EP1796858A1 - Device for the continuous lengthening of a metal strip by traction, and method for operating one such device - Google Patents

Device for the continuous lengthening of a metal strip by traction, and method for operating one such device

Info

Publication number
EP1796858A1
EP1796858A1 EP05793007A EP05793007A EP1796858A1 EP 1796858 A1 EP1796858 A1 EP 1796858A1 EP 05793007 A EP05793007 A EP 05793007A EP 05793007 A EP05793007 A EP 05793007A EP 1796858 A1 EP1796858 A1 EP 1796858A1
Authority
EP
European Patent Office
Prior art keywords
roller
diameter
metal strip
roll
rollers
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
EP05793007A
Other languages
German (de)
French (fr)
Other versions
EP1796858B1 (en
EP1796858B2 (en
Inventor
Andreas Gramer
Hans-Georg Hartung
Holger Behrens
Jan Christoph HÄUSLER
Fritz Luckmann
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
SMS Siemag AG
Original Assignee
SMS Demag AG
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
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Application filed by SMS Demag AG filed Critical SMS Demag AG
Priority to PL05793007T priority Critical patent/PL1796858T3/en
Publication of EP1796858A1 publication Critical patent/EP1796858A1/en
Publication of EP1796858B1 publication Critical patent/EP1796858B1/en
Application granted granted Critical
Publication of EP1796858B2 publication Critical patent/EP1796858B2/en
Not-in-force legal-status Critical Current
Anticipated expiration legal-status Critical

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Classifications

    • 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 device for continuously drawing a metal strip, which has at least three S-roller units in the belt conveying direction, each having at least two rollers, wherein the rollers are positioned so that they are umschl the metal belt over a circumferential roll angle of more than 180 °. Furthermore, the invention relates to a method for operating such a device.
  • a device for drawing a metal strip and an associated method for its operation is known from EP 0 393 301 B2.
  • the metal strip to be stretched passes through five roller units arranged one behind the other, which loop around the metal strand in an S shape and can build up a tensile stress in the metal strip by correspondingly driving the rollers of the roller units.
  • a plastic elongation in the metal strip is completed, which leads to a reduction of the strip thickness and bandwidth.
  • a tensile stress is built up in a first tensile region in the metal strip, which reaches almost to the yield strength ( ⁇ p o, 2) or even beyond.
  • the belt tension remains just below the yield strength, forms in conjunction with the finite bending radius to the role of the S-roll unit from a Vorreckzone, in which the bandwidth is elastically reduced.
  • the actual stretching is produced in a second tensile region extending downstream in the conveying direction of the metal strip.
  • the strip tension for the elastic deformation of the strip is applied between a brake roller set and a pull roll set.
  • the strip tension for the plastic deformation of the strip is generated in an intermediate pair of tension rollers.
  • EP 0 936 954 B1 discloses a drafting system in which the two stretching zones are formed between a brake roller set and a centrally arranged stretching roller and between this stretching roller and a downstream tension roller set.
  • DE 36 36 707 C2 discloses a draw-stretching installation for a metal strip in which the flatness-improving effect is achieved by stretching the strip by means of a bending in the direction of bending under tension around small rolls.
  • the invention is therefore an object of the invention to provide a Switzerlandreckvortechnische of the aforementioned type and an associated Switzerlandreckvon, with or with which the draw-stretching can be further improved.
  • the solution of this object by the invention is device according to characterized in that at least the second belt in the conveyor direction S-roller unit of the draw-stretching device has two rollers whose diameter is of different sizes.
  • the roll of the second S-roll unit following in the belt conveying direction preferably has the larger diameter.
  • the device has five S-roll units each having at least two rollers.
  • the fourth in the belt conveying direction S-roller unit may have two rollers whose diameter is un ⁇ different sized. Further, in this case, the subsequent in the band conveying direction role of the fourth S-roll unit have the smaller diameter.
  • the larger diameter roll of the S-roll unit has at least 1.25 times the diameter of the smaller diameter roll.
  • the larger diameter roll of the S-roll unit has at least 1.5 times the diameter, preferably twice the diameter, of the smaller diameter roll.
  • the third roller unit has two rollers auf ⁇ having a diameter corresponding to the diameter of the larger roller of the second and fourth roller unit.
  • the first and the fifth roller unit can each have two rollers which have a diameter which corresponds to the diameter of the smaller roller of the second or fourth roller unit.
  • the second S-roll unit in the belt conveying direction can be equipped with means for measuring the tensile force applied by the rollers to the metal strip.
  • the fourth in the belt conveying direction S-roller unit can be equipped with means for measuring the force applied by the rollers on the metal strip tensile force.
  • the method according to the invention for operating the draw-stretching device is characterized in that a tensile stress which is between 96% and 100% of the yield strength of the material of the metal strip is established in the second S-roll unit in the metal belt in the belt conveying direction.
  • the tensile stress is preferably between 96% and 99.8%, ie just below 100%, of the yield strength of the material.
  • a tensile stress is built up which is more than 100% of the yield strength of the material of the metal strip.
  • a tensile stress is built up which is between 96% and 100% of the yield strength of the material of the metal strip or again just below (to 99.8% of the yield strength).
  • a tensile stress is built up which is more than 100% of the yield strength of the material of the metal band, in which case the metal band is further plastically deformed.
  • FIG. 1 An embodiment of the invention is shown.
  • the single figure only very schematically shows a device for drawing a metal strip in the side view, wherein essentially only the rollers used are shown.
  • a metal band 2 is processed, which may be a thin metal band.
  • the metal strip may be made of steel, stainless steel or non-ferrous metal. Typical tape thicknesses can be between 0.05 and 0.5 mm.
  • the device 1 for drawing has five successively arranged S-roll units 3, 4, 5, 6 and 7.
  • Each S-roll unit 3, 4, 5, 6, 7 has two rollers 8, 9, 10, 11, 12, 13, 14, 15, 16 and 17, wherein the rollers are arranged so that the metal strand 2 over a Roll circumference angle ⁇ of at least 180 ° around the rolls.
  • the roller circumferential angle ⁇ is entered as an example; it is about 210 °.
  • the rollers are drivable, so that a strip tension can be applied to the metal strand 2.
  • the metal strip 2 passes through the device 1 in the belt conveying direction R at a conveying speed v.
  • the strip tension is increased on the intake side by the surrounding system train level above the first S-roller unit 3.
  • Behind the S-roller unit 3 means 18 for measuring the tensile force in the metal strip 2 are arranged.
  • the tensile force behind the S-roller unit 3 must be known in order to be able to define the train level for the further controlled train construction and then to be able to control or regulate it.
  • the adjoining S-roller unit 4 has the two rollers 10 and 11, which have significantly different diameters, namely the diameters Di 0 and Du.
  • the roll diameter D 10 can be about 600 mm - values between 400 mm and 800 mm are typical - while the diameter Du can be 1,200 mm, whereby values between 1,000 mm and 1,400 mm are typical.
  • the first roller 10 of the S-roller unit 4 has the same diameter as the rollers 8 and 9 of the first S-roller unit 3.
  • the second S-roll unit 4 has means 19 for measuring the tensile force in the metal strip 2 (torque measurement).
  • the strip tension which is set between the rollers 10 and 11 by corresponding actuation of the drives (not shown) of the rollers 10, 11, is at such a level that computationally no edge fiber plasticization of the strip to be stretched occurs.
  • the following roll 11 of the S-roll unit 4 has the considerably larger diameter Du, this roll 11 builds the strip tension to a level of more than 96% to just below 100% of the yield stress. Since the Rollen ⁇ radius is finite, an edge fiber strain by bending the tape can not be excluded, but to reduce by the dimensioning of the diameter to an acceptable level.
  • the S-roll unit 6 is again designed with a large-diameter roll 14 and a subsequent small roll 15, wherein this roll unit 6 forms a mirror image of the S-roll unit 4 in front of the take-up roll pair 12, 13.
  • the strip tension means 20 for measuring the tensile force are also provided in the S-roller unit 6 again.
  • a strip tension level is set at which plasticization of the metal strip 2 upon emergence onto the then following small roll 15 is prevented.
  • the small roller 15 sets the Bandzugni ⁇ level to the level required for the following Bandzugress level.
  • the tape tension measurement is carried out by means 23 for measuring the tensile force.
  • the last, fifth S-roll unit 7 again corresponds in mirror image to the first S-roll unit 3 and has rollers 16, 17 which have the same small roller diameter as the rollers 10 or 15. This S-roll unit 7 lowers the strip tension to the desired or required for the subsequent part of the system from level.
  • measuring means 21 On the fourth S-roll unit 6 measuring means 21 are arranged, which detect the winning ⁇ speed v of the metal strip 2.
  • the measuring means 21 conduct the measured value to a control or regulating device 22 on which - which is shown only very schematically - on the drives of the S-roller units 3, 4, 5, 6, 7 acts so that a desired speed is achieved.
  • the roller 14, on which the conveyor speed or belt speed is measured in the present case, thus functions as a "speed master" with a downstream, speed-controlled main drive of the rollers or of the traction roller sets.
  • the strip tension is therefore held in front of the Werreckrollencru 12, 13 at a level between 96% to just below 100% of the yield limit; in zugreckrollencru 12, 13 of the necessary for the achievement of the set Reck- degree remaining portion of the strip tension is applied.
  • Behind the Buchreckrollencru 12, 13 of the strip tension is either lowered again to 96% to just below 100% of the yield limit train or the strip tension is increased to achieve a complementary further degree of stretching.
  • the last roller 11 of the S-roller unit 4 (brake roller guide) in front of the Wegreck ⁇ roller pair 12, 13 and the first roller 14 of the subsequent S-roller unit 6 (Zugrollengang) have the same diameter as the two rollers 12, 13 of the S-roller unit fifth As explained, this diameter is substantially greater than the diameter of the remaining rollers 8, 9, 10, 15, 16 and 17, which all have the same diameter.
  • the metal strip 2 between the two rollers 10 and 11 has a tension of about 55 to 70% of the yield strength of the material.
  • a tensile stress prevails between 96% to just below 100% of the yield strength; this rich is the Vorreckzone.
  • the first main stretching zone is between the rolls 12 and 13.
  • the second main stretching zone is the section between the rolls 13 and 14, where again usually a tensile stress of between 96% to just below 100% of the yield strength.
  • Between the rollers 14 and 15 is again - mirror image - a tensile stress of about 55 to 70% of the yield strength of the material before.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Straightening Metal Sheet-Like Bodies (AREA)
  • Heat Treatment Of Strip Materials And Filament Materials (AREA)
  • Controlling Rewinding, Feeding, Winding, Or Abnormalities Of Webs (AREA)
  • Winding, Rewinding, Material Storage Devices (AREA)
  • Coating With Molten Metal (AREA)
  • Metal Rolling (AREA)
  • Replacement Of Web Rolls (AREA)
  • Treatment Of Fiber Materials (AREA)
  • Registering, Tensioning, Guiding Webs, And Rollers Therefor (AREA)

