EP3491156A1 - Device and method for forming a transverse curvature on a metal strip leaving an annealing furnace - Google Patents

Device and method for forming a transverse curvature on a metal strip leaving an annealing furnace

Info

Publication number
EP3491156A1
EP3491156A1 EP17748422.7A EP17748422A EP3491156A1 EP 3491156 A1 EP3491156 A1 EP 3491156A1 EP 17748422 A EP17748422 A EP 17748422A EP 3491156 A1 EP3491156 A1 EP 3491156A1
Authority
EP
European Patent Office
Prior art keywords
metal strip
gas
transverse curvature
strip
support nozzle
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
EP17748422.7A
Other languages
German (de)
French (fr)
Other versions
EP3491156B1 (en
Inventor
Josef Köppl
Alexander VITS
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
SMS Group GmbH
Original Assignee
SMS Group GmbH
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by SMS Group GmbH filed Critical SMS Group GmbH
Publication of EP3491156A1 publication Critical patent/EP3491156A1/en
Application granted granted Critical
Publication of EP3491156B1 publication Critical patent/EP3491156B1/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C21—METALLURGY OF IRON
    • C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
    • C21D9/00—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor
    • C21D9/52—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor for wires; for strips ; for rods of unlimited length
    • C21D9/54—Furnaces for treating strips or wire
    • C21D9/56—Continuous furnaces for strip or wire
    • C21D9/63—Continuous furnaces for strip or wire the strip being supported by a cushion of gas
    • C—CHEMISTRY; METALLURGY
    • C21—METALLURGY OF IRON
    • C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
    • C21D9/00—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor
    • C21D9/52—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor for wires; for strips ; for rods of unlimited length
    • C21D9/54—Furnaces for treating strips or wire
    • C21D9/56—Continuous furnaces for strip or wire
    • C21D9/573—Continuous furnaces for strip or wire with cooling
    • C—CHEMISTRY; METALLURGY
    • C21—METALLURGY OF IRON
    • C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
    • C21D1/00—General methods or devices for heat treatment, e.g. annealing, hardening, quenching or tempering
    • C21D1/18—Hardening; Quenching with or without subsequent tempering
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F27—FURNACES; KILNS; OVENS; RETORTS
    • F27B—FURNACES, KILNS, OVENS, OR RETORTS IN GENERAL; OPEN SINTERING OR LIKE APPARATUS
    • F27B9/00—Furnaces through which the charge is moved mechanically, e.g. of tunnel type; Similar furnaces in which the charge moves by gravity
    • F27B9/14—Furnaces through which the charge is moved mechanically, e.g. of tunnel type; Similar furnaces in which the charge moves by gravity characterised by the path of the charge during treatment; characterised by the means by which the charge is moved during treatment
    • F27B9/20—Furnaces through which the charge is moved mechanically, e.g. of tunnel type; Similar furnaces in which the charge moves by gravity characterised by the path of the charge during treatment; characterised by the means by which the charge is moved during treatment the charge moving in a substantially straight path tunnel furnace
    • F27B9/24—Furnaces through which the charge is moved mechanically, e.g. of tunnel type; Similar furnaces in which the charge moves by gravity characterised by the path of the charge during treatment; characterised by the means by which the charge is moved during treatment the charge moving in a substantially straight path tunnel furnace being carried by a conveyor
    • F27B9/2476—Furnaces through which the charge is moved mechanically, e.g. of tunnel type; Similar furnaces in which the charge moves by gravity characterised by the path of the charge during treatment; characterised by the means by which the charge is moved during treatment the charge moving in a substantially straight path tunnel furnace being carried by a conveyor the conveyor being constituted by air cushion

