EP1796858B2 - Device for the continuous lengthening of a metal strip by traction - Google Patents

Device for the continuous lengthening of a metal strip by traction Download PDF

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Publication number
EP1796858B2
EP1796858B2 EP05793007.5A EP05793007A EP1796858B2 EP 1796858 B2 EP1796858 B2 EP 1796858B2 EP 05793007 A EP05793007 A EP 05793007A EP 1796858 B2 EP1796858 B2 EP 1796858B2
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EP
European Patent Office
Prior art keywords
roller
diameter
rollers
metal strip
strip
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EP05793007.5A
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German (de)
French (fr)
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EP1796858B1 (en
EP1796858A1 (en
Inventor
Andreas Gramer
Hans-Georg Hartung
Holger Behrens
Jan Christoph HÄUSLER
Fritz Luckmann
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SMS Siemag AG
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SMS Siemag AG
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Priority to PL05793007T priority Critical patent/PL1796858T3/en
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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 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 wrapped by the metal strip over a circumferential roll angle of more than 180 °.
  • a device for drawing a metal strip and an associated method for its operation is known from EP 0 393 301 B2 known.
  • the metal strip to be stretched passes through five successively arranged roller units, 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 0.2 ) 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 generated in a second, downstream in the conveying direction of the metal strip Werreck Scheme.
  • the strip tension for the elastic deformation of the strip is applied between a brake roller set and a pull roller set. In an intermediate pair of take-up rollers, the strip tension is generated for the plastic deformation of the strip.
  • the DE 21 18 051 A1 discloses a drafting equipment provided with S-roll restraints having a stretch-rate adjustment gear and an S-roll drawbar. In this case, rolls of the same diameter are driven by a common drive motor.
  • the invention is therefore based on the object to provide a drafting device of the type mentioned, with which the draft stretching process can be further improved.
  • 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 device has five S-roller units each having at least two rollers.
  • the fourth in the belt conveying direction S-roller unit on two rollers whose diameter is of different sizes.
  • the subsequent in the band conveying direction role of the fourth S-roll unit on the smaller diameter is of different sizes.
  • the third roller unit has two rollers which have a diameter which corresponds to the diameter of the larger roller of the second or fourth reel unit corresponds. Furthermore, the first and the fifth roller unit each have two rollers, which have a diameter corresponding to the diameter of the smaller roller of the second and fourth roller unit.
  • the second S-roll unit in the belt conveying direction may be provided with means for measuring the tension applied by the rollers to the metal belt.
  • 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.
  • An advantageous "Speedmaster" operation can be realized when the fourth in the belt conveying direction S-roller unit is equipped with measuring means for measuring the conveying speed of the metal strip, which are in communication with a control or regulating device, wherein the control or regulating the drives at least a part of the S-roll units according to the determined conveying speed controls or regulates.
  • a method for operating the draw-stretching device which is not the subject of the claimed invention, is designed so that in the band-conveying direction second 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.
  • 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 can be established which is more than 100% of the yield strength of the material of the metal strip, so that the metal strip is further plastically deformed.
  • FIG. 1 an embodiment of the invention is shown.
  • the single figure shows only very schematically a device for drawing a metal strip in the side view, wherein substantially only the rollers used are shown.
  • a metal strip 2 is processed, which may be a thin metal strip.
  • 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 stretching has five successively arranged S-roller tracks 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 roll 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 define the train level for the further controlled train construction and then to be able to control or regulate.
  • the subsequent S-roll unit 4 has the two rollers 10 and 11, which have significantly different diameters, namely the diameter D 10 and D 11th
  • the roll diameter D 10 can be about 600 mm - values between 400 mm and 800 mm are typical - while the diameter D 11 can be 1,200 mm, with values between 1,000 mm and 1,400 mm being 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 tape tension which is set between the rollers 10 and 11 by appropriate control of the drives of the rollers 10, 11, not shown, is at such a level that mathematically no Randfaserplastization the strip to be stretched occurs.
  • the following roll 11 of the S-roll unit 4 has the considerably larger diameter D 11 , this roll 11 builds the strip tension to a level of over 96% to just below 100% of the yield stress. Since the roller radius is finite, a marginal fiber strain can not be excluded by bending the band, but to reduce by the dimensioning of the diameter to an acceptable level.
  • 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 roll 12 are virtually eliminated. For this reason, the stretching distance between the rollers 12 and 13 can also be very short, since no voltage compensation is necessary.
  • 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 is mirror-inverted to the S-roll stand 4 before the Switzerlandreckrollenpress 12, 13 is formed.
  • the strip tension means 20 for measuring the tensile force are also provided in the S-roller unit 6 again.
  • a Bandzugi is set, in which a plasticization of the metal strip 2 is prevented at casserole on the then following small role 15.
  • the small roller 15 sets the tape tension level to that for the following level measurement required 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 roll diameter as the rollers 10 and 15. This S-roll unit 7 lowers the tape tension to that for the subsequent plant part desired or required level.
  • measuring means 21 are arranged, which detect the conveying speed v of the metal strip 2.
  • the measuring means 21 forward the measured value to a control or regulating device 22, which - which is shown only very schematically - on the drives of the S-roller unit 3, 4, 5, 6, 7 acts so that a desired speed is achieved .
  • the roller 14, on which the conveying 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 Switzerlandreckrollencru 12, 13 of the necessary for the achievement of the set degree of stretching 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 Switzerlandreckrollenschreib 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 5. This diameter is - as explained - much larger 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 area is the pre-stretch zone.
  • 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)
  • Treatment Of Fiber Materials (AREA)
  • Registering, Tensioning, Guiding Webs, And Rollers Therefor (AREA)
  • Replacement Of Web Rolls (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