Abstract

The invention relates to a device ( 1 ) for the continuous lengthening of a metal strip ( 2 ) by traction, said device comprising, in the strip transporting direction (R), at least three S-roll units ( 3, 4, 5, 6, 7 ) each provided with at least two rolls ( 8, 9 10, 11, 12, 13, 14, 15, 16, 17 ). According to the invention, the rolls ( 8, 9, 10, 11, 12, 13, 14, 15, 16, 17 ) are positioned in such a way that the metal strip ( 2 ) is wound round them at a roll periphery angle (a) of more than 180°, and at least the second S-roll unit ( 4 ) in the strip transporting direction (R) comprises two rolls ( 10, 11 ) with different-sized diameters (D<SUB>10</SUB>, D<SUB>11</SUB>).

Description

Vorrichtung zum kontinuierlichen Zugrecken eines Metallbandes und Ver¬ fahren zum Betreiben einer solchen VorrichtungApparatus for continuously drawing a metal strip and method for operating such a device
Die Erfindung betrifft eine Vorrichtung zum kontinuierlichen Zugrecken eines Metallbandes, die in Bandförderrichtung mindestens drei S-Rolleneinheiten mit je mindestens zwei Rollen aufweist, wobei die Rollen so positioniert sind, dass sie vom Metallband über einen Rollenumfangswinkel von mehr als 180° um- schlungen werden. Des Weiteren betrifft die Erfindung ein Verfahren zum Betreiben einer solchen Vorrichtung.The invention relates to a device for continuously drawing a metal strip, which has at least three S-roller units in the belt conveying direction, each having at least two rollers, wherein the rollers are positioned so that they are umschl the metal belt over a circumferential roll angle of more than 180 °. Furthermore, the invention relates to a method for operating such a device.
Eine Vorrichtung zum Zugrecken eines Metallbandes sowie ein zugehöriges Verfahren zu deren Betrieb ist aus der EP 0 393 301 B2 bekannt. Das zu stre- ckende Metallband durchläuft hier fünf hintereinander angeordnete Rollenein¬ heiten, die den Metallstrang S-förmig umschlingen und durch entsprechenden Antrieb der Rollen der Rolleneinheiten eine Zugspannung im Metallband auf¬ bauen können. Im Zuge des Reckvorganges wird eine plastische Längung im Metallband vollzogen, die zu einer Reduzierung der Banddicke und Bandbreite führt.A device for drawing a metal strip and an associated method for its operation is known from EP 0 393 301 B2. The metal strip to be stretched passes through five roller units arranged one behind the other, which loop around the metal strand in an S shape and can build up a tensile stress in the metal strip by correspondingly driving the rollers of the roller units. As part of the stretching process, a plastic elongation in the metal strip is completed, which leads to a reduction of the strip thickness and bandwidth.
Dabei wird in einem ersten Zugreckbereich im Metallband eine Zugspannung aufgebaut, die bis annähernd an die Streckgrenze (σpo,2) bzw. sogar darüber hinaus reicht. Im Falle dessen, dass die Bandspannung knapp unterhalb der Streckgrenze bleibt, bildet sich in Verbindung mit dem endlichen Biegeradius um die Rolle der S-Rolleneinheit eine Vorreckzone aus, in der die Bandbreite elastisch verringert wird. Die eigentliche Reckung wird in einem zweiten, in För¬ derrichtung des Metallbandes nachgeordneten Zugreckbereich erzeugt. Durch die Aufteilung der Zugreckung in zwei Bereiche wird das Planheitsergebnis im Metallband nach dem Zugrecken verbessert. Bei der Lösung gemäß der genannten EP O 393 301 B2 wird dabei zwischen einem Bremsrollensatz und einem Zugrollensatz der Bandzug für die elastische Verformung des Bandes aufgebracht. In einem dazwischen angeordneten Zug¬ reckrollenpaar wird der Bandzug für die plastische Verformung des Bandes er¬ zeugt.In this case, a tensile stress is built up in a first tensile region in the metal strip, which reaches almost to the yield strength (σ p o, 2) or even beyond. In the event that the belt tension remains just below the yield strength, forms in conjunction with the finite bending radius to the role of the S-roll unit from a Vorreckzone, in which the bandwidth is elastically reduced. The actual stretching is produced in a second tensile region extending downstream in the conveying direction of the metal strip. By dividing the extension into two areas, the flatness result in the metal strip after drawing is improved. In the case of the solution according to the cited EP 0 393 301 B2, the strip tension for the elastic deformation of the strip is applied between a brake roller set and a pull roll set. The strip tension for the plastic deformation of the strip is generated in an intermediate pair of tension rollers.
Aus der EP 0 936 954 B1 ist eine Zugreckanlage bekannt, bei der die beiden Reckzonen zwischen einem Bremsrollensatz und einer zentral angeordneten Reckwalze und zwischen dieser Reckwalze und einem nachgeordneten Zugrol¬ lensatz gebildet werden.EP 0 936 954 B1 discloses a drafting system in which the two stretching zones are formed between a brake roller set and a centrally arranged stretching roller and between this stretching roller and a downstream tension roller set.
Aus der EP 1 245 301 A2 ist weiterhin eine Anlage bekannt, bei der die beiden Reckzonen zwischen dem Bremsrollensatz und einer angetriebenen Rolle so¬ wie zwischen dieser Rolle und dem Zugrollensatz gebildet werden. Vorgesehen ist hier, dass die Länge der ersten und der zweiten Reckstrecke bzw. Reckzone jeweils mindestens das 0,5-fache der maximalen Bandbreite beträgt, wodurch das Planheitsergebnis des Reckvorgangs verbessert werden soll.From EP 1 245 301 A2 a system is also known in which the two stretching zones are formed between the brake roller set and a driven roller as well as between this roller and the pulling roller set. It is provided here that the length of the first and the second stretching section or stretching zone is at least 0.5 times the maximum bandwidth, whereby the flatness result of the stretching operation is to be improved.
Schließlich ist aus der DE 36 36 707 C2 eine Zugreckanlage für ein Metallband bekannt, bei der die planheitsverbessernde Wirkung durch Streckung des Ban- des mittels einer in der Richtung wechselnde Biegung unter Zug um kleine Rol¬ len erreicht wird.Finally, DE 36 36 707 C2 discloses a draw-stretching installation for a metal strip in which the flatness-improving effect is achieved by stretching the strip by means of a bending in the direction of bending under tension around small rolls.
Wenngleich die vorbekannten Vorrichtungen zum Zugrecken eines Metallban¬ des sowie die vorbekannten Verfahren bereits das Erhöhen des Planheitsgra- des eines Metallbandes erlauben, besteht das Bedürfnis, weiter verbesserte Anlagen und Verfahren zu schaffen, mit der das Metallband noch effizienter dem Zugreckvorgang unterzogen werden kann.Although the previously known devices for drawing a Metallban¬ and the previously known methods already allow the increase in the degree of planarity of a metal strip, there is a need to provide further improved systems and methods with which the metal strip can be subjected to the draw stretching process even more efficient.
Der Erfindung liegt daher die Aufgabe zugrunde, eine Zugreckvorrichtung der eingangs genannten Art sowie ein zugehöriges Zugreckverfahren zu schaffen, mit der bzw. mit dem der Zugreckvorgang weiter verbessert werden kann. Die Lösung dieser Aufgabe durch die Erfindung ist vorrichtungsgemäß dadurch gekennzeichnet, dass zumindest die in Bandförderrichtung zweite S- Rolleneinheit der Zugreckvorrichtung zwei Rollen aufweist, deren Durchmesser unterschiedlich groß ist.The invention is therefore an object of the invention to provide a Zugreckvorrichtung of the aforementioned type and an associated Zugreckverfahren, with or with which the draw-stretching can be further improved. The solution of this object by the invention is device according to characterized in that at least the second belt in the conveyor direction S-roller unit of the draw-stretching device has two rollers whose diameter is of different sizes.
