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EP1955786A1 - Device and method for levelling metal strips - Google Patents

Device and method for levelling metal strips Download PDF

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Publication number
EP1955786A1
EP1955786A1 EP08000278A EP08000278A EP1955786A1 EP 1955786 A1 EP1955786 A1 EP 1955786A1 EP 08000278 A EP08000278 A EP 08000278A EP 08000278 A EP08000278 A EP 08000278A EP 1955786 A1 EP1955786 A1 EP 1955786A1
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EP
European Patent Office
Prior art keywords
tensioning roller
tensioning
strip
roller set
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
EP08000278A
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German (de)
French (fr)
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EP1955786B1 (en
Inventor
Andreas Dr. Dipl.-Ing. Noé
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.)
BWG Bergwerk und Walzwerk Maschinenbau GmbH
Original Assignee
BWG Bergwerk und Walzwerk Maschinenbau GmbH
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Publication date
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Publication of EP1955786A1 publication Critical patent/EP1955786A1/en
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Publication of EP1955786B1 publication Critical patent/EP1955786B1/en
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    • BPERFORMING OPERATIONS; TRANSPORTING
    • B21MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21DWORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D1/00Straightening, restoring form or removing local distortions of sheet metal or specific articles made therefrom; Stretching sheet metal combined with rolling
    • B21D1/05Stretching combined with rolling
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B21MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21DWORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D43/00Feeding, positioning or storing devices combined with, or arranged in, or specially adapted for use in connection with, apparatus for working or processing sheet metal, metal tubes or metal profiles; Associations therewith of cutting devices
    • B21D43/02Advancing work in relation to the stroke of the die or tool
    • B21D43/021Control or correction devices in association with moving strips
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B21MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21BROLLING OF METAL
    • B21B15/00Arrangements for performing additional metal-working operations specially combined with or arranged in, or specially adapted for use in connection with, metal-rolling mills
    • B21B2015/0071Levelling the rolled product

Definitions

  • the invention relates to an apparatus and a method for leveling metal strips, in particular thin metal strips, in the course of rolling, straightening and / or stretching.
  • a device has at least one tensioning roller set with at least two tensioning rollers.
  • Thin bands means in the context of the invention, in particular metal strips of a thickness of 0.05 mm to 1 mm, preferably 0.1 mm to 0.5 mm.
  • Metal bands means especially bands of aluminum alloys.
  • ripples edge waves and center waves
  • band saber as well as unbalanced flatness profiles
  • ripples and tape sacks z. B. during temper rolling a variable over the bandwidth temperature profile to influence the tensile stress distribution to generate, so that the degree of leveling can be adjusted by changing the tensile stress distribution (see. DE 199 33 610 A1 ).
  • the invention has the object of providing a method for leveling metal bands of the type described above in such a way that the flatness of the band can be improved in a simple yet cost-effective manner.
  • edge waves, center waves and / or band saber are to be almost completely suppressed.
  • the invention teaches in a generic device of the type described above, that at least one of the tension rollers of the tensioning roller set to influence the Planiergrades on the bandwidth in the tape running plane and / or is transverse or perpendicular to the tape plane pivot.
  • a tensioner is usually rotatably mounted on both sides in bearings.
  • the invention proposes that the position of a bearing point or both bearing points and thus the position of an axle or shaft end or both axis or shaft ends of a tension roller in the strip running plane and / or is adjustable transversely to the strip running plane.
  • z. B In a rolling mill, z. B.
  • Dressierstrom may be one or more roles of the Einlaufspannrollensatzes and / or the Auslaufspannrollensatzes. The same applies to a straightening device, for. B. stretch bender.
  • a straightening device for. B. stretch bender.
  • a Buchreckstrom in which between the Einlaufspannrollenensatz and the Auslaufspannrollensatz usually one or more other sets of tension rollers are provided to form stretching zones, it is useful if one or more of these tension rollers of Buchreckrollensatzes are adjustable according to the invention.
  • the invention is based on the recognition that the degree of planing can be influenced by the adjustable inclination or inclination of a tensioning roller or that a degree of planing variable over the bandwidth can be set. So can be z. B. when rolling or tempering or straightening or stretch bending between the tension roller sets affect the tensile stress distribution within the metal strip and set a variable over the bandwidth tensile stress distribution. If, for example, a misalignment occurs within the strip running plane, this results in one side of the strip becoming "tighter” and the other side becoming “looser", ie at one of the strip edges the strip tension increases, at the other edge of the strip it decreases.
  • the tape tension distribution is also affected because the tape edges are tighter compared to the center of the tape, ie in the middle of the band increases the tape tension against the two band edges. Such an adjustment can therefore be used to compensate for center ripples.
  • the tension distribution and thus the degree of planing are influenced by the described skewing or angle adjustment.
  • the degree of planishing is influenced by the misalignment or angle adjustment of one or more rolls.
  • the tensile stress distribution assuming ideal plastic conditions in the stretching zone, is not influenced by the skewing. Nevertheless, the degree of planing during the drawing process also depends on the angular position of the roller, since it directly influences the plastic strain distribution and thus the plastic belt extension over the belt width variably.
  • the invention includes embodiments in which only one roller of a tensioning roller set is adjusted or pivoted. It is also in the Frame of the invention that several roles within a tensioning roller set, z. B. be adjusted both roles of an S-roll pair.
  • the metal strip is guided around the pivotable tensioning roller with a wrap angle of at least 45 °, since from a wrap angle of 45 ° (or more) the desired effect, namely the influence of the degree of planing by pivoting the roller clearly stands out.
  • a wrapping angle of at least 90 ° or more than 90 ° is selected.
  • the wrap angle in the region of the pivotable roller is at least 180 °.
  • the device has at least one flatness measuring device, the z. B. may be arranged downstream of the tension roller set.
  • a flatness measuring device according to the invention is connected to a control and / or regulating device, which in turn interacts with the adjustable tensioning roller.
  • actuators may be hydraulic (or pneumatic) cylinder piston assemblies, electric motor actuators or the like. It is expedient if these actuators are controlled by the described control and / or regulating unit, possibly taking into account the flatness measurement results.
  • the invention also provides a method for leveling metal strips in the course of rolling, straightening and / or drawing. Such a method is preferably carried out with a device of the type described, wherein the metal strip under strip tension is at least partially plastically deformed.
  • the invention proposes that by means of pivoting at least one tensioning roller, a planing degree variable over the bandwidth is set.
  • rolling eg temper rolling
  • straightening eg stretch bending
  • the pivoting affects the tensile stress distribution across the belt width and thus the degree of planing.
  • the pivoting directly influences the plastic strip extension or the plastic strain distribution.
  • the tensioner is z. B.
  • the tensioning roller is pivoted about a pivot axis which is (substantially) perpendicular to the axis of rotation of the tensioning roller.
  • the tensioning roller (or its axis) can be pivoted to set the tension distribution by an angle of 0 to 5 °, preferably 0 to 3 °.
  • the tensioning roller in the area of a bearing point or in the region of both bearing points by a distance of 0 to 2 mm, z. B. 0 to 1 mm can be adjusted.
  • the flatness of the belt is determined, for. B. with a flatness measuring roller or the like and the adjustment of the tension roller is then controlled and / or regulated in dependence on the determined flatness.
  • a device for leveling metal strips 1, in particular thin metal strips of aluminum alloys is shown in various embodiments.
  • Such a device has at least one trained as Einlaufspannrollensatz clamping roller set 2 and at least one designed as Auslaufspannrollensatz clamping roller set 3, wherein the Einlaufspannrollensatz 2 the train construction and the Auslaufspannrollensatz 3 serves the Switzerlandabbau.
  • a belt treatment device for. B.
  • a rolling mill 4 Fig. 1 to 4
  • a pull-out unit 5 Fig. 5
  • the drafting unit 5 according to Fig. 5 has a further tensioning roller set 6, which is designed as Switzerlandreckrollensatz.
  • At least one of the tensioning rollers 7, 8 of at least one tensioning roller set 2, 3, 6 in the belt running plane B and / or transversely to the belt running plane B is pivotable.
  • the position of one of these bearings 9 or both bearings 9 in the belt running plane B and / or transverse to the belt running plane B is adjustable.
  • the bearings 9 Be connected position actuators or actuators, which are not shown in the figures.
  • a rolling mill 4 is arranged between the Einlaufspannrollenensatz 2 and the Auslaufspannrollensatz 3 is according to Fig. 1 and 3 .
  • Fig. 1 can be the rolling stand 4 directly upstream or downstream tensioning roller 8 of a tensioning roller set 2 within the belt running plane B pivot and consequently skew.
  • the strip tension concentrates on one side, ie in the region of one edge of the strip, the strip tension increases while it decreases on the other edge of the strip.
  • the inclination of the roller 8 within the belt running plane B is in Fig. 2 (heavily oversubscribed).
  • the pivot angle ⁇ in the strip running plane is usually only 0 to 2 °, preferably only 0 to 1 °.
  • the resulting tensile stress distribution Z is in Fig. 2 also indicated. In the manner shown can be z. B. correct a band saber.
  • the relevant roller 8 need not be driven. In the context of the invention, however, both (rotating) driven and non-driven tensioning rollers are always included.
  • Fig. 1 recognizable that it is expedient if the wrap angle is about 180 ° or more.
  • the misalignment of the roller 8 and the adjustment angle ⁇ is - as explained - relatively small, so that a displacement of a bearing 9 of less than one millimeter can be sufficient. Surprisingly enough such small adjustments, so that at the same time problems with an impermissible belt run are avoided.
  • Fig. 3 shows Fig. 3 an embodiment in which the roll stand 4 directly upstream or downstream roller 8 is pivoted perpendicular to the strip plane B.
  • Fig. 4 makes it clear that in this way the tensile stresses Z in the band 1 concentrate on the band edges or margins, consequently a higher band tensile stress is present in the region of the band edges than in the area of the band center.
  • the rolling reduction at the edges or, in the case of temper rolling stands the degree of temper rolling increases and there is a tendency for edge waviness, so that suitable waviness can be compensated for by suitable process control.
  • Fig. 5 shows a drafting device according to the invention. This also has a Einlaufspannrollensatz 2 for train construction and a Auslaufspannrollensatz 3 for train reduction. Between the Einlaufspannrollensatz and the Auslaufspannrollensatz another set of tension rollers 6 is arranged, which is designed as Buchreckrollensatz with two Buchreckrollen 7, 8. Between these two access rollers 7, 8, the stretching zone R is formed, within which the plastic deformation takes place to influence the band flatness. According to the invention it is now provided that at least one of these Buchreckrollen 7, 8, z. B. the outlet side Buchreckrolle 8, in the strip running plane B and / or transverse to the strip plane B is pivotable.
  • Tape running plane B also here means the strip running plane B in the region of the deformation zone and consequently in the region of the stretching zone R. In the Fig. 5 only one adjustment is indicated transversely or perpendicular to the tape plane B.
  • pivoting does not affect the tensile stress distribution in the belt in the stretch zone. However, the pivoting directly influences the degree of planing, since the plastic strain behavior of the strip in the stretching zone depends on the angular position of the roll.
  • the adjustable roller 8 works as it were as another flatness actuator.
  • a flatness measuring device 10 is integrated in the systems described. This may be a flatness measuring roll 10 or even a planarity measuring device of another kind, for. B. a non-contact flatness measuring device act.
  • Fig. 5 it is indicated that it is expedient to arrange this flatness measuring device 10 behind the outlet tensioning roller set 3.
  • the adjustment of the described tensioning roller 8 according to the invention can be controlled and / or regulated. Possibly. a closed flatness control loop can be set up.
  • the invention can also be used with other planarity actuators such.
  • B. combine a contour variable role.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Straightening Metal Sheet-Like Bodies (AREA)
  • Metal Rolling (AREA)

