EP1275446A2 - Method and apparatus for eliminating of gutter curvatures in metal sheets - Google Patents

Method and apparatus for eliminating of gutter curvatures in metal sheets Download PDF

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Publication number
EP1275446A2
EP1275446A2 EP02004606A EP02004606A EP1275446A2 EP 1275446 A2 EP1275446 A2 EP 1275446A2 EP 02004606 A EP02004606 A EP 02004606A EP 02004606 A EP02004606 A EP 02004606A EP 1275446 A2 EP1275446 A2 EP 1275446A2
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EP
European Patent Office
Prior art keywords
strip
curvatures
transverse
metal
transverse curvatures
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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
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EP02004606A
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German (de)
French (fr)
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EP1275446A3 (en
EP1275446B1 (en
EP1275446B2 (en
Inventor
Dr. Mont Dipl.-Ing Noé Andreas
Dipl.- Ing. Noé Rolf
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BWG Bergwerk und Walzwerk Maschinenbau GmbH
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BWG Bergwerk und Walzwerk Maschinenbau GmbH
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D1/00—Straightening, restoring form or removing local distortions of sheet metal or specific articles made therefrom; Stretching sheet metal combined with rolling
    • B21D1/02—Straightening, restoring form or removing local distortions of sheet metal or specific articles made therefrom; Stretching sheet metal combined with rolling by rollers

Definitions

  • the invention relates to a method for eliminating Cross-bends in metal strips in a strip processing line with at least one to be traversed by the metal strip Belt treatment device, the transverse curvatures in a belt process line area detected and by at least a correction roller adjustable in its immersion depth be eliminated by means of a semi-elastic bend.
  • one of the first one Stretch bending straightening and / or tension stretching device with downstream Correction of curvature is.
  • the stretch bending and / or tension stretching device an annealing furnace with a cooling zone, so the metal strip after cooling again unplanned and especially with a Cross curvature.
  • the next belt treatment facility can it be a stain, which the passage of a metal strip that is sufficiently free of curvature required.
  • the invention has for its object a generic Procedure to be specified after being in metal strips Cross curvatures in system and space-saving as well as less expensive Have way largely eliminated in such a way that Belt damage in subsequent belt treatment facilities are not to be feared.
  • a device suitable for carrying out this method be created by simple and functional Excellent design.
  • the invention teaches in procedural terms Terms that eliminating the cross-bends in a belt process line area immediately before the belt treatment device is carried out or carried out becomes.
  • a single correction roll is sufficient, which creates a semi-plastic counterbend.
  • the recommends Invention that the elimination of these cross-bends using correction rolls assigned to each hinge side and consequently is carried out by means of two correction rollers.
  • the metal strips in their transverse curvature behavior sufficient are constant can be more specific for a metal strip Visual quality one for eliminating the Cross-curvature suitable adjustment of the correction roller (or correction rolls) and then this setting can be saved. Every time a metal band is the same Quality goes through the strip treatment line again, the correction roll can be set to the saved value adjust and then generates a sufficiently low cross-curvature Metal tape before entering the following Strip processing facility.
  • the metal straps is variable, recommends the Invention that the transverse curvatures of the metal strips in question are measured and the measured values as control variables continuously recorded and after an actual value / target value comparison for the immersion depth of the correction roller (or Correction roll) in a closed control loop for correction of the transverse curvatures are used.