Wie später noch gesehen werden wird, ergibt sich mittels dieser Maßnahme eine Verbesserung des Zugreckvorganges, der zu einer verbesserten Planheit des bearbeiteten Metallbandes führt.As will be seen later, this measure results in an improvement of the draw-stretching operation, which leads to an improved flatness of the machined metal strip.
Bevorzugt weist die in Bandförderrichtung nachfolgende Rolle der zweiten S- Rolleneinheit den größeren Durchmesser auf.The roll of the second S-roll unit following in the belt conveying direction preferably has the larger diameter.
Gemäß einer bevorzugten Ausführungsform hat die Vorrichtung fünf S- Rolleneinheiten mit je mindestens zwei Rollen. Dabei kann die in Bandförder- richtung vierte S-Rolleneinheit zwei Rollen aufweisen, deren Durchmesser un¬ terschiedlich groß ist. Ferner kann in diesem Falle die in Bandförderrichtung nachfolgende Rolle der vierten S-Rolleneinheit den kleineren Durchmesser aufweisen.According to a preferred embodiment, the device has five S-roll units each having at least two rollers. In this case, the fourth in the belt conveying direction S-roller unit may have two rollers whose diameter is un¬ different sized. Further, in this case, the subsequent in the band conveying direction role of the fourth S-roll unit have the smaller diameter.
Bevorzugt weist die im Durchmesser größere Rolle der S-Rolleneinheit mindes¬ tens den 1 ,25-fachen Durchmesser der im Durchmesser kleineren Rolle auf. Besonders bevorzugt hat die im Durchmesser größere Rolle der S-Rolleneinheit mindestens den 1 ,5-fachen Durchmesser, vorzugsweise den doppelten Durch¬ messer, der im Durchmesser kleineren Rolle.Preferably, the larger diameter roll of the S-roll unit has at least 1.25 times the diameter of the smaller diameter roll. Particularly preferably, the larger diameter roll of the S-roll unit has at least 1.5 times the diameter, preferably twice the diameter, of the smaller diameter roll.
Eine weitere Fortbildung sieht vor, dass die dritte Rolleneinheit zwei Rollen auf¬ weist, die einen Durchmesser haben, der dem Durchmesser der größeren Rolle der zweiten bzw. vierten Rolleneinheit entspricht. Weiterhin kann die erste und die fünfte Rolleneinheit je zwei Rollen aufweisen, die einen Durchmesser ha- ben, der dem Durchmesser der kleineren Rolle der zweiten bzw. vierten Rollen¬ einheit entspricht. In Bandförderrichtung hinter der ersten Rolleneinheit können Mittel zum Messen der im Metallband herrschenden Zugkraft angeordnet sein. Die in Bandförder¬ richtung zweite S-Rolleneinheit kann mit Mitteln zum Messen der durch die Rol¬ len auf das Metallband aufgebrachten Zugkraft ausgestattet sein. Weiterhin kann die in Bandförderrichtung vierte S-Rolleneinheit mit Mitteln zum Messen der durch die Rollen auf das Metallband aufgebrachten Zugkraft ausgestattet sein.A further development provides that the third roller unit has two rollers auf¬ having a diameter corresponding to the diameter of the larger roller of the second and fourth roller unit. Furthermore, the first and the fifth roller unit can each have two rollers which have a diameter which corresponds to the diameter of the smaller roller of the second or fourth roller unit. In the belt conveying direction behind the first roller unit means for measuring the tension prevailing in the metal band can be arranged. The second S-roll unit in the belt conveying direction can be equipped with means for measuring the tensile force applied by the rollers to the metal strip. Furthermore, the fourth in the belt conveying direction S-roller unit can be equipped with means for measuring the force applied by the rollers on the metal strip tensile force.
Ein vorteilhafter „Speedmaster"-Betrieb kann verwirklicht werden, wenn die in Bandförderrichtung vierte S-Rolleneinheit mit Messmitteln zum Messen der För¬ dergeschwindigkeit des Metallbandes ausgestattet ist, die mit einer Steuer- o- der Regeleinrichtung in Verbindung stehen, wobei die Steuer- oder Regelein¬ richtung die Antriebe zumindest eines Teils der S-Rolleneinheiten gemäß der ermittelten Fördergeschwindigkeit steuert oder regelt.An advantageous "Speedmaster" operation can be realized if the fourth in the belt conveying direction S-roller unit is equipped with measuring means for measuring the För¬ dergeschwindigkeit of the metal strip, which are connected to a control o- of the control device, wherein the control or Regelein¬ direction controls the drives of at least a portion of the S-roll units according to the determined conveying speed or regulates.
Das erfindungsgemäße Verfahren zum Betreiben der Zugreckvorrichtung ist dadurch gekennzeichnet, dass in der in Bandförderrichtung zweiten S- Rolleneinheit im Metallband eine Zugspannung aufgebaut wird, die zwischen 96 % und 100 % der Streckgrenze des Materials des Metallbandes liegt. Bevorzugt liegt die Zugspannung zwischen 96 % und 99,8 %, also knapp unter 100 %, der Streckgrenze des Materials.The method according to the invention for operating the draw-stretching device is characterized in that a tensile stress which is between 96% and 100% of the yield strength of the material of the metal strip is established in the second S-roll unit in the metal belt in the belt conveying direction. The tensile stress is preferably between 96% and 99.8%, ie just below 100%, of the yield strength of the material.
Vorzugsweise wird in einer Vorrichtung mit fünf S-Rolleneinheiten in der in Bandförderrichtung dritten S-Rolleneinheit im Metallband eine Zugspannung aufgebaut, die über 100 % der Streckgrenze des Materials des Metallbandes liegt.Preferably, in a device with five S-roll units in the belt conveyor in the third S-roll unit in the metal band, a tensile stress is built up which is more than 100% of the yield strength of the material of the metal strip.
Weiterhin kann vorgesehen werden, dass in der in Bandförderrichtung vierten S-Rolleneinheit im Metallband eine Zugspannung aufgebaut wird, die zwischen 96 % und 100 % der Streckgrenze des Materials des Metallbandes bzw. wieder knapp darunter (bis 99,8 % der Streckgrenze) liegt. Alternativ hierzu kann in der in Bandförderrichtung vierten S-Rolleneinheit im Metallband eine Zugspannung aufgebaut werden, die über 100 % der Streckgrenze des Materials des Metall¬ bandes liegt, wobei also das Metallband weiter plastisch verformt wird.Furthermore, it can be provided that in the band conveying direction fourth S-roll unit in the metal strip, a tensile stress is built up which is between 96% and 100% of the yield strength of the material of the metal strip or again just below (to 99.8% of the yield strength). Alternatively, in the In the band conveying direction fourth S-roller unit in the metal band, a tensile stress is built up which is more than 100% of the yield strength of the material of the metal band, in which case the metal band is further plastically deformed.
In der Zeichnung ist ein Ausführungsbeispiel der Erfindung dargestellt. Die ein- zige Figur zeigt nur sehr schematisch eine Vorrichtung zum Zugrecken eines Metallbandes in der Seitenansicht, wobei im Wesentlichen nur die zum Einsatz kommenden Rollen dargestellt sind.In the drawing, an embodiment of the invention is shown. The single figure only very schematically shows a device for drawing a metal strip in the side view, wherein essentially only the rollers used are shown.
In der in der Figur dargestellten Vorrichtung 1 zum Zugrecken wird ein Metall- band 2 bearbeitet, das ein dünnes Metallband sein kann. Bei dem Metallband kann es sich um ein solches aus Stahl, Edelstahl oder aus NE-Metall handeln. Typische Banddicken können zwischen 0,05 und 0,5 mm liegen.In the apparatus 1 for drawing shown in the figure, a metal band 2 is processed, which may be a thin metal band. The metal strip may be made of steel, stainless steel or non-ferrous metal. Typical tape thicknesses can be between 0.05 and 0.5 mm.