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° umschlungen werden.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 wrapped by the metal strip over a circumferential roll angle of more than 180 °.

Eine Vorrichtung zum Zugrecken eines Metallbandes sowie ein zugehöriges Verfahren zu deren Betrieb ist aus der EP 0 393 301 B2 bekannt. Das zu streckende Metallband durchläuft hier fünf hintereinander angeordnete Rolleneinheiten, die den Metallstrang S-förmig umschlingen und durch entsprechenden Antrieb der Rollen der Rolleneinheiten eine Zugspannung im Metallband aufbauen 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 known. Here, the metal strip to be stretched passes through five successively arranged roller units, 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 (σp 0,2) 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 Förderrichtung des Metallbandes nachgeordneten Zugreckbereich erzeugt. Durch die Aufteilung der Zugreckung in zwei Bereiche wird das Planheitsergebnis im Metallband nach dem Zugrecken verbessert.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 0.2 ) 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 generated in a second, downstream in the conveying direction of the metal strip Zugreckbereich. By dividing the Elongation in two areas improves the flatness result in the metal strip after drawing.

Bei der Lösung gemäß der genannten EP 0 393 301 B2 wird dabei zwischen einem Bremsrollensatz und einem Zugrollensatz der Bandzug für die elastische Verformung des Bandes aufgebracht. In einem dazwischen angeordneten Zugreckrollenpaar wird der Bandzug für die plastische Verformung des Bandes erzeugt.In the solution according to said EP 0 393 301 B2 In this case, the strip tension for the elastic deformation of the strip is applied between a brake roller set and a pull roller set. In an intermediate pair of take-up rollers, the strip tension is generated for the plastic deformation of the strip.

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 Zugrollensatz gebildet werden.From the EP 0 936 954 B1 a drawstring is known in which the two stretching zones between a brake roller and a centrally disposed stretching roller and between this stretching roller and a downstream Zugrollensatz are formed.

Aus der EP 1 245 301 A2 ist weiterhin eine Anlage bekannt, bei der die beiden Reckzonen zwischen dem Bremsrollensatz und einer angetriebenen Rolle sowie 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 the EP 1 245 301 A2 Furthermore, a system is known in which the two stretching zones are formed between the brake roller set and a driven roller and between this roller and the Zugrollensatz. 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.