  • the transverse curvatures of the metal strips in question are measured and the measured values as control variables continuously recorded and after an actual value / target value comparison for the immersion depth of the correction roller (or Correction roll) in a closed control loop for correction of the transverse curvatures are used.
  • cross curvatures within the scope of the invention eliminate after the metal strip in question a Band flatness negatively influencing band treatment facility has gone through This applies, for example, to in the event that the metal strip is straightened after a stretch bending or stretching to eliminate cross-curvature Band flatness again influencing band treatment like for example, has gone through an annealing process.
  • the invention provides that the influence any ripples present in the metal strip on the measurements of the transverse curvatures by integrating the Measured values over a specified period of time or by means of a moving averaging is filtered out.
  • the invention gives knowledge from the fact that the metal band turns on due to ripples one place over the bandwidth, in the case of edge waves on band edge, periodically raises and lowers. Consequently, filter out the influence on the measurement of the transverse curvature, by, for example, measuring signals over a sufficient, multiple times the wave period Period, if necessary the maximum and minimum values are averaged or just a moving one Averaging takes place.
  • the invention further sees that the influence may be present in the metal band Band sabers on the measurements of the transverse curvatures mathematical correction of the skew of the measured transverse curvatures is filtered out over the bandwidth.
  • the invention is based on the knowledge that Band sabers lead to an oblique position of the transverse curvature curve. This skew can be mathematically filtered out, by z. B. each the mean of the values of two points equally formed from the center of the band becomes.
  • the invention also relates to a device for Eliminate cross-bends in metal strips in particular is suitable, with a measuring device for Detect the transverse curvatures of the metal strip in question is arranged.
  • This device is characterized in that that in the direction of tape travel in front of the tape treatment device at least one in immersion against that each metal band adjustable correction roller arranged is, and that the correction role depending on the each recorded transverse curvature from an intermediate Control device control signals to regulate the Receives cross curvatures.
  • This device can also be used in Belt running direction in front of the belt treatment device an adjustable on each side of the metal band Correction roll can be provided to level or hump trough-shaped transverse curvatures on both sides of the metal band to eliminate.
  • the correction roller 5 can on the opposite Two guide rollers 6 can be assigned to the hinge side.
  • the correction roller 5 receives depending on the detected transverse curvature 1 from an intermediate Control device 7 control signals to correct the transverse curvatures.
  • control devices 7 control signals to correct the transverse curvatures.
  • the influence of in the metal strip 2 existing ripples 10 on the measurements the transverse curvatures 1 by integrating the measured values over a predetermined period of time or by means of a sliding Averaging can be filtered out.
  • the Figures 4 to 6 can influence the presence in the metal band Band saber 11 on the measurements of the transverse curvatures 1 by mathematical correction of the skew of the measured transverse curvatures 1 can be filtered out over the bandwidth.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Straightening Metal Sheet-Like Bodies (AREA)
  • Heat Treatment Of Strip Materials And Filament Materials (AREA)
  • Length Measuring Devices With Unspecified Measuring Means (AREA)
  • Investigating Materials By The Use Of Optical Means Adapted For Particular Applications (AREA)
  • Length Measuring Devices By Optical Means (AREA)
  • Control Of Metal Rolling (AREA)
  • Processing And Handling Of Plastics And Other Materials For Molding In General (AREA)