Die Vorrichtung 1 zum Zugrecken weist fünf hintereinander angeordnete S- Rolleneinheiten 3, 4, 5, 6 und 7 auf. Jede S-Rolleneinheit 3, 4, 5, 6, 7 hat zwei Rollen 8, 9, 10, 11 , 12, 13, 14, 15, 16 und 17, wobei die Rollen so angeordnet sind, dass der Metallstrang 2 sich über einen Rollenumfangswinkel α von min¬ destens 180° um die Rollen schlingt. Für die Rollen 8 und 11 ist der Rollenum¬ fangswinkel α exemplarisch eingetragen; er beträgt ca. 210°. Die Rollen sind antreibbar, so dass ein Bandzug auf den Metallstrang 2 aufgebracht werden kann.The device 1 for drawing has five successively arranged S-roll units 3, 4, 5, 6 and 7. Each S-roll unit 3, 4, 5, 6, 7 has two rollers 8, 9, 10, 11, 12, 13, 14, 15, 16 and 17, wherein the rollers are arranged so that the metal strand 2 over a Roll circumference angle α of at least 180 ° around the rolls. For the rollers 8 and 11, the roller circumferential angle α is entered as an example; it is about 210 °. The rollers are drivable, so that a strip tension can be applied to the metal strand 2.
Das Metallband2 durchläuft die Vorrichtung 1 in Bandförderrichtung R mit einer Fördergeschwindigkeit v.The metal strip 2 passes through the device 1 in the belt conveying direction R at a conveying speed v.
Der Bandzug wird einlaufseitig vom umgebenden Anlagenzugniveau über der ersten S-Rolleneinheit 3 erhöht. Hinter der S-Rolleneinheit 3 sind Mittel 18 zum Messen der Zugkraft im Metallband 2 angeordnet. Die Zugkraft hinter der S- Rolleneinheit 3 muss bekannt sein, um das Zugniveau für den weiteren kontrol- lierten Zugaufbau definieren und dann steuern bzw. regeln zu können. Die sich anschließende S-Rolleneinheit 4 weist die beiden Rollen 10 und 11 auf, die erheblich unterschiedliche Durchmesser aufweisen, nämlich die Durchmesser Di0 bzw. Du. Der Rollendurchmesser D10 kann ca. 600 mm betragen - Werte zwischen 400 mm und 800 mm sind typisch - , während der Durchmesser Du 1.200 mm betragen kann, wobei Werte zwischen 1.000 mm und 1.400 mm typisch sind. Die erste Rolle 10 der S-Rolleneinheit 4 hat dabei denselben Durchmesser wie die Rollen 8 und 9 der ersten S-Rolleneinheit 3.The strip tension is increased on the intake side by the surrounding system train level above the first S-roller unit 3. Behind the S-roller unit 3 means 18 for measuring the tensile force in the metal strip 2 are arranged. The tensile force behind the S-roller unit 3 must be known in order to be able to define the train level for the further controlled train construction and then to be able to control or regulate it. The adjoining S-roller unit 4 has the two rollers 10 and 11, which have significantly different diameters, namely the diameters Di 0 and Du. The roll diameter D 10 can be about 600 mm - values between 400 mm and 800 mm are typical - while the diameter Du can be 1,200 mm, whereby values between 1,000 mm and 1,400 mm are typical. The first roller 10 of the S-roller unit 4 has the same diameter as the rollers 8 and 9 of the first S-roller unit 3.
Ferner weist die zweite S-Rolleneinheit 4 Mittel 19 zum Messen der Zugkraft im Metallband 2 auf (Drehmomentenmessung). Der Bandzug, der zwischen den Rollen 10 und 11 durch entsprechende Ansteuerung der nicht dargestellten An¬ triebe der Rollen 10, 11 eingestellt wird, liegt auf einem solchen Niveau, dass rechnerisch noch keine Randfaserplastifizierung des zu reckenden Bandes ein¬ tritt. Die nachfolgende Rolle 11 der S-Rolleneinheit 4 weist den erheblich größe¬ ren Durchmesser Du auf, diese Rolle 11 baut den Bandzug auf ein Niveau von über 96 % bis knapp unter 100 % des Streckgrenzenzuges auf. Da der Rollen¬ radius endlich ist, ist eine Randfaserdehnung durch Biegung des Bandes nicht auszuschließen, jedoch durch die Dimensionierung des Durchmessers auf ein akzeptables Maß zu reduzieren.Furthermore, the second S-roll unit 4 has means 19 for measuring the tensile force in the metal strip 2 (torque measurement). The strip tension, which is set between the rollers 10 and 11 by corresponding actuation of the drives (not shown) of the rollers 10, 11, is at such a level that computationally no edge fiber plasticization of the strip to be stretched occurs. The following roll 11 of the S-roll unit 4 has the considerably larger diameter Du, this roll 11 builds the strip tension to a level of more than 96% to just below 100% of the yield stress. Since the Rollen¬ radius is finite, an edge fiber strain by bending the tape can not be excluded, but to reduce by the dimensioning of the diameter to an acceptable level.
Zwischen der Rolle 11 der zweiten S-Rolleneinheit 4 und der nachfolgenden Rolle 12 der dritten S-Rolleneinheit 5 befindet sich eine längere freie Bandstre¬ cke, auf der sich eine ungleichmäßige Spannungsverteilung über die Bandbrei¬ te durch die Zugerhöhung ausgleichen kann. An dieser Stelle können sich Spannungsspitzen durch Unplanheiten über Mikroplastifizierung ausgleichen, jedoch wird an dieser Stelle noch nicht der eigentliche Reckvorgang erzeugt.Between the roller 11 of the second S-roller unit 4 and the subsequent roller 12 of the third S-roller unit 5 is a longer free Bandstre¬ bridge on which a non-uniform stress distribution over the Bandbrei¬ te can compensate by the Zugerhöhung. At this point, stress peaks can be compensated by uncleannesses via microplastification, but the actual stretching process is not yet generated at this point.
Mit der nächsten in Bandförderrichtung R folgenden Rolle 12, die den selben großen Durchmesser Di2 wie die Rolle 11 hat, wird der Bandzug dann auf das für den gewünschten Reckgrad notwendige Niveau erhöht. Da das Ausgangs- niveau des Bandzuges bereits sehr hoch liegt, sind negative Einflüsse durch die auf der Rolle 12 behinderte Querkontraktion so gut wie ausgeschlossen. Aus diesem Grunde kann die Reckstrecke zwischen den Rollen 12 und 13 auch sehr kurz sein, da kein Spannungsausgleich notwendig ist.With the next following in the belt conveying direction R roller 12, which has the same large diameter Di 2 as the roller 11, the strip tension is then increased to the level necessary for the desired degree of stretching. Since the initial level of the strip tension is already very high, negative influences due to the lateral contraction blocked on the roller 12 are virtually eliminated. Out For this reason, the stretching distance between the rollers 12 and 13 can also be very short, since no voltage compensation is necessary.
Mit der sich anschließenden S-Rolleneinheit 6 besteht die Möglichkeit, entwe¬ der den Bandzug wieder auf ein Niveau zwischen 96 % bis knapp unter 100 % des Streckgrenzenzuges abzusenken und somit keine weitere Reckung aufzu¬ bringen. Es kann alternativ dazu auch vorgesehen werden, dass hier gezielt ein weiterer Reckgrad dem Metallband 2 auferlegt wird. Da die freie Abspannlänge zwischen den Rollen 13 und 14 wieder relativ groß ist, können sich die letzten Ungleichmäßigkeiten in der Spannungsverteilung abbauen.With the adjoining S-roller unit 6, it is possible either to lower the strip tension again to a level between 96% and just below 100% of the yield limit tension, and thus to impose no further stretching. As an alternative, it can also be provided that a further degree of stretching is intentionally imposed on the metal strip 2 here. Since the free guy length between the rollers 13 and 14 is again relatively large, the last unevenness in the stress distribution can be reduced.
Die S-Rolleneinheit 6 ist wieder mit einer im Durchmesser großen Rolle 14 und einer nachfolgenden kleinen Rolle 15 ausgeführt, wobei diese Rolleneinheit 6 spiegelbildlich zur S-Rolleneinheit 4 vor dem Zugreckrollenpaar 12, 13 ausge¬ bildet ist.The S-roll unit 6 is again designed with a large-diameter roll 14 and a subsequent small roll 15, wherein this roll unit 6 forms a mirror image of the S-roll unit 4 in front of the take-up roll pair 12, 13.
