EP1479460A1 - Method and apparatus for continuous straightening of metal strips - Google Patents

Method and apparatus for continuous straightening of metal strips Download PDF

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Publication number
EP1479460A1
EP1479460A1 EP04002761A EP04002761A EP1479460A1 EP 1479460 A1 EP1479460 A1 EP 1479460A1 EP 04002761 A EP04002761 A EP 04002761A EP 04002761 A EP04002761 A EP 04002761A EP 1479460 A1 EP1479460 A1 EP 1479460A1
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EP
European Patent Office
Prior art keywords
stretching
zones
zone
roller
tension
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EP04002761A
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German (de)
French (fr)
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EP1479460B1 (en
Inventor
Rolf Dipl.Ing. Noé
Andreas Dr.mont Dipl.-Ing. Noé
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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
    • B21D1/05—Stretching combined with rolling

Definitions

  • the invention relates to a method for continuous Stretching of metallic strips, especially of Tapes with a tape thickness of 0.05 mm to 1.5 mm, after which the respective belt a brake roller set and a pull roller set passes through and between the two sets of roles in In the course of its stretching in the plastic area a stretch is subjected.
  • a stretching in the plastic area will often referred to as elastic-plastic stretching, because when the yield strength of the concerned is exceeded Tape material a residual elasticity in the tape material remains.
  • stretching systems for steel and metal strips are also known with a brake roller set and a pull roller set, at which two stretching zones are realized to improve To achieve flatness results.
  • the length of the first stretching zone and the second stretching zone the respective maximum bandwidth is coordinated (cf. DE 101 14 883 C1).
  • the invention is based on the technical problem Process for the continuous stretching of metallic Bands of the embodiment described above specify with which optimized flatness results let achieve.
  • the invention teaches that the belt runs through three or more stretching zones between the two sets of rolls and is stretched in the stretching / plastic (or elastic-plastic) and / or elastic range in these stretching zones.
  • the at least third and consequently additional stretching zone surprisingly achieves a further equalization of the longitudinal stress distribution and the resulting changes in strip length and transverse shape. This results in optimal judging results.
  • the tape can be stretched in all stretching zones in the plastic area. According to a preferred embodiment of the invention, however, it is provided that - when three stretching zones are implemented - the strip in the stretching zone on the inlet side and in the stretching zone on the outlet side is stretched in the plastic region and in the middle stretching zone located between these zones only a strip tension lying in the elastic range is subjected.
  • the strip tension in the middle stretching zone is ⁇ 80%, preferably ⁇ 50% of the yield strength of the strip material in question.
  • the belt will pass through the middle stretching zone with a residence time of ⁇ 1 second.
  • the invention also relates to a train stretching system which especially to carry out the claimed method is suitable and easy and functional Excellent design.
  • This is the train stretching system characterized that between the brake roller set and the Draw roller set two or more pairs of draw rollers arranged are, the inlet-side stretching zone between the two Drawstring rollers of the pair of drawstring rollers on the inlet side stretching zone on the outlet side between the two draw rolls the pair of drawstring rollers on the outlet side and the middle one Stretch zone is formed between the two pairs of draw rollers is.
  • the Bracing of brake roller set, tension stretching roller pairs and set of traction rollers can be done in a known manner.
  • At least one draw roller 4 or 6 of the pairs of draw rollers 4, 5 and 6, 7 can be used as a concave / convex Drawstring roller, each with different settings Geometry be formed.
  • the tape 1 in the individual stretching zones I, II, III each of one or several linear motors, which is not shown is.
  • the belt 1 passes through three stretching zones I, II, III between the brake roller set 2 and the pulling roller set and is stretched in the stretching zone in the plastic and / or elastic range.
  • the strip is stretched in the plastic region in the stretching zone I on the inlet side and in the plastic region in the stretching zone III on the outlet side and in the middle stretching zone II located between these two zones is only subjected to a strip tension lying in the elastic region. This results in the rounding 8 of the flow curve 9 shown in the stress-strain diagram when the yield strength of the strip material in question is exceeded and consequently in the transition region from the elastic region to the plastic region.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Shaping By String And By Release Of Stress In Plastics And The Like (AREA)
  • Straightening Metal Sheet-Like Bodies (AREA)
  • Metal Rolling (AREA)
  • Metal Extraction Processes (AREA)