Abstract

Crossbow in metal strip in a strip processing line is eliminated immediately upstream of a strip processing device by measuring the crossbow and controlling response to the measured value penetration depth of a correcting roller into strip while the latter is supported by a pair of support rolls. The device is provided immediately upstream of the processing unit.

Description

Die Erfindung betrifft ein Verfahren zum Beseitigen von Querkrümmungen in Metallbändern in einer Bandprozesslinie mit zumindest einer von dem Metallband zu durchlaufenden Bandbehandlungseinrichtung, wobei die Querkrümmungen in einem Bandprozesslinienbereich erfasst und mittels zumindest einer in ihrer Eintauchtiefe einstellbaren Korrekturrolle im Wege einer semiplastischen Biegung eliminiert werden.The invention relates to a method for eliminating Cross-bends in metal strips in a strip processing line with at least one to be traversed by the metal strip Belt treatment device, the transverse curvatures in a belt process line area detected and by at least a correction roller adjustable in its immersion depth be eliminated by means of a semi-elastic bend.

Es ist ein derartiges Verfahren zum Beseitigen von Querkrümmungen in Metallbändern bekannt, die im Zuge eines kontinuierlichen Richtens im einer Bandprozesslinie streckbiegegerichtet und/oder zuggereckt werden, wobei die Querkrümmung im Anschluss an das Steckbiegerichten und/oder Zugrecken in einem Bandprozesslinienbereich mit einem wesentlich niedrigeren Bandzug als dem im Streckbiegerichtund/oder Zugreckbereich erfasst und mittels einer in Ihrer Eintauchtiefe einstellbaren Korrekturrolle ausgeregelt wird. (Vgl. DE 43 23 385 C1). Es gibt jedoch Fälle, wo innerhalb einer Bandprozesslinie das Metallband lediglich weitgehend Querkrümmungsfrei, nicht aber idealplan und folglich auch nicht frei von Welligkeiten und/oder Bandsäbeln sein muss. Durchläuft beispielsweise ein Metallband in einer Blankglühlinie für Edelstahlbänder unter reduziertem Bandzug einen vertikalen Glühofen, dann kann das Metallband an der Innenseite des Glühofens schleifen, wenn es eine zu starke Querkrümmung aufweist. Daraus resultieren unerwünschte Bandoberflächenbeschädigungen. Welligkeiten und/oder Bandsäbel sind in einem solchen Fall in der Regel so klein, dass dadurch keine Bandoberflächenbeschädigungen zu befürchten sind. Es reicht also in einem solchen Fall aus, lediglich die Querkrümmung hinreichend zu beseitigen, nicht aber eventuell vorhandene Welligkeiten und/oder Bandsäbel zu korrigieren. - In einem anderen Fall kann es sich um eine Bandprozesslinie mit mehreren Bandbehandlungseinrichtungen handeln, von denen eine der ersten eine Streckbiegericht- und/oder Zugreckeinrichtung mit nachgeschalteter Querkrümmungskorrektur ist. Folgt beispielsweise hinter der Streckbiegericht- und/oder Zugreckeinrichtung ein Glühofen mit einer Kühlzone, so kann das Metallband nach dem Kühlen wieder unplan und insbesondere mit einer Querkrümmung behaftet sein. Bei der nächsten Bandbehandlungseinrichtung kann es sich um eine Beize handeln, welche den Durchlauf eines hinreichend querkrümmungsfreien Metallbandes verlangt. Zwar könnte man daran denken, im Anschluss an die Beize eine zweite Streckbiegericht- und/oder Zugreckeinrichtung vorzusehen, jedoch ist das nicht nur in anlagentechnischer Hinsicht und aus Kostengründen verhältnismäßig aufwendig, sondern häufig steht für eine solche zweite Streckbiegericht- und/oder Zugreckeinrichtung auch gar nicht der hinreichende Platz zur Verfügung. Ein weiterer Fall sind Beizlinien für dicke Metallbänder aus beispielsweise Kohlenstoffstahl oder Edelstahl. Hat das Metallband beim Durchlaufen der Beize eine Querkrümmung, so können sich die Bandkanten in dort vorhandene Umlenkrollen und gegebenenfalls Abquetschrollen einschneiden und deren Oberflächenbeschichtung beschädigen. Auch hier lässt sich häufig die Investition in eine Streckbiegerichtanlage oder Zugreckanlage nicht rechtfertigen. Dennoch hätte man gern ein hinreichend querkrümmungsarmes Metallband, um Rollenbeschädigungen zu vermeiden.It is such a method of eliminating cross-bends known in metal strips, which in the course of a continuous Straightening in a strip process line and / or be stretched, the transverse curvature following the plug-in straightening and / or Stretching in a belt process line area with a much lower belt tension than that in the stretch bending direction and / or Zugreckbereich recorded and by means of one in your Immersion depth adjustable correction roller adjusted becomes. (See DE 43 23 385 C1). However, there are cases where the metal strip within a strip process line largely free of curvature, but not ideal plan and consequently not free from ripples and / or band sabers have to be. For example, runs through a metal strip in a bright annealing line for stainless steel strips under reduced Strip a vertical annealing furnace, then that can Grind the metal band on the inside of the annealing furnace, if it has too much transverse curvature. The result undesirable damage to the belt surface. waviness and / or band sabers are usually in such a case so small that there is no damage to the belt surface are to be feared. In such a case, it is enough only to eliminate the transverse curvature sufficiently, but not any existing ripples and / or band sabers to correct. - In another case, it can around a belt process line with several belt treatment facilities act, one of the first one Stretch bending straightening and / or tension stretching device with downstream Correction of curvature is. For example follows behind the stretch bending and / or tension stretching device an annealing furnace with a cooling zone, so the metal strip after cooling again unplanned and especially with a Cross curvature. At the next belt treatment facility can it be a stain, which the passage of a metal strip that is sufficiently free of curvature required. You could think of it afterwards to the stain a second stretch bending and / or tension stretching device to be provided, but this is not only in plant-technical and proportionate for cost reasons expensive, but often stands for such second stretch bending straightening and / or tension stretching device too not enough space available. On Another case are pickling lines for thick metal strips for example carbon steel or stainless steel. Has the Metal band a transverse curvature when passing through the stain, see above can the band edges in existing pulleys and if necessary, cut squeeze rolls and cut them Damage the surface coating. Here too often the investment in a stretch bending straightening system or Do not justify train stretching. Still, you'd like to a sufficiently low-curvature metal band to prevent damage to the roller to avoid.