Für die Erfassung des Bandzuges sind auch in der S-Rolleneinheit 6 wieder Mittel 20 zum Messen der Zugkraft vorgesehen. Nach der im Durchmesser gro¬ ßen Rolle 14 der vierten S-Rolleneinheit 6 wird ein Bandzugniveau eingestellt, bei dem eine Plastifizierung des Metallbandes 2 bei Auflauf auf die dann fol- gende kleine Rolle 15 verhindert wird. Die kleine Rolle 15 stellt das Bandzugni¬ veau auf das für die folgende Bandzugmessung geforderte Niveau ein. Die Bandzugmessung erfolgt mit Mitteln 23 zum Messen der Zugkraft.For the detection of the strip tension means 20 for measuring the tensile force are also provided in the S-roller unit 6 again. After the large-diameter roll 14 of the fourth S-roll unit 6, a strip tension level is set at which plasticization of the metal strip 2 upon emergence onto the then following small roll 15 is prevented. The small roller 15 sets the Bandzugni¬ level to the level required for the following Bandzugmessung level. The tape tension measurement is carried out by means 23 for measuring the tensile force.
Die letzte, fünfte S-Rolleneinheit 7 entspricht wiederum spiegelbildlich der ers- ten S-Rolleneinheit 3 und weist Rollen 16, 17 auf, die denselben kleinen Rol¬ lendurchmesser aufweisen wie die Rollen 10 bzw. 15. Diese S-Rolleneinheit 7 senkt den Bandzug auf das für den sich anschließenden Anlagenteil gewünsch¬ te bzw. benötigte Niveau ab.The last, fifth S-roll unit 7 again corresponds in mirror image to the first S-roll unit 3 and has rollers 16, 17 which have the same small roller diameter as the rollers 10 or 15. This S-roll unit 7 lowers the strip tension to the desired or required for the subsequent part of the system from level.
An der vierten S-Rolleneinheit 6 sind Messmittel 21 angeordnet, die die Förder¬ geschwindigkeit v des Metallbandes 2 erfassen. Die Messmittel 21 leiten den gemessenen Wert an eine Steuer- oder Regeleinrichtung 22 weiter, die - was nur sehr schematisch dargestellt ist - auf die Antriebe der S-Rolleneinheiten 3, 4, 5, 6, 7 so einwirkt, dass eine gewünschte Geschwindigkeit erreicht wird. Die Rolle 14, an der vorliegend die Fördergeschwindigkeit bzw. Bandgeschwindig¬ keit gemessen wird, fungiert also als „Speedmaster" mit nachgeschaltetem ge- schwindigkeitsgeregelten Hauptantrieb der Rollen bzw. der Zugrollensätze.On the fourth S-roll unit 6 measuring means 21 are arranged, which detect the Förder¬ speed v of the metal strip 2. The measuring means 21 conduct the measured value to a control or regulating device 22 on which - which is shown only very schematically - on the drives of the S-roller units 3, 4, 5, 6, 7 acts so that a desired speed is achieved. The roller 14, on which the conveyor speed or belt speed is measured in the present case, thus functions as a "speed master" with a downstream, speed-controlled main drive of the rollers or of the traction roller sets.
Der Bandzug wird also vor dem Zugreckrollenpaar 12, 13 auf einem Niveau zwischen 96 % bis knapp unter 100 % des Streckgrenzenzuges gehalten; im Zugreckrollenpaar 12, 13 wird der für die Erreichung des eingestellten Reck- grades notwendige restliche Anteil des Bandzuges aufgebracht. Hinter dem Zugreckrollenpaar 12, 13 wird der Bandzug entweder wieder auf 96 % bis knapp unter 100 % des Streckgrenzenzuges abgesenkt oder der Bandzug wird zur Erreichung eines ergänzenden weiteren Reckgrades erhöht.The strip tension is therefore held in front of the Zugreckrollenpaar 12, 13 at a level between 96% to just below 100% of the yield limit; in zugreckrollenpaar 12, 13 of the necessary for the achievement of the set Reck- degree remaining portion of the strip tension is applied. Behind the Zugreckrollenpaar 12, 13 of the strip tension is either lowered again to 96% to just below 100% of the yield limit train or the strip tension is increased to achieve a complementary further degree of stretching.
Die letzte Rolle 11 der S-Rolleneinheit 4 (Bremsrollengang) vor dem Zugreck¬ rollenpaar 12, 13 und die erste Rolle 14 der nachfolgenden S-Rolleneinheit 6 (Zugrollengang) haben denselben Durchmesser wie die beiden Rollen 12, 13 der S-Rolleneinheit 5. Dieser Durchmesser ist - wie erläutert - wesentlich grö¬ ßer als der Durchmesser der restlichen Rollen 8, 9, 10, 15, 16 und 17, die alle den selben Durchmesser aufweisen.The last roller 11 of the S-roller unit 4 (brake roller guide) in front of the Zugreck¬ roller pair 12, 13 and the first roller 14 of the subsequent S-roller unit 6 (Zugrollengang) have the same diameter as the two rollers 12, 13 of the S-roller unit fifth As explained, this diameter is substantially greater than the diameter of the remaining rollers 8, 9, 10, 15, 16 and 17, which all have the same diameter.
Der Bandzug in der S-Rolleneinheit 4 vor der S-Rolleneinheit 5 (Zugreck¬ rolleneinheit) und in der S-Rolleneinheit 6 nach diesem wird mittels Bandzug¬ messung und Drehmomentenmessung an den Rollen so eingestellt, dass an der kleineren der beiden in der S-Rolleneinheit 4 bzw. 6 installierten Rolle 10 bzw. 15 rechnerisch keine Randfaserplastifizierung stattfindet.The strip tension in the S-roller unit 4 in front of the S-roller unit 5 (tension roller unit) and in the S-roller unit 6 after this is adjusted by means of Bandzug¬ measurement and torque measurement on the rollers so that at the smaller of the two in the S Roll unit 4 and 6 installed roll 10 and 15 computationally no edge fiber plasticization takes place.
Im Ausführungsbeispiel hat das Metallband 2 zwischen den beiden Rollen 10 und 11 eine Spannung von ca. 55 bis 70 % der Streckgrenze des Materials. Zwischen den Rollen 11 und 12 herrscht, wie oben dargestellt, eine Zugspan¬ nung zwischen 96 % bis knapp unter 100 % der Streckgrenze vor; dieser Be- reich ist die Vorreckzone. Die erste Hauptreckzone befindet sich zwischen den Walzen 12 und 13. Die zweite Hauptreckzone ist der Abschnitt zwischen den Rollen 13 und 14, wo zumeist wieder eine Zugspannung zwischen 96 % bis knapp unter 100 % der Streckgrenze vorliegt. Zwischen den Rollen 14 und 15 liegt wieder - spiegelbildlich - eine Zugspannung von ca. 55 bis 70 % der Streckgrenze des Materials vor. In the exemplary embodiment, the metal strip 2 between the two rollers 10 and 11 has a tension of about 55 to 70% of the yield strength of the material. Between the rollers 11 and 12, as shown above, a tensile stress prevails between 96% to just below 100% of the yield strength; this rich is the Vorreckzone. The first main stretching zone is between the rolls 12 and 13. The second main stretching zone is the section between the rolls 13 and 14, where again usually a tensile stress of between 96% to just below 100% of the yield strength. Between the rollers 14 and 15 is again - mirror image - a tensile stress of about 55 to 70% of the yield strength of the material before.
BezugszeichenlisteLIST OF REFERENCE NUMBERS
1 Vorrichtung zum Zugrecken1 device for stretching
2 Metallband2 metal band
3 S-Rolleneinheit3 S-roll unit
4 S-Rolleneinheit4 S-roll unit
5 S-Rolleneinheit5 S-roll unit
6 S-Rolleneinheit6 S-roll unit
7 S-Rolleneinheit7 S-roll unit
8 Rolle8 roll
9 Rolle9 roll
10 Rolle10 roll
11 Rolle11 roll
12 Rolle12 roll
13 Rolle13 roll
14 Rolle14 roll
15 Rolle15 roll
16 Rolle16 roll
17 Rolle17 roll
18 Mittel zum Messen der Zugkraft18 means for measuring the tensile force
19 Mittel zum Messen der Zugkraft19 means for measuring the tensile force
20 Mittel zum Messen der Zugkraft20 means for measuring the tensile force
21 Messmittel21 measuring equipment
22 Steuer- oder Regeleinrichtung22 control or regulating device
23 Mittel zum Messen der Zugkraft R Bandförderrichtung α Rollenumfangswinkel23 means for measuring the tensile force R Belt conveying direction α Roll circumferential angle
D8 Durchmesser der Rolle 8D 8 diameter of the roller 8
D9 Durchmesser der Rolle 9D 9 diameter of the roller 9
D10 Durchmesser der Rolle 10D10 diameter of the roll 10
Dn Durchmesser der Rolle 11Dn diameter of the roll 11
D12 Durchmesser der Rolle 12D 12 diameter of the roll 12
D13 Durchmesser der Rolle 13D13 diameter of the roller 13
D14 Durchmesser der Rolle 14D14 diameter of the roller 14
D15 Durchmesser der Rolle 15D15 diameter of the roller 15
D16 Durchmesser der Rolle 16D 16 diameter of the roller 16
D17 Durchmesser der Rolle 17D 17 diameter of the roll 17
V Fördergeschwindigkeit V conveying speed