Abstract

The continuous stretching process takes place in a stretching plant which may have e.g. three stretching zones (I, II, III) and is applied to a metal strip (1), which runs through the stretching zones between a braking roll set (2) and a traction roll set (3). In these stretching zones, it is stretched in the plastic region and/or in the elastic region.

Description

Die Erfindung betrifft ein Verfahren zum kontinuierlichen Zugrecken von metallischen Bändern, insbesondere von Bändern mit einer Banddicke von 0,05 mm bis 1,5 mm, wonach das jeweilige Band einen Bremsrollensatz und einen Zugrollensatz durchläuft und zwischen beiden Rollensätzen im Zuge seiner Reckung im plastischen Bereich einem Streckzug unterworfen wird. Eine Reckung im plastischen Bereich wird häufig auch als elastisch-plastische Reckung bezeichnet, weil beim Überschreiten der Streckgrenze des betreffenden Bandmaterials eine Restelastizität in dem Bandmaterial verbleibt.The invention relates to a method for continuous Stretching of metallic strips, especially of Tapes with a tape thickness of 0.05 mm to 1.5 mm, after which the respective belt a brake roller set and a pull roller set passes through and between the two sets of roles in In the course of its stretching in the plastic area a stretch is subjected. A stretching in the plastic area will often referred to as elastic-plastic stretching, because when the yield strength of the concerned is exceeded Tape material a residual elasticity in the tape material remains.

Es ist bekannt, zum Planieren von dünnen metallischen Bändern Zugreckanlagen mit einem Bremsrollensatz und einem Zugrollensatz einzusetzen. Beide Rollensätze weisen regelmäßig zwei oder mehr Rollen auf, die mit gestaffelten Drehmomenten und folglich Streckzügen beaufschlagt werden, so dass schließlich der für die gewünschte Reckung erforderliche Streckzug zwischen dem Bremsrollensatz und dem Zugrollensatz erreicht wird. Im Zuge des Reckvorganges wird die plastische Längung des betreffenden Bandes aus der Reduzierung der Banddicke und Bandbreite bezogen. Dabei treten Längsspannungen und daraus resultierende Querspannungen auf, welche vom Bandmaterial abhängig sind. Daraus können in der Bandmitte größere Längsformänderungen resultieren, die einerseits zu mehr oder minder starken Mittenschüsseln führen, andererseits zu ungleichmäßig über die Bandbreite verteilte Restspannungen. Um die bei der plastischen Reckung auftretenden Verformungen auf ein Minimum zu reduzieren und folglich die Bildung von Mittenschüsseln sowie ungleichmäßig verteilte Restspannungen nahezu zu eliminieren, kennt man ein Verfahren der eingangs beschriebenen Ausführungsform, wonach das Band in einem zwischen dem Bremsrollensatz und dem Zugrollensatz zwischengeschalteten Zugreckrollehpaar dem zu seiner Reckung, im plastischen Bereich erforderlichen Streckzug unterworfen wird (vgl. DE 39 12 676 C2).It is known for leveling thin metallic Tensioning systems with one brake roller set and one To use the pull roller set. Both role sets show regularly two or more rollers with staggered torques and consequently stretches are applied, so that finally the one for the desired stretching required stretch between the brake roller set and the set of pull rollers is reached. In the course of the stretching process is the plastic elongation of the band in question from the Reduction of strip thickness and bandwidth related. there longitudinal stresses and the resulting transverse stresses occur which depend on the tape material. This can result in major longitudinal changes in the middle of the belt result, on the one hand, to more or less strong Center bowls lead on the other hand to unevenly the bandwidth distributed residual voltages. To the at plastic stretching occurring deformations on a Reduce minimum and consequently the formation of center bowls as well as unevenly distributed residual stresses To almost eliminate, one knows a method of the beginning described embodiment, according to which the tape in a between the brake roller set and the pull roller set interposed train stretching roller pair to his Stretching, stretching required in the plastic area is subjected (see. DE 39 12 676 C2).

