EP1466674A2 - Method and device for the manufacturing of a tube from a metallic material - Google Patents

Method and device for the manufacturing of a tube from a metallic material Download PDF

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Publication number
EP1466674A2
EP1466674A2 EP04001525A EP04001525A EP1466674A2 EP 1466674 A2 EP1466674 A2 EP 1466674A2 EP 04001525 A EP04001525 A EP 04001525A EP 04001525 A EP04001525 A EP 04001525A EP 1466674 A2 EP1466674 A2 EP 1466674A2
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EP
European Patent Office
Prior art keywords
tube
tube blank
rollers
inner tool
rolling mill
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
EP04001525A
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German (de)
French (fr)
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EP1466674B1 (en
EP1466674A3 (en
Inventor
Hermann-Josef Klingen
Thomas Winterfeldt
Norbert Zillekens
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SMS Group GmbH
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SMS Meer GmbH
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Publication date
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Publication of EP1466674A2 publication Critical patent/EP1466674A2/en
Publication of EP1466674A3 publication Critical patent/EP1466674A3/en
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Publication of EP1466674B1 publication Critical patent/EP1466674B1/en
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Classifications

    • BPERFORMING OPERATIONS; TRANSPORTING
    • B21MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21BROLLING OF METAL
    • B21B19/00Tube-rolling by rollers arranged outside the work and having their axes not perpendicular to the axis of the work
    • B21B19/02Tube-rolling by rollers arranged outside the work and having their axes not perpendicular to the axis of the work the axes of the rollers being arranged essentially diagonally to the axis of the work, e.g. "cross" tube-rolling ; Diescher mills, Stiefel disc piercers or Stiefel rotary piercers
    • B21B19/06Rolling hollow basic material, e.g. Assel mills
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B21MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21BROLLING OF METAL
    • B21B37/00Control devices or methods specially adapted for metal-rolling mills or the work produced thereby
    • B21B37/78Control of tube rolling
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B21MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21BROLLING OF METAL
    • B21B45/00Devices for surface or other treatment of work, specially combined with or arranged in, or specially adapted for use in connection with, metal-rolling mills
    • B21B45/02Devices for surface or other treatment of work, specially combined with or arranged in, or specially adapted for use in connection with, metal-rolling mills for lubricating, cooling, or cleaning
    • B21B45/0203Cooling
    • B21B45/0209Cooling devices, e.g. using gaseous coolants
    • B21B45/0215Cooling devices, e.g. using gaseous coolants using liquid coolants, e.g. for sections, for tubes
    • B21B2045/0227Cooling devices, e.g. using gaseous coolants using liquid coolants, e.g. for sections, for tubes for tubes
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B21MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21BROLLING OF METAL
    • B21B25/00Mandrels for metal tube rolling mills, e.g. mandrels of the types used in the methods covered by group B21B17/00; Accessories or auxiliary means therefor ; Construction of, or alloys for, mandrels or plugs
    • B21B25/02Guides, supports, or abutments for mandrels, e.g. carriages or steadiers; Adjusting devices for mandrels