Claims

Patentansprüche claims
1. Vorrichtung (1 ) zum kontinuierlichen Zugrecken eines Metallbandes(2), die in Bandförderrichtung (R) mindestens drei S-Rolleneinheiten (3, 4, 5, 6, 7) mit je mindestens zwei Rollen (8, 9, 10, 11 , 12, 13, 14, 15, 16, 17) aufweist, wobei die Rollen (8, 9, 10, 11 , 12, 13, 14, 15, 16, 17) so positi¬ oniert sind, dass sie vom Metallband (2) über einen Rollenumfangswinkel (α) von mehr als 180° umschlungen werden, dadurch gekennzeichnet, dass zumindest die in Bandförderrichtung (R) zweite S-Rolleneinheit (4) zwei Rollen (10, 11 ) aufweist, deren Durchmesser (Di0, Du) unterschied¬ lich groß ist.1. Device (1) for continuously drawing a metal strip (2), in the belt conveying direction (R) at least three S-roller units (3, 4, 5, 6, 7), each having at least two rollers (8, 9, 10, 11 , 12, 13, 14, 15, 16, 17), wherein the rollers (8, 9, 10, 11, 12, 13, 14, 15, 16, 17) are so positi¬ on that they from the metal strip ( 2) are wrapped over a roll circumferential angle (α) of more than 180 °, characterized in that at least in the belt conveying direction (R) second S-roll unit (4) has two rollers (10, 11) whose diameter (Di 0 , you ) is different in size.
2. Vorrichtung nach Anspruch 1 , dadurch gekennzeichnet, dass die in Bandförderrichtung (R) nachfolgende Rolle (11 ) der zweiten S- Rolleneinheit (4) den größeren Durchmesser (Du) aufweist.2. Apparatus according to claim 1, characterized in that in the belt conveying direction (R) subsequent roller (11) of the second S-roll unit (4) has the larger diameter (Du).
3. Vorrichtung nach Anspruch 1 oder 2, dadurch gekennzeichnet, dass sie fünf S-Rolleneinheiten (3, 4, 5, 6, 7) mit je mindestens zwei Rollen (8, 9, 10, 11 , 12, 13, 14, 15, 16, 17) aufweist.3. Apparatus according to claim 1 or 2, characterized in that it comprises five S-roller units (3, 4, 5, 6, 7), each having at least two rollers (8, 9, 10, 11, 12, 13, 14, 15 , 16, 17).
4. Vorrichtung nach Anspruch 3, dadurch gekennzeichnet, dass die in Bandförderrichtung (R) vierte S-Rolleneinheit (6) zwei Rollen (14, 15) aufweist, deren Durchmesser (Du, Di5) unterschiedlich groß ist.4. Apparatus according to claim 3, characterized in that in the band conveying direction (R) fourth S-roll unit (6) has two rollers (14, 15) whose diameter (Du, Di 5 ) is different in size.
5. Vorrichtung nach Anspruch 4, dadurch gekennzeichnet, dass die in Bandförderrichtung (R) nachfolgende Rolle (15) der vierten S- Rolleneinheit (6) den kleineren Durchmesser (Di5) aufweist. 6. Vorrichtung nach einem der Ansprüche 1 bis 5, dadurch gekennzeichnet, dass die im Durchmesser größere Rolle (11 , 14) der S-Rolleneinheit (4, 5. Apparatus according to claim 4, characterized in that in the band conveying direction (R) subsequent roller (15) of the fourth S-roll unit (6) has the smaller diameter (Di 5 ). 6. Device according to one of claims 1 to 5, characterized in that the larger diameter roller (11, 14) of the S-roll unit (4,
6) mindestens den 1 ,25-fachen Durchmesser der im Durchmesser klei¬ neren Rolle (10, 15) aufweist.6) has at least 1.25 times the diameter of the smaller diameter roller (10, 15).
7. Vorrichtung nach Anspruch 6, dadurch gekennzeichnet, dass die im7. Apparatus according to claim 6, characterized in that in the
Durchmesser größere Rolle (11 , 14) der S-Rolleneinheit (4, 6) mindes¬ tens den 1 ,5-fachen Durchmesser, vorzugsweise den doppelten Durch¬ messer, der im Durchmesser kleineren Rolle (10, 15) aufweist.Diameter larger role (11, 14) of the S-roll unit (4, 6) at least the 1.5 times the diameter, preferably twice the Durch¬ diameter, the smaller diameter roller (10, 15).
8. Vorrichtung nach einem der Ansprüche 3 bis 7, dadurch gekennzeichnet, dass die dritte Rolleneinheit (5) zwei Rollen (12, 13) aufweist, die einen Durchmesser (Di2, D13) haben, der dem Durchmesser (Du, D14) der grö¬ ßeren Rolle (11 , 14) der zweiten bzw. vierten Rolleneinheit (4, 6) ent¬ spricht.8. Device according to one of claims 3 to 7, characterized in that the third roller unit (5) has two rollers (12, 13) having a diameter (Di 2 , D 1 3), the diameter (Du, D 14 ) of the larger roller (11, 14) of the second or fourth roller unit (4, 6) corresponds.
9. Vorrichtung nach einem der Ansprüche 3 bis 8, dadurch gekennzeichnet, dass die erste und die fünfte Rolleneinheit (3, 7) je zwei Rollen (8, 9, 16, 17) aufweist, die einen Durchmesser (De, Dg, D16, D17) haben, der dem Durchmesser (D10, D15) der kleineren Rolle (10, 15) der zweiten bzw. vierten Rolleneinheit (4, 6) entspricht.9. Device according to one of claims 3 to 8, characterized in that the first and the fifth roller unit (3, 7) each have two rollers (8, 9, 16, 17) having a diameter (De, Dg, D 16 , D 17 ) corresponding to the diameter (D 10 , D 15 ) of the smaller roller (10, 15) of the second and fourth roller unit (4, 6).
10. Vorrichtung nach einem der Ansprüche 1 bis 9, dadurch gekennzeichnet, dass in Bandförderrichtung (R) hinter der ersten Rolleneinheit (3) Mittel (18) zum Messen der im Metallband (2) herrschenden Zugkraft angeord- net sind.10. Device according to one of claims 1 to 9, characterized in that in the belt conveying direction (R) behind the first roller unit (3) means (18) for measuring the in the metal strip (2) prevailing tensile force are net.