Ferner kennt man Zugreckanlagen für Stahl- und Metallbänder mit einem Bremsrollensatz und einem Zugrollensatz, bei denen zwei Reckzonen verwirklicht sind, um verbesserte Planheitsergebnisse zu erzielen. Dazu wird beispielsweise die Länge der ersten Reckzone und der zweiten Reckzone auf die jeweils maximale Bandbreite abgestimmt (vgl. DE 101 14 883 C1).Train stretching systems for steel and metal strips are also known with a brake roller set and a pull roller set, at which two stretching zones are realized to improve To achieve flatness results. For example the length of the first stretching zone and the second stretching zone the respective maximum bandwidth is coordinated (cf. DE 101 14 883 C1).

Der Erfindung liegt das technische Problem zu Grunde, ein Verfahren zum kontinuierlichen Zugrecken von metallischen Bändern der eingangs beschriebenen Ausführungsform anzugeben, mit dem sich optimierte Planheitsergebnisse erzielen lassen.The invention is based on the technical problem Process for the continuous stretching of metallic Bands of the embodiment described above specify with which optimized flatness results let achieve.

Zur Lösung dieses Problems lehrt die Erfindung, dass das Band zwischen beiden Rollensätzen drei oder mehr Reckzonen durchläuft und in diesen Reckzonen im plastischen (bzw. elastisch-plastischen) Bereich und/oder elastischen Bereich gereckt wird. Durch die zumindest dritte und folglich zusätzliche Reckzone wird überraschenderweise eine weitere Vergleichmäßigung der Längsspannungsverteilung und der daraus resultierenden Bandlängs- und -querformänderungen erreicht. Daraus resultieren optimale Richtergebnisse. Dabei kann das Band in allen Reckzonen im plastischen Bereich gereckt werden. Nach einer bevorzugten Ausführungsform der Erfindung ist jedoch vorgesehen, dass - bei Verwirklichung von drei Reckzonen - das Band in der einlaufseitigen Reckzone und in der auslaufseitigen Reckzone im plastischen Bereich gereckt wird und in der zwischen diesen Zonen befindlichen mittleren Reckzone lediglich einer im elastischen Bereich liegenden Bandzugspannung unterworfen wird. Daraus resultiert eine Abrundung der Fließkurve im Spannungs-Dehnungs-Schaubild beim Überschreiten der Streckgrenze zwischen dem elastischen und plastischen Bereich, weil eben das Band in der mittleren Reckzone eine Entlastung vom plastischen in den elastischen Bereich und eine Wiederbelastung von dem elastischen Bereich in den plastischen Bereich erfährt. Um diesen Effekt zu optimieren, liegt die Bandzugspannung in der mittleren Reckzone bei ≤ 80 %, vorzugsweise ≤ 50 % der Streckgrenze des betreffenden Bandmaterials. In diesem Zusammenhang ist vorgesehen, dass das Band die mittlere Reckzone mit einer Verweildauer von ≥ 1 Sekunde durchläuft.To solve this problem, the invention teaches that the belt runs through three or more stretching zones between the two sets of rolls and is stretched in the stretching / plastic (or elastic-plastic) and / or elastic range in these stretching zones. The at least third and consequently additional stretching zone surprisingly achieves a further equalization of the longitudinal stress distribution and the resulting changes in strip length and transverse shape. This results in optimal judging results. The tape can be stretched in all stretching zones in the plastic area. According to a preferred embodiment of the invention, however, it is provided that - when three stretching zones are implemented - the strip in the stretching zone on the inlet side and in the stretching zone on the outlet side is stretched in the plastic region and in the middle stretching zone located between these zones only a strip tension lying in the elastic range is subjected. This results in a rounding of the flow curve in the stress-strain diagram when the yield point between the elastic and plastic area is exceeded, because the tape in the middle stretching zone relieves the plastic from the elastic area and reloads it from the elastic area to the plastic area experiences. In order to optimize this effect, the strip tension in the middle stretching zone is ≤ 80%, preferably ≤ 50% of the yield strength of the strip material in question. In this context, it is envisaged that the belt will pass through the middle stretching zone with a residence time of ≥ 1 second.