Abstract

Sets of tightening rollers form a feeder set (2) of tightening rollers and a delivery set (3) of tightening rollers. The feeder set of tightening rollers increases pulling action. The delivery set of tightening rollers decreases pulling action. Between the feeder set of tightening rollers and the delivery set of tightening rollers there can be a band-treatment device, e.g. rollers (4)/stretching devices. An independent claim is also included for a method for planishing/smoothing metal bands during rolling, aligning and/or stretching.

Description

Die Erfindung betrifft eine Vorrichtung und ein Verfahren zum Planieren von Metallbändern, insbesondere dünnen Metallbändern, im Zuge des Walzens, Richtens und/oder Zugreckens. Eine solche Vorrichtung weist zumindest einen Spannrollensatz mit zumindest zwei Spannrollen auf. Dünne Bänder meint im Rahmen der Erfindung insbesondere Metallbänder einer Dicke von 0,05 mm bis 1 mm, vorzugsweise 0,1 mm bis 0,5 mm. Metallbänder meint insbesondere Bänder aus Aluminiumlegierungen.The invention relates to an apparatus and a method for leveling metal strips, in particular thin metal strips, in the course of rolling, straightening and / or stretching. Such a device has at least one tensioning roller set with at least two tensioning rollers. Thin bands means in the context of the invention, in particular metal strips of a thickness of 0.05 mm to 1 mm, preferably 0.1 mm to 0.5 mm. Metal bands means especially bands of aluminum alloys.

Metallbänder und insbesondere dünne Metallbänder müssen nach heutigem Standard immer höhere Anforderungen an die Bandplanheit bei höchster Qualität der Bandoberfläche erfüllen. In diesem Zusammenhang kennt man verschiedene Verfahren zum Planieren von Metallbändern, z. B. das Walzen (insbesondere Dressierwalzen), das Richten (insbesondere Streckbiegerichten) und das Zugrecken. Die dazu eingesetzten Vorrichtungen weisen häufig einen Einlaufspannrollensatz zum Zugaufbau und einen Auslaufspannrollensatz zum Zugabbau auf. Dieses gilt insbesondere für das Streckbiegerichten und Zugrecken sowie für das Dressieren im Falle von Inline-Dressierverfahren. Beim Dressierwalzen ist dann zwischen diesen Spannrollensätzen das Dressierwalzgerüst angeordnet, während beim Streckbiegerichten zwischen diesen Spannrollensätzen die Streckbiegeeinheit vorgesehen sein kann. Bei einer Zugreckvorrichtung ist zwischen dem Einlaufspannrollensatz und dem Auslaufspannrollensatz üblicherweise zumindest ein weiterer Spannrollensatz als Zugreckrollensatz vorgesehen.Metal strips and in particular thin metal strips must meet today's standard ever higher demands on the strip flatness with the highest quality of the strip surface. In this connection, various methods for leveling metal strips, z. B. rolling (in particular temper rolling), the straightening (in particular stretch bending straightening) and the stretching. The devices used for this purpose often have a Einlaufspannrollensatz for Zugaufbau and a Auslaufspannrollensatz to Zugabbau on. This applies in particular to the stretch bending and drawing as well as for the tempering in the case of in-line skin-pass coating. In temper rolling, the temper rolling stand is then arranged between these sets of tension rollers, while the stretch bending unit can be provided in the case of stretch bending levels between these sets of tension rollers. In a drafting device, at least one further set of tensioning rollers is usually provided between the infeed tensioning roller set and the outfeed tensioning roller set as the tensioning roller set.