Definitions

  • the invention relates to a device for forming a transverse curvature on a metal strip emerging from an annealing furnace.
  • the invention further relates to a method for forming a transverse curvature on a metal strip emerging from an annealing furnace.
  • a metal strip is usually made using a continuous casting process.
  • the metal strip can be heated to create a desired microstructure in an annealing furnace. Subsequently, the created microstructure can be "frozen” by rapid or gentle cooling (hard or soft quenching), also known as rough cooling, whereby the metal strip is first passed through the annealing furnace and then through a cooling line.
  • the metal strip can be provided with a transverse arc, for example, circular arc-shaped.
  • a transverse curvature with mechanical guide means, in particular rollers or shafts, on a flat metal strip.
  • the mechanical guide means may be arranged in a heating area and in a cold area.
  • mechanical guide means for forming the transverse curvature on the metal strip physical contact between the mechanical guide means and the metal strip may cause damage, in particular scratches and the like, on the surface of the metal strip.
  • An object of the invention is to allow formation of a transverse curvature on a metal strip emerging from an annealing furnace without adversely affecting the surface finish of the metal strip.
  • the transverse curvature is imposed contactlessly by means of the gas cushion on, for example, the metal strip, which is initially planar. There are no mechanical means used to form the transverse curvature of the metal strip, which are in physical contact with the metal strip.
  • the non-contact embodiment of the transverse curvature on the metal strip according to the invention it is therefore not possible for any mechanical damage to the surface of the metal strip to occur.
  • the formation of the transverse curvature on the exiting from the annealing metal strip is possible without affecting the surface finish of the metal strip.
  • the device may also comprise two or more support jet arrangements arranged in the strip running direction offset from one another and below the strip run of the metal strip, each being adapted to produce a gas cushion supporting the metal strip from below between the metal strip and the support nozzle arrangement such that through the gas cushion on the metal strip the transverse curvature can be formed without contact.
  • the mutually offset in the strip running direction gas cushion can be designed differently in order to force the transverse curvature step by step to the metal strip.
  • the support nozzle assembly may be disposed outside of the annealing furnace or formed as an output side unit of the annealing furnace.
  • the device may additionally comprise at least one nozzle arrangement arranged above the strip run of the metal strip, which is arranged to generate a gas cushion between the metal strip and the nozzle arrangement which acts on the metal strip from above such that the transverse curvature can be formed by the gas cushion on the metal strip.
  • the nozzle assembly may be vertically disposed above a support nozzle assembly.
  • the gas cushion may be, for example, an air cushion.
  • the gas cushion may be formed by a gas having a composition other than air.
  • a metal strip, in particular aluminum strip can first be subjected to solution annealing in a floating strip annealing furnace, wherein the metal strip in the floating strip annealing furnace is guided without contact by means of floating nozzles.
  • the metal strip can be guided in the floating strip furnace with a characteristic of the strip guide in the SINUS. Subsequently, the metal strip, in particular at the exit from the Schwebiegeglühen and in the transition to a water cooler, with the Schwebiegeglühofen in
  • the transverse curvature are imposed contactless.
  • the metal strip can then be fed with the transverse curvature of a rough cooling and a downstream high-performance air cooling, whereby the transverse curvature of the metal strip is "frozen.”
  • the metal strip is guided by means of floating nozzles also during the rough cooling and during the high-performance air cooling
  • the metal strip can be guided completely contact-free, so that the surface quality of the metal strip is not impaired by physical contact with mechanical guiding means and a higher quality metal strip can be produced
  • the transverse curvature of the metal strip is preferably given in the form of an upwardly curved, positive or concave transverse curvature s metal bands, which in particular allows a contactless guidance of the metal strip without mechanical guide means in a cooling area or a cooling line.
  • the transverse curvature also has the advantage that a cooling water sprayed from above onto the metal strip flows off uniformly and under the action of gravity automatically over the strip edges from the surface of the metal strip
  • the metal strip has a higher flatness and a lower internal mechanical stress in a downstream cooling region, so that a stretch-bending straightener must be used less intensively in the further production process in order to achieve a desired flatness To reach metal bands.
  • the support nozzle arrangement comprises at least one gas nozzle extending essentially across the width of the metal strip, transversely to a strip running direction of the metal strip.
  • the gas for forming the gas cushion emerges from the gas nozzle.
  • the gas nozzle extends exactly over the width of the metal strip.
  • the apparatus may include a blower or the like for generating a pressurized gas, with which the gas nozzle is supplied via at least one fluid line.
  • the support nozzle arrangement may alternatively have at least two gas nozzles arranged offset to one another in the width direction of the metal strip or in the strip running direction.
  • the gas nozzle comprises at least one outlet opening with a continuous or graduated transverse curvature corresponding to the transverse curvature to be formed on the metal strip.
  • the outlet opening preferably extends substantially over the entire width of the metal strip.
  • the transverse curvature of the outlet opening can be achieved in that the center of the gas nozzle is arranged higher than the sides of the gas nozzle.
  • the gas cushion has by the transverse curvature of the outlet opening a corresponding transverse curvature, which serves to form the transverse curvature of the metal strip.
  • the gas exits the length of the, for example, slot-shaped, outlet opening to produce a uniform air cushion.
  • a width of the support nozzle arrangement which is transverse to the strip running direction of the metal strip can be varied.
  • the width of the support nozzle arrangement or the gas nozzle can be varied to adapt to the respective width of the metal strip.
  • the variation of the width of the support nozzle arrangement or the gas nozzle can be automated by means of a controllable actuator or manually.
  • the device can be a signal with the actuator
  • the support nozzle arrangement is arranged vertically adjustable.
  • the positioning of the support nozzle arrangement or the gas nozzle can be adapted to the respective strip run of the metal strip.
  • this can be adapted to the respective weight of the metal strip, the admission of the metal strip with the gas cushion or the supporting effect of the gas cushion.
  • the support nozzle assembly or the gas nozzle in a lighter weight metal band deeper, ie at a greater distance to the metal strip, and higher weight metal band, that are arranged at a smaller distance to the metal strip.
  • the height adjustment of the support nozzle arrangement or the gas nozzle can be automated by means of a controllable actuator or manually.
  • the device may have a signaling technology connected to the actuator control and / or control electronics, the data supplied to the respective weight, the material thickness and / or width of the metal strip and with which these data are processed to generate actuating signals for the actuator ,
  • a strength of a gas mass flow emerging from the support nozzle arrangement can be varied.
  • the supporting effect of the gas cushion can be varied.
  • the loading of the metal strip with the gas cushion or the supporting effect of the gas cushion can be adapted to the respective weight of the metal strip.
  • the weight of the gas mass flow may be lower for a lighter weight metal band than for a heavier weight metal band.
  • the variation of the strength of the gas mass flow can be automated or manual.
  • the device may have a signaling and control electronics connected to a blower of the device,
  • the data is supplied to the respective weight, the material thickness and / or width of the metal strip and with which these data are processed to generate control signals for the fan. It is furthermore advantageous if a temperature of the gas emerging from the support nozzle arrangement can be varied.
  • the temperature of the gas can be selected, for example, such that the metal strip is kept warm or cooled via the gas cushion.
  • the temperature of the gas can be selected, for example, as a function of a temperature of the metal strip emerging from the annealing furnace.
  • the apparatus may include at least one heater for heating the gas prior to exiting the support nozzle assembly.
  • the variation of the temperature of the gas can be automated or manual.
  • the device may have a signaling and control electronics connected to a heater, the data supplied to the respective temperature of the metal strip and with which these data are processed to generate control signals for the heater.
  • the transverse curvature is formed without contact on the metal strip.
  • the advantages mentioned above with respect to the device are connected accordingly.
  • the above apparatus can be used for carrying out the method.
  • the transverse curvature can be formed on the metal strip without impairing the surface quality of the metal strip.
  • a gas cushion supporting the metal band from below is produced in such a way that the transverse curvature is formed by the gas cushion on the metal band.
  • Page 7 be used according to one of said embodiments or any combination of at least two of the embodiments. Consequently, with this embodiment, the advantages mentioned above with respect to the device are connected accordingly.
  • a transverse to a strip running direction of the metal strip width of the gas cushion is varied.
  • the advantages mentioned above with respect to the corresponding embodiment of the device are connected accordingly.
  • the design variants mentioned for this embodiment of the device can be used to implement this embodiment of the method.
  • the width of the support nozzle assembly or gas nozzle can be varied accordingly to vary the width of the gas cushion.
  • a further advantageous embodiment provides that a thickness of a gas mass flow emerging from the support nozzle arrangement is varied.
  • the advantages mentioned above with respect to the corresponding embodiment of the device are connected accordingly.
  • the design variants mentioned for this embodiment of the device can be used to implement this embodiment of the method.
  • Figure 1 a schematic representation of an embodiment of an inventive device
  • Figure 2 is a schematic representation of a support nozzle assembly of another embodiment of an inventive device.
  • Figure 1 shows a schematic representation of an embodiment of an inventive device 1 for forming a transverse curvature on a emerging from an annealing furnace 2, flat formed metal strip 3.
  • a cooling line 5 In the tape running direction 4 is followed by the device 1, a cooling line 5 at. Both in the annealing furnace 2 and in the cooling line 5 (water cooler), the metal strip 3 is guided without contact by means of floating nozzles, not shown.
  • the device 1 comprises a arranged below a strip of the metal strip 3 support nozzle assembly 6, which is adapted to produce a metal band 3 from below supporting gas cushion 7 between the metal strip 3 and the support nozzle assembly 6 such that through the gas cushion 7 on the metal strip 3 the Transverse curvature can be formed without contact.
  • the nozzle assembly 6 comprises transversely to the strip running direction 4 of the metal strip 3 a substantially over the entire width of the metal strip 3 extending gas nozzle 8.
  • the gas nozzle 8 comprises an outlet opening 9 with a continuously or stepped formed transverse curvature corresponding to the trachea to be formed on the metal strip 3 transverse curvature, as for example from FIG.
  • Page 9 2 can be seen.
  • a width of the support nozzle arrangement 6 or of the gas nozzle 8 given transversely to the strip running direction 4 of the metal strip 3 can be variable.
  • the support nozzle arrangement 6 or the gas nozzle 8 can be arranged to be height-adjustable according to the double arrow 10.
  • a thickness of a gas mass flow emerging from the support nozzle arrangement 6 or the gas nozzle 8 can be variable.
  • the device 1, a fan 1 1 and a signal technically connected to the fan 1 1 control and / or control electronics 12 for controlling the blower 1 1 have.
  • the control and / or regulating electronics 12 can be supplied with data which are processed by the control and / or regulating electronics 12 for controlling the blower 1 1 or the variation of the intensity of the gas mass flow.
  • a temperature of the gas leaving the support nozzle arrangement 6 or the gas nozzle 8 can be variable.
  • the device 1 may have a blower 1 1 connected downstream heater 13, which is technically connected to the control and / or control electronics 12 and controllable with this.
  • the control and / or regulating electronics 12 can be supplied with data which are processed by the control and / or regulating electronics 12 for controlling the heating device 13 or the variation of the temperature of the gas.
  • FIG. 2 shows a schematic representation of a support nozzle arrangement 6 of a further exemplary embodiment of a device 1 according to the invention for forming a transverse curvature on a planely formed metal strip 3 emerging from an annealing furnace, not shown.
  • FIG. 2 shows the positive or concave transverse curvature of the metal strip 3.
  • the support nozzle arrangement 6 is arranged below a strip run of the metal strip 3 and is set up, a gas cushion 7 supporting the metal strip 3 from below, between the metal strip 3 and the support nozzle arrangement 6
  • the nozzle assembly 6 comprises transversely to a strip running direction 4 of the metal strip 3 a substantially over the entire width of the metal strip 3 extending gas nozzle 8.
  • the gas nozzle 8 comprises an outlet opening 9 with a continuously formed transverse curvature corresponding to the trachea to be formed on the metal strip 3 transverse curvature.
  • a width of the support nozzle arrangement 6 or of the gas nozzle 8 given transversely to the strip running direction 4 of the metal strip 3 can be variable.
  • the support nozzle arrangement 6 or the gas nozzle 8 can be arranged to be height-adjustable according to the double arrow 10.
  • a thickness of a gas mass flow emerging from the support nozzle arrangement 6 or the gas nozzle 8 can be variable.
  • the device 1, a fan 1 1 and a signal technically connected to the fan 1 1 control and / or control electronics 12 for controlling the blower 1 1 have.
  • the control and / or regulating electronics 12 can be supplied with data which are processed by the control and / or regulating electronics 12 for controlling the blower 1 1 or the variation of the intensity of the gas mass flow.
  • a temperature of the gas leaving the support nozzle arrangement 6 or the gas nozzle 8 can be variable.
  • the device 1 may have a blower 1 1 connected downstream heater 13, which is technically connected to the control and / or control electronics 12 and controllable with this.
  • the control and / or regulating electronics 12 can be supplied with data which are processed by the control and / or regulating electronics 12 for controlling the heating device 13 or the variation of the temperature of the gas.