Werden im Rahmen der Erfindung mehr als drei Reckzonen vorgesehen, beispielsweise fünf Reckzonen, so lehrt die Erfindung in entsprechender Weise, dass das Band beim Durchlaufen von fünf Reckzonen in den beiden einlaufseitigen Reckzonen und in den beiden auslaufseitigen Reckzonen im plastischen Bereich und in der mittleren Reckzone im elastischen Bereich gereckt wird bzw. die Bandzuspannung im elastischen Bereich liegt. Durch das Zurückführen der Bandzugspannung auf den elastischen Bereich wird bei drei, fünf oder mehr Reckzonen praktisch die Verwirklichung von zwei getrennten Zugreckanlagen simuliert. Folglich resultiert aus dem erfindungsgemäßen Verfahren eine besonders kompakte und raumsparende Bauweise für die zur Durchführung des Verfahrens erforderliche Zugreckanlage. Ferner sieht die Erfindung vor, dass das Band nach dem Durchlaufen der einlaufseitigen Reckzone oder Reckzonen aufgewickelt und abgewickelt wird. Durch dieses Zwischen-Aufwickeln werden überraschenderweise Kriecheffekte im späteren Coil kompensiert.Are more than three stretching zones within the scope of the invention provided, for example five stretching zones, so teaches Invention in a corresponding manner that the tape Passing through five stretching zones in the two inlets Stretching zones and in the two stretching zones on the outlet side in the plastic area and in the middle stretching zone is stretched in the elastic range or the band tension lies in the elastic range. By returning the Belt tension on the elastic area is at three, five or more stretching zones practically the realization of two separate train stretching systems simulated. consequently results from the method according to the invention particularly compact and space-saving design for the Execution of the process required train stretching. Furthermore, the invention provides that the band after the Passing through the stretching zone or stretching zones on the inlet side is wound up and unwound. By this intermediate winding are surprisingly creep effects in later coil compensated.