Mit dem bekannten Verfahren zum Planieren von Metallbändern durch Walzen, Richten und/oder Zugrecken lassen sich insbesondere Welligkeiten (Randwellen und Mittenwellen) oder Bandsäbel sowie zur Bandmitte unsymmetrische Planlageprofile kaum vollständig beseitigen, so dass eine ideale Planlage nur selten erreicht wird. Um die Planlage weiter zu verbessern ist es bekannt, zum Beseitigen von Welligkeiten und Bandsäbeln, z. B. beim Dressierwalzen ein über die Bandbreite veränderbares Temperaturprofil zur Beeinflussung der Zugspannungsverteilung zu erzeugen, so dass sich der Planiergrad durch die Veränderung der Zugspannungsverteilung einstellen lässt (vgl. DE 199 33 610 A1 ).With the known method for leveling metal strips by rolling, straightening and / or stretching, ripples (edge waves and center waves) or band saber as well as unbalanced flatness profiles can hardly be completely eliminated, so that an ideal flatness only is rarely achieved. To further improve the flatness, it is known to eliminate ripples and tape sacks, z. B. during temper rolling a variable over the bandwidth temperature profile to influence the tensile stress distribution to generate, so that the degree of leveling can be adjusted by changing the tensile stress distribution (see. DE 199 33 610 A1 ).

Außerdem ist es zum Verringern von Randwellen oder Mittenschüsseln im Zuge des Planierens von Metallbändern vorgeschlagen worden, bei einem Spannrollensatz eine einstellbare Kontur mit z. B. konvexer Außenwölbung und/oder konkaver Innenwölbung vorzusehen (vgl. EP 0 587 995 A1 ).In addition, it has been proposed for reducing edge waves or center bowls in the course of leveling metal strips, in a tensioning roller set an adjustable contour with z. B. convex outer curvature and / or concave inner curvature provide (see. EP 0 587 995 A1 ).

Ferner kennt man eine Vorrichtung zum Biegerichten von Metallband mit parallel zueinander angeordneten Führungsrollen und einer in dem Zwickel zweier Führungsrollen angeordneten Richtrolle, bei der das Band die Richtrolle zwischen zwei Berührungslinien formschlüssig umschlingt, längs derer die Führungsrollen über das Band in mittelbarer Berührung mit der Richtrolle stehen. Um die Eintauchtiefe und damit auch den von den Richtrollenradien bzw. den Berührungslinien bestimmten Umschlingungswinkel in Abhängigkeit von der Banddicke und der Festigkeit des Bandwerkstoffes ändern zu können, sind die Stützrollen, die Führungsrolle und die Richtrolle auf einer gemeinsamen Konsole gelagert, die sich um einen Drehpunkt verschwenken lässt (vgl. DE 197 08 488 A1 ). Durch diese Maßnahmen wird die Zugspannungsverteilung über die Bandbreite nicht variiert, so dass sich auch der Planiergrad nicht über die Bandbreite variieren lässt.Furthermore, there is known a device for bending of metal strip with parallel arranged guide rollers and arranged in the gusset of two guide rollers straightening roller, in which the tape looped around the straightening roller between two lines of contact along which the guide rollers are in indirect contact with the straightening roller over the tape , In order to change the immersion depth and thus also determined by the straightening radii or the contact lines wrap depending on the strip thickness and the strength of the strip material, the support rollers, the guide roller and the straightening roller are mounted on a common console, which is a pivot point can pivot (cf. DE 197 08 488 A1 ). As a result of these measures, the tensile stress distribution over the bandwidth is not varied so that the degree of grading can not be varied over the bandwidth.

Der Erfindung liegt die Aufgabe zugrunde, ein Verfahren zum Planieren von Metallbändern der eingangs beschriebenen Art derart weiterzubilden, dass sich die Planheit des Bandes auf einfache und zugleich kostengünstige Weise verbessern lässt. Insbesondere sollen Randwellen, Mittenwellen und/oder Bandsäbel nahezu vollständig unterdrückt werden.The invention has the object of providing a method for leveling metal bands of the type described above in such a way that the flatness of the band can be improved in a simple yet cost-effective manner. In particular, edge waves, center waves and / or band saber are to be almost completely suppressed.

Zur Lösung dieser Aufgabe lehrt die Erfindung bei einer gattungsgemäßen Vorrichtung der eingangs beschriebenen Art, dass zumindest eine der Spannrollen des Spannrollensatzes zur Beeinflussung des Planiergrades über die Bandbreite in der Bandlaufebene und/oder quer bzw. senkrecht zur Bandlaufebene verschwenkbar ist. Eine solche Spannrolle ist üblicherweise beidseitig in Lagerstellen drehbar gelagert. In diesem Falle schlägt die Erfindung vor, dass die Position einer Lagerstelle oder beider Lagerstellen und folglich die Position eines Achsen- bzw. Wellenendes oder beider Achsen- bzw. Wellenenden einer Spannrolle in der Bandlaufebene und/oder quer zur Bandlaufebene einstellbar ist. In einer Walzanlage, z. B. Dressieranlage kann es sich um eine oder auch um mehrere Rollen des Einlaufspannrollensatzes und/oder des Auslaufspannrollensatzes handeln. Gleiches gilt für eine Richtvorrichtung, z. B. Streckbiegerichtvorrichtung. Im Falle einer Zugreckanlage, bei der zwischen dem Einlaufspannrollensatz und dem Auslaufspannrollensatz üblicherweise ein oder auch mehrere weitere Spannrollensätze unter Bildung von Reckzonen vorgesehen sind, ist es zweckmäßig, wenn eine oder mehrere dieser Spannrollen des Zugreckrollensatzes erfindungsgemäß verstellbar sind.To solve this problem, the invention teaches in a generic device of the type described above, that at least one of the tension rollers of the tensioning roller set to influence the Planiergrades on the bandwidth in the tape running plane and / or is transverse or perpendicular to the tape plane pivot. Such a tensioner is usually rotatably mounted on both sides in bearings. In this case, the invention proposes that the position of a bearing point or both bearing points and thus the position of an axle or shaft end or both axis or shaft ends of a tension roller in the strip running plane and / or is adjustable transversely to the strip running plane. In a rolling mill, z. B. Dressieranlage may be one or more roles of the Einlaufspannrollensatzes and / or the Auslaufspannrollensatzes. The same applies to a straightening device, for. B. stretch bender. In the case of a Zugreckanlage, in which between the Einlaufspannrollenensatz and the Auslaufspannrollensatz usually one or more other sets of tension rollers are provided to form stretching zones, it is useful if one or more of these tension rollers of Zugreckrollensatzes are adjustable according to the invention.

