * 2006-10-07 2008-04-09 ACHENBACH BUSCHHÜTTEN GmbH Laminoir et procédé de laminage flexible à froid ou à chaud à voie unique ou inverse d'une bande de métal
DE102008035738B4 (de) 2007-07-31 2020-06-18 Danieli Germany GmbH Walzvorrichtung
US20170239700A1 (en) * 2016-02-23 2017-08-24 Bilstein Gmbh & Co. Kg Method of and apparatus for rolling strip of fluctuating thickness
US10413949B2 (en) * 2016-02-23 2019-09-17 Bilstein Gmbh & Co. Kg Method of and apparatus for rolling strip of fluctuating thickness
CN106670242B (zh) * 2017-02-09 2018-05-04 广西南南铝加工有限公司 在线控制离线带材板形的装置
CN106670242A (zh) * 2017-02-09 2017-05-17 广西南南铝加工有限公司 在线控制离线带材板形的装置
DE102019215265A1 (de) 2018-12-06 2020-06-10 Sms Group Gmbh Verfahren zum Betreiben eines Walzgerüstes zum Stufenwalzen
WO2020114976A1 (fr) 2018-12-06 2020-06-11 Sms Group Gmbh Procédé servant à faire fonctionner une cage de laminoir de laminage à gradins
CN113226580A (zh) * 2018-12-06 2021-08-06 Sms集团有限公司 用于操纵用来阶梯式轧制的轧机机架的方法
JP2022510024A (ja) * 2018-12-06 2022-01-25 エス・エム・エス・グループ・ゲゼルシャフト・ミト・ベシュレンクテル・ハフツング 段階的圧延のための圧延スタンドの作動のための方法
CN113226580B (zh) * 2018-12-06 2024-03-19 Sms集团有限公司 用于操纵用来阶梯式轧制的轧机机架的方法
CN114074121A (zh) * 2021-11-18 2022-02-22 东北大学 一种变厚度板带材等速度轧制的速度补偿方法

Also Published As

Publication number Publication date
ATE327058T1 (de) 2006-06-15
EP1121990B2 (fr) 2012-02-29
DE10004532A1 (de) 2001-08-30
EP1121990B1 (fr) 2006-05-24
DE50109838D1 (de) 2006-06-29
EP1121990A3 (fr) 2004-01-14

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