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  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • Mechanical Engineering (AREA)
  • Materials Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Heat Treatment Of Strip Materials And Filament Materials (AREA)

Abstract

The invention relates to a device (1) for forming a transverse curvature on a metal strip (3) leaving an annealing furnace (2). In order to permit the formation of a transverse curvature on a metal strip (3) leaving an annealing furnace (2), without impairing the surface quality of the metal strip (3), the invention proposes that the device (1) has at least one support nozzle arrangement (6) mounted under a length of metal strip (3), which arrangement is designed to generate, between the metal strip (3) and the support nozzle arrangement (6), a gas cushion (7) that supports the metal strip (3) from below such that the transverse curvature on the metal strip (3) can be formed in a contact-free manner by means of the gas cushion (7).

Description

Vorrichtung und Verfahren zum Ausbilden einer Querwölbung an einem aus einem Glühofen austretenden Metallband  Device and method for forming a transverse curvature on a metal strip emerging from an annealing furnace
Die Erfindung betrifft eine Vorrichtung zum Ausbilden einer Querwölbung an einem aus einem Glühofen austretenden Metallband. The invention relates to a device for forming a transverse curvature on a metal strip emerging from an annealing furnace.
Die Erfindung betrifft des Weiteren ein Verfahren zum Ausbilden einer Querwölbung an einem aus einem Glühofen austretenden Metallband. Ein Metallband wird üblicherweise unter Verwendung eines Stranggießverfahrens hergestellt. Das Metallband kann zur Schaffung einer gewünschten Gefügestruktur in einem Glühofen erwärmt werden. Anschließend kann die geschaffene Gefügestruktur durch eine schnelle oder sanfte Kühlung (Hard- bzw. Soft- Quench), auch Schroffkühlung genannt, „eingefroren" werden. Das Metallband wird hierbei zunächst durch den Glühofen und anschließend durch eine Kühlstraße geführt. The invention further relates to a method for forming a transverse curvature on a metal strip emerging from an annealing furnace. A metal strip is usually made using a continuous casting process. The metal strip can be heated to create a desired microstructure in an annealing furnace. Subsequently, the created microstructure can be "frozen" by rapid or gentle cooling (hard or soft quenching), also known as rough cooling, whereby the metal strip is first passed through the annealing furnace and then through a cooling line.
Um eine Formstabilität und Planheit eines Metallbands zu erhöhen und somit seine Förderung beispielsweise durch eine Kühlstrecke zu erleichtern, kann das Metallband mit einer beispielsweise kreisbogenförmig ausgebildeten Querwölbung versehen werden. Beispielsweise ist es aus der DE 100 46 273 A1 bekannt, einem planen Metallband eine solche Querwölbung mit mechanischen Führungsmitteln, insbesondere Rollen oder Wellen, aufzuzwingen. Die mechanischen Führungsmittel können in einem Erwärmungsbereich und in einem Kaltbereich angeordnet sein. Durch diese Verwendung von mechanischen Führungsmitteln zur Ausbildung der Querwölbung an dem Metallband kann es durch den körperlichen Kontakt zwischen den mechanischen Führungsmitteln und dem Metallband zu Beschädigungen, insbesondere Kratzern und dergleichen, an der Oberfläche des Metallbands kommen. Zudem kann sich eine Fixierung bzw. Führung des Metallbands mit mechanischen Führungsmitteln innerhalb einer In order to increase dimensional stability and flatness of a metal strip and thus facilitate its promotion, for example, by a cooling section, the metal strip can be provided with a transverse arc, for example, circular arc-shaped. For example, it is known from DE 100 46 273 A1 to impose such a transverse curvature with mechanical guide means, in particular rollers or shafts, on a flat metal strip. The mechanical guide means may be arranged in a heating area and in a cold area. Through the use of mechanical guide means for forming the transverse curvature on the metal strip, physical contact between the mechanical guide means and the metal strip may cause damage, in particular scratches and the like, on the surface of the metal strip. In addition, a fixation or guidance of the metal strip with mechanical guide means within a
Seite 1 Kühlstraße nachteilig auf eine Bandmittenregelung und eine Bandzugregelung auswirken. page 1 Cooling road adversely affect a stripline control and a strip tension control.
Eine Aufgabe der Erfindung ist es, eine Ausbildung einer Querwölbung an einem aus einem Glühofen austretenden Metallband zu ermöglichen, ohne die Oberflächenbeschaffenheit des Metallbands zu beeinträchtigen. An object of the invention is to allow formation of a transverse curvature on a metal strip emerging from an annealing furnace without adversely affecting the surface finish of the metal strip.
Diese Aufgabe wird durch die unabhängigen Patentansprüche gelöst. Vorteilhafte Ausgestaltungen sind insbesondere in den abhängigen Patentansprüchen angegeben, die jeweils für sich genommen oder in verschiedener Kombination miteinander einen Aspekt der Erfindung darstellen können. This object is solved by the independent claims. Advantageous embodiments are specified in particular in the dependent claims, each of which, taken alone or in various combinations with each other, can represent an aspect of the invention.
Eine erfindungsgemäße Vorrichtung zum Ausbilden einer Querwölbung an einem aus einem Glühofen austretenden Metallband umfasst wenigstens eine unterhalb eines Bandlaufs des Metallbands angeordnete Stützdüsenanordnung, die eingerichtet ist, ein das Metallband von unten stützendes Gaspolster zwischen dem Metallband und der Stützdüsenanordnung derart zu erzeugen, dass durch das Gaspolster an dem Metallband die Querwölbung berührungslos ausbildbar ist. Erfindungsgemäß wird dem, beispielsweise zunächst plan ausgebildeten, Metallband die Querwölbung berührungslos mittels des Gaspolsters aufgezwungen. Es werden zur Ausbildung der Querwölbung des Metallbands keine mechanischen Mittel eingesetzt, die in einem körperlichen Kontakt mit dem Metallband stehen. Durch die erfindungsgemäße berührungslose Ausbildung der Querwölbung an dem Metallband kann es folglich nicht zu mechanischen Beschädigungen an der Oberfläche des Metallbands kommen. Somit ist mit der erfindungsgemäßen Vorrichtung die Ausbildung der Querwölbung an dem aus dem Glühofen austretenden Metallband möglich, ohne die Oberflächenbeschaffenheit des Metallbands zu beeinträchtigen. A device according to the invention for forming a transverse curvature on a metal strip emerging from an annealing furnace comprises at least one support nozzle arrangement arranged below a strip run of the metal strip, which is arranged to generate a gas cushion supporting the metal strip from below between the metal strip and the support nozzle arrangement such that the gas cushion on the metal band, the transverse curvature can be formed without contact. In accordance with the invention, the transverse curvature is imposed contactlessly by means of the gas cushion on, for example, the metal strip, which is initially planar. There are no mechanical means used to form the transverse curvature of the metal strip, which are in physical contact with the metal strip. As a result of the non-contact embodiment of the transverse curvature on the metal strip according to the invention, it is therefore not possible for any mechanical damage to the surface of the metal strip to occur. Thus, with the device according to the invention, the formation of the transverse curvature on the exiting from the annealing metal strip is possible without affecting the surface finish of the metal strip.