Dabei geht die Erfindung von der Erkenntnis aus, dass sich durch die einstellbare Schiefstellung bzw. Schrägstellung einer Spannrolle der Planiergrad beeinflussen bzw. eine über die Bandbreite variabler Planiergrad einstellen lässt. So lässt sich z. B. beim Walzen bzw. Dressieren oder Richten bzw. Streckbiegerichten zwischen den Spannrollensätzen die Zugspannungsverteilung innerhalb des Metallbandes beeinflussen und eine über die Bandbreite variable Zugspannungsverteilung einstellen. Erfolgt beispielsweise eine Schiefstellung innerhalb der Bandlaufebene, so hat dieses zur Folge, dass die eine Seite des Bandes "strammer" und die andere Seite "lockerer" wird, d. h. an einer der Bandkanten erhöht sich die Bandzugspannung, an der anderen Bandkante verringert sie sich. Da die beschriebenen Prozesse (insbes. Walzen und Richten) empfindlich von der Zugspannungsverteilung bzw. Bandzugspannung abhängen, lassen sich durch einstellbare Schiefstellung innerhalb der Bandlaufebene insbesondere einseitige Planlagefehler wie z. B. einseitige Randwellen, Bandsäbel oder zur Bandmitte unsymmetrische Planlageprofile eliminieren. Im Rahmen der Erfindung besteht jedoch nicht nur die Möglichkeit, die jeweilige Spannrolle in der Bandlaufebene zu verschwenken, sondern alternativ oder ergänzend kann die Spannrolle auch quer zur Bandlaufebene bzw. senkrecht zur Bandlaufebene verschwenkt werden. Bandlaufebene meint dabei stets die Bandlaufebene in der jeweiligen Verformungszone. Durch Verschwenken einer Spannrolle senkrecht zur Bandlaufebene wird die Bandzugspannungsverteilung ebenfalls beeinflusst, da die Bandränder gegenüber der Bandmitte strammer werden, d. h. im Bereich der Bandmitte erhöht sich die Bandzugspannung gegenüber den beiden Bandkanten. Eine solche Verstellung kann daher zur Kompensation von Mittenwelligkeiten benutzt werden. Beim Walzen und Richten, bei welchem die Bandzugspannung zwischen den Spannrollensätzen üblicherweise unterhalb der Streckgrenze liegt, wird durch die beschriebene Schiefstellung bzw. Winkelverstellung die Zugspannungsverteilung und damit dann der Planiergrad beeinflusst. Doch auch beim Zugrecken, bei welchem die Bandzugspannung in der Reckzone im Bereich der Streckgrenze liegt, wird der Planiergrad durch die Schiefstellung bzw. Winkelverstellung einer oder mehrerer Walzen beeinflusst. So wird die Zugspannungsverteilung unter Annahme idealplastischer Bedingungen in der Reckzone durch die Schiefstellung zwar nicht beeinflusst. Dennoch hängt auch der Planiergrad beim Zugrecken von der Winkelstellung der Rolle ab, da diese unmittelbar die plastische Dehnungsverteilung und damit die plastische Bandverlängerung über die Bandbreite variabel beeinflusst.The invention is based on the recognition that the degree of planing can be influenced by the adjustable inclination or inclination of a tensioning roller or that a degree of planing variable over the bandwidth can be set. So can be z. B. when rolling or tempering or straightening or stretch bending between the tension roller sets affect the tensile stress distribution within the metal strip and set a variable over the bandwidth tensile stress distribution. If, for example, a misalignment occurs within the strip running plane, this results in one side of the strip becoming "tighter" and the other side becoming "looser", ie at one of the strip edges the strip tension increases, at the other edge of the strip it decreases. Since the processes described (esp and straightening) sensitive to the tensile stress distribution or tape tension depend, can be adjusted by adjustable inclination within the strip running plane in particular unilateral flatness errors such. B. single-sided edge waves, band saber or the center of the band unbalanced flatness profiles eliminate. In the context of the invention, however, not only is it possible to pivot the respective tensioning roller in the strip running plane, but alternatively or additionally, the tensioning roller can also be pivoted transversely to the strip running plane or perpendicular to the strip running plane. The strip running plane always means the strip running plane in the respective deformation zone. By pivoting a tension roller perpendicular to the strip plane, the tape tension distribution is also affected because the tape edges are tighter compared to the center of the tape, ie in the middle of the band increases the tape tension against the two band edges. Such an adjustment can therefore be used to compensate for center ripples. When rolling and straightening, in which the band tension between the sets of tension rollers is usually below the yield strength, the tension distribution and thus the degree of planing are influenced by the described skewing or angle adjustment. However, even during drawing stretching, in which the strip tension in the stretching zone lies in the region of the yield strength, the degree of planishing is influenced by the misalignment or angle adjustment of one or more rolls. Thus, the tensile stress distribution, assuming ideal plastic conditions in the stretching zone, is not influenced by the skewing. Nevertheless, the degree of planing during the drawing process also depends on the angular position of the roller, since it directly influences the plastic strain distribution and thus the plastic belt extension over the belt width variably.

Die Erfindung umfasst Ausführungsformen, bei welchen lediglich eine Rolle eines Spannrollensatzes verstellt bzw. verschwenkt wird. Es liegt aber auch im Rahmen der Erfindung, dass mehrere Rollen innerhalb eines Spannrollensatzes, z. B. beide Rollen eines S-Rollenpaares verstellt werden.The invention includes embodiments in which only one roller of a tensioning roller set is adjusted or pivoted. It is also in the Frame of the invention that several roles within a tensioning roller set, z. B. be adjusted both roles of an S-roll pair.

Nach einem weiteren Vorschlag der Erfindung ist vorgesehen, dass das Metallband um die verschwenkbare Spannrolle mit einem Umschlingungswinkel von zumindest 45° geführt ist, da ab einem Umschlingungswinkel von 45° (oder mehr) der gewünschte Effekt, nämlich die Beeinflussung des Planiergrades durch Verschwenken der Rolle deutlich hervortritt. Bevorzugt wird ein Umschlingungswinkel von zumindest 90° bzw. mehr als 90° gewählt. Nach einer besonders bevorzugten Ausführungsform beträgt der Umschlingungswinkel im Bereich der verschwenkbaren Rolle zumindest 180°.According to a further proposal of the invention it is provided that the metal strip is guided around the pivotable tensioning roller with a wrap angle of at least 45 °, since from a wrap angle of 45 ° (or more) the desired effect, namely the influence of the degree of planing by pivoting the roller clearly stands out. Preferably, a wrapping angle of at least 90 ° or more than 90 ° is selected. According to a particularly preferred embodiment, the wrap angle in the region of the pivotable roller is at least 180 °.