Definitions

  • the invention relates to a method for producing pipes from metallic Material in a planetary cross-rolling mill, in which a tube blank is the planetary cross-rolling mill fed and between a number of rollers and one mandrel-shaped inner tool is rolled into the tube.
  • the invention further relates to a planetary cross roll mill for the production of pipes from metallic Material.
  • a planetary cross-rolling mill known. Such a method and a planetary cross roll mill is described for example in DE 101 07 567 A1.
  • the planetary cross-rolling mill fed a pipe blank, which rolled in a gap to the pipe that is between a number of planetary diagonal rollers and one forms thorn-shaped inner tool.
  • the invention is therefore based on the object of a method of the type mentioned Art as well as to create a planetary diagonal rolling mill that the above Overcomes disadvantages. This is intended to increase output rates as well the reliability of planetary diagonal rolling are guaranteed.
  • this object is achieved by the invention in that that the inner tool at the time the beginning of a Tube blank and / or the end of a tube blank in the area of the rollers occurs, against the conveying direction of the tube blank from its working position by one predetermined displacement is withdrawn and after the beginning the tube blank and / or the end of the tube blank passes the area of the rollers has been pushed back into his working position.
  • the beginning of the tube blank and / or the end of the tube blank is preferred with the inner tool withdrawn, rolled together in a liquid-tight manner by the rollers. It also increases the economics of the process if at least Two pipe blanks are fed to the planetary cross-rolling mill become. Furthermore, it can be provided that the planetary cross roll mill is continuously fed with pipe blanks.
  • Another training provides that by measuring the rotation of the rolled Pipe around its longitudinal axis and controlled or regulated activation of the Drive or drives the rollers a rotation of the tube around its Longitudinal axis is balanced. It can be controlled or regulated to the Main drive of the rollers can be influenced; alternatively or additively be provided that controlled or regulated on a superposition drive the rollers are acted on.
  • the tube blank and / or the Tube advantageously subjected to cooling with liquid cooling medium.
  • the planetary cross-rolling mill according to the invention for the production of pipes metallic material has a number of rollers and an internal tool, so that a pipe blank in the gap between the rollers and the inner tool for Pipe can be rolled.
  • the planetary cross roll mill is according to the invention characterized by means for timed or regulated withdrawal the inner tool from its working position by a predetermined displacement against the direction of conveyance of the tube blank as well as the time-controlled or controlled return of the inner tool to its working position.
  • the means as hydraulic or electrical Linear actuator are formed.
  • Fig. 1 is shown schematically, as in a planetary cross-rolling mill 2, the not shown in detail, but is constructed in a known manner, a pipe blank 3 is rolled into a tube 1.
  • the tube blank 3 enters in the conveying direction R in the planetary cross-rolling mill 2 and is rolled into tube 1.
  • a number of rollers 4 evenly distributed in the circumferential direction arranged around the tube 1, only one roller 4 being outlined in FIG. 1.
  • a mandrel-shaped inner tool 5 is positioned between the rollers 4, that there is a roll gap that the material of the tube blank 3 to Rolls tube 1 with the desired diameter.
  • means 10 are provided. These can be hydraulic or operated electrically.
  • Especially the planetary diagonal rolling mill 2 is preferably operated continuously with tube blanks 3 loaded.
  • the advantage of the method described is that even during the Rolling the slug joint 12 (see FIG. 2) continues to roll 4 with the required Rolling emulsion is applied and the emerging pipe 1 are cooled can, without rolling emulsion or cooling water into the interior of the tube 1 arrives. By protecting the inside of the pipe, it is easy to process further of the tube 1 allows. At the same time, the rollers 4 are well lubricated and cooled the outlet pipe 1. Thanks to constant cooling down to the end of the pipe does not find any oxidation due to excessive copper and copper alloys Rolled material temperature at the outlet from the planetary diagonal rolling mill 2 instead of what a reduced proportion of scrap results.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Metal Rolling (AREA)
  • Control Of Metal Rolling (AREA)
  • Metal Extraction Processes (AREA)

Abstract

Production of metallic pipes (1) comprises rolling the start (6) of the pipe loop (3) and/or the end (7) of the pipe loop together using an inner tool (5).

Description

Die Erfindung betrifft ein Verfahren zur Herstellung von Rohren aus metallischem Werkstoff in einem Planetenschrägwalzwerk, bei dem eine Rohrluppe dem Planetenschrägwalzwerk zugeführt und zwischen einer Anzahl Walzen und einem dornförmigen Innenwerkzeug zum Rohr gewalzt wird. Des weiteren betrifft die Erfindung ein Planetenschrägwalzwerk zur Herstellung von Rohren aus metallischem Werkstoff.The invention relates to a method for producing pipes from metallic Material in a planetary cross-rolling mill, in which a tube blank is the planetary cross-rolling mill fed and between a number of rollers and one mandrel-shaped inner tool is rolled into the tube. The invention further relates to a planetary cross roll mill for the production of pipes from metallic Material.

Zur Herstellung von nahtlosen Rohren ist deren Fertigung in einem Planetenschrägwalzwerk bekannt. Ein solches Verfahren und ein Planetenschrägwalzwerk ist beispielsweise in der DE 101 07 567 A1 beschrieben. Dabei wird dem Planetenschrägwalzwerk eine Rohrluppe zugeführt, die in einem Spalt zum Rohr gewalzt wird, der sich zwischen einer Anzahl Planetenschrägwalzen und einem dornförmigen Innenwerkzeug bildet.To produce seamless tubes, they are manufactured in a planetary cross-rolling mill known. Such a method and a planetary cross roll mill is described for example in DE 101 07 567 A1. The planetary cross-rolling mill fed a pipe blank, which rolled in a gap to the pipe that is between a number of planetary diagonal rollers and one forms thorn-shaped inner tool.

Durch die von den Walzen in das zu walzende Material eingebrachte Energie erwärmt sich die Rohrluppe bzw. das Rohr sehr stark, so dass es einer Kühlung unterzogen werden muss. Aus der DE 101 07 567 A1 ist es daher bekannt, die Rohrluppe zur Ausbildung einer Kühlzone in der einlaufenden Umformzone des Walzwerks durch allseitig konzentrisch gerichtetes Besprühen mit Kühlmedium zu beaufschlagen, wobei das Kühlmedium unter hohem Druck zugeführt wird. Dabei wird eine solche Wärmemenge abgeführt, dass ein Temperaturanstieg des gewalzten Rohres zumindest derart unterdrückt wird, dass es zu keiner unzulässig hohen Erwärmung kommt.Warmed up by the energy introduced into the material to be rolled by the rollers the pipe blank or the pipe very strong, so that it is cooling must be subjected. From DE 101 07 567 A1 it is therefore known that Tube blank to form a cooling zone in the incoming forming zone of the Rolling mill by concentrically spraying with cooling medium on all sides apply, the cooling medium being supplied under high pressure. there such an amount of heat is dissipated that a rise in temperature of the rolled Pipe is suppressed at least in such a way that it is inadmissible to none high warming comes.