Seite 2 Die Vorrichtung kann auch zwei oder mehrere in Bandlaufrichtung versetzt zueinander und unterhalb des Bandlaufs des Metallbands angeordnete Stützdüsenanordnungen aufweisen, die jeweils eingerichtet sind, ein das Metallband von unten stützendes Gaspolster zwischen dem Metallband und der Stützdüsenanordnung derart zu erzeugen, dass durch das Gaspolster an dem Metallband die Querwölbung berührungslos ausbildbar ist. Hierbei können die in Bandlaufrichtung versetzt zueinander angeordneten Gaspolster unterschiedlich ausgebildet sein, um dem Metallband die Querwölbung schrittweise aufzuzwingen. Die Stützdüsenanordnung kann außerhalb des Glühofens angeordnet oder als eine ausgangsseitige Einheit des Glühofens ausgebildet sein. Page 2 The device may also comprise two or more support jet arrangements arranged in the strip running direction offset from one another and below the strip run of the metal strip, each being adapted to produce a gas cushion supporting the metal strip from below between the metal strip and the support nozzle arrangement such that through the gas cushion on the metal strip the transverse curvature can be formed without contact. Here, the mutually offset in the strip running direction gas cushion can be designed differently in order to force the transverse curvature step by step to the metal strip. The support nozzle assembly may be disposed outside of the annealing furnace or formed as an output side unit of the annealing furnace.
Die Vorrichtung kann zusätzlich wenigstens eine oberhalb des Bandlaufs des Metallbands angeordnete Düsenanordnung aufweisen, die eingerichtet ist, ein das Metallband von oben mit Kraft beaufschlagendes Gaspolster zwischen dem Metallband und der Düsenanordnung derart zu erzeugen, dass durch das Gaspolster an dem Metallband die Querwölbung ausbildbar ist. Hierdurch kann die Ausbildung der Querwölbung an dem Metallband unterstützt werden. Die Düsenanordnung kann vertikal oberhalb einer Stützdüsenanordnung angeordnet sein. The device may additionally comprise at least one nozzle arrangement arranged above the strip run of the metal strip, which is arranged to generate a gas cushion between the metal strip and the nozzle arrangement which acts on the metal strip from above such that the transverse curvature can be formed by the gas cushion on the metal strip. As a result, the formation of the transverse curvature can be supported on the metal strip. The nozzle assembly may be vertically disposed above a support nozzle assembly.
Das Gaspolster kann beispielsweise ein Luftpolster sein. Alternativ kann das Gaspolster durch ein Gas mit einer von Luft abweichenden Zusammensetzung ausgebildet werden. Ein Metallband, insbesondere Aluminiumband, kann zunächst in einem Schwebebandglühofen einem Lösungsglühen unterzogen werden, wobei das Metallband in dem Schwebebandglühofen berührungslos mittels Schwebedüsen geführt wird. Das Metallband kann in dem Schwebebandglühofen mit einer Ausprägung der Bandführung im SINUS geführt werden. Anschließend kann dem Metallband, insbesondere am Austritt aus dem Schwebebandglühofen und im Übergang zu einem Wasserkühler, mit einer dem Schwebebandglühofen in The gas cushion may be, for example, an air cushion. Alternatively, the gas cushion may be formed by a gas having a composition other than air. A metal strip, in particular aluminum strip, can first be subjected to solution annealing in a floating strip annealing furnace, wherein the metal strip in the floating strip annealing furnace is guided without contact by means of floating nozzles. The metal strip can be guided in the floating strip furnace with a characteristic of the strip guide in the SINUS. Subsequently, the metal strip, in particular at the exit from the Schwebiegeglühen and in the transition to a water cooler, with the Schwebiegeglühofen in
Seite 3 Bandlaufrichtung nachgeschalteten erfindungsgemäßen Vorrichtung die Querwölbung berührungslos aufgezwungen werden. Danach kann das Metallband mit der Querwölbung einer Schroffkühlung und einer nachgelagerten Hochleistungs-Luftkühlung zugeführt werden, wodurch die Querwölbung des Metallbands„eingefroren" wird. Vorzugsweise wird das Metallband auch während der Schroffkühlung und während der Hochleistungs-Luftkühlung berührungslos mittels Schwebedüsen geführt. Bei einer entsprechend ausgebildeten Anlage kann somit das Metallband vollständig berührungslos geführt werden, so dass die Oberflächenbeschaffenheit des Metallbands nicht durch einen körperlichen Kontakt mit mechanischen Führungsmitteln beeinträchtig wird und ein Metallband mit höherer Qualität herstellbar ist. Zudem kann während der Abkühlung des Metallbands eine präziser kontrollierbare Formausbildung des Metallbands erfolgen. Die Querwölbung des Metallbands ist vorzugsweise in Form einer nach oben gewölbten, positiven bzw. konkaven Querwölbung gegeben. Die Querwölbung führt zu einer höheren Eigenstabilität des Metallbands, was insbesondere eine berührungslose Führung des Metallbands ohne mechanische Führungsmittel in einem Kühlbereich bzw. einer Kühlstraße ermöglicht. Die Querwölbung hat zudem den Vorteil, dass ein von oben auf das Metallband aufgesprühtes Kühlwasser gleichmäßig und unter Wirkung der Schwerkraft selbsttätig über die Bandkanten von der Oberfläche des Metallbands abfließt. Page 3 Tape running direction downstream device according to the invention the transverse curvature are imposed contactless. The metal strip can then be fed with the transverse curvature of a rough cooling and a downstream high-performance air cooling, whereby the transverse curvature of the metal strip is "frozen." Preferably, the metal strip is guided by means of floating nozzles also during the rough cooling and during the high-performance air cooling Thus, the metal strip can be guided completely contact-free, so that the surface quality of the metal strip is not impaired by physical contact with mechanical guiding means and a higher quality metal strip can be produced The transverse curvature of the metal strip is preferably given in the form of an upwardly curved, positive or concave transverse curvature s metal bands, which in particular allows a contactless guidance of the metal strip without mechanical guide means in a cooling area or a cooling line. The transverse curvature also has the advantage that a cooling water sprayed from above onto the metal strip flows off uniformly and under the action of gravity automatically over the strip edges from the surface of the metal strip.
Durch die erfindungsgemäße berührungslose Ausbildung der Querwölbung an dem Metallband weist das Metallband in einem nachgeschalteten Kühlbereich eine höhere Planheit und eine geringere innere mechanische Spannung auf, so dass ein Streck-Biege-Richter im weiteren Herstellungsprozess weniger stark genutzt werden muss, um eine gewünschte Planheit des Metallbands zu erreichen. Dies führt zu besseren mechanischen Materialeigenschaften des Metallbands, da eine stärkere Nutzung des Streck-Biege-Richters die Materialeigenschaften des Metallbands verschlechtern würde. As a result of the contactless design of the transverse curvature on the metal strip according to the invention, the metal strip has a higher flatness and a lower internal mechanical stress in a downstream cooling region, so that a stretch-bending straightener must be used less intensively in the further production process in order to achieve a desired flatness To reach metal bands. This leads to better mechanical material properties of the metal strip, since a greater use of the stretch-bending straightener would degrade the material properties of the metal strip.
Seite 4 Gemäß einer vorteilhaften Ausgestaltung umfasst die Stützdüsenanordnung quer zu einer Bandlaufrichtung des Metallbands wenigstens eine sich im Wesentlichen über die Breite des Metallbands erstreckende Gasdüse. Das Gas zur Ausbildung des Gaspolsters tritt aus der Gasdüse aus. Vorzugsweise erstreckt sich die Gasdüse exakt über die Breite des Metallbands. Die Vorrichtung kann ein Gebläse oder dergleichen zur Erzeugung eines unter Druck stehenden Gases aufweisen, mit dem die Gasdüse über wenigstens eine Fluidleitung versorgt wird. Die Stützdüsenanordnung kann alternativ wenigstens zwei in Breitenrichtung des Metallbands oder in Bandlaufrichtung versetzt zueinander angeordnete Gasdüsen aufweisen. page 4 According to an advantageous embodiment, the support nozzle arrangement comprises at least one gas nozzle extending essentially across the width of the metal strip, transversely to a strip running direction of the metal strip. The gas for forming the gas cushion emerges from the gas nozzle. Preferably, the gas nozzle extends exactly over the width of the metal strip. The apparatus may include a blower or the like for generating a pressurized gas, with which the gas nozzle is supplied via at least one fluid line. The support nozzle arrangement may alternatively have at least two gas nozzles arranged offset to one another in the width direction of the metal strip or in the strip running direction.