Gegenstand der Erfindung ist auch eine Zugreckanlage, die zur Durchführung des beanspruchten Verfahrens besonders geeignet ist und sich durch einfache und funktionsgerechte Bauweise auszeichnet. Diese Zugreckanlage ist dadurch gekennzeichnet, dass zwischen dem Bremsrollensatz und dem Zugrollensatz zwei oder mehr Zugreckrollenpaare angeordnet sind, wobei die einlaufseitige Reckzone zwischen den beiden Zugreckrollen des einlaufseitigen Zugreckrollenpaares, die auslaufseitige Reckzone zwischen den beiden Zugreckrollen des auslaufseitigen Zugreckrollenpaares und die mittlere Reckzone zwischen den beiden Zugreckrollenpaaren gebildet ist. Sind dagegen zwischen dem Bremsrollensatz und dem Zugrollensatz vier Zugreckrollenpaare angeordnet, dann befinden sich zwei Reckzonen jeweils zwischen den beiden Zugreckrollen der beiden einlaufseitigen Zugreckrollenpaare und zwei Reckzonen jeweils zwischen den beiden Zugreckrollen der beiden auslaufseitigen Zugreckrollenpaare, während sich die mittlere Reckzone zwischen dem letzten einlaufseitigen Zugreckrollenpaar und dem ersten auslaufseitigen Zugreckrollenpaar befindet. Weiter lehrt die Erfindung, dass zumindest jeweils eine Zugreckrolle der Zugreckrollenpaare als eine konkave/konvexe Zugreckrolle. mit jeweils unterschiedlich einstellbarer Geometrie ausgebildet ist. Bei derartigen Zugreckrollen ist der Rollenmantel zwischen einer konvexen Außenwölbung und einer konkaven. Innenwölbung einstellbar, um auch auf diesem Wege im Zuge des Planierens von metallischen Bändern Randwellen und Mittenschüsseln in erheblichem Maße zu verringern oder ganz zu eliminieren (vgl. DE 42 30 243 C1) Insoweit wird im Übrigen auch eine verbesserte Anpassung an unterschiedliche Bandbreiten erreicht. Endlich sieht die Erfindung vor, dass das Band in den einzelnen Reckzonen jeweils von einem oder mehreren Linearmotoren beaufschlagt ist. Der Einsatz von Linearmotoren setzt den Einsatz von Metallbändern aus nichtferomagnetischem Material, zum Beispiel Bundmetall voraus und ermöglicht eine feinfühlige und gezielte Einstellung der Spannungsverteilung (vgl. DE 197 19 994 A1).The invention also relates to a train stretching system which especially to carry out the claimed method is suitable and easy and functional Excellent design. This is the train stretching system characterized that between the brake roller set and the Draw roller set two or more pairs of draw rollers arranged are, the inlet-side stretching zone between the two Drawstring rollers of the pair of drawstring rollers on the inlet side stretching zone on the outlet side between the two draw rolls the pair of drawstring rollers on the outlet side and the middle one Stretch zone is formed between the two pairs of draw rollers is. In contrast, are between the brake roller set and the pull roller set four tension stretching roller pairs arranged, then there are two stretching zones between the two Drawstring rollers of the two pairs of inlet stretching rollers on the inlet side and two stretching zones between the two draw rolls of the two pairs of drafting rollers on the outlet side, while the middle stretch zone is between the last inlet-side draw roller pair and the first outlet-side Pulling roller pair is located. The teaches on Invention that at least one drawstring roller each Draw roller pairs as a concave / convex draw roller. with different adjustable geometry is trained. With such tension stretching rollers Roller jacket between a convex outer curvature and one concave. Interior curvature adjustable to this way too in the course of leveling metallic bands and significantly reduce center bowls or to be eliminated entirely (cf. DE 42 30 243 C1) also an improved adjustment to different bandwidths reached. Finally she sees Invention before that the tape in the individual stretching zones each acted upon by one or more linear motors is. The use of linear motors implies the use of Metal bands made of nonferomagnetic material, for For example, fret metal ahead and enables a sensitive and targeted adjustment of the voltage distribution (cf. DE 197 19 994 A1).

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

Fig. 1
eine Zugreckanlage mit drei Reckzonen in schematischer Seitenansicht und
Fig. 2
ein Spannungs-Dehnungs-Schaubild.
The invention is explained in more detail below on the basis of a drawing illustrating only one exemplary embodiment. Show it:
Fig. 1
a train stretching system with three stretching zones in a schematic side view and
Fig. 2
a stress-strain diagram.