Der Erfindung liegt die Aufgabe zugrunde, ein gattungsgemäßes Verfahren anzugeben, nachdem sich in Metallbändern Querkrümmungen in anlagen- und platzsparender sowie kostengünstiger Weise weitgehend derart eliminieren lassen, dass Bandbeschädigungen in nachfolgenden Bandbehandlungseinrichtungen nicht zu befürchten sind. Außerdem soll eine zur Durchführung dieses Verfahrens geeignete Vorrichtung geschaffen werden, die sich durch einfache und funktionsgerechte Bauweise auszeichnet.The invention has for its object a generic Procedure to be specified after being in metal strips Cross curvatures in system and space-saving as well as less expensive Have way largely eliminated in such a way that Belt damage in subsequent belt treatment facilities are not to be feared. In addition, a device suitable for carrying out this method be created by simple and functional Excellent design.

Zur Lösung dieser Aufgabe lehrt die Erfindung in verfahrensmäßiger Hinsicht, dass das Eliminieren der Querkrümmungen in einem Bandprozesslinienbereich unmittelbar vor der Bandbehandlungseinrichtung erfolgt bzw. vorgenommen wird. Ist das betreffende Metallband nur in eine Richtung quergekrümmt, genügt eine einzige Korrekturrolle, welche eine semiplastische Gegenbiegung erzeugt. Ist das betreffende Metallband in beiden Richtungen beispielsweise buckel- oder wannenförmig quergekrümmt, empfiehlt die Erfindung, dass die Eliminierung dieser Querkrümmungen mittels jeder Bandseite zugeordneter Korrekturrollen und folglich mittels zwei Korrekturrollen vorgenommen wird. - Wenn die Metallbänder in ihren Querkrümmungsverhalten hinreichend konstant sind, kann für ein Metallband bestimmter Qualität auf visuellem Wege eine für die Beseitigung der Querkrümmungen geeignete Einstellung der Korrekturrolle (oder Korrekturrollen) ermittelt und dann diese Einstellung abgespeichert werden. Jedes Mal, wenn ein Metallband gleicher Qualität die Bandbehandlungslinie wieder durchläuft, lässt sich die Korrekturrolle auf den gespeicherten Wert einstellen und erzeugt dann ein hinreichend querkrümmungsarmes Metallband vor dem Einlaufen in die nachfolgende Bandbehandlungseinrichtung. Für den Fall, dass die Querkrümmung der Metallbänder variabel ist, empfiehlt die Erfindung, dass die Querkrümmungen der betreffenden Metallbänder gemessen werden und die Messwerte als Regelgrößen fortwährend erfasst und nach einem Ist-Wert/Soll-Wert-Vergleich für die Eintauchtiefe der Korrekturrolle (bzw. Korrekturrolle) in einem geschlossenen Regelkreis zum Ausregeln der Querkrümmungen verwendet werden. Stets lassen sich im Rahmen der Erfindung die Querkrümmungen auch dann eliminieren, nachdem das betreffende Metallband eine die Bandplanlage negativ beeinflussende Bandbehandlungseinrichtung durchlaufen hat. Das gilt beispielsweise für den Fall, dass das Metallband nach einem Streckbiegerichten oder Zugrecken zur Beseitigung von Querkrümmungen eine die Bandplanlage wieder beeinflussende Bandbehandlung wie beispielsweise einem Glühprozess durchlaufen hat.To achieve this object, the invention teaches in procedural terms Terms that eliminating the cross-bends in a belt process line area immediately before the belt treatment device is carried out or carried out becomes. Is the metal strip in question only in one direction cross-curved, a single correction roll is sufficient, which creates a semi-plastic counterbend. Is that in question Metal tape in both directions, for example humped or trough-shaped, the recommends Invention that the elimination of these cross-bends using correction rolls assigned to each hinge side and consequently is carried out by means of two correction rollers. - If the metal strips in their transverse curvature behavior sufficient are constant, can be more specific for a metal strip Visual quality one for eliminating the Cross-curvature suitable adjustment of the correction roller (or correction rolls) and then this setting can be saved. Every time a metal band is the same Quality goes through the strip treatment line again, the correction roll can be set to the saved value adjust and then generates a sufficiently low cross-curvature Metal tape before entering the following Strip processing facility. In the event that the transverse curvature the metal straps is variable, recommends the Invention that the transverse curvatures of the metal strips in question are measured and the measured values as control variables continuously recorded and after an actual value / target value comparison for the immersion depth of the correction roller (or Correction roll) in a closed control loop for correction of the transverse curvatures are used. Always leave cross curvatures within the scope of the invention eliminate after the metal strip in question a Band flatness negatively influencing band treatment facility has gone through This applies, for example, to in the event that the metal strip is straightened after a stretch bending or stretching to eliminate cross-curvature Band flatness again influencing band treatment like for example, has gone through an annealing process.