Vorteilhafterweise umfasst die Gasdüse wenigstens eine Austrittsöffnung mit einer kontinuierlich oder abgestuft ausgebildeten Querwölbung entsprechend der an dem Metallband auszubildenden Querwölbung. Die Austrittsöffnung erstreckt sich vorzugsweise im Wesentlichen über die gesamte Breite des Metallbands. Die Querwölbung der Austrittsöffnung kann dadurch erreicht werden, dass die Mitte der Gasdüse höher als die Seiten der Gasdüse angeordnet ist. Das Gaspolster weist durch die Querwölbung der Austrittsöffnung eine entsprechende Querwölbung auf, die zur Ausbildung der Querwölbung des Metallbands dient. Vorzugsweise tritt das Gas über die Länge der, beispielsweise schlitzförmig ausgebildeten, Austrittsöffnung aus, um ein gleichmäßiges Luftpolster zu erzeugen. Nach einer weiteren vorteilhaften Ausgestaltung ist eine quer zu der Bandlaufrichtung des Metallbands gegebene Breite der Stützdüsenanordnung variierbar. Hierdurch kann die Breite der Stützdüsenanordnung bzw. der Gasdüse zur Anpassung an die jeweilige Breite des Metallbands variiert werden. Die Variation der Breite der Stützdüsenanordnung bzw. der Gasdüse kann automatisiert mittels eines ansteuerbaren Stellglieds oder manuell erfolgen. In erstem Fall kann die Vorrichtung eine signaltechnisch mit dem Stellglied Advantageously, the gas nozzle comprises at least one outlet opening with a continuous or graduated transverse curvature corresponding to the transverse curvature to be formed on the metal strip. The outlet opening preferably extends substantially over the entire width of the metal strip. The transverse curvature of the outlet opening can be achieved in that the center of the gas nozzle is arranged higher than the sides of the gas nozzle. The gas cushion has by the transverse curvature of the outlet opening a corresponding transverse curvature, which serves to form the transverse curvature of the metal strip. Preferably, the gas exits the length of the, for example, slot-shaped, outlet opening to produce a uniform air cushion. According to a further advantageous embodiment, a width of the support nozzle arrangement which is transverse to the strip running direction of the metal strip can be varied. As a result, the width of the support nozzle arrangement or the gas nozzle can be varied to adapt to the respective width of the metal strip. The variation of the width of the support nozzle arrangement or the gas nozzle can be automated by means of a controllable actuator or manually. In the first case, the device can be a signal with the actuator
Seite 5 verbundene Steuer- und/oder Regelelektronik aufweisen, der Daten zu der jeweiligen Breite des Metallbands zugeführt und mit der diese Daten zur Erzeugung von Stellsignalen für das Stellglied verarbeitet werden. Eine weitere vorteilhafte Ausgestaltung sieht vor, dass die Stützdüsenanordnung höhenverstellbar angeordnet ist. Hierdurch kann die Positionierung der Stützdüsenanordnung bzw. der Gasdüse an den jeweiligen Bandlauf des Metallbands angepasst werden. Zudem kann hierdurch die Beaufschlagung des Metallbands mit dem Gaspolster bzw. die Stützwirkung des Gaspolsters an das jeweilige Gewicht des Metallbands angepasst werden. Beispielsweise kann die Stützdüsenanordnung bzw. die Gasdüse bei einem leichtgewichtigeren Metallband tiefer, d.h. in einem größeren Abstand zu dem Metallband, und bei einem schwergewichtigeren Metallband höher, d.h. in einem kleineren Abstand zu dem Metallband, angeordnet werden. Die Höhenverstellung der Stützdüsenanordnung bzw. der Gasdüse kann automatisiert mittels eines ansteuerbaren Stellglieds oder manuell erfolgen. In erstem Fall kann die Vorrichtung eine signaltechnisch mit dem Stellglied verbundene Steuer- und/oder Regelelektronik aufweisen, der Daten zu dem jeweiligen Gewicht, der Materialstärke und/oder Breite des Metallbands zugeführt und mit der diese Daten zur Erzeugung von Stellsignalen für das Stellglied verarbeitet werden. page 5 connected control and / or regulating electronics, the data supplied to the respective width of the metal strip and with which these data are processed to generate actuating signals for the actuator. A further advantageous embodiment provides that the support nozzle arrangement is arranged vertically adjustable. As a result, the positioning of the support nozzle arrangement or the gas nozzle can be adapted to the respective strip run of the metal strip. In addition, this can be adapted to the respective weight of the metal strip, the admission of the metal strip with the gas cushion or the supporting effect of the gas cushion. For example, the support nozzle assembly or the gas nozzle in a lighter weight metal band deeper, ie at a greater distance to the metal strip, and higher weight metal band, that are arranged at a smaller distance to the metal strip. The height adjustment of the support nozzle arrangement or the gas nozzle can be automated by means of a controllable actuator or manually. In the first case, the device may have a signaling technology connected to the actuator control and / or control electronics, the data supplied to the respective weight, the material thickness and / or width of the metal strip and with which these data are processed to generate actuating signals for the actuator ,
Gemäß einer weiteren vorteilhaften Ausgestaltung ist eine Stärke eines aus der Stützdüsenanordnung austretenden Gasmassenstroms variierbar. Hierdurch kann die Stützwirkung des Gaspolsters variiert werden. Dadurch kann die Beaufschlagung des Metallbands mit dem Gaspolster bzw. die Stützwirkung des Gaspolsters an das jeweilige Gewicht des Metallbands angepasst werden. Beispielsweise kann bei einem leichtgewichtigeren Metallband die Stärke des Gasmassenstroms niedriger sein als bei einem schwergewichtigeren Metallband. Die Variation der Stärke des Gasmassenstroms kann automatisiert oder manuell erfolgen. In erstem Fall kann die Vorrichtung eine signaltechnisch mit einem Gebläse der Vorrichtung verbundene Steuer- und/oder Regelelektronik aufweisen, According to a further advantageous embodiment, a strength of a gas mass flow emerging from the support nozzle arrangement can be varied. As a result, the supporting effect of the gas cushion can be varied. As a result, the loading of the metal strip with the gas cushion or the supporting effect of the gas cushion can be adapted to the respective weight of the metal strip. For example, the weight of the gas mass flow may be lower for a lighter weight metal band than for a heavier weight metal band. The variation of the strength of the gas mass flow can be automated or manual. In the first case, the device may have a signaling and control electronics connected to a blower of the device,
Seite 6 der Daten zu dem jeweiligen Gewicht, der Materialstärke und/oder Breite des Metallbands zugeführt und mit der diese Daten zur Erzeugung von Steuersignalen für das Gebläse verarbeitet werden. Es ist des Weiteren von Vorteil, wenn eine Temperatur des aus der Stützdüsenanordnung austretenden Gases variierbar ist. Die Temperatur des Gases kann beispielsweise derart gewählt werden, dass das Metallband über das Gaspolster warmgehalten oder abgekühlt wird. Die Temperatur des Gases kann beispielsweise in Abhängigkeit einer Temperatur des aus dem Glühofen austretenden Metallbands ausgewählt werden. Die Vorrichtung kann wenigstens eine Heizeinrichtung zum Aufheizen des Gases vor seinem Austritt aus der Stützdüsenanordnung aufweisen. Die Variation der Temperatur des Gases kann automatisiert oder manuell erfolgen. In erstem Fall kann die Vorrichtung eine signaltechnisch mit einer Heizeinrichtung verbundene Steuer- und/oder Regelelektronik aufweisen, der Daten zu der jeweiligen Temperatur des Metallbands zugeführt und mit der diese Daten zur Erzeugung von Steuersignalen für die Heizeinrichtung verarbeitet werden. page 6 the data is supplied to the respective weight, the material thickness and / or width of the metal strip and with which these data are processed to generate control signals for the fan. It is furthermore advantageous if a temperature of the gas emerging from the support nozzle arrangement can be varied. The temperature of the gas can be selected, for example, such that the metal strip is kept warm or cooled via the gas cushion. The temperature of the gas can be selected, for example, as a function of a temperature of the metal strip emerging from the annealing furnace. The apparatus may include at least one heater for heating the gas prior to exiting the support nozzle assembly. The variation of the temperature of the gas can be automated or manual. In the first case, the device may have a signaling and control electronics connected to a heater, the data supplied to the respective temperature of the metal strip and with which these data are processed to generate control signals for the heater.