In den Figuren ist eine Zugreckanlage zum kontinuierlichen Zugrecken von dünnen Metallbändern 1 aus insbesondere Stahl, Edelstahl, Aluminium oder dergleichen mit einer Banddicke zwischen 0,05 mm und 1,5 mm dargestellt. Diese Zugreckanlage weist in ihrem grundsätzlichen Aufbau einen Bremsrollensatz 2 und einen Zugrollensatz 3 auf. Zwischen dem Bremsrollensatz 2 und dem Zugrollensatz 3 sind nach dem Ausführungsbeispiel zwei Zugreckrollenpaare 4, 5 und 6, 7 angeordnet, wobei eine einlaufseitige Reckzone I zwischen den beiden Zugreckrollen 4, 5 des einlaufseitigen Zugreckrollenpaares, eine auslaufseitige Reckzone III zwischen den beiden Zugreckrollen 6, 7 des auslaufseitigen Zugreckrollenpaares und eine mittlere Reckzone II zwischen den beiden Zugreckrollenpaaren 4, 5 und 6, 7 gebildet ist. Die Verspannung von Bremsrollensatz, Zugreckreckrollenpaaren und Zugrollensatz kann in bekannter Weise erfolgen. Zumindest jeweils eine Zugreckrolle 4 bzw. 6 der Zugreckrollenpaare 4, 5 und 6, 7 kann als eine konkave/konvexe Zugreckrolle mit jeweils unterschiedlich einstellbarer Geometrie ausgebildet sein. Außerdem kann das Band 1 in den einzelnen Reckzonen I, II, III jeweils von einem oder mehreren Linearmotoren beaufschlagt sein, was nicht gezeigt ist.In the figures there is a continuous stretching system Stretching of thin metal strips 1 in particular Steel, stainless steel, aluminum or the like with one Strip thickness between 0.05 mm and 1.5 mm shown. This Train stretching system has one in its basic structure Brake roller set 2 and a pull roller set 3. Between the brake roller set 2 and the pull roller set 3 are after Embodiment two tension roller pairs 4, 5 and 6, 7th arranged, an inlet-side stretching zone I between the two drafting rollers 4, 5 of the pair of drafting rollers on the inlet side, an outlet-side stretching zone III between the two drafting rollers 6, 7 of the pair of drafting rollers on the outlet side and a middle stretch zone II between the two tensioning roller pairs 4, 5 and 6, 7 is formed. The Bracing of brake roller set, tension stretching roller pairs and set of traction rollers can be done in a known manner. At least one draw roller 4 or 6 of the pairs of draw rollers 4, 5 and 6, 7 can be used as a concave / convex Drawstring roller, each with different settings Geometry be formed. In addition, the tape 1 in the individual stretching zones I, II, III each of one or several linear motors, which is not shown is.

Bei der dargestellten Zugreckanlage durchläuft das Band 1 zwischen dem Bremsrollensatz 2 und dem Zugrollensatz drei Reckzonen I, II, III und wird in diesen Reckzonen im plastischen Bereich und/oder elastischen Bereich gereckt. Nach einer Ausführungsform wird das Band in der einlaufseitigen Reckzone I und in der auslaufseitigen Reckzone III im plastischen Bereich gereckt und in der zwischen diesen beiden Zonen befindlichen mittleren Reckzone II lediglich einer im elastischen Bereich liegenden Bandzugspannung unterworfen. Daraus resultiert die in dem Spannungs-Dehnungs-Schaubild dargestellte Abrundung 8 der Fließkurve 9 beim Überschreiten der Streckgrenze des betreffenden Bandmaterials und folglich im Übergangsbereich von dem elastischen Bereich in den plastischen Bereich. Dabei ist zur Verdeutlichung einmal die Fließkurve für eine dreimal plastische Reckung I → II → III und mit einer Zwischenentlastung in der mittleren Reckzone I → II' → III' und folglich mit lediglich einer elastischen Reckung in der mittleren Reckzone II dargestellt. Die gestrichelt dargestellte Abrundung 8 der Fließkurve 9 wird um so deutlicher, je länger das betreffende Band 1 in der mittleren Reckzone II einer im elastischen Bereich liegenden Bandzugspannung unterworfen wird.In the drawing stretching system shown, the belt 1 passes through three stretching zones I, II, III between the brake roller set 2 and the pulling roller set and is stretched in the stretching zone in the plastic and / or elastic range. According to one embodiment, the strip is stretched in the plastic region in the stretching zone I on the inlet side and in the plastic region in the stretching zone III on the outlet side and in the middle stretching zone II located between these two zones is only subjected to a strip tension lying in the elastic region. This results in the rounding 8 of the flow curve 9 shown in the stress-strain diagram when the yield strength of the strip material in question is exceeded and consequently in the transition region from the elastic region to the plastic region. For the sake of clarity, there is the flow curve for three times plastic stretching I → II → III and with an intermediate relief in the middle stretch zone I → II '→ III' and consequently shown with only one elastic stretching in the middle stretching zone II. The rounding 8 of the flow curve 9 shown in dashed lines becomes all the clearer the longer the band 1 in question is subjected to a band tension in the central stretching zone II in the elastic range.