Weitere erfindungswesentliche Merkmale sind im Folgenden aufgeführt. So sieht die Erfindung vor, dass der Einfluss von gegebenenfalls im Metallband vorhandenen Welligkeiten auf die Messungen der Querkrümmungen durch Integration der Messwerte über einen vorgegebenen Zeitraum oder mittels einer gleitenden Mittelwertbildung herausgefiltert wird. In diesem Zusammenhang gibt die Erfindung von der Erkenntnis aus, dass sich das Metallband in Folge von Welligkeiten an einer Stelle über die Bandbreite, im Falle von Randwellen an Bandrand, periodisch hebt und senkt. Folglich lässt sich der Einfluss auf die Messung der Querkrümmung herausfiltern, indem zum Beispiel die Messsignale über einen ausreichenden, dem mehrfachen der Wellenperiode entsprechenden Zeitraum integriert werden, gegebenenfalls dabei die Maximal- und Minimalwerte gemittelt werden oder eben eine gleitende Mittelwertbildung erfolgt. Weiter sieht die Erfindung vor, dass der Einfluss gegebenenfalls im Metallband vorhandener Bandsäbel auf die Messungen der Querkrümmungen durch rechnerische Korrektur der Schieflage der gemessenen Querkrümmungen über die Bandbreite herausgefiltert wird. In diesem Fall geht die Erfindung von der Erkenntnis aus, dass Bandsäbel zu einer Schieflage der Querkrümmungskurve führen. Diese Schieflage lässt sich rechnerisch herausfiltern, indem z. B. jeweils der Mittelwert aus den Werten zweier gleichweit von der Bandmitte entfernter Punkte gebildet wird.Further features essential to the invention are as follows listed. So the invention provides that the influence any ripples present in the metal strip on the measurements of the transverse curvatures by integrating the Measured values over a specified period of time or by means of a moving averaging is filtered out. In In this context, the invention gives knowledge from the fact that the metal band turns on due to ripples one place over the bandwidth, in the case of edge waves on band edge, periodically raises and lowers. Consequently, filter out the influence on the measurement of the transverse curvature, by, for example, measuring signals over a sufficient, multiple times the wave period Period, if necessary the maximum and minimum values are averaged or just a moving one Averaging takes place. The invention further sees that the influence may be present in the metal band Band sabers on the measurements of the transverse curvatures mathematical correction of the skew of the measured transverse curvatures is filtered out over the bandwidth. In In this case, the invention is based on the knowledge that Band sabers lead to an oblique position of the transverse curvature curve. This skew can be mathematically filtered out, by z. B. each the mean of the values of two points equally formed from the center of the band becomes.