Die DE 21 18 051 A1 offenbart eine Streckrichtanlage, die mit S-Walzen-Rückhaltegerüsten versehen ist und ein Reckgrad-Einstellgetriebe sowie ein S-Walzen-Zuggerüst aufweist. Dabei werden Walzen mit gleichem Durchmesser von einem gemeinsamen Antriebsmotor angetrieben.The DE 21 18 051 A1 discloses a drafting equipment provided with S-roll restraints having a stretch-rate adjustment gear and an S-roll drawbar. In this case, rolls of the same diameter are driven by a common drive motor.

Schließlich ist aus der DE 36 36 707 C2 eine Zugreckanlage für ein Metallband bekannt, bei der die planheitsverbessernde Wirkung durch Streckung des Bandes mittels einer in der Richtung wechselnde Biegung unter Zug um kleine Rollen erreicht wird.Finally, out of the DE 36 36 707 C2 a Zugreckanlage for a metal strip is known in which the flatness-improving effect is achieved by stretching the tape by means of a direction-changing bending under train to small roles.

Wenngleich die vorbekannten Vorrichtungen zum Zugrecken eines Metallbandes sowie die vorbekannten Verfahren bereits das Erhöhen des Planheitsgrades eines Metallbandes erlauben, besteht das Bedürfnis, weiter verbesserte Anlagen und Verfahren zu schaffen, mit der das Metallband noch effizienter dem Zugreckvorgang unterzogen werden kann. Es ist eine Vorrichtung mit den Merkmalen des Oberbegriffs des Anspruchs 1 bekannt.Although the prior art devices for drawing a metal strip as well as the prior art methods already allow to increase the degree of flatness of a metal strip, there is a need to provide further improved equipment and methods with which the metal strip can be subjected to the draw stretching process even more efficiently. It is a device having the features of the preamble of claim 1 is known.

Der Erfindung liegt daher die Aufgabe zugrunde, eine Zugreckvorrichtung der eingangs genannten Art zu schaffen, mit der der Zugreckvorgang weiter verbessert werden kann.The invention is therefore based on the object to provide a drafting device of the type mentioned, with which the draft stretching process can be further improved.

Die Lösung dieser Aufgabe wird durch eine Vorrichtung mit den Merkmalen des Anspruchs 1 erbracht.The solution to this problem is provided by a device having the features of claim 1.

Bevorzugt ist vorgesehen, dass die im Durchmesser größere Rolle der S-Rolleneinheit mindestens den 1,5-fachen Durchmesser, vorzugsweise den doppelten Durchmesser, der im Durchmesser kleineren Rolle aufweist.It is preferably provided that 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.

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.

Gemäß der Erfindung hat die Vorrichtung fünf S-Rolleneinheiten mit je mindestens zwei Rollen. Dabei weist die in Bandförderrichtung vierte S-Rolleneinheit zwei Rollen auf, deren Durchmesser unterschiedlich groß ist. Ferner weist in diesem Falle die in Bandförderrichtung nachfolgende Rolle der vierten S-Rolleneinheit den kleineren Durchmesser auf.According to the invention, the device has five S-roller units each having at least two rollers. In this case, the fourth in the belt conveying direction S-roller unit on two rollers whose diameter is of different sizes. Further, in this case, the subsequent in the band conveying direction role of the fourth S-roll unit on the smaller diameter.

Die Erfindung sieht vor, dass die dritte Rolleneinheit zwei Rollen aufweist, die einen Durchmesser haben, der dem Durchmesser der größeren Rolle der zweiten bzw. vierten Rolleneinheit entspricht. Weiterhin weist die erste und die fünfte Rolleneinheit je zwei Rollen auf, die einen Durchmesser haben, der dem Durchmesser der kleineren Rolle der zweiten bzw. vierten Rolleneinheit entspricht.The invention provides that the third roller unit has two rollers which have a diameter which corresponds to the diameter of the larger roller of the second or fourth reel unit corresponds. Furthermore, the first and the fifth roller unit each have two rollers, which have a diameter corresponding to the diameter of the smaller roller of the second and fourth roller unit.