Nach einem erfindungsgemäßen Verfahren zum Ausbilden einer Querwölbung an einem aus einem Glühofen austretenden Metallband wird die Querwölbung berührungslos an dem Metallband ausgebildet. According to a method according to the invention for forming a transverse curvature on a metal strip emerging from an annealing furnace, the transverse curvature is formed without contact on the metal strip.
Mit dem Verfahren sind die oben mit Bezug auf die Vorrichtung genannten Vorteile entsprechend verbunden. Die obige Vorrichtung kann zur Durchführung des Verfahrens verwendet werden. Mit dem erfindungsgemäßen Verfahren lässt sich die Querwölbung an dem Metallband ausbilden, ohne die Oberflächenbeschaffenheit des Metallbands zu beeinträchtigen. With the method, the advantages mentioned above with respect to the device are connected accordingly. The above apparatus can be used for carrying out the method. With the method according to the invention, the transverse curvature can be formed on the metal strip without impairing the surface quality of the metal strip.
Gemäß einer vorteilhaften Ausgestaltung wird ein das Metallband von unten stützendes Gaspolster derart erzeugt, dass durch das Gaspolster an dem Metallband die Querwölbung ausgebildet wird. Hierzu kann die obige Vorrichtung According to an advantageous embodiment, a gas cushion supporting the metal band from below is produced in such a way that the transverse curvature is formed by the gas cushion on the metal band. For this purpose, the above device
Seite 7 nach einer der genannten Ausgestaltungen oder einer beliebigen Kombination von wenigstens zwei der Ausgestaltungen eingesetzt werden. Folglich sind mit dieser Ausgestaltung die oben mit Bezug auf die Vorrichtung genannten Vorteile entsprechend verbunden. Page 7 be used according to one of said embodiments or any combination of at least two of the embodiments. Consequently, with this embodiment, the advantages mentioned above with respect to the device are connected accordingly.
Nach einer weiteren vorteilhaften Ausgestaltung wird eine quer zu einer Bandlaufrichtung des Metallbands gegebene Breite des Gaspolsters variiert. Mit dieser Ausgestaltung sind die oben mit Bezug auf die entsprechende Ausgestaltung der Vorrichtung genannten Vorteile entsprechend verbunden. Die zu dieser Ausgestaltung der Vorrichtung genannten Ausgestaltungsvarianten können zur Realisierung dieser Ausgestaltung des Verfahrens verwendet werden. Insbesondere kann die Breite der Stützdüsenanordnung bzw. Gasdüse entsprechend variiert werden, um die Breite des Gaspolsters zu variieren. Eine weitere vorteilhafte Ausgestaltung sieht vor, dass eine Stärke eines aus der Stützdüsenanordnung austretenden Gasmassenstroms variiert wird. Mit dieser Ausgestaltung sind die oben mit Bezug auf die entsprechende Ausgestaltung der Vorrichtung genannten Vorteile entsprechend verbunden. Die zu dieser Ausgestaltung der Vorrichtung genannten Ausgestaltungsvarianten können zur Realisierung dieser Ausgestaltung des Verfahrens verwendet werden. According to a further advantageous embodiment, a transverse to a strip running direction of the metal strip width of the gas cushion is varied. With this embodiment, the advantages mentioned above with respect to the corresponding embodiment of the device are connected accordingly. The design variants mentioned for this embodiment of the device can be used to implement this embodiment of the method. In particular, the width of the support nozzle assembly or gas nozzle can be varied accordingly to vary the width of the gas cushion. A further advantageous embodiment provides that a thickness of a gas mass flow emerging from the support nozzle arrangement is varied. With this embodiment, the advantages mentioned above with respect to the corresponding embodiment of the device are connected accordingly. The design variants mentioned for this embodiment of the device can be used to implement this embodiment of the method.
Es ist des Weiteren von Vorteil, wenn eine Temperatur des aus der Stützdüsenanordnung austretenden Gases variiert wird. Mit dieser Ausgestaltung sind die oben mit Bezug auf die entsprechende Ausgestaltung der Vorrichtung genannten Vorteile entsprechend verbunden. Die zu dieser Ausgestaltung der Vorrichtung genannten Ausgestaltungsvarianten können zur Realisierung dieser Ausgestaltung des Verfahrens verwendet werden. It is furthermore advantageous if a temperature of the gas emerging from the support nozzle arrangement is varied. With this embodiment, the advantages mentioned above with respect to the corresponding embodiment of the device are connected accordingly. The design variants mentioned for this embodiment of the device can be used to implement this embodiment of the method.
Im Folgenden wird die Erfindung unter Bezugnahme auf die anliegenden Figuren anhand bevorzugter Ausführungsformen beispielhaft erläutert, wobei die nachfolgend erläuterten Merkmale sowohl jeweils für sich genommen als auch in In the following, the invention will be explained by way of example with reference to the attached figures with reference to preferred embodiments, the features explained below being taken both individually and in each case
Seite 8 unterschiedlicher Kombination miteinander einen Aspekt der Erfindung darstellen können. Es zeigen: page 8 different combination with each other can represent an aspect of the invention. Show it:
Figur 1 : eine schematische Darstellung eines Ausführungsbeispiels für eine erfindungsgemäße Vorrichtung; und Figure 1: a schematic representation of an embodiment of an inventive device; and
Figur 2: eine schematische Darstellung einer Stützdüsenanordnung eines weiteren Ausführungsbeispiels für eine erfindungsgemäße Vorrichtung. Figure 2 is a schematic representation of a support nozzle assembly of another embodiment of an inventive device.
In den Figuren sind gleiche bzw. funktionsgleiche Bauteile mit denselben Bezugszeichen versehen. In the figures, identical or functionally identical components are provided with the same reference numerals.
Figur 1 zeigt eine schematische Darstellung eines Ausführungsbeispiels für eine erfindungsgemäße Vorrichtung 1 zum Ausbilden einer Querwölbung an einem aus einem Glühofen 2 austretenden, plan ausgebildeten Metallband 3. In Bandlaufrichtung 4 schließt sich an die Vorrichtung 1 eine Kühlstraße 5 an. Sowohl in dem Glühofen 2 als auch in der Kühlstraße 5 (Wasserkühler) wird das Metallband 3 berührungslos mittels nicht gezeigter Schwebedüsen geführt. Figure 1 shows a schematic representation of an embodiment of an inventive device 1 for forming a transverse curvature on a emerging from an annealing furnace 2, flat formed metal strip 3. In the tape running direction 4 is followed by the device 1, a cooling line 5 at. Both in the annealing furnace 2 and in the cooling line 5 (water cooler), the metal strip 3 is guided without contact by means of floating nozzles, not shown.
Die Vorrichtung 1 umfasst eine unterhalb eines Bandlaufs des Metallbands 3 angeordnete Stützdüsenanordnung 6, die eingerichtet ist, ein das Metallband 3 von unten stützendes Gaspolster 7 zwischen dem Metallband 3 und der Stützdüsenanordnung 6 derart zu erzeugen, dass durch das Gaspolster 7 an dem Metallband 3 die Querwölbung berührungslos ausbildbar ist. The device 1 comprises a arranged below a strip of the metal strip 3 support nozzle assembly 6, which is adapted to produce a metal band 3 from below supporting gas cushion 7 between the metal strip 3 and the support nozzle assembly 6 such that through the gas cushion 7 on the metal strip 3 the Transverse curvature can be formed without contact.