11. Vorrichtung nach einem der Ansprüche 1 bis 10, dadurch gekennzeich¬ net, dass die in Bandförderrichtung (R) zweite S-Rolleneinheit (4) mit Mit¬ teln (19) zum Messen der durch die Rollen (10, 11 ) auf das Metallband (2) aufgebrachte Zugkraft ausgestattet ist. 11. Device according to one of claims 1 to 10, characterized gekennzeich¬ net, that in the belt conveying direction (R) second S-roll unit (4) with means (19) for measuring by the rollers (10, 11) on the Metal band (2) applied tensile force is equipped.
12. Vorrichtung nach einem der Ansprüche 3 bis 10, dadurch gekennzeich¬ net, dass die in Bandförderrichtung (R) vierte S-Rolleneinheit (6) mit Mit¬ teln (20) zum Messen der durch die Rollen (14, 15) auf das Metallband (2) aufgebrachten Zugkraft ausgestattet ist.12. Device according to one of claims 3 to 10, characterized gekennzeich¬ net, that in the belt conveying direction (R) fourth S-roll unit (6) with means (20) for measuring the by the rollers (14, 15) on the Metal band (2) applied tensile force is equipped.
13. Vorrichtung nach einem der Ansprüche 3 bis 12, dadurch gekenn¬ zeichnet, dass die in Bandförderrichtung (R) vierte S-Rolleneinheit (6) mit Messmitteln (21) zum Messen der Fördergeschwindigkeit (v) des Metall¬ bandes (2) ausgestattet ist, die mit einer Steuer- oder Regeleinrichtung (22) in Verbindung stehen, wobei die Steuer- oder Regeleinrichtung (22) die Antriebe zumindest eines Teils der S-Rolleneinheiten (3, 4, 5, 6, 7) gemäß der ermittelten Fördergeschwindigkeit (v) steuert oder regelt.13. Device according to one of claims 3 to 12, characterized gekenn¬ characterized in that in the belt conveying direction (R) fourth S-roll unit (6) equipped with measuring means (21) for measuring the conveying speed (v) of the Metall¬ band (2) which are in communication with a control or regulating device (22), wherein the control device (22) controls the drives of at least part of the S-roller units (3, 4, 5, 6, 7) according to the determined conveying speed ( v) controls or regulates.
14. Verfahren zum Betreiben einer Vorrichtung (1) zum kontinuierlichen Zug¬ recken eines Metallbandes (2), die in Bandförderrichtung (R) mindestens drei S-Rolleneinheiten (3, 4, 5, 6, 7) mit je mindestens zwei Rollen (8, 9,14. A method for operating a device (1) for the continuous tensile stretching of a metal strip (2), in the belt conveying direction (R) at least three S-roll units (3, 4, 5, 6, 7), each having at least two rollers (8 , 9,
10, 11 , 12, 13, 14, 15, 16, 17) aufweist, insbesondere nach einem der Ansprüche 1 bis 13, dadurch gekennzeichnet, dass in der in Bandförder¬ richtung (R) zweiten S-Rolleneinheit (4) im Metallband (2) eine Zugspan¬ nung aufgebaut wird, die zwischen 96 % und 100 % der Streckgrenze des Materials des Metallsbandes (2) liegt.10, 11, 12, 13, 14, 15, 16, 17), in particular according to one of claims 1 to 13, characterized in that in the Bandförder¬ direction (R) second S-roll unit (4) in the metal strip ( 2) a tensile stress is built up which lies between 96% and 100% of the yield strength of the material of the metal strip (2).
15. Verfahren nach Anspruch 14, dadurch gekennzeichnet, dass in einer Vorrichtung mit fünf S-Rolleneinheiten (3, 4, 5, 6, 7) in der in Bandförder¬ richtung (R) dritten S-Rolleneinheit (5) im Metallband (2) eine Zugspan- nung aufgebaut wird, die über 100 % der Streckgrenze des Materials des15. The method according to claim 14, characterized in that in a device with five S-roller units (3, 4, 5, 6, 7) in the Bandförder¬ direction (R) third S-roll unit (5) in the metal strip (2 ) a tensile stress is built up that exceeds 100% of the yield strength of the material of the
Metallbandes (2) liegt.Metal band (2) is located.
16. Verfahren nach Anspruch 15, dadurch gekennzeichnet, dass in der in Bandförderrichtung (R) vierten S-Rolleneinheit (6) im Metallband (2) eine Zugspannung aufgebaut wird, die zwischen 96 % und 100 % der Streck¬ grenze des Materials des Metallbandes (2) liegt. 1016. The method according to claim 15, characterized in that in the band conveying direction (R) fourth S-roll unit (6) in the metal strip (2) a tensile stress is built up, which is between 96% and 100% of the Streck¬ limit of the material of the metal strip (2) lies. 10
17. Verfahren nach Anspruch 15, dadurch gekennzeichnet, dass in dem in Bandförderrichtung (R) vierten S-Rolleneinheit (6) im Metallband (2) eine Zugspannung aufgebaut wird, die über 100 % der Streckgrenze des Ma¬ terials des Metallbandes (2) liegt. 17. The method according to claim 15, characterized in that in the band conveying direction (R) fourth S-roll unit (6) in the metal strip (2) a tensile stress is built up over 100% of the yield strength of the Ma¬ terials of the metal strip (2) lies.
EP05793007.5A 2004-10-06 2005-09-19 Device for the continuous lengthening of a metal strip by traction Not-in-force EP1796858B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
PL05793007T PL1796858T3 (en) 2004-10-06 2005-09-19 Device for the continuous lengthening of a metal strip by traction, and method for operating one such device