Gegenstand der Erfindung ist auch eine Vorrichtung, die zum Beseitigen von Querkrümmungen in Metallbändern besonders geeignet ist, wobei in Bandlaufrichtung ein Messgerät zum Erfassen der Querkrümmungen des betreffenden Metallbandes angeordnet ist. Diese Vorrichtung ist dadurch gekennzeichnet, dass in Bandlaufrichtung vor der Bandbehandlungseinrichtung zumindest eine in die Eintauchtiefe gegen das jeweilige Metallband einstellbare Korrekturrolle angeordnet ist, und dass die Korrekturrolle in Abhängigkeit von der jeweils erfassten Querkrümmung von einer zwischengeschalteten Regelvorrichtung Stellsignale zum Ausregeln der Querkrümmungen erhält. Bei dieser Vorrichtung kann auch in Bandlaufrichtung vor der Bandbehandlungseinrichtung auf beiden Seiten des Metallbandes jeweils eine einstellbare Korrekturrolle vorgesehen sein, um eben buckel- oder wannenförmige Querkrümmungen auf beiden Seiten des Metallbandes zu eliminieren.The invention also relates to a device for Eliminate cross-bends in metal strips in particular is suitable, with a measuring device for Detect the transverse curvatures of the metal strip in question is arranged. This device is characterized in that that in the direction of tape travel in front of the tape treatment device at least one in immersion against that each metal band adjustable correction roller arranged is, and that the correction role depending on the each recorded transverse curvature from an intermediate Control device control signals to regulate the Receives cross curvatures. This device can also be used in Belt running direction in front of the belt treatment device an adjustable on each side of the metal band Correction roll can be provided to level or hump trough-shaped transverse curvatures on both sides of the metal band to eliminate.

Im Folgenden wird die Erfindung anhand einer lediglich ein Ausführungsbeispiel darstellenden Zeichnung näher erläutert. Es zeigen:

Fig. 1
Eine erfindungsgemäße Vorrichtung zum Beseitigen von Querkrümmungen in Metallbändern in schematischer Seitenansicht,
Fig. 2
eine Querschnitt durch ein Metallband mit Querkrümmung und überlagerter Randwelligkeit,
Fig. 3
ein randwelliges, jedoch querkrümmungsfreies Metallband in Seitenansicht seiner Bandlaufrichtung,
Fig. 4
einen Querschnitt durch ein Metallband mit reiner Querkrümmung,
Fig. 5
einen Querschnitt durch ein Metallband mit reinem Bandsäbel und
Fig. 6
ein Metallband mit der Kombination Querkrümmung und Bandsäbel.
The invention is explained in more detail below on the basis of a drawing illustrating only one exemplary embodiment. Show it:
Fig. 1
A device according to the invention for eliminating transverse curvatures in metal strips in a schematic side view,
Fig. 2
a cross section through a metal band with transverse curvature and superimposed edge ripple,
Fig. 3
a corrugated but non-curvature metal belt in side view of its belt running direction,
Fig. 4
a cross section through a metal strip with pure transverse curvature,
Fig. 5
a cross section through a metal band with pure band saber and
Fig. 6
a metal band with the combination of transverse curvature and band saber.