Bei einer solchen Herstellungsweise entstehen dadurch Probleme, dass das zum Einsatz kommende Kühlmedium in die offenen Rohrenden eindringen kann, was die nachfolgende Weiterverarbeitung, z. B. durch Stopfenziehen, erschwert. Aus diesem Grunde ist es üblich, die offenen Rohrenden nicht mit Kühlmedium zu beaufschlagen, was allerdings in nachteiliger Weise zur Folge hat, dass die Ausbringung des Planetenschrägwalzwerks sinkt und der Schrottanteil ansteigt. Weiterhin ist es nachteilig, dass durch das Aussetzen der Kühlung im Endbereich des Rohrs bzw. der Rohrluppe das Rohr heiß aus dem Walzwerk läuft und deshalb leicht oxidiert. Die oxidierten Bereiche des Rohrs müssen in der Folge abgetrennt werden, um hinreichende Qualität des gefertigten Rohres zu garantieren.With such a production method, problems arise that the The cooling medium used can penetrate into the open pipe ends, which the subsequent processing, e.g. B. difficult by pulling the plug. Out for this reason it is common not to apply cooling medium to the open pipe ends, which, however, disadvantageously results in the application of the planetary diagonal rolling mill drops and the proportion of scrap increases. Farther it is disadvantageous that by suspending the cooling in the end area of the pipe the pipe runs hot from the rolling mill and therefore easily oxidized. The oxidized areas of the pipe must then be separated, to guarantee sufficient quality of the manufactured pipe.

Der Erfindung liegt daher die Aufgabe zugrunde, ein Verfahren der eingangs genannten Art sowie ein Planetenschrägwalzwerk zu schaffen, das die genannten Nachteile überwindet. Damit soll eine Steigerung der Ausbringungsleistung sowie der Zuverlässigkeit des Planetenschrägwalzens gewährleistet werden.The invention is therefore based on the object of a method of the type mentioned Art as well as to create a planetary diagonal rolling mill that the above Overcomes disadvantages. This is intended to increase output rates as well the reliability of planetary diagonal rolling are guaranteed.

Die Lösung dieser Aufgabe durch die Erfindung ist verfahrensgemäß dadurch gekennzeichnet, dass das Innenwerkzeug zu dem Zeitpunkt, zu dem der Anfang einer Rohrluppe und/oder das Ende einer Rohrluppe in den Bereich der Walzen eintritt, gegen die Förderrichtung der Rohrluppe aus seiner Arbeitsposition um einen vorbestimmten Verschiebeweg zurückgezogen wird und nachdem der Anfang der Rohrluppe und/oder das Ende der Rohrluppe den Bereich der Walzen passiert hat wieder in seine Arbeitsposition vorgeschoben wird.According to the method, this object is achieved by the invention in that that the inner tool at the time the beginning of a Tube blank and / or the end of a tube blank in the area of the rollers occurs, against the conveying direction of the tube blank from its working position by one predetermined displacement is withdrawn and after the beginning the tube blank and / or the end of the tube blank passes the area of the rollers has been pushed back into his working position.

Bevorzugt wird dabei der Anfang der Rohrluppe und/oder das Ende der Rohrluppe bei zurückgezogenem Innenwerkzeug flüssigkeitsdicht von den Walzen zusammengewalzt. Ferner erhöht es die Wirtschaftlichkeit des Verfahrens, wenn mindestens zwei Rohrluppen aneinanderstoßend dem Planetenschrägwalzwerk zugeführt werden. Weiterhin kann hierzu vorgesehen werden, dass das Planetenschrägwalzwerk kontinuierlich mit Rohrluppen beschickt wird.The beginning of the tube blank and / or the end of the tube blank is preferred with the inner tool withdrawn, rolled together in a liquid-tight manner by the rollers. It also increases the economics of the process if at least Two pipe blanks are fed to the planetary cross-rolling mill become. Furthermore, it can be provided that the planetary cross roll mill is continuously fed with pipe blanks.

Durch das Zurückziehen des Innenwerkzeugs wird es möglich, dass das Ende bzw. der Anfang des Rohres bzw. der Rohrluppe durch den Walzvorgang verschlossen wird, was zur Folge hat, dass kein Kühlmedium ins Innere des Rohres eintreten kann.By retracting the inner tool, it becomes possible that the end or the beginning of the tube or the tube blank closed by the rolling process becomes, which means that no cooling medium inside the tube can occur.