Nach einem weiteren Vorschlag der Erfindung ist vorgesehen, dass die Vorrichtung zumindest eine Planheitsmessvorrichtung aufweist, die z. B. dem Spannrollensatz nachgeordnet sein kann. Eine solche Planheitsmessvorrichtung ist erfindungsgemäß mit einer Steuer- und/oder Regelvorrichtung verbunden, welche wiederum mit der verstellbaren Spannrolle zusammenwirkt. Durch eine nachfolgende Messung der Zugspannungsverteilung im Band nach dem Walzen oder nach dem Richten oder nach dem Zugrecken kann ein geschlossener Planheitsregelkreis realisiert werden.According to a further proposal of the invention it is provided that the device has at least one flatness measuring device, the z. B. may be arranged downstream of the tension roller set. Such a flatness measuring device according to the invention is connected to a control and / or regulating device, which in turn interacts with the adjustable tensioning roller. By a subsequent measurement of the tensile stress distribution in the strip after rolling or after straightening or after drawing a closed planarity control loop can be realized.

Zum Einstellen der Schieflage bzw. Schräglage bzw. zur Positionierung der beiden Lagerstellen einer solchen Spannrolle können den beiden Lagerstellen jeweils ein separater oder auch mehrere separate Stellantriebe zugeordnet sein. Bei diesen Stellantrieben kann es sich um hydraulische (oder auch pneumatische) Zylinderkolbenanordnungen, um elektromotorische Stelltriebe oder dergleichen handeln. Dabei ist es zweckmäßig, wenn diese Stellantriebe von der beschriebenen Steuer- und/oder Regeleinheit ggf. unter Berücksichtigung von Planheitsmessergebnissen angesteuert werden.To set the skew or inclined position or for positioning of the two bearing points of such a tensioner can be assigned to the two bearings each have a separate or several separate actuators. These actuators may be hydraulic (or pneumatic) cylinder piston assemblies, electric motor actuators or the like. It is expedient if these actuators are controlled by the described control and / or regulating unit, possibly taking into account the flatness measurement results.

Gegenstand der Erfindung ist auch ein Verfahren zum Planieren von Metallbändern im Zuge des Walzens, Richtens und/oder Zugreckens. Ein derartiges Verfahren wird vorzugsweise mit einer Vorrichtung der beschriebenen Art durchgeführt, wobei das unter Bandzug stehende Metallband zumindest bereichsweise plastisch verformt wird. Dabei schlägt die Erfindung vor, dass durch Verschwenken zumindest einer Spannrolle ein über die Bandbreite variabler Planiergrad eingestellt wird. Im Falle des Walzens (z. B. Dressierwalzens) oder Richtens (z. B. Streckbiegerichtens) beeinflusst das Verschwenken die Zugspannungsverteilung über die Bandbreite und damit den Planiergrad. Im Falle des Zugreckens beeinflusst das Verschwenken direkt die plastische Bandverlängerung bzw. die plastische Dehnungsverteilung. Die Spannrolle wird dabei z. B. in der Bandlaufebene und/oder quer bzw. senkrecht zur Bandlaufebene verschwenkt und folglich verkippt bzw. schräg gestellt. Die Spannrolle wird dabei um eine Schwenkachse verschwenkt, welche (im Wesentlichen) senkrecht auf die Rotationsachse der Spannrolle steht. Die Spannrolle (bzw. deren Achse) kann dabei zum Einstellen der Zugspannungsverteilung um einen Winkel von 0 bis 5°, vorzugsweise 0 bis 3°, verschwenkt werden. Dazu kann die Spannrolle im Bereich einer Lagerstelle oder auch im Bereich beider Lagerstellen um einen Weg von 0 bis 2 mm, z. B. 0 bis 1 mm verstellt werden. Vorzugsweise wird (nach dem Planieren des Bandes) die Planheit des Bandes ermittelt, z. B. mit einer Planheitsmessrolle oder dergleichen und die Einstellung der Spannrolle wird dann in Abhängigkeit von der ermittelten Planheit gesteuert und/oder geregelt.The invention also provides a method for leveling metal strips in the course of rolling, straightening and / or drawing. Such a method is preferably carried out with a device of the type described, wherein the metal strip under strip tension is at least partially plastically deformed. In this case, the invention proposes that by means of pivoting at least one tensioning roller, a planing degree variable over the bandwidth is set. In the case of rolling (eg temper rolling) or straightening (eg stretch bending), the pivoting affects the tensile stress distribution across the belt width and thus the degree of planing. In the case of drafting, the pivoting directly influences the plastic strip extension or the plastic strain distribution. The tensioner is z. B. in the tape running plane and / or transversely or perpendicular to the tape plane and thus tilted or tilted. The tensioning roller is pivoted about a pivot axis which is (substantially) perpendicular to the axis of rotation of the tensioning roller. The tensioning roller (or its axis) can be pivoted to set the tension distribution by an angle of 0 to 5 °, preferably 0 to 3 °. For this purpose, the tensioning roller in the area of a bearing point or in the region of both bearing points by a distance of 0 to 2 mm, z. B. 0 to 1 mm can be adjusted. Preferably (after the leveling of the belt) the flatness of the belt is determined, for. B. with a flatness measuring roller or the like and the adjustment of the tension roller is then controlled and / or regulated in dependence on the determined flatness.

Im Folgenden wird die Erfindung anhand von lediglich Ausführungsbeispielen darstellenden Zeichnungen näher erläutert. Es zeigen

Fig. 1
eine erfindungsgemäße Vorrichtung zum Planieren von Metallbändern im Wege des Walzens in einer schematischen Seitenansicht,
Fig. 2
eine vereinfachte Draufsicht mit angedeuteter Zugspannungsverteilung,
Fig. 3
eine abgewandelte Ausführungsform des Gegenstandes nach Fig. 1,
Fig. 4
die Zugspannungsverteilung über die Bandbreite b beim Gegenstand nach Fig. 3 und
Fig. 5
eine erfindungsgemäße Vorrichtung zum Planieren von Metallbändern durch Zugrecken in einer schematischen Seitenansicht.
In the following the invention will be explained in more detail with reference to drawings showing merely exemplary embodiments. Show it
Fig. 1
a device according to the invention for leveling metal strips by means of rolling in a schematic side view,
Fig. 2
a simplified plan view with indicated tensile stress distribution,
Fig. 3
a modified embodiment of the article according to Fig. 1 .
Fig. 4
the tensile stress distribution over the bandwidth b of the object after Fig. 3 and
Fig. 5
a device according to the invention for leveling metal strips by pulling in a schematic side view.