In Bandförderrichtung hinter der ersten Rolleneinheit können Mittel zum Messen der im Metallband herrschenden Zugkraft angeordnet sein. Die in Bandförderrichtung zweite S-Rolleneinheit kann mit Mitteln zum Messen der durch die Rollen 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.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 may be provided with means for measuring the tension applied by the rollers to the metal belt. 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 Fördergeschwindigkeit des Metallbandes ausgestattet ist, die mit einer Steuer- oder Regeleinrichtung in Verbindung stehen, wobei die Steuer- oder Regeleinrichtung die Antriebe zumindest eines Teils der S-Rolleneinheiten gemäß der ermittelten Fördergeschwindigkeit steuert oder regelt.An advantageous "Speedmaster" operation can be realized when the fourth in the belt conveying direction S-roller unit is equipped with measuring means for measuring the conveying speed of the metal strip, which are in communication with a control or regulating device, wherein the control or regulating the drives at least a part of the S-roll units according to the determined conveying speed controls or regulates.

Ein Verfahren zum Betreiben der Zugreckvorrichtung, das nicht Gegenstand der beanspruchten Erfindung ist, ist so ausgestaltet, 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.A method for operating the draw-stretching device, which is not the subject of the claimed invention, is designed so that in the band-conveying direction second 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. 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 Metallbandes 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 band conveying direction in the fourth S-roll unit in the metal strip, a tensile stress can be established which is more than 100% of the yield strength of the material of the metal strip, so that the metal strip is further plastically deformed.

In der Zeichnung ist ein Ausführungsbeispiel der Erfindung dargestellt. Die einzige 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 shows only very schematically a device for drawing a metal strip in the side view, wherein substantially only the rollers used are shown.

In der in der Figur dargestellten Vorrichtung 1 zum Zugrecken wird ein Metallband 2 bearbeitet, der 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 shown in the drawing for drawing a metal strip 2 is processed, which may be a thin metal strip. 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-Rollengänge 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 mindestens 180° um die Rollen schlingt. Für die Rollen 8 und 11 ist der Rollenumfangswinkel 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 stretching has five successively arranged S-roller tracks 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 roll 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 Metallband 2 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 kontrollierten Zugaufbau definieren und dann steuern bzw. regeln zu können.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 define the train level for the further controlled train construction and then to be able to control or regulate.

Die sich anschließende S-Rolleneinheit 4 weist die beiden Rollen 10 und 11 auf, die erheblich unterschiedliche Durchmesser aufweisen, nämlich die Durchmesser D10 bzw. D11. Der Rollendurchmesser D10 kann ca. 600 mm betragen - Werte zwischen 400 mm und 800 mm sind typisch -, während der Durchmesser D11 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 subsequent S-roll unit 4 has the two rollers 10 and 11, which have significantly different diameters, namely the diameter D 10 and D 11th The roll diameter D 10 can be about 600 mm - values between 400 mm and 800 mm are typical - while the diameter D 11 can be 1,200 mm, with values between 1,000 mm and 1,400 mm being 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 Antriebe der Rollen 10, 11 eingestellt wird, liegt auf einem solchen Niveau, dass rechnerisch noch keine Randfaserplastifizierung des zu reckenden Bandes eintritt. Die nachfolgende Rolle 11 der S-Rolleneinheit 4 weist den erheblich größeren Durchmesser D11 auf, diese Rolle 11 baut den Bandzug auf ein Niveau von über 96 % bis knapp unter 100 % des Streckgrenzenzuges auf. Da der Rollenradius 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 tape tension, which is set between the rollers 10 and 11 by appropriate control of the drives of the rollers 10, 11, not shown, is at such a level that mathematically no Randfaserplastifizierung the strip to be stretched occurs. The following roll 11 of the S-roll unit 4 has the considerably larger diameter D 11 , this roll 11 builds the strip tension to a level of over 96% to just below 100% of the yield stress. Since the roller radius is finite, a marginal fiber strain can not be excluded by bending the band, 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 Bandstrecke, auf der sich eine ungleichmäßige Spannungsverteilung über die Bandbreite 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-reel unit 4 and the subsequent roller 12 of the third S-reel unit 5 is a longer free belt length on which an uneven distribution of stress across the bandwidth can compensate by the Zugerhöhung. At this point, spikes can occur due to unevenness over microplastification, however, the actual stretching process is not yet generated at this point.