Eine weitere Fortbildung sieht vor, dass durch Messung der Drehung des gewalzten Rohres um seine Längsachse und gesteuerte oder geregelte Ansteuerung des Antriebs bzw. der Antriebe der Walzen eine Drehung des Rohres um seine Längsachse ausgeglichen wird. Dabei kann gesteuert oder geregelt auf den Hauptantrieb der Walzen Einfluss genommen werden; alternativ oder additiv kann vorgesehen werden, dass gesteuert oder geregelt auf einen Überlagerungsantrieb der Walzen eingewirkt wird.Another training provides that by measuring the rotation of the rolled Pipe around its longitudinal axis and controlled or regulated activation of the Drive or drives the rollers a rotation of the tube around its Longitudinal axis is balanced. It can be controlled or regulated to the Main drive of the rollers can be influenced; alternatively or additively be provided that controlled or regulated on a superposition drive the rollers are acted on.

Wie als solches im Stand der Technik bekannt, wird die Rohrluppe und/oder das Rohr mit Vorteil einer Kühlung mit flüssigem Kühlmedium unterzogen.As is known as such in the prior art, the tube blank and / or the Tube advantageously subjected to cooling with liquid cooling medium.

Das erfindungsgemäße Planetenschrägwalzwerk zur Herstellung von Rohren aus metallischem Werkstoff hat eine Anzahl von Walzen und ein Innenwerkzeug, so dass eine Rohrluppe im Spalt zwischen den Walzen und dem Innenwerkzeug zum Rohr gewalzt werden kann. Das Planetenschrägwalzwerk ist erfindungsgemäß gekennzeichnet durch Mittel zum zeitlich gesteuerten oder geregelten Zurückziehen des Innenwerkzeugs aus seiner Arbeitsposition um einen vorbestimmten Verschiebeweg entgegen der Förderrichtung der Rohrluppe sowie zum zeitlich gesteuerten oder geregelten Zurückbewegen des Innenwerkzeugs in seine Arbeitsposition. The planetary cross-rolling mill according to the invention for the production of pipes metallic material has a number of rollers and an internal tool, so that a pipe blank in the gap between the rollers and the inner tool for Pipe can be rolled. The planetary cross roll mill is according to the invention characterized by means for timed or regulated withdrawal the inner tool from its working position by a predetermined displacement against the direction of conveyance of the tube blank as well as the time-controlled or controlled return of the inner tool to its working position.

Dabei ist mit Vorteil vorgesehen, dass die Mittel als hydraulischer oder elektrischer Linearaktuator ausgebildet sind.It is advantageously provided that the means as hydraulic or electrical Linear actuator are formed.

In der Zeichnung ist ein Ausführungsbeispiel der Erfindung dargestellt. Es zeigen:

Fig. 1
schematisch den Schnitt durch ein Planetenschrägwalzwerk, wobei aus einer Rohrluppe das Rohr gewalzt wird, und
Fig. 2
dieselbe Darstellung wie in Fig. 1, wobei gerade die Anschlussstelle zweier Rohrluppen gewalzt wird.
In the drawing, an embodiment of the invention is shown. Show it:
Fig. 1
schematically the section through a planetary cross-rolling mill, the tube being rolled from a tube blank, and
Fig. 2
the same representation as in Fig. 1, the connection point of two tube blanks is being rolled.

In Fig. 1 ist schematisch gezeigt, wie in einem Planetenschrägwalzwerk 2, das nicht näher dargestellt, jedoch in bekannter Weise aufgebaut ist, eine Rohrluppe 3 zu einem Rohr 1 gewalzt wird. Die Rohrluppe 3 tritt dabei in Förderrichtung R in das Planetenschrägwalzwerk 2 ein und wird zum Rohr 1 gewalzt. Um dies zu bewerkstelligen, ist eine Anzahl Walzen 4 in Umfangsrichtung gleichmäßig verteilt um das Rohr 1 herum angeordnet, wobei in Fig. 1 nur eine Walze 4 skizziert ist. Weiterhin wird ein dornförmiges Innenwerkzeug 5 so zwischen den Walzen 4 positioniert, dass sich ein Walzspalt ergibt, der das Material der Rohrluppe 3 zum Rohr 1 mit gewünschtem Durchmesser walzt.In Fig. 1 is shown schematically, as in a planetary cross-rolling mill 2, the not shown in detail, but is constructed in a known manner, a pipe blank 3 is rolled into a tube 1. The tube blank 3 enters in the conveying direction R in the planetary cross-rolling mill 2 and is rolled into tube 1. To do this, is a number of rollers 4 evenly distributed in the circumferential direction arranged around the tube 1, only one roller 4 being outlined in FIG. 1. Furthermore, a mandrel-shaped inner tool 5 is positioned between the rollers 4, that there is a roll gap that the material of the tube blank 3 to Rolls tube 1 with the desired diameter.