In den Figuren ist eine Vorrichtung zum Beseitigen von Querkrümmungen 1 in Metallbändern 2 dargestellt, wobei in Bandlaufrichtung ein Messgerät 3 zum Erfassen der Querkrümmungen 1 des betreffenden Metallbandes 2 angeordnet ist. Ferner ist in Bandlaufrichtung vor einer Bandbehandlungseinrichtung 4 eine in die Eintauchtiefe gegen das jeweilige Metallband einstellbare Korrekturrolle 5 angeordnet. Der Korrekturrolle 5 können auf der gegenüberliegenden Bandseite zwei Führungsrollen 6 zugeordnet sein. Die Korrekturrolle 5 erhält in Abhängigkeit von der jeweils erfassten Querkrümmung 1 von einer zwischengeschalteten Regelvorrichtung 7 Stellsignale zum Ausregeln der Querkrümmungen. - Ferner ist angedeutet, dass in Bandlaufrichtung vor der Behandlungseinrichtung 4 auf der anderen Bandseite eine weitere Korrekturrolle 8 zwischen zwei gegenüberliegenden Führungsrollen 9 vorgesehen sein kann, um beidseitige Querkrümmungen 1 eliminieren zu können.In the figures is a device for removing Cross curvatures 1 shown in metal strips 2, wherein in Belt running direction a measuring device 3 for detecting the transverse curvatures 1 of the metal strip 2 in question is. Furthermore, is in front of a belt treatment device in the belt running direction 4 one in the immersion depth against that each metal band adjustable correction roller 5 arranged. The correction roller 5 can on the opposite Two guide rollers 6 can be assigned to the hinge side. The correction roller 5 receives depending on the detected transverse curvature 1 from an intermediate Control device 7 control signals to correct the transverse curvatures. - It is also indicated that in the tape running direction in front of the treatment facility 4 on the another hinge roll 8 between correction two opposite guide rollers 9 may be provided can to eliminate double-sided curvatures 1 to can.

Nach den Figuren 2 und 3 kann der Einfluss von im Metallband 2 vorhandenen Randwelligkeiten 10 auf die Messungen der Querkrümmungen 1 durch Integration der Messwerte über einen vorgegebenen Zeitraum oder mittels einer gleitenden Mittelwertbildung herausgefiltert werden. - Nach den Figuren 4 bis 6 kann der Einfluss im Metallband vorhandener Bandsäbel 11 auf die Messungen der Querkrümmungen 1 durch rechnerische Korrektur der Schieflage der gemessenen Querkrümmungen 1 über die Bandbreite herausgefiltert werden.According to Figures 2 and 3, the influence of in the metal strip 2 existing ripples 10 on the measurements the transverse curvatures 1 by integrating the measured values over a predetermined period of time or by means of a sliding Averaging can be filtered out. - After the Figures 4 to 6 can influence the presence in the metal band Band saber 11 on the measurements of the transverse curvatures 1 by mathematical correction of the skew of the measured transverse curvatures 1 can be filtered out over the bandwidth.

Claims (8)