In den Figuren ist in verschiedenen Ausführungsformen eine Vorrichtung zum Planieren von Metallbändern 1, insbesondere dünnen Metallbändern aus Aluminiumlegierungen dargestellt. Eine solche Vorrichtung weist zumindest einen als Einlaufspannrollensatz ausgebildeten Spannrollensatz 2 und zumindest einen als Auslaufspannrollensatz ausgebildeten Spannrollensatz 3 auf, wobei der Einlaufspannrollensatz 2 dem Zugaufbau und der Auslaufspannrollensatz 3 dem Zugabbau dient. Zwischen dem Einlaufspannrollensatz 2 und dem Auslaufspannrollensatz 3 kann eine Bandbehandlungseinrichtung, z. B. ein Walzgerüst 4 (Fig. 1 bis 4) und/oder eine Zugreckeinheit 5 (Fig. 5) angeordnet sein. Die Zugreckeinheit 5 gemäß Fig. 5 weist einen weiteren Spannrollensatz 6 auf, der als Zugreckrollensatz ausgebildet ist.In the figures, a device for leveling metal strips 1, in particular thin metal strips of aluminum alloys, is shown in various embodiments. Such a device has at least one trained as Einlaufspannrollensatz clamping roller set 2 and at least one designed as Auslaufspannrollensatz clamping roller set 3, wherein the Einlaufspannrollensatz 2 the train construction and the Auslaufspannrollensatz 3 serves the Zugabbau. Between the inlet tensioning roller set 2 and the outlet tensioning roller set 3, a belt treatment device, for. B. a rolling mill 4 ( Fig. 1 to 4 ) and / or a pull-out unit 5 ( Fig. 5 ) can be arranged. The drafting unit 5 according to Fig. 5 has a further tensioning roller set 6, which is designed as Zugreckrollensatz.

Erfindungsgemäß ist nun vorgesehen, dass zumindest eine der Spannrollen 7, 8 zumindest eines Spannrollensatzes 2, 3, 6 in der Bandlaufebene B und/oder quer zur Bandlaufebene B verschwenkbar ist. Unter Berücksichtigung der Tatsache, dass eine solche Spannrolle 8 beidseitig in Lagerstellen 9 drehbar gelagert ist, ist vorgesehen, dass die Position einer dieser Lagerstellen 9 oder auch beider Lagerstellen 9 in der Bandlaufebene B und/oder quer zur Bandlaufebene B einstellbar ist. Dazu können an die Lagerstellen 9 Positionsantriebe bzw. Stellantriebe angeschlossen sein, die in den Figuren nicht dargestellt sind.According to the invention, it is now provided that at least one of the tensioning rollers 7, 8 of at least one tensioning roller set 2, 3, 6 in the belt running plane B and / or transversely to the belt running plane B is pivotable. Taking into account the fact that such a tension roller 8 is rotatably supported on both sides in bearings 9, it is provided that the position of one of these bearings 9 or both bearings 9 in the belt running plane B and / or transverse to the belt running plane B is adjustable. For this purpose, to the bearings 9 Be connected position actuators or actuators, which are not shown in the figures.

Im Folgenden soll die Erfindung beispielhaft anhand des Walzens erläutert werden (vgl. Fig. 1 bis 4). Zwischen dem Einlaufspannrollensatz 2 und dem Auslaufspannrollensatz 3 ist gemäß Fig. 1 und 3 ein Walzgerüst 4 angeordnet. Gemäß Fig. 1 lässt sich die dem Walzgerüst 4 unmittelbar vor- oder nachgeordnete Spannrolle 8 eines Spannrollensatzes 2 innerhalb der Bandlaufebene B verschwenken und folglich schiefstellen. Auf diese Weise konzentriert sich der Bandzug auf eine Seite, d. h. im Bereich einer Bandkante erhöht sich die Bandzugspannung, während sie sich an der anderen Bandkante verringert. Die Schrägstellung der Rolle 8 innerhalb der Bandlaufebene B ist in Fig. 2 (stark überzeichnet) dargestellt. Der Schwenkwinkel α in der Bandlaufebene beträgt üblicherweise lediglich 0 bis 2°, vorzugsweise lediglich 0 bis 1°. Die daraus resultierende Zugspannungsverteilung Z ist in Fig. 2 ebenfalls angedeutet. Auf die dargestellte Weise lässt sich z. B. ein Bandsäbel korrigieren. In dem dargestellten Ausführungsbeispiel muss die betreffende Rolle 8 nicht angetrieben sein. Im Rahmen der Erfindung werden jedoch stets sowohl (rotierend) angetriebene als auch nicht angetriebene Spannrollen umfasst. Im Übrigen ist in Fig. 1 erkennbar, dass es zweckmäßig ist, wenn der Umschlingungswinkel ca. 180° oder mehr beträgt. Die Schiefstellung der Rolle 8 bzw. der Verstellwinkel α ist - wie erläutert - verhältnismäßig klein, so dass eine Verschiebung einer Lagerstelle 9 von weniger als einem Millimeter ausreichen kann. Überraschenderweise reichen derart geringe Verstellungen aus, so dass zugleich Probleme mit einem unzulässigen Bandverlauf vermieden werden. Um den Gesamtplanheitsstellbereich zu erweitern, besteht die Möglichkeit, die dargestellte Rolle 8 mit den übrigen Planheitsstellgliedern eines Walzwerkes 4 zu kombinieren.In the following, the invention will be explained by way of example with reference to rolling (cf. Fig. 1 to 4 ). Between the Einlaufspannrollenensatz 2 and the Auslaufspannrollensatz 3 is according to Fig. 1 and 3 a rolling mill 4 is arranged. According to Fig. 1 can be the rolling stand 4 directly upstream or downstream tensioning roller 8 of a tensioning roller set 2 within the belt running plane B pivot and consequently skew. In this way, the strip tension concentrates on one side, ie in the region of one edge of the strip, the strip tension increases while it decreases on the other edge of the strip. The inclination of the roller 8 within the belt running plane B is in Fig. 2 (heavily oversubscribed). The pivot angle α in the strip running plane is usually only 0 to 2 °, preferably only 0 to 1 °. The resulting tensile stress distribution Z is in Fig. 2 also indicated. In the manner shown can be z. B. correct a band saber. In the illustrated embodiment, the relevant roller 8 need not be driven. In the context of the invention, however, both (rotating) driven and non-driven tensioning rollers are always included. Incidentally, in Fig. 1 recognizable that it is expedient if the wrap angle is about 180 ° or more. The misalignment of the roller 8 and the adjustment angle α is - as explained - relatively small, so that a displacement of a bearing 9 of less than one millimeter can be sufficient. Surprisingly enough such small adjustments, so that at the same time problems with an impermissible belt run are avoided. In order to expand the overall flatness adjustment range, it is possible to combine the illustrated roller 8 with the other flatness actuators of a rolling mill 4.

Während bei dem Ausführungsbeispiel nach Fig. 1 die Spannrolle 8 in der Bandlaufebene B verschwenkt wird, zeigt Fig. 3 eine Ausführungsform, bei welcher die dem Walzgerüst 4 direkt vor- oder nachgeordnete Rolle 8 senkrecht zur Bandlaufebene B verschwenkt wird. Fig. 4 macht deutlich, dass sich auf diese Weise die Zugspannungen Z im Band 1 auf die Bandkanten bzw. Ränder konzentrieren, folglich liegt im Bereich der Bandkanten eine höhere Bandzugspannung vor, als im Bereich der Bandmitte. Als Konsequenz erhöht sich an den Rändern die Walzreduktion bzw. bei Dressiergerüsten der Dressiergrad und es entsteht eine Tendenz zu Randwelligkeiten, so dass sich durch geeignete Verfahrensführung Mittenwelligkeiten kompensieren lassen. Auch bei diesem Ausführungsbeispiel ist es zweckmäßig, die Einstellung der Schieflage mit den übrigen Planheitsstellgliedern des Walzwerkes abzustimmen, um den Gesamtplanheitsstellbereich zu erweitern.While in the embodiment according to Fig. 1 the tension roller 8 is pivoted in the strip running plane B, shows Fig. 3 an embodiment in which the roll stand 4 directly upstream or downstream roller 8 is pivoted perpendicular to the strip plane B. Fig. 4 makes it clear that in this way the tensile stresses Z in the band 1 concentrate on the band edges or margins, consequently a higher band tensile stress is present in the region of the band edges than in the area of the band center. As a consequence, the rolling reduction at the edges or, in the case of temper rolling stands, the degree of temper rolling increases and there is a tendency for edge waviness, so that suitable waviness can be compensated for by suitable process control. Also in this embodiment, it is expedient to tune the adjustment of the imbalance with the other flatness actuators of the rolling mill in order to expand the Gesamtplanheitsstellbereich.