Das insoweit vorbekannte Planetenschrägwalzverfahren wird gemäß der vorliegenden Erfindung wie folgt betrieben:The previously known planetary cross-rolling method is according to the present Invention operated as follows:

Im Planetenschrägwalzwerk 2 können zwei Rohrluppen 3 aneinanderstoßend zugeführt werden. In Fig. 2 ist zu erkennen, dass das Ende 7 der in Förderrichtung R vorderen (rechten) Rohrluppe 3 an den Anfang 6 der nachfolgenden (linken) Rohrluppe 3 anstößt. Der Luppenstoß, wobei die Rohrluppen 3 in diesem Bereich zugewalzt sind, ist durch den auf die durchgezogene Linie weisenden Pfeil 12 veranschaulicht. In the planetary cross-rolling mill 2, two tube blanks 3 can be fed against one another become. In Fig. 2 it can be seen that the end 7 of the in the conveying direction R front (right) tube blank 3 to the beginning 6 of the following (left) Tube blank 3 abuts. The slug joint, the tube blanks 3 in this area are rolled is illustrated by the arrow 12 pointing to the solid line.

Zu dem Zeitpunkt, zu dem der Anfang 6 der hinteren (linken) Rohrluppe 3 bzw. das Ende 7 der vorderen (rechten) Rohrluppe 3 in den Bereich der Walzen 4 eintritt, wird das Innenwerkzeug 5 gegen die Förderrichtung R der Rohrluppen 3 aus seiner in Fig. 1 dargestellten normalen Arbeitsposition 8 um einen vorbestimmten Verschiebeweg x in eine zurückgezogene Position 11 zurückgezogen. Dies ist in Fig. 1 dadurch verdeutlicht, dass hier mit ausgezogenen Linien die Arbeitsposition 8 des Innenwerkzeugs 5 und mit gestrichelten Linien die zurückgezogene Position 11 des Innenwerkzeugs 5 eingezeichnet ist.At the time when the beginning 6 of the rear (left) tube blank 3 or the end 7 of the front (right) tube blank 3 enters the area of the rollers 4, the inner tool 5 against the conveying direction R of the tube blank 3 its normal working position 8 shown in FIG. 1 by a predetermined one Displacement path x retracted into a retracted position 11. This is in Fig. 1 thereby illustrates that the working position here with solid lines 8 of the inner tool 5 and the retracted position with dashed lines 11 of the inner tool 5 is located.

Bei zurückgezogenem Innenwerkzeug 5 wird, wie es Fig. 2 zu entnehmen ist, das Ende 7 einer Rohrluppe 3 bzw. der Anfang 6 der nachfolgenden Rohrluppe 3 durch radiales Zustellen der Walzen 4 so zusammengewalzt, dass der Anfang 6 bzw. das Ende 7 der Rohrluppe 3 flüssigkeitsdicht verschlossen ist. Hierdurch kann kein Kühlmedium, das während des Walzprozesses auf die Rohrluppe 3 bzw. auf das Rohr 1 geleitet wird, in das Rohrinnere eindringen, womit die Weiterverarbeitung des Rohres 1, z. B. durch Stopfenziehen, nicht erschwert wird. Außerdem wird verhindert, dass das Rohr 1 beim Auslauf aus dem Planetenschrägwalzwerk 2 zu heiß wird und Oxidationen stattfinden. Diese sind vor allem im Falle von Kupfer bzw. Kupferlegierungen als Rohrmaterial problematisch.When the inner tool 5 is withdrawn, as can be seen in FIG. 2, the End 7 of a tube blank 3 or the beginning 6 of the following tube blank 3 by rolling the rollers 4 radially so that the beginning 6 or the end 7 of the tube blank 3 is closed liquid-tight. hereby no cooling medium can be applied to the tube blank 3 during the rolling process or is passed onto the pipe 1, penetrate into the pipe interior, with the further processing of the tube 1, e.g. B. by pulling the plugs, is not complicated. Moreover prevents the pipe 1 from leaving the planetary cross-rolling mill 2 becomes too hot and oxidation takes place. These are especially the case of copper or copper alloys as pipe material is problematic.

Hat der Anfang 6 der (linken) Rohrluppe 3 bzw. das Ende 7 der (rechten) Rohrluppe 3 den Bereich der Walzen 4 passiert, wird das Innenwerkzeug 5 wieder in die übliche Arbeitsposition 8 vorgeschoben. Damit erfolgt das übliche Walzen der Rohrluppe 3 zum Rohr 1 gemäß Fig. 1.Has the beginning 6 of the (left) tube blank 3 or the end 7 of the (right) tube blank 3 passes the area of the rollers 4, the inner tool 5 is again in the usual working position 8 advanced. This is the usual rolling of the Pipe 3 to pipe 1 according to FIG. 1.

Damit das Innenwerkzeug 5 in Förderrichtung R entlang der Längsachse 9 des Rohres 1 bewegt werden kann, sind Mittel 10 vorgesehen. Diese können hydraulisch oder elektrisch betätigt werden. So that the inner tool 5 in the conveying direction R along the longitudinal axis 9 of the Tube 1 can be moved, means 10 are provided. These can be hydraulic or operated electrically.

