EP1121990A2 - Vorrichtung zum Walzen von Bändern mit periodisch veränderlicher Banddicke - Google Patents
Vorrichtung zum Walzen von Bändern mit periodisch veränderlicher Banddicke Download PDFInfo
- 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
Links
Images
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 programme
- B21B37/26—Automatic variation of thickness according to a predetermined programme 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)
Abstract
Description
- Fig. 1
- ein Diagramm zur Erläuterung von in Bandlängsrichtung aufeinanderfolgenden Bandabschnitten verschiedener Dicke,
- Fig. 1a
- einen größeren Bandlängsschnitt in kleinerer Darstellung,
- Fig. 2
- in diagrammartiger Darstellung eine erfindungsgemäße Anlage bezw. Vorrichtung,
- Fig. 3
- eine Darstellung zur Erläuterung des Problems, das mit der Erfindung in einer weiteren Ausgestaltung gelöst wird und
- Fig. 4
- eine weitere Erläuterung zu der weiteren Ausgestaltung der Erfindung.
sinkt die einlaufseitige Tänzerrolle zu tief unter den unteren Schaltpunkt ab, wird die Abhaspel entsprechend verzögert.
Steigt diese Tänzerrolle zu weit über den oberen Schaltpunkt auf, wird die Abhaspel beschleunigt.
Bei zu weit absinkender auslaufseitiger Tänzerrolle muß die Aufhaspel etwas schneller fahren und umgekehrt.
Claims (9)
- Vorrichtung zum Walzen von Bändern mit periodisch veränderlicher Banddicke, wobei die Walzvorrichtung ein Walzgerüst mit einem Walzensatz und einem Anstellsystem zur Bestimmung des Walzspaltes aufweist, dem das Bandmaterial mit einer Ausgangsdicke eingangsseitig von einer Abhaspel aus zugeführt wird und von dem aus das Bandmaterial mit der jeweils gewollten Enddicke ausgangsseitig einer Aufhaspel zugeführt wird, dadurch gekennzeichnet, dass sowohl zwischen der Abhaspel (10) und dem Walzgerüst (1) als auch zwischen dem Walzgerüst (1) und der Aufhaspel (11) eine Ausgleichs-bzw.Tänzerrolle (12, 13) angeordnet ist, um die das Bandmaterial (4) schleifenförmig herumgeführt ist, und die bei konstanter Umfangsgeschwindigkeit der den Walzspalt bestimmenden Walzen (2, 3) des Walzgerüsts (1) geregelt werden, um einen gewollten Bandzug aufzubringen.
- Vorrichtung nach Anspruch 1, dadurch gekennzeichnet, dass die Tänzerrollen (12, 13) mit dem Ziel kraftgeregelt werden, dass ein gewollter Bandzug vorliegt.
- Vorrichtung nach den Ansprüchen 1 und 2, dadurch gekenn zeichnet, dass die Haspel (10, 11) drehzahlgeregelt sind.
- Vorrichtung nach den Ansprüchen 1 bis 3, dadurch gekenn zeichnet, dass die Soll-Drehzahl der Haspel (10, 11) unter Berücksichtigung des jeweiligen Coil-Durchmessers auf den Mittelwert der Bandgeschwindigkeit eingestellt wird und von der Abhaspel (10) so viel Band (4) abgespult wird, wie im Mittel Band in den Walzspalt eingezogen wird und so viel Band auf die Aufhaspel (11) aufgewickelt wird, wie Band den Walzspalt verläßt.
- Vorrichtung nach den Ansprüchen 1 bis 4, dadurch gekennzeichnet, dass Ortsverlagerungen der Tänzerrollen (12, 13) infolge der Gleichgewichtsstörungen zwischen Bandabzug von der Abhaspel (10) und dem Bandeinzug in den Walzspalt und/oder zwischen Bandaustritt aus dem Walzspalt und Aufwickeln des Bandes auf die Aufhaspel (11) ermittelt und in Regelsignale für die Drehzahlen von Ab- und Aufhaspel umgesetzt werden.
- Vorrichtung insbesondere nach einem der Ansprüche 1 bis 5, gekennzeichnet durch ein Mittel zum Verfolgen des Materialflusses und zur Lieferung von Befehlssignalen für die Bestimmung der in periodischer Folge sich ändernden Banddikke.