Die Stützdüsenanordnung 6 umfasst quer zu der Bandlaufrichtung 4 des Metallbands 3 eine sich im Wesentlichen über die gesamte Breite des Metallbands 3 erstreckende Gasdüse 8. Die Gasdüse 8 umfasst eine Austrittsöffnung 9 mit einer kontinuierlich oder abgestuft ausgebildeten Querwölbung entsprechend der an dem Metallband 3 auszubildenden Querwölbung, wie beispielsweise aus Figur The nozzle assembly 6 comprises transversely to the strip running direction 4 of the metal strip 3 a substantially over the entire width of the metal strip 3 extending gas nozzle 8. The gas nozzle 8 comprises an outlet opening 9 with a continuously or stepped formed transverse curvature corresponding to the trachea to be formed on the metal strip 3 transverse curvature, as for example from FIG
Seite 9 2 ersichtlich. Eine quer zu der Bandlaufrichtung 4 des Metallbands 3 gegebene Breite der Stützdüsenanordnung 6 bzw. der Gasdüse 8 kann variierbar sein. Die Stützdüsenanordnung 6 bzw. die Gasdüse 8 kann entsprechend dem Doppelpfeil 10 höhenverstellbar angeordnet sein. Page 9 2 can be seen. A width of the support nozzle arrangement 6 or of the gas nozzle 8 given transversely to the strip running direction 4 of the metal strip 3 can be variable. The support nozzle arrangement 6 or the gas nozzle 8 can be arranged to be height-adjustable according to the double arrow 10.
Eine Stärke eines aus der Stützdüsenanordnung 6 bzw. der Gasdüse 8 austretenden Gasmassenstroms kann variierbar sein. Hierzu kann die Vorrichtung 1 ein Gebläse 1 1 und eine signaltechnisch mit dem Gebläse 1 1 verbundene Steuer- und/oder Regelelektronik 12 zum Steuern des Gebläses 1 1 aufweisen. Der Steuer- und/oder Regelelektronik 12 können Daten zugeführt werden, die von der Steuer- und/oder Regelelektronik 12 zur Ansteuerung des Gebläses 1 1 bzw. die Variation der Stärke des Gasmassenstroms verarbeitet werden. A thickness of a gas mass flow emerging from the support nozzle arrangement 6 or the gas nozzle 8 can be variable. For this purpose, the device 1, a fan 1 1 and a signal technically connected to the fan 1 1 control and / or control electronics 12 for controlling the blower 1 1 have. The control and / or regulating electronics 12 can be supplied with data which are processed by the control and / or regulating electronics 12 for controlling the blower 1 1 or the variation of the intensity of the gas mass flow.
Eine Temperatur des aus der Stützdüsenanordnung 6 bzw. der Gasdüse 8 austretenden Gases kann variierbar sein. Hierzu kann die Vorrichtung 1 eine dem Gebläse 1 1 nachgeschaltete Heizeinrichtung 13 aufweisen, die signaltechnisch mit der Steuer- und/oder Regelelektronik 12 verbunden und mit dieser steuerbar ist. Der Steuer- und/oder Regelelektronik 12 können Daten zugeführt werden, die von der Steuer- und/oder Regelelektronik 12 zur Ansteuerung der Heizeinrichtung 13 bzw. die Variation der Temperatur des Gases verarbeitet werden. A temperature of the gas leaving the support nozzle arrangement 6 or the gas nozzle 8 can be variable. For this purpose, the device 1 may have a blower 1 1 connected downstream heater 13, which is technically connected to the control and / or control electronics 12 and controllable with this. The control and / or regulating electronics 12 can be supplied with data which are processed by the control and / or regulating electronics 12 for controlling the heating device 13 or the variation of the temperature of the gas.
Figur 2 zeigt eine schematische Darstellung einer Stützdüsenanordnung 6 eines weiteren Ausführungsbeispiels für eine erfindungsgemäße Vorrichtung 1 zum Ausbilden einer Querwölbung an einem aus einem nicht gezeigten Glühofen austretenden, plan ausgebildeten Metallband 3. In Figur 2 ist die positive bzw. konkave Querwölbung des Metallbands 3 gezeigt. FIG. 2 shows a schematic representation of a support nozzle arrangement 6 of a further exemplary embodiment of a device 1 according to the invention for forming a transverse curvature on a planely formed metal strip 3 emerging from an annealing furnace, not shown. FIG. 2 shows the positive or concave transverse curvature of the metal strip 3.
Die Stützdüsenanordnung 6 ist unterhalb eines Bandlaufs des Metallbands 3 angeordnet und ist eingerichtet, ein das Metallband 3 von unten stützendes Gaspolster 7 zwischen dem Metallband 3 und der Stützdüsenanordnung 6 derart The support nozzle arrangement 6 is arranged below a strip run of the metal strip 3 and is set up, a gas cushion 7 supporting the metal strip 3 from below, between the metal strip 3 and the support nozzle arrangement 6
Seite 10 zu erzeugen, dass durch das Gaspolster 7 an dem Metallband 3 die Querwölbung ausbildbar ist. Page 10 to produce that by the gas cushion 7 on the metal strip 3, the transverse curvature can be formed.
Die Stützdüsenanordnung 6 umfasst quer zu einer Bandlaufrichtung 4 des Metallbands 3 eine sich im Wesentlichen über die gesamte Breite des Metallbands 3 erstreckende Gasdüse 8. Die Gasdüse 8 umfasst eine Austrittsöffnung 9 mit einer kontinuierlich ausgebildeten Querwölbung entsprechend der an dem Metallband 3 auszubildenden Querwölbung. Eine quer zu der Bandlaufrichtung 4 des Metallbands 3 gegebene Breite der Stützdüsenanordnung 6 bzw. der Gasdüse 8 kann variierbar sein. Die Stützdüsenanordnung 6 bzw. die Gasdüse 8 kann entsprechend dem Doppelpfeil 10 höhenverstellbar angeordnet sein. The nozzle assembly 6 comprises transversely to a strip running direction 4 of the metal strip 3 a substantially over the entire width of the metal strip 3 extending gas nozzle 8. The gas nozzle 8 comprises an outlet opening 9 with a continuously formed transverse curvature corresponding to the trachea to be formed on the metal strip 3 transverse curvature. A width of the support nozzle arrangement 6 or of the gas nozzle 8 given transversely to the strip running direction 4 of the metal strip 3 can be variable. The support nozzle arrangement 6 or the gas nozzle 8 can be arranged to be height-adjustable according to the double arrow 10.
Eine Stärke eines aus der Stützdüsenanordnung 6 bzw. der Gasdüse 8 austretenden Gasmassenstroms kann variierbar sein. Hierzu kann die Vorrichtung 1 ein Gebläse 1 1 und eine signaltechnisch mit dem Gebläse 1 1 verbundene Steuer- und/oder Regelelektronik 12 zum Steuern des Gebläses 1 1 aufweisen. Der Steuer- und/oder Regelelektronik 12 können Daten zugeführt werden, die von der Steuer- und/oder Regelelektronik 12 zur Ansteuerung des Gebläses 1 1 bzw. die Variation der Stärke des Gasmassenstroms verarbeitet werden. A thickness of a gas mass flow emerging from the support nozzle arrangement 6 or the gas nozzle 8 can be variable. For this purpose, the device 1, a fan 1 1 and a signal technically connected to the fan 1 1 control and / or control electronics 12 for controlling the blower 1 1 have. The control and / or regulating electronics 12 can be supplied with data which are processed by the control and / or regulating electronics 12 for controlling the blower 1 1 or the variation of the intensity of the gas mass flow.
Eine Temperatur des aus der Stützdüsenanordnung 6 bzw. der Gasdüse 8 austretenden Gases kann variierbar sein. Hierzu kann die Vorrichtung 1 eine dem Gebläse 1 1 nachgeschaltete Heizeinrichtung 13 aufweisen, die signaltechnisch mit der Steuer- und/oder Regelelektronik 12 verbunden und mit dieser steuerbar ist. Der Steuer- und/oder Regelelektronik 12 können Daten zugeführt werden, die von der Steuer- und/oder Regelelektronik 12 zur Ansteuerung der Heizeinrichtung 13 bzw. die Variation der Temperatur des Gases verarbeitet werden. A temperature of the gas leaving the support nozzle arrangement 6 or the gas nozzle 8 can be variable. For this purpose, the device 1 may have a blower 1 1 connected downstream heater 13, which is technically connected to the control and / or control electronics 12 and controllable with this. The control and / or regulating electronics 12 can be supplied with data which are processed by the control and / or regulating electronics 12 for controlling the heating device 13 or the variation of the temperature of the gas.
Seite 1 1 Bezugszeichenliste Page 1 1 LIST OF REFERENCE NUMBERS
1 Vorrichtung 1 device
2 Glühofen  2 annealing furnace
3 Metallband  3 metal band
4 Bandlaufrichtung  4 tape direction
5 Kühlstraße (Wasserkühler)  5 cooling line (water cooler)
6 Stützdüsenanordnung  6 support nozzle arrangement
7 Gaspolster  7 gas cushions
8 Gasdüse  8 gas nozzle
9 Austrittsöffnung  9 outlet opening
10 Doppelpfeil (Höhenverstellbarkeit von 6, 8) 10 double arrows (height adjustment of 6, 8)
1 1 Gebläse 1 1 blower
12 Steuer- und/oder Regelelektronik  12 control and / or control electronics
13 Heizeinrichtung  13 heating device
Seite 12 page 12