Der Verschiebeweg x, um den das Innenwerkzeug 5 entgegen der Förderrichtung R zurückgezogen wird, ergibt sich aus der konkreten Geometrie von Rohrluppe 3, Rohr 1 sowie Walzen 4 und wird so gewählt, dass zuverlässig ein flüssigkeitsdichtes Zusammenwalzen des Anfangs 6 bzw. des Endes 7 der Rohrluppe 3 erreicht werden kann.The displacement x by which the inner tool 5 against the conveying direction R is withdrawn, results from the concrete geometry of tube blank 3, Tube 1 and rollers 4 and is selected so that a liquid-tight reliable Rolling together the beginning 6 and the end 7 of the tube blank 3 is reached can be.

Wie Fig. 2 weiter entnommen werden kann, werden bevorzugt zumindest zwei Rohrluppen 3 aneinanderstoßend dem Planetenschrägwalzwerk 2 zugeführt. Besonders bevorzugt wird das Planetenschrägwalzwerk 2 kontinuierlich mit Rohrluppen 3 beschickt.As can be seen in FIG. 2, at least two are preferred Tube blanks 3 fed to the planetary cross-rolling mill 2. Especially the planetary diagonal rolling mill 2 is preferably operated continuously with tube blanks 3 loaded.

Für die weitere Verarbeitung des gewalzten Rohres 1 hat es sich als vorteilhaft erwiesen, dass am Austritt des Planetenschrägwalzwerks 2 die Drehung des Rohres 1 um die Längsachse 9 ermittelt wird und eine Ansteuerung der Antriebe der Walzen 4 in der Art und Weise erfolgt, dass eine Drehung des Rohres 1 um seine Längsachse 9 ausgeglichen wird, d. h. nicht stattfindet.It has proven to be advantageous for the further processing of the rolled tube 1 proved that at the outlet of the planetary cross-rolling mill 2, the rotation of the tube 1 is determined about the longitudinal axis 9 and a control of the drives of the Rolling 4 takes place in such a way that a rotation of the tube 1 around it Longitudinal axis 9 is balanced, d. H. not taking place.

Durch das Ziehen des Innenwerkzeugs 5 um den Verschiebeweg x werden nämlich massiv die Umformbedingungen geändert, was bei konstantem Antrieb des Haupt- und Überlagerungsantriebs der Walzen 4 in einem Abriss der Rohrenden resultieren kann. Da dies in höchstem Maße nachteilig wäre, kann durch die erläuterte Vorgehensweise eine automatische Kompensation der Rohrdrehung erfolgen, da auch die Drehzahlverhältnisse durch die Änderungen der Walzbedingungen durch das Ziehen des Innenwerkzeugs 5 korrigiert werden können und so ein sichereres und reproduzierbares Schließen des Rohrendes ermöglicht wird.By pulling the inner tool 5 around the displacement path x namely massively changed the forming conditions, which with constant drive of the Main and superimposition drive of the rollers 4 in a demolition of the pipe ends can result. Since this would be extremely disadvantageous, can be explained by the Procedure an automatic compensation of the pipe rotation take place, since the speed ratios due to changes in the rolling conditions can be corrected by pulling the inner tool 5 and so a safer and reproducible closing of the pipe end is made possible.

Der Vorteil des beschriebenen Verfahrens liegt darin, dass auch während des Walzens des Luppenstoßes 12 (vgl. Fig. 2) weiterhin die Walzen 4 mit der erforderlichen Walzemulsion beaufschlagt und das auslaufende Rohr 1 gekühlt werden können, ohne dass Walzemulsion bzw. Kühlwasser in das Innere des Rohres 1 gelangt. Durch den Schutz der Rohrinnenseite wird eine problemlose Weiterverarbeitung des Rohres 1 ermöglicht. Gleichzeitig werden die Walzen 4 gut geschmiert und das auslaufende Rohr 1 gekühlt. Durch die konstante Kühlung bis zum Rohrende findet bei Kupfer und Kupferlegierungen keine Oxidation durch eine zu hohe Walzguttemperatur beim Auslauf aus dem Planetenschrägwalzwerk 2 statt, woraus ein verringerter Schrottanteil resultiert. The advantage of the method described is that even during the Rolling the slug joint 12 (see FIG. 2) continues to roll 4 with the required Rolling emulsion is applied and the emerging pipe 1 are cooled can, without rolling emulsion or cooling water into the interior of the tube 1 arrives. By protecting the inside of the pipe, it is easy to process further of the tube 1 allows. At the same time, the rollers 4 are well lubricated and cooled the outlet pipe 1. Thanks to constant cooling down to the end of the pipe does not find any oxidation due to excessive copper and copper alloys Rolled material temperature at the outlet from the planetary diagonal rolling mill 2 instead of what a reduced proportion of scrap results.