Mit der nächsten in Bandförderrichtung R folgenden Rolle 12, die denselben großen Durchmesser D12 wie die Rolle 11 hat, wird der Bandzug dann auf das für den gewünschten Reckgrad notwendige Niveau erhöht. Da das Ausgangsniveau 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 in the belt conveying direction R following roller 12, which has the same large diameter D 12 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 roll 12 are virtually eliminated. 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, entweder den Bandzug wieder auf ein Niveau zwischen 96 % bis knapp unter 100 % des Streckgrenzenzuges abzusenken und somit keine weitere Reckung aufzubringen. 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 subsequent S-roller unit 6, it is possible either to lower the strip tension again to a level between 96% to just below 100% of the yield limit tension and thus to apply 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 zum S-Rollenstand 4 vor dem Zugreckrollenpaar 12, 13 ausgebildet 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 is mirror-inverted to the S-roll stand 4 before the Zugreckrollenpaar 12, 13 is formed.

Für die Erfassung des Bandzuges sind auch in der S-Rolleneinheit 6 wieder Mittel 20 zum Messen der Zugkraft vorgesehen. Nach der im Durchmesser großen Rolle 14 der vierten S-Rolleneinheit 6 wird ein Bandzugniveau eingestellt, bei dem eine Plastifizierung des Metallbandes 2 bei Auflauf auf die dann folgende kleine Rolle 15 verhindert wird. Die kleine Rolle 15 stellt das Bandzugniveau 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 Bandzugniveau is set, in which a plasticization of the metal strip 2 is prevented at casserole on the then following small role 15. The small roller 15 sets the tape tension level to that for the following level measurement required level. The tape tension measurement is carried out by means 23 for measuring the tensile force.

Der letzte, fünfte S-Rolleneinheit 7 entspricht wiederum spiegelbildlich der ersten S-Rolleneinheit 3 und weist Rollen 16, 17 auf, die denselben kleinen Rollendurchmesser aufweisen wie die Rollen 10 bzw. 15. Diese S-Rolleneinheit 7 senkt den Bandzug auf das für den sich anschließenden Anlagenteil gewünschte 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 roll diameter as the rollers 10 and 15. This S-roll unit 7 lowers the tape tension to that for the subsequent plant part desired or required level.

An der vierten S-Rolleneinheit 6 sind Messmittel 21 angeordnet, die die Fördergeschwindigkeit 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-Rolleneinheit 3, 4, 5, 6, 7 so einwirkt, dass eine gewünschte Geschwindigkeit erreicht wird. Die Rolle 14, an der vorliegend die Fördergeschwindigkeit bzw. Bandgeschwindigkeit gemessen wird, fungiert also als "Speedmaster" mit nachgeschaltetem geschwindigkeitsgeregelten Hauptantrieb der Rollen bzw. der Zugrollensätze.At the fourth S-roll unit 6 measuring means 21 are arranged, which detect the conveying speed v of the metal strip 2. The measuring means 21 forward the measured value to a control or regulating device 22, which - which is shown only very schematically - on the drives of the S-roller unit 3, 4, 5, 6, 7 acts so that a desired speed is achieved , The roller 14, on which the conveying 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 Reckgrades 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 degree of stretching 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 Zugreckrollenpaar 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 größer als der Durchmesser der restlichen Rollen 8, 9, 10, 15, 16 und 17, die alle denselben Durchmesser aufweisen.The last roller 11 of the S-roller unit 4 (brake roller guide) in front of the Zugreckrollenpaar 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 5. This diameter is - as explained - much larger 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 (Zugreckrollengang) und in der S-Rolleneinheit 6 nach diesem wird mittels Bandzugmessung 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-reel unit 4 in front of the S-reel unit 5 (Zugreckrollgang) and in the S-reel unit 6 after this is adjusted by means of Bandzugmessung and torque measurement on the rollers so that at the smaller of the two in the S-roll unit 4 and 6 installed roller 10 or 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 Zugspannung zwischen 96 % bis knapp unter 100 % der Streckgrenze vor; dieser Bereich 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 area is the pre-stretch zone. 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.