- Vorrichtung nach Anspruch 6, dadurch gekennzeichnet, dass das Mittel zum Verfolgen des Materialflusses ein an sich bekanntes Schieberegister ist.
- Vorrichtung nach Anspruch 6 oder Anspruch 7, gekennzeichnet durch Mittel zur Verbesserung der Konstanz des Bandzuges durch Ermittlung der Periodizität der Banddickenänderung und die Aufschaltung einer Störgröße für die Kompensation der auf die Ausgleichs- bzw. Tänzerrollen (12, 13) einwirkenden Beschleunigungskräfte.
- Vorrichtung nach einem der Ansprüche 6 bis 8, gekennzeichnet durch eine zyklische abtastende Planheitsregelung, die auf der Basis eines Meßsystems zur Materialverfolgung jeweils die im Bereich des Bandaustritts aus dem Walzspalt gemessene Bandplanheit-Istwert mit einem vorgegebenen Bandplanheit-Sollwert vergleicht und Korrekturbefehle für die Walzenbiegung und gegebenenfalls andere, die Bandplanheit beeinflussende Komponenten bildet.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE10004532A DE10004532A1 (de) | 2000-02-02 | 2000-02-02 | Vorrichtung zum Walzen von Bändern mit periodisch veränderlicher Bandenddicke |
| DE10004532 | 2000-02-02 |
Publications (4)
| Publication Number | Publication Date |
|---|---|
| EP1121990A2 true EP1121990A2 (de) | 2001-08-08 |
| EP1121990A3 EP1121990A3 (de) | 2004-01-14 |
| EP1121990B1 EP1121990B1 (de) | 2006-05-24 |
| EP1121990B2 EP1121990B2 (de) | 2012-02-29 |
Family
ID=7629574
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP01102289A Expired - Lifetime EP1121990B2 (de) | 2000-02-02 | 2001-02-01 | Vorrichtung zum Walzen von Bändern mit periodisch veränderlicher Banddicke |
Country Status (3)
| Country | Link |
|---|---|
| EP (1) | EP1121990B2 (de) |
| AT (1) | ATE327058T1 (de) |
| DE (2) | DE10004532A1 (de) |
Cited By (8)
| 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 (de) * | 2006-03-15 | 2007-09-20 | Siemens Aktiengesellschaft | Walzverfahren für ein walzgut zum einbringen einer stufe in das walzgut |
| EP1908534A1 (de) * | 2006-10-07 | 2008-04-09 | ACHENBACH BUSCHHÜTTEN GmbH | Walzwerk und Verfahren zum flexiblen Kalt- oder Warm-Einweg- oder Reversierwalzen von Metallband |
| 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)
| 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 |
| EP3610961B1 (de) | 2018-08-15 | 2023-04-19 | Muhr und Bender KG | Vorrichtung, walzanlage und verfahren zum regeln eines bandzuges beim flexiblen walzen von metallband |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| BE556915A (de) * | 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 |
-
2000
- 2000-02-02 DE DE10004532A patent/DE10004532A1/de not_active Withdrawn
-
2001
- 2001-02-01 AT AT01102289T patent/ATE327058T1/de not_active IP Right Cessation
- 2001-02-01 DE DE50109838T patent/DE50109838D1/de not_active Expired - Lifetime
- 2001-02-01 EP EP01102289A patent/EP1121990B2/de not_active Expired - Lifetime
Cited By (17)
| 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 (de) * | 2006-03-15 | 2007-09-20 | Siemens Aktiengesellschaft | Walzverfahren für ein walzgut zum einbringen einer stufe in das walzgut |
| 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 (de) * | 2006-10-07 | 2008-04-09 | ACHENBACH BUSCHHÜTTEN GmbH | Walzwerk und Verfahren zum flexiblen Kalt- oder Warm-Einweg- oder Reversierwalzen von Metallband |
| 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 (de) | 2018-12-06 | 2020-06-11 | Sms Group Gmbh | Verfahren zum betreiben eines walzgerüstes zum stufenwalzen |
| 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 |
|---|---|
| EP1121990B2 (de) | 2012-02-29 |
| EP1121990B1 (de) | 2006-05-24 |
| DE50109838D1 (de) | 2006-06-29 |
| EP1121990A3 (de) | 2004-01-14 |
| ATE327058T1 (de) | 2006-06-15 |
| DE10004532A1 (de) | 2001-08-30 |
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