Bezugszeichenliste:LIST OF REFERENCE NUMBERS

11
Rohrpipe
22
PlanetenschrägwalzwerkPlanetary cross rolling mill
33
Rohrluppetube blank
44
Walzeroller
55
Innenwerkzeuginternal tool
66
Anfang der RohrluppeBeginning of the pipe blank
77
Ende der RohrluppeEnd of the pipe blank
88th
Arbeitsposition des InnenwerkzeugsWorking position of the inner tool
99
Längsachse des RohresLongitudinal axis of the pipe
1010
Mittel zum Bewegen des InnenwerkzeugsMeans for moving the inner tool
1111
zurückgezogene Position des Innenwerkzeugsretracted position of the inner tool
1212
LuppenstoßLuppenstoß
RR
Förderrichtungconveying direction
xx
Verschiebewegdisplacement

Claims (10)

Verfahren zur Herstellung von Rohren (1) aus metallischem Werkstoff in einem Planetenschrägwalzwerk (2), bei dem eine Rohrluppe (3) dem Planetenschrägwalzwerk (2) zugeführt und zwischen einer Anzahl Walzen (4) und einem dornförmigen Innenwerkzeug (5) zum Rohr (1) gewalzt wird,
dadurch gekennzeichnet, dass das Innenwerkzeug (5) zu dem Zeitpunkt, zu dem der Anfang (6) einer Rohrluppe (3) und/oder das Ende (7) einer Rohrluppe (3) in den Bereich der Walzen (4) eintritt, gegen die Förderrichtung (R) der Rohrluppe (3) aus seiner Arbeitsposition (8) um einen vorbestimmten Verschiebeweg (x) zurückgezogen wird und nachdem der Anfang (6) der Rohrluppe (3) und/oder das Ende (7) der Rohrluppe (3) den Bereich der Walzen (4) passiert hat wieder in seine Arbeitsposition (8) vorgeschoben wird.
Method for producing pipes (1) made of metallic material in a planetary cross-rolling mill (2), in which a tube blank (3) is fed to the planetary cross-rolling mill (2) and between a number of rolls (4) and a mandrel-shaped inner tool (5) to form the pipe (1 ) is rolled,
characterized in that the inner tool (5) at the time at which the beginning (6) of a tube blank (3) and / or the end (7) of a tube blank (3) enters the area of the rollers (4) against which Conveying direction (R) of the tube blank (3) is withdrawn from its working position (8) by a predetermined displacement path (x) and after the beginning (6) of the tube blank (3) and / or the end (7) of the tube blank (3) Area of the rollers (4) has passed back into its working position (8).
Verfahren nach Anspruch 1,
dadurch gekennzeichnet, dass der Anfang (6) der Rohrluppe (3) und/oder das Ende (7) der Rohrluppe (3) bei zurückgezogenem Innenwerkzeug (5) flüssigkeitsdicht von den Walzen (4) zusammengewalzt wird.
Method according to claim 1,
characterized in that the beginning (6) of the tube blank (3) and / or the end (7) of the tube blank (3) is rolled liquid-tight by the rollers (4) when the inner tool (5) is withdrawn.
Verfahren nach Anspruch 1 oder 2,
dadurch gekennzeichnet, dass mindestens zwei Rohrluppen (3) aneinanderstoßend dem Planetenschrägwalzwerk (2) zugeführt werden.
Method according to claim 1 or 2,
characterized in that at least two tube blanks (3) are fed to the planetary cross-rolling mill (2) in abutting manner.
Verfahren nach einem der Ansprüche 1 bis 3,
dadurch gekennzeichnet, dass das Planetenschrägwalzwerk (2) kontinuierlich mit Rohrluppen (3) beschickt wird.
Method according to one of claims 1 to 3,
characterized in that the planetary diagonal rolling mill (2) is continuously fed with pipe brackets (3).
Verfahren nach einem der Ansprüche 1 bis 4,
dadurch gekennzeichnet, dass durch Messung der Drehung des gewalzten Rohres (1) um seine Längsachse (9) und gesteuerte oder geregelte Ansteuerung des Antriebs bzw. der Antriebe der Walzen (4) eine Drehung des Rohres (1) um seine Längsachse (9) ausgeglichen wird.
Method according to one of claims 1 to 4,
characterized in that by measuring the rotation of the rolled tube (1) about its longitudinal axis (9) and controlled or regulated actuation of the drive or drives of the rollers (4), a rotation of the tube (1) about its longitudinal axis (9) is compensated becomes.
Verfahren nach Anspruch 5,
dadurch gekennzeichnet, dass der gesteuerte oder geregelte Antrieb als Hauptantrieb der Walzen (4) betrieben wird.
Method according to claim 5,
characterized in that the controlled or regulated drive is operated as the main drive of the rollers (4).
Verfahren nach Anspruch 5,
dadurch gekennzeichnet, dass der gesteuerte oder geregelte Antrieb als Überlagerungsantrieb der Walzen (4) betrieben wird.
Method according to claim 5,
characterized in that the controlled or regulated drive is operated as a superposition drive of the rollers (4).
Verfahren nach einem der Ansprüche 1 bis 7,
dadurch gekennzeichnet, dass die Rohrluppe (3) und/oder das Rohr (1) einer Kühlung mit flüssigem Kühlmedium unterzogen wird.
Method according to one of claims 1 to 7,
characterized in that the tube blank (3) and / or the tube (1) is subjected to cooling with liquid cooling medium.
Planetenschrägwalzwerk (2) zur Herstellung von Rohren (1) aus metallischem Werkstoff, das eine Anzahl Walzen (4) und ein Innenwerkzeug (5) aufweist, so dass eine Rohrluppe (3) im Spalt zwischen den Walzen (4) und dem Innenwerkzeug (5) zum Rohr (1) gewalzt werden kann, insbesondere zur Durchführung des Verfahrens nach einem der Ansprüche 1 bis 8,
gekennzeichnet durch
Mittel (10) zum zeitlich gesteuerten oder geregelten Zurückziehen des Innenwerkzeugs (5) aus seiner Arbeitsposition (8) um einen vorbestimmten Verschiebeweg (x) entgegen der Förderrichtung (R) der Rohrluppe (3) sowie zum zeitlich gesteuerten oder geregelten Zurückbewegen des Innenwerkzeugs (5) in seine Arbeitsposition (8).
Planetary diagonal rolling mill (2) for producing pipes (1) from metallic material, which has a number of rolls (4) and an inner tool (5), so that a tube blank (3) in the gap between the rolls (4) and the inner tool (5 ) can be rolled into a tube (1), in particular for carrying out the method according to one of claims 1 to 8,
marked by
Means (10) for the time-controlled or regulated retraction of the inner tool (5) from its working position (8) by a predetermined displacement path (x) against the conveying direction (R) of the tube blank (3) and for the time-controlled or regulated retraction of the inner tool (5 ) in its working position (8).
Planetenschrägwalzwerk nach Anspruch 9,
dadurch gekennzeichnet, dass die Mittel (10 ) als hydraulischer oder elektrischer Linearaktuator ausgebildet sind.
Planetary cross-rolling mill according to claim 9,
characterized in that the means (10) are designed as hydraulic or electrical linear actuators.
EP04001525A 2003-04-12 2004-01-24 Method and device for the manufacturing of a tube from a metallic material Expired - Lifetime EP1466674B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE10316910 2003-04-12
DE10316910A DE10316910B3 (en) 2003-04-12 2003-04-12 Production of metallic pipes comprises rolling the start of the pipe loop and/or the end of the pipe loop together using an inner tool