SMS Demag AG, Eduard-Schloemann-Straße 4, 40237 DüsseldorfSMS Demag AG, Eduard-Schloemann-Strasse 4, 40237 Dusseldorf

BezugszeichenlisteLIST OF REFERENCE NUMBERS

11
Vorrichtung zum ZugreckenDevice for stretching
22
Metallbandmetal band
33
S-RolleneinheitS roller unit
44
S-RolleneinheitS roller unit
55
S-RolleneinheitS roller unit
66
S-RolleneinheitS roller unit
77
S-RolleneinheitS roller unit
88th
Rollerole
99
Rollerole
1010
Rollerole
1111
Rollerole
1212
Rollerole
1313
Rollerole
1414
Rollerole
1515
Rollerole
1616
Rollerole
1717
Rollerole
1818
Mittel zum Messen der ZugkraftMeans for measuring the tensile force
1919
Mittel zum Messen der ZugkraftMeans for measuring the tensile force
2020
Mittel zum Messen der ZugkraftMeans for measuring the tensile force
2121
Messmittelmeasuring Equipment
2222
Steuer- oder RegeleinrichtungControl or regulating device
2323
Mittel zum Messen der ZugkraftMeans for measuring the tensile force
RR
BandförderrichtungBelt conveying direction
αα
RollenumfangswinkelRole circumferential angle
D8 D 8
Durchmesser der Rolle 8Diameter of the roller 8
D9 D 9
Durchmesser der Rolle 9Diameter of the roll 9
D10 D 10
Durchmesser der Rolle 10Diameter of the roll 10
D11 D 11
Durchmesser der Rolle 11Diameter of the roller 11
D12 D 12
Durchmesser der Rolle 12Diameter of the roll 12
D13 D 13
Durchmesser der Rolle 13Diameter of the roller 13
D14 D 14
Durchmesser der Rolle 14Diameter of the roll 14
D15 D 15
Durchmesser der Rolle 15Diameter of the roller 15
D16 16
Durchmesser der Rolle 16Diameter of the roller 16
D17 D 17
Durchmesser der Rolle 17Diameter of the roller 17
vv
Fördergeschwindigkeitconveyor speed

Claims (5)