Claims

Patentansprüche: claims:
1 . Vorrichtung (1 ) zum Ausbilden einer Querwölbung an einem aus einem Glühofen (2) austretenden Metallband (3), gekennzeichnet durch wenigstens eine unterhalb eines Bandlaufs des Metallbands (3) angeordnete Stützdüsenanordnung (6), die eingerichtet ist, ein das Metallband (3) von unten stützendes Gaspolster (7) zwischen dem Metallband (3) und der Stützdüsenanordnung (6) derart zu erzeugen, dass durch das Gaspolster (7) an dem Metallband (3) die Querwölbung berührungslos ausbildbar ist. 1 . Device (1) for forming a transverse curvature on a metal strip (3) emerging from an annealing furnace (2), characterized by at least one support nozzle arrangement (6) arranged below a strip run of the metal strip (3), which is arranged to hold the metal strip (3). from below supporting gas cushion (7) between the metal strip (3) and the support nozzle assembly (6) to produce such that by the gas cushion (7) on the metal strip (3) the transverse curvature can be formed without contact.
2. Vorrichtung (1 ) nach Anspruch 1 , dadurch gekennzeichnet, dass die Stützdüsenanordnung (6) quer zu einer Bandlaufrichtung (4) des Metallbands (3) wenigstens eine sich im Wesentlichen über die Breite des Metallbands (3) erstreckende Gasdüse (8) aufweist. 2. Device (1) according to claim 1, characterized in that the support nozzle arrangement (6) transversely to a strip running direction (4) of the metal strip (3) at least one substantially over the width of the metal strip (3) extending gas nozzle (8) ,
3. Vorrichtung (1 ) nach Anspruch 2, dadurch gekennzeichnet, dass die Gasdüse (8) wenigstens eine Austrittsöffnung (9) mit einer kontinuierlich oder abgestuft ausgebildeten Querwölbung entsprechend der an dem Metallband (3) auszubildenden Querwölbung aufweist. 3. Device (1) according to claim 2, characterized in that the gas nozzle (8) has at least one outlet opening (9) with a continuously or stepped formed transverse curvature according to the on the metal strip (3) trainees transverse curvature.
4. Vorrichtung (1 ) nach einem der Ansprüche 1 bis 3, dadurch gekennzeichnet, dass eine quer zu der Bandlaufrichtung (4) des Metallbands (3) gegebene Breite der Stützdüsenanordnung (6) variierbar ist. 4. Device (1) according to one of claims 1 to 3, characterized in that a transverse to the strip running direction (4) of the metal strip (3) given width of the support nozzle assembly (6) is variable.
5. Vorrichtung (1 ) nach einem der Ansprüche 1 bis 4, dadurch gekennzeichnet, dass die Stützdüsenanordnung (6) höhenverstellbar angeordnet ist. 5. Device (1) according to one of claims 1 to 4, characterized in that the support nozzle arrangement (6) is arranged vertically adjustable.
Seite 13 Page 13
6. Vorrichtung (1 ) nach einem der Ansprüche 1 bis 5, dadurch gekennzeichnet, dass eine Stärke eines aus der Stützdüsenanordnung (6) austretenden Gasmassenstroms variierbar ist. 6. Device (1) according to one of claims 1 to 5, characterized in that a strength of a gas jet flow exiting the support nozzle arrangement (6) can be varied.
7. Vorrichtung (1 ) nach einem der Ansprüche 1 bis 6, dadurch gekennzeichnet, dass eine Temperatur des aus der Stützdüsenanordnung (6) austretenden Gases variierbar ist. 7. Device (1) according to one of claims 1 to 6, characterized in that a temperature of the out of the support nozzle assembly (6) exiting gas is variable.
8. Verfahren zum Ausbilden einer Querwölbung an einem aus einem Glühofen (2) austretenden Metallband (3), dadurch gekennzeichnet, dass die Querwölbung berührungslos an dem Metallband (3) ausgebildet wird. 8. A method for forming a transverse curvature at one of an annealing furnace (2) emerging metal strip (3), characterized in that the transverse curvature is formed without contact on the metal strip (3).
9. Verfahren nach Anspruch 8, dadurch gekennzeichnet, dass ein das Metallband (3) von unten stützendes Gaspolster (7) derart erzeugt wird, dass durch das Gaspolster (7) an dem Metallband (3) die Querwölbung ausgebildet wird. 9. The method according to claim 8, characterized in that the metal strip (3) from below supporting gas cushion (7) is generated such that by the gas cushion (7) on the metal strip (3), the transverse curvature is formed.
10. Verfahren nach Anspruch 8 oder 9, dadurch gekennzeichnet, dass eine quer zu einer Bandlaufrichtung (4) des Metallbands (3) gegebene Breite des Gaspolsters (7) variiert wird. 10. The method according to claim 8 or 9, characterized in that a transversely to a strip running direction (4) of the metal strip (3) given width of the gas cushion (7) is varied.
1 1 . Verfahren nach einem der Ansprüche 8 bis 10, dadurch gekennzeichnet, dass eine Stärke eines aus der Stützdüsenanordnung (6) austretenden Gasmassenstroms variiert wird. 1 1. Method according to one of claims 8 to 10, characterized in that a thickness of a gas mass flow emerging from the support nozzle arrangement (6) is varied.
12. Verfahren nach einem der Ansprüche 8 bis 1 1 , dadurch gekennzeichnet, dass eine Temperatur des aus der Stützdüsenanordnung (6) austretenden Gases variiert wird. 12. The method according to any one of claims 8 to 1 1, characterized in that a temperature of the out of the support nozzle assembly (6) exiting gas is varied.
Seite 14 Page 14
EP17748422.7A 2016-07-29 2017-07-19 Method for forming a transverse curvature on a metal strip leaving an annealing furnace and use of an apparatus for forming a transverse curvature on a metal strip leaving an annealing furnace Active EP3491156B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102016214075.2A DE102016214075A1 (en) 2016-07-29 2016-07-29 Device and method for forming a transverse curvature on a metal strip emerging from an annealing furnace
PCT/EP2017/068175 WO2018019670A1 (en) 2016-07-29 2017-07-19 Device and method for forming a transverse curvature on a metal strip leaving an annealing furnace

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EP3491156A1 true EP3491156A1 (en) 2019-06-05
EP3491156B1 EP3491156B1 (en) 2020-01-22

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EP (1) EP3491156B1 (en)
CN (1) CN109689902A (en)
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US3281957A (en) * 1963-04-22 1966-11-01 Production Machinery Corp Apparatus for processing strip material
JPS583931A (en) * 1981-06-29 1983-01-10 Chugai Ro Kogyo Kaisha Ltd Floating device for strip-like material and floating type heat treatment furnace
EP0181830B1 (en) * 1984-11-08 1991-06-12 Mitsubishi Jukogyo Kabushiki Kaisha Method and apparatus for heating a strip of metallic material in a continuous annealing furnace
AT409301B (en) * 2000-05-05 2002-07-25 Ebner Peter Dipl Ing DEVICE FOR GUIDING A METAL STRIP ON A GAS PILLOW
DE10046273C2 (en) 2000-09-19 2003-01-30 Carl Kramer Method and device for heat treating a metal strip
CN201065425Y (en) * 2007-07-19 2008-05-28 鞍钢股份有限公司 Device for making steel belt of continuous annealing furnace suspending
CN201647712U (en) * 2010-03-12 2010-11-24 宝山钢铁股份有限公司 Non-contact type steel strip conveying device
CN101993993A (en) * 2010-11-29 2011-03-30 苏州中门子科技有限公司 Air cushion box on belt material heat treatment equipment
CN102517436B (en) * 2011-12-16 2013-08-28 中冶南方(武汉)威仕工业炉有限公司 Method for heating and supporting aluminum band
CN203360520U (en) * 2013-06-26 2013-12-25 中冶南方(武汉)威仕工业炉有限公司 Air cushion type cooling nozzle device
CN203498431U (en) * 2013-08-23 2014-03-26 南京苏星冶金科技有限公司 Nozzle of air cushion furnace

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CN109689902A (en) 2019-04-26
DE102016214075A1 (en) 2018-02-01
WO2018019670A1 (en) 2018-02-01
EP3491156B1 (en) 2020-01-22

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