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102004048658A DE102004048658A1 (en) 2004-10-06 2004-10-06 Apparatus for continuous drawing of a metal strip and method for operating such a device
PCT/EP2005/010078 WO2006037456A1 (en) 2004-10-06 2005-09-19 Device for the continuous lengthening of a metal strip by traction, and method for operating one such device

Publications (3)

Publication Number Publication Date
EP1796858A1 true EP1796858A1 (en) 2007-06-20
EP1796858B1 EP1796858B1 (en) 2008-07-23
EP1796858B2 EP1796858B2 (en) 2014-11-19

Family

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Application Number Title Priority Date Filing Date
EP05793007.5A Not-in-force EP1796858B2 (en) 2004-10-06 2005-09-19 Device for the continuous lengthening of a metal strip by traction

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US (1) US20080047314A1 (en)
EP (1) EP1796858B2 (en)
JP (1) JP2008515637A (en)
KR (1) KR20070051830A (en)
CN (1) CN100531949C (en)
AT (1) ATE401975T1 (en)
AU (1) AU2005291607A1 (en)
BR (1) BRPI0514028A (en)
CA (1) CA2574710A1 (en)
DE (2) DE102004048658A1 (en)
ES (1) ES2308552T3 (en)
MX (1) MX2007004092A (en)
MY (1) MY139051A (en)
PL (1) PL1796858T3 (en)
RU (1) RU2344894C2 (en)
TW (1) TWI332867B (en)
WO (1) WO2006037456A1 (en)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102008045340A1 (en) * 2008-09-01 2010-03-04 Siemens Aktiengesellschaft Operating method for a drafting jig with superimposed elongation control and subordinate tension control
US9221088B2 (en) * 2009-04-21 2015-12-29 Fairmont Technologies, Llc Stretch roll forming
FR3027920B1 (en) * 2014-10-29 2019-03-29 Fives Stein METHOD FOR ORIENTING STEEL SHEET GRAINS, DEVICE THEREFOR, AND INSTALLATION USING SAID METHOD OR DEVICE

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DE2118051C3 (en) * 1971-04-14 1975-10-23 Ungerer Geb. Dollinger, Irma, 7530 Pforzheim Stretch straightener
US3798951A (en) * 1972-10-03 1974-03-26 Herr Voss Corp Torque distribution system
JPS6120622A (en) * 1984-07-10 1986-01-29 Mitsubishi Heavy Ind Ltd Controlling method of tension leveler
DE3636707A1 (en) † 1986-10-28 1988-05-19 Bwg Bergwerk Walzwerk Apparatus for the stretch-bend-straightening of metal strips
DE3912676A1 (en) * 1989-04-18 1990-10-25 Bwg Bergwerk Walzwerk METHOD AND DEVICE FOR CONTINUOUSLY REACHING THIN BANDS, ESPECIALLY METAL BANDS
US5497817A (en) * 1992-05-25 1996-03-12 Nippon Steel Corporation Method for continuously annealing steel strip
DE19645599A1 (en) † 1996-11-06 1998-05-07 Kampf Gmbh & Co Maschf Device for stretching thin metal strips
DE10114883C1 (en) † 2001-03-26 2002-10-31 Bwg Bergwerk Walzwerk Train stretching system for steel and metal strips
DE10323811A1 (en) † 2003-05-23 2005-01-13 Bwg Bergwerk- Und Walzwerk-Maschinenbau Gmbh Method for the continuous drawing of metallic strips and drawstring line

Non-Patent Citations (1)

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Title
See references of WO2006037456A1 *

Also Published As

Publication number Publication date
CN100531949C (en) 2009-08-26
PL1796858T3 (en) 2009-01-30
MX2007004092A (en) 2007-08-07
EP1796858B1 (en) 2008-07-23
DE502005004833D1 (en) 2008-09-04
CA2574710A1 (en) 2006-04-13
RU2007103836A (en) 2007-08-10
JP2008515637A (en) 2008-05-15
RU2344894C2 (en) 2009-01-27
US20080047314A1 (en) 2008-02-28
MY139051A (en) 2009-08-28
ATE401975T1 (en) 2008-08-15
AU2005291607A1 (en) 2006-04-13
WO2006037456A1 (en) 2006-04-13
BRPI0514028A (en) 2008-05-27
ES2308552T3 (en) 2008-12-01
EP1796858B2 (en) 2014-11-19
KR20070051830A (en) 2007-05-18
TW200621395A (en) 2006-07-01
DE102004048658A1 (en) 2006-04-20
CN101018625A (en) 2007-08-15
TWI332867B (en) 2010-11-11

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