  1. Device (1) for continuous stretching under tension of a metal strip (2), which comprises in strip conveying direction (R) at least three S roller units (3, 4, 5, 6, 7) each with 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 positioned that they are looped around by the metal strip (2) over a roller circumferential angle (α) of more than 180°, wherein two R roller units (4, 6) comprise two rollers (D10, D11; D14, D15) of different diameter, of which the roller greater in diameter has at least 1.25 times the diameter of the smaller roller, wherein the device (1) comprises five S roller units (3, 4, 5, 6, 7) each with at least two rollers (8, 9, 10, 11, 12, 13, 14, 15, 16, 17) and in the fourth S roller unit (6) the roller (15) downstream in strip conveying direction has the smaller diameter (D15), and wherein the first and fifth roller units (3, 7) each comprise two rollers (8, 9, 16, 17) having a diameter (D8, D9, D16, D17) corresponding with the diameter (D10, D15) of the smaller roller (10, 15) of the second or fourth roller unit (4, 6),
    characterised in that
    in the second S roller unit (4) the roller (11) downstream in strip conveying direction has the larger diameter (D11) and the third roller unit (5) comprises two rollers (12, 13) which have a diameter (D12, D13) corresponding with the diameter (D11, D14) of the larger roller (11, 14) of the second or fourth roller unit (4, 6).
  2. Device according to claim 1, characterised in that means (18) for measuring the tension force prevailing in the metal strip (2) are arranged behind the first roller unit (3) in strip conveying direction (R).
  3. Device according to one of claims 1 and 2, characterised in that the S roller unit (4) second in strip conveying direction (R) is equipped with means (19) for measuring the tension force applied by the rollers (10, 11) to the metal strip (2).
  4. Device according to any one of claims 1 to 3, characterised in that the S roller unit (6) fourth in strip conveying direction (R) is equipped with means (20) for measuring the tension force applied by the rollers (14, 15) to the metal strip (2).
  5. Device according to any one of claims 3 to 4, characterised in that the S roller unit (6) fourth in strip conveying direction (R) is equipped with measuring means (21) for measuring the conveying speed (v) of the metal strip (2), which is connected with a control or regulating device (22), wherein the control or regulating device (22) controls or regulates the drives of at least a part of the S roller units (3, 4, 5, 6, 7) in accordance with the determined conveying speed (v).
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)

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

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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)

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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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DE3636707C2 (en) † 1986-10-28 1992-07-02 Bwg Bergwerk- Und Walzwerk-Maschinenbau Gmbh, 4100 Duisburg, De
EP0936954B1 (en) † 1996-11-06 2000-07-26 Kampf GmbH &amp; Co. Maschinenfabrik Device for stretching thin metal strips by traction
EP1245301A2 (en) † 2001-03-26 2002-10-02 Bwg Bergwerk- Und Walzwerk-Maschinenbau Gmbh Straightening device for steel - and metallic strips
EP1479460A1 (en) † 2003-05-23 2004-11-24 Bwg Bergwerk- Und Walzwerk-Maschinenbau Gmbh Method and apparatus for continuous straightening of metal strips

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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
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US5497817A (en) * 1992-05-25 1996-03-12 Nippon Steel Corporation Method for continuously annealing steel strip

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3636707C2 (en) † 1986-10-28 1992-07-02 Bwg Bergwerk- Und Walzwerk-Maschinenbau Gmbh, 4100 Duisburg, De
EP0936954B1 (en) † 1996-11-06 2000-07-26 Kampf GmbH &amp; Co. Maschinenfabrik Device for stretching thin metal strips by traction
EP1245301A2 (en) † 2001-03-26 2002-10-02 Bwg Bergwerk- Und Walzwerk-Maschinenbau Gmbh Straightening device for steel - and metallic strips
EP1479460A1 (en) † 2003-05-23 2004-11-24 Bwg Bergwerk- Und Walzwerk-Maschinenbau Gmbh Method and apparatus for continuous straightening of metal strips

Also Published As

Publication number Publication date
EP1796858B1 (en) 2008-07-23
RU2344894C2 (en) 2009-01-27
PL1796858T3 (en) 2009-01-30
ATE401975T1 (en) 2008-08-15
MY139051A (en) 2009-08-28
TWI332867B (en) 2010-11-11
CA2574710A1 (en) 2006-04-13
BRPI0514028A (en) 2008-05-27
DE102004048658A1 (en) 2006-04-20
RU2007103836A (en) 2007-08-10
EP1796858A1 (en) 2007-06-20
CN101018625A (en) 2007-08-15
DE502005004833D1 (en) 2008-09-04
JP2008515637A (en) 2008-05-15
WO2006037456A1 (en) 2006-04-13
AU2005291607A1 (en) 2006-04-13
ES2308552T3 (en) 2008-12-01
CN100531949C (en) 2009-08-26
MX2007004092A (en) 2007-08-07
KR20070051830A (en) 2007-05-18
US20080047314A1 (en) 2008-02-28
TW200621395A (en) 2006-07-01

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