In ähnlicher Weise wie bei dem Walzen gemäß Fig. 1 bis 4 lässt sich der erfindungsgemäße Effekt auch beim Streckbiegerichten erzielen. Eine solche Ausführungsform ist in den Figuren nicht dargestellt. An der Stelle im Band, wo eine höhere Zugspannung als an den anderen Stellen herrscht, wird das Band stärker plastisch gestreckt und folglich verlängert.In a similar manner as in the rolling according to Fig. 1 to 4 the effect according to the invention can also be achieved in the case of stretch bending. Such an embodiment is not shown in the figures. At the point in the band, where there is a higher tension than at the other points, the band is stretched more plastically and thus lengthened.

Fig. 5 zeigt eine erfindungsgemäße Zugreckvorrichtung. Diese weist ebenfalls einen Einlaufspannrollensatz 2 zum Zugaufbau und einen Auslaufspannrollensatz 3 zum Zugabbau auf. Zwischen dem Einlaufspannrollensatz und dem Auslaufspannrollensatz ist ein weiterer Spannrollensatz 6 angeordnet, der als Zugreckrollensatz mit zwei Zugreckrollen 7, 8 ausgebildet ist. Zwischen diesen beiden Zugreckrollen 7, 8 wird die Reckzone R gebildet, innerhalb der die plastische Verformung zur Beeinflussung der Bandplanheit erfolgt. Erfindungsgemäß ist nun vorgesehen, dass zumindest eine dieser Zugreckrollen 7, 8, z. B. die auslaufseitige Zugreckrolle 8, in der Bandlaufebene B und/oder quer zur Bandlaufebene B verschwenkbar ist. Bandlaufebene B meint auch hier die Bandlaufebene B im Bereich der Verformungszone und folglich im Bereich der Reckzone R. In der Fig. 5 ist lediglich eine Verstellung quer bzw. senkrecht zur Bandlaufebene B angedeutet. Beim Zugrecken liegt die Zugspannung in der Reckzone in der Größenordnung der Streckgrenze. Bei idealplastischen Bedingungen, bei denen keine Kaltverfestigung auftritt, ist davon auszugehen, dass das Verschwenken die Zugspannungsverteilung im Band in der Reckzone nicht beeinflusst. Das Verschwenken beeinflusst jedoch unmittelbar den Planiergrad, da das plastische Dehnungsverhalten des Bandes in der Reckzone von der Winkelstellung der Rolle abhängt. Die verstellbare Rolle 8 funktioniert gleichsam als weiteres Planheitsstellglied. Fig. 5 shows a drafting device according to the invention. This also has a Einlaufspannrollensatz 2 for train construction and a Auslaufspannrollensatz 3 for train reduction. Between the Einlaufspannrollensatz and the Auslaufspannrollensatz another set of tension rollers 6 is arranged, which is designed as Zugreckrollensatz with two Zugreckrollen 7, 8. Between these two access rollers 7, 8, the stretching zone R is formed, within which the plastic deformation takes place to influence the band flatness. According to the invention it is now provided that at least one of these Zugreckrollen 7, 8, z. B. the outlet side Zugreckrolle 8, in the strip running plane B and / or transverse to the strip plane B is pivotable. Tape running plane B also here means the strip running plane B in the region of the deformation zone and consequently in the region of the stretching zone R. In the Fig. 5 only one adjustment is indicated transversely or perpendicular to the tape plane B. When drawing the tensile stress in the stretching zone in the order of the yield strength. In ideal plastic conditions where no strain hardening occurs, it is believed that pivoting does not affect the tensile stress distribution in the belt in the stretch zone. However, the pivoting directly influences the degree of planing, since the plastic strain behavior of the strip in the stretching zone depends on the angular position of the roll. The adjustable roller 8 works as it were as another flatness actuator.

Stets ist es zweckmäßig, wenn in die beschriebenen Anlagen eine Planheitsmessvorrichtung 10 integriert wird. Dabei kann es sich um eine Planheitsmessrolle 10 oder auch um eine Planheitsmessvorrichtung anderer Art, z. B. eine berührungslose Planheitsmessvorrichtung, handeln. In Fig. 5 ist angedeutet, dass es zweckmäßig ist, diese Planheitsmessvorrichtung 10 hinter dem Auslaufspannrollensatz 3 anzuordnen. Durch eine nachfolgende Messung der Zugspannungsverteilung im Band nach dem Walzen oder Richten oder Zugrecken kann die Einstellung der beschriebenen erfindungsgemäßen Spannrolle 8 gesteuert und/oder geregelt werden. Ggf. kann ein geschlossener Planheitsregelkreis eingerichtet werden. Die Erfindung lässt sich dabei auch mit anderen Planheitsstellgliedern wie z. B. einer konturvariablen Rolle kombinieren.It is always expedient if a flatness measuring device 10 is integrated in the systems described. This may be a flatness measuring roll 10 or even a planarity measuring device of another kind, for. B. a non-contact flatness measuring device act. In Fig. 5 it is indicated that it is expedient to arrange this flatness measuring device 10 behind the outlet tensioning roller set 3. By a subsequent measurement of the tension distribution in the belt after rolling or straightening or stretching, the adjustment of the described tensioning roller 8 according to the invention can be controlled and / or regulated. Possibly. a closed flatness control loop can be set up. The invention can also be used with other planarity actuators such. B. combine a contour variable role.