Claims (10)

Verfahren zum kontinuierlichen Zugrecken von metallischen. Bändern, insbesondere mit einer Banddicke von 0,05 mm bis 1,5 mm, wonach das jeweilige Band einen Bremsrollensatz und einen Zugrollensatz durchläuft und zwischen beiden Rollensätzen im Zuge seiner Reckung im plastischen Bereich einem Streckzug unterworfen wird, dadurch gekennzeichnet, dass das Band zwischen beiden Rollensätzen drei oder mehr Reckzonen durchläuft und in diesen Reckzonen im plastischen Bereich und/oder elastischen Bereich gereckt wird.Process for the continuous stretching of metallic. Bands, in particular with a band thickness of 0.05 mm to 1.5 mm, after which the respective band passes through a brake roller set and a pull roller set and is subjected to a stretching stretch between the two roller sets in the course of its stretching in the plastic region, characterized in that the band between passes through two or more stretching zones in both roller sets and is stretched in the stretching range in the plastic range and / or elastic range. Verfahren nach Anspruch 1, dadurch gekennzeichnet, dass das Band in allen Reckzonen im plastischen Bereich gereckt wird.A method according to claim 1, characterized in that the band is stretched in all stretching zones in the plastic area. Verfahren nach Anspruch 1, dadurch gekennzeichnet, dass das Band in der einlaufseitigen Reckzone und in der auslaufseitigen Reckzone im plastischen Bereich gereckt wird und in der zwischen diesen Zonen befindlichen mittleren Reckzone einer im elastischen Bereich liegenden Bandzugspannung unterworfen wird.A method according to claim 1, characterized in that the strip is stretched in the plastic region in the stretching zone on the inlet side and in the plastic region in the stretching zone on the outlet side and is subjected to a strip tension in the elastic region located between these zones. Verfahren nach Anspruch 1 oder 3, dadurch gekennzeichnet, dass die Bandzugspannung in der mittleren Reckzone bei ≤ 80 %, vorzugsweise ≤ 50 % der Streckgrenze des Bandmaterials liegt. A method according to claim 1 or 3, characterized in that the strip tension in the middle stretching zone is ≤ 80%, preferably ≤ 50% of the yield strength of the strip material. Verfahren nach einem der Ansprüche 1 bis 4, dadurch gekennzeichnet, dass das Band die mittlere Reckzone mit einer Verweildauer ≥ 1 Sekunde durchläuft.Method according to one of claims 1 to 4, characterized in that the belt passes through the middle stretching zone with a residence time ≥ 1 second. Verfahren nach Anspruch 1 oder 5, dadurch gekennzeichnet, dass das Band beim Durchlaufen von fünf Reckzonen in den beiden einlaufseitigen Reckzonen und in den beiden auslaufseitigen Reckzonen im plastischen Bereich und in der mittleren Reckzone im elastischen Bereich gereckt wird.A method according to claim 1 or 5, characterized in that the tape is stretched in the plastic region and in the elastic stretching zone in the elastic region in the two stretching zones on the inlet side and in the two stretching zones on the outlet side when it passes through five stretching zones. Verfahren nach einem der Ansprüche 1 bis 6, dadurch gekennzeichnet, dass das Band nach dem Durchlaufen der einlaufseitigen Reckzone oder Reckzonen zwischenaufgewickelt wird.Method according to one of claims 1 to 6, characterized in that the tape is wound up after passing through the stretching zone or stretching zones on the inlet