Verfahren zum Beseitigen von Querkrümmungen in Metallbändern in einer Bandprozesslinie mit zumindest einer von dem Metallband zu durchlaufenden Behandlungseinrichtung, wobei die Querkrümmungen in einem Bandprozesslinienbereich erfasst und mittels zumindest einer in ihrer Eintauchtiefe einstellbaren Korrekturrolle eliminiert werde, dadurch gekennzeichnet, dass das Eliminieren der Querkrümmungen in einem Bandprozesslinienbereich unmittelbar vor der Bandbehandlungseinrichtung erfolgt.Method for eliminating transverse curvatures in metal strips in a strip process line with at least one treatment device to be traversed by the metal strip, wherein the transverse curvatures are recorded in a strip process line area and eliminated by means of at least one correction roller whose depth of immersion can be adjusted, characterized in that the elimination of the transverse curvatures in a strip process line area immediately before the belt treatment facility. Verfahren nach Anspruch 1, dadurch gekennzeichnet, dass bei auf beiden Seiten des Metallbandes vorhandenen Querkrümmungen deren Eliminierung mittels jeder Bandseite zugeordneter Korrekturrollen erfolgt.Method according to claim 1, characterized in that in the case of transverse curvatures present on both sides of the metal strip, their elimination is carried out by means of correction rollers assigned to each side of the strip. Verfahren nach Anspruch 1 oder 2, dadurch gekennzeichnet, dass die Querkrümmungen eliminiert werden, nachdem das Metallband eine die Bandplanlage negativ beeinflussende Bandbehandlungseinrichtung durchlaufen hat.Method according to claim 1 or 2, characterized in that the transverse curvatures are eliminated after the metal strip has passed through a strip treatment device which has a negative influence on the strip flatness. Verfahren nach einem der Ansprüche 1 bis 3, dadurch gekennzeichnet, dass die Querkrümmungen des Metallbandes gemessen werden und die Messwerte als Regelgrößen fortwährend erfasst und nach einem Ist-Wert/Soll-Wert-Vergleich für die Eintauchtiefe der Korrekturrolle in einem Regelkreis zum Ausregeln der Querkrümmungen verwendet werden.Method according to one of claims 1 to 3, characterized in that the transverse curvatures of the metal strip are measured and the measured values are continuously recorded as control variables and after an actual value / target value comparison for the immersion depth of the correction roller in a control circuit for correcting the transverse curvatures be used. Verfahren nach einem der Ansprüche 1 bis 4, dadurch gekennzeichnet, dass der Einfluss von gegebenenfalls im Metallband vorhandenen Welligkeiten auf die Messungen der Querkrümmungen durch Integration der Messwerte über einen vorgegebenen Zeitraum oder mittels einer gleitenden Mittelwertbildung herausgefiltert wird.Method according to one of claims 1 to 4, characterized in that the influence of any ripples present in the metal strip on the measurements of the transverse curvatures is filtered out by integrating the measured values over a predetermined period of time or by means of a moving averaging. Verfahren nach einem der Ansprüche 1 bis 5, dadurch gekennzeichnet, dass der Einfluss gegebenenfalls im Metallband vorhandener Bandsäbel auf die Messungen der Querkrümmungen durch rechnerische Korrektur der Schieflage der gemessenen Querkrümmungen über die Bandbreite herausgefiltert wird.Method according to one of claims 1 to 5, characterized in that the influence of band sabers which may be present in the metal band on the measurements of the transverse curvatures is filtered out by means of arithmetic correction of the skew of the measured transverse curvatures over the bandwidth. Vorrichtung zum Beseitigen von Querkrümmungen in Metallbändern, zur Durchführung des Verfahrens nach einem der Ansprüche 1 bis 6, wobei in Bandlaufrichtung ein Messgerät (3) zum Erfassen der Querkrümmungen (1) des betreffenden Metallbandes (2) angeordnet ist, dadurch gekennzeichnet, dass in Bandlaufrichtung vor einer Bandbehandlungseinrichtung (4) zumindest eine in die Eintauchtiefe gegen das jeweilige Metallband (2) einstellbare Korrekturrolle (5) angeordnet ist, und dass die Korrekturrolle (5) in Abhängigkeit von der jeweils erfassten Querkrümmung (1) von einer zwischengeschalteten Regelvorrichtung (7) Stellsignale zum Ausregeln der Querkrümmungen (1) erhält.Device for eliminating transverse curvatures in metal strips, for carrying out the method according to one of claims 1 to 6, wherein a measuring device (3) for detecting the transverse curvatures (1) of the relevant metal strip (2) is arranged in the strip running direction, characterized in that in the strip running direction At least one correction roller (5) which is adjustable in the immersion depth against the respective metal strip (2) is arranged in front of a strip treatment device (4), and that the correction roller (5) is dependent on an interposed control device (7) depending on the transverse curvature (1) detected in each case. Control signals for correcting the transverse curvatures (1) receives. Vorrichtung nach Anspruch 7, dadurch gekennzeichnet, dass in Bandlaufrichtung vor der Bandbehandlungseinrichtung (4) auf beiden Seiten des Metallbandes (2) eine einstellbare Korrekturrolle (5,8) vorgesehen ist.Apparatus according to claim 7, characterized in that an adjustable correction roller (5, 8) is provided on both sides of the metal strip (2) in the strip running direction in front of the strip treatment device (4).
EP02004606.6A 2001-05-22 2002-02-28 Method for eliminating of gutter curvatures in metal sheets Expired - Lifetime EP1275446B2 (en)

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DE10124836 2001-05-22
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ES2315323T5 (en) 2013-11-14
EP1275446A3 (en) 2004-03-31
DE10124836B4 (en) 2004-08-26
ES2315323T3 (en) 2009-04-01
DE10124836A1 (en) 2002-12-19
DE10124836C5 (en) 2007-07-19
EP1275446B1 (en) 2008-10-01
DE50212825D1 (en) 2008-11-13
US20020174699A1 (en) 2002-11-28
EP1275446B2 (en) 2013-09-04
ATE409531T1 (en) 2008-10-15

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