Claims (10)

Vorrichtung zum Planieren von Metallbändern (1), insbesondere dünnen Metallbändern aus z. B. Aluminiumlegierungen, im Zuge des Walzens, Richtens und/oder Zugreckens,
mit zumindest einem Spannrollensatz (2, 3, 6) mit zumindest zwei Spannrollen (7, 8), dadurch gekennzeichnet, dass
zumindest eine der Spannrollen (7, 8) des Spannrollensatzes (2, 3, 6) in der Bandlaufebene (B) und/oder quer zur Bandlaufebene (B) verschwenkbar ist.
Device for leveling metal strips (1), in particular thin metal strips of z. As aluminum alloys, in the course of rolling, straightening and / or stretching,
with at least one tensioning roller set (2, 3, 6) with at least two tensioning rollers (7, 8), characterized in that
at least one of the tensioning rollers (7, 8) of the tensioning roller set (2, 3, 6) in the belt running plane (B) and / or transversely to the belt running plane (B) is pivotable.
Vorrichtung nach Anspruch 1, mit zumindest einem als Einlaufspannrollensatz (2) ausgebildeten Spannrollensatz zum Zugaufbau und zumindest einem als Auslaufspannrollensatz (3) ausgebildeten Spannrollensatz zum Zugabbau, wobei zwischen dem Einlaufspannrollensatz (2) und dem Auslaufspannrollensatz (3) zumindest ein Walzgerüst (4), eine Richtvorrichtung und/oder eine Zugreckvorrichtung (5) mit zumindest einem als Zugreckrollensatz (6) ausgebildeten Spannrollensatz angeordnet ist, dadurch gekennzeichnet, dass zumindest eine der Spannrollen (7, 8) zumindest eines der Spannrollensätze (2, 3, 6) in der Bandlaufebene (B) und/oder quer zur Bandlaufebene (B) verschwenkbar ist.Apparatus according to claim 1, comprising at least one tensioning roller set designed as an inlet tensioning roller set (2) for pulling construction and at least one tensioning roller set designed as outlet tensioning roller set (3), at least one rolling stand (4) between the inlet tensioning roller set (2) and the outlet tensioning roller set (3). a straightening device and / or a draw-stretching device (5) with at least one tensioning roller set (6) is arranged, characterized in that at least one of the tensioning rollers (7, 8) at least one of the tensioning roller sets (2, 3, 6) in the strip running plane (B) and / or transversely to the belt running plane (B) is pivotable. Vorrichtung nach Anspruch 1 oder 2, wobei die Spannrolle zumindest eine der Spannrollen (7, 8) beidseitig in Lagerstellen (9) drehbar gelagert ist, dadurch gekennzeichnet, dass die Position einer Lagerstelle (9) oder beider Lagerstellen (9) in der Bandlaufebene (B) und/oder quer zur Bandlaufebene (B) einstellbar ist.Apparatus according to claim 1 or 2, wherein the tension roller at least one of the tensioning rollers (7, 8) is rotatably mounted on both sides in bearing points (9), characterized in that the position of a bearing point (9) or both bearing points (9) in the strip running plane ( B) and / or transversely to the belt running plane (B) is adjustable. Vorrichtung nach Anspruch 3, dadurch gekennzeichnet, dass die Position einer Lagerstelle (9) oder beider Lagerstellen (9) mittels einer oder mehrerer Positions-Stellantriebe einstellbar ist.Apparatus according to claim 3, characterized in that the position of a bearing point (9) or both bearing points (9) by means of one or more position actuators is adjustable. Vorrichtung nach einem der Ansprüche 1 bis 4, dadurch gekennzeichnet, dass das Metallband (1) um die verschwenkbare Spannrolle (8) unter einem Umschlingungswinkel von zumindest 45°, vorzugsweise zumindest 90°, besonders bevorzugt zumindest 180° geführt ist.Device according to one of claims 1 to 4, characterized in that the metal strip (1) is guided around the pivotable tensioning roller (8) at a wrap angle of at least 45 °, preferably at least 90 °, more preferably at least 180 °. Vorrichtung nach einem der Ansprüche 1 bis 5, dadurch gekennzeichnet, dass dem Spannrollensatz (2, 3, 6) zumindest eine Planheitsmessvorrichtung (10) nachgeordnet ist, welche mit einer der verschwenkbaren Spannrolle (8) zugeordneten Steuer- und/oder Regelvorrichtung verbunden ist.Device according to one of claims 1 to 5, characterized in that the tensioning pulley set (2, 3, 6) at least one flatness measuring device (10) is arranged downstream, which is connected to a pivotable tensioning roller (8) associated control and / or regulating device. Verfahren zum Planieren von Metallbändern im Zuge des Walzens, Richtens und/oder Zugreckens, insbesondere mit einer Vorrichtung nach einem der Ansprüche 1 bis 6,
wobei das unter Bandzug stehende Metallband zumindest bereichsweise plastisch verformt wird, dadurch gekennzeichnet, dass durch Verschwenken zumindest einer Spannrolle ein über die Bandbreite variabler Planiergrad eingestellt wird.
Method for leveling metal strips in the course of rolling, straightening and / or drawing, in particular with a device according to one of claims 1 to 6,
wherein the metal strip under strip tension is plastically deformed at least in certain areas, characterized in that a degree of planing which is variable over the strip width is set by pivoting at least one tensioning roller.
Verfahren nach Anspruch 7, dadurch gekennzeichnet, dass die Spannrolle zur Einstellung des Planiergrades in der Bandebene und/oder quer zur Bandebene um einen Winkel α = 0° bis 5°, vorzugsweise 0° bis 3° verschwenkt wird.A method according to claim 7, characterized in that the tensioning roller for adjusting the degree of planing in the belt plane and / or transversely to the belt plane by an angle α = 0 ° to 5 °, preferably 0 ° to 3 ° is pivoted. Verfahren nach Anspruch 7 oder 8, dadurch gekennzeichnet, dass die Spannrolle zum Einstellen des Planiergrades im Bereich einer Lagerstelle oder im Bereich beider Lagerstellen in der Bandebene und/oder quer zur Bandebene um 0 bis 2 mm, z. B. 0 bis 1 mm verstellt wird.A method according to claim 7 or 8, characterized in that the tensioning roller for adjusting the degree of planing in the region of a bearing or in the region of both bearing points in the band level and / or transversely to the band level by 0 to 2 mm, z. B. 0 to 1 mm is adjusted. Verfahren nach einem der Ansprüche 7 bis 9, dadurch gekennzeichnet, dass die Planheit des Bandes ermittelt und die Spannrolle in Abhängigkeit von der ermittelten Planheit gesteuert und/oder geregelt wird.Method according to one of claims 7 to 9, characterized in that the flatness of the tape is determined and the tension roller is controlled and / or regulated in dependence on the determined flatness.
EP08000278A 2007-02-07 2008-01-09 Method for levelling metal strips Not-in-force EP1955786B1 (en)

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CZ308632B6 (en) * 2014-10-20 2021-01-20 Berndorf Band Gmbh A method and device for straightening a metal strip and a metal strip produced by this method and the apparatus

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CN103008401A (en) * 2012-12-21 2013-04-03 鞍钢股份有限公司 Straightening method of tempered steel plate
CN103920714B (en) * 2013-01-15 2016-06-29 宝山钢铁股份有限公司 Skin pass rolling tension amplification method and device
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CN103341528A (en) * 2013-07-12 2013-10-09 鞍钢股份有限公司 Cold straightening method for buckling steel plate with thickness less than 6mm
CZ308632B6 (en) * 2014-10-20 2021-01-20 Berndorf Band Gmbh A method and device for straightening a metal strip and a metal strip produced by this method and the apparatus

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DE102007006810B3 (en) 2008-10-02
EP1955786B1 (en) 2012-06-27
CA2619628A1 (en) 2008-08-07
RU2395359C2 (en) 2010-07-27
CN101239356A (en) 2008-08-13
US20080196466A1 (en) 2008-08-21
KR101489344B1 (en) 2015-02-03
RU2008104606A (en) 2009-08-20
CN101239356B (en) 2013-05-01
ES2389700T3 (en) 2012-10-30
US8365565B2 (en) 2013-02-05
KR20080074047A (en) 2008-08-12

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