side. Zugreckanlage zum Durchführen des Verfahrens nach einem der Ansprüche 1 bis 7, mit einem Bremsrollensatz und einem Zugrollensatz, dadurch gekennzeichnet, dass zwischen dem Bremsrollensatz (2) und dem Zugrollensatz (3) zwei oder mehr Zugreckrollenpaare (4, 5 und 6, 7) angeordnet sind, wobei eine einlaufseitige Reckzone (I) zwischen den beiden Zugreckrollen (4, 5) des einlaufseitigen Zugreckrollenpaares, eine auslaufseitige Reckzone (III) zwischen den beiden Zugreckrollen (6, 7) des auslaufseitigen Zugreckrollenpaares und eine mittlere Reckzone (II) zwischen den beiden Zugreckrollenpaaren (4, 5 und 6, 7) gebildet ist.Draw stretching system for carrying out the method according to one of claims 1 to 7, with a brake roller set and a pull roller set, characterized in that two or more pairs of draw stretch rollers (4, 5 and 6, 7) are arranged between the brake roller set (2) and the pull roller set (3) are, an inlet-side stretching zone (I) between the two tension stretching rollers (4, 5) of the inlet-side tension stretching roller pair, an outlet-side stretching zone (III) between the two tension stretching rollers (6, 7) of the outlet-side tension stretching roller pair and a middle stretching zone (II) between the two Traction roller pairs (4, 5 and 6, 7) is formed. Zugreckanlage nach Anspruch 8, dadurch gekennzeichnet, dass zumindest jeweils eine Zugreckrolle (4 und 6) der Zugreckrollenpaare als eine konkave/konvexe Zugreckrolle mit jeweils unterschiedlich einstellbarer Geometrie ausgebildet ist.Draw stretching system according to claim 8, characterized in that at least one draw stretch roller (4 and 6) of the draw stretch roller pairs is designed as a concave / convex draw stretch roller, each with a geometry which can be set differently. Zugreckanlage nach Anspruch 8 oder 9, dadurch gekennzeichnet, dass das Band (1) in den einzelnen Reckzonen (I, II, III) jeweils von einem oder mehreren Linearmotoren beaufschlagt ist.Train stretching system according to claim 8 or 9, characterized in that the belt (1) in each of the stretching zones (I, II, III) is acted upon by one or more linear motors.
EP04002761A 2003-05-23 2004-02-06 Method and apparatus for continuous straightening of metal strips Expired - Lifetime EP1479460B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE10323811 2003-05-23
DE10323811A DE10323811A1 (en) 2003-05-23 2003-05-23 Method for the continuous drawing of metallic strips and drawstring line

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EP1479460A1 true EP1479460A1 (en) 2004-11-24
EP1479460B1 EP1479460B1 (en) 2006-02-01

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US (1) US7013693B2 (en)
EP (1) EP1479460B1 (en)
AT (1) ATE316830T1 (en)
DE (2) DE10323811A1 (en)
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DE102008024013B3 (en) * 2008-05-16 2009-08-20 Bwg Bergwerk- Und Walzwerk-Maschinenbau Gmbh Method and device for straightening a metal strip
KR101821284B1 (en) * 2013-08-22 2018-01-23 비스포크, 인코포레이티드 Method and system to create custom products
US10010918B2 (en) 2016-10-05 2018-07-03 Allor Manufacturing Inc. Device and method for leveling a metal plate

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EP1479460B1 (en) 2006-02-01
ATE316830T1 (en) 2006-02-15
ES2252710T3 (en) 2006-05-16
DE502004000267D1 (en) 2006-04-13
DE10323811A1 (en) 2005-01-13
US7013693B2 (en) 2006-03-21
US20050016241A1 (en) 2005-01-27

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