Publications (3)

Publication Number Publication Date
EP1466674A2 true EP1466674A2 (en) 2004-10-13
EP1466674A3 EP1466674A3 (en) 2005-06-15
EP1466674B1 EP1466674B1 (en) 2006-07-19

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EP (1) EP1466674B1 (en)
JP (1) JP2004314172A (en)
KR (1) KR100602436B1 (en)
CN (1) CN1264618C (en)
AT (1) ATE333328T1 (en)
AU (1) AU2004200873B9 (en)
CA (1) CA2463351A1 (en)
DE (2) DE10316910B3 (en)

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DE102005044777A1 (en) * 2005-09-20 2007-03-29 Sms Meer Gmbh Method and rolling mill for producing a seamless pipe
US7647133B2 (en) * 2005-10-12 2010-01-12 Alpine Engineered Products, Inc. Method and apparatus for optimization of cutting lumber
US20090144959A1 (en) * 2007-12-11 2009-06-11 Colletti Michael J Method for assembly of a direct injection fuel rail
DE102011010646A1 (en) * 2010-03-02 2011-09-08 Sms Meer Gmbh Hot tool and method for its production
DE102012008803A1 (en) * 2012-05-07 2013-11-07 Kocks Technik Gmbh & Co. Kg Method for rolling hollow cylinder slug in cross-rolling mill e.g. planet cross-rolling mill, involves forming mandrel bar portion in transforming zone, whose cross section is smaller than cross section of another mandrel bar portion
DE102018003434A1 (en) * 2018-04-27 2019-10-31 Sms Group Gmbh Cross rolling mill with hydraulic roller adjustment

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JPS58215209A (en) * 1982-06-07 1983-12-14 Kawasaki Heavy Ind Ltd Mandrel device of planetary type skew rolling mill for producing seamless steel pipe
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KR100602436B1 (en) 2006-07-19
CA2463351A1 (en) 2004-10-12
KR20040089436A (en) 2004-10-21
ATE333328T1 (en) 2006-08-15
EP1466674B1 (en) 2006-07-19
US6976377B2 (en) 2005-12-20
AU2004200873B2 (en) 2006-08-31
CN1264618C (en) 2006-07-19
US20040200249A1 (en) 2004-10-14
AU2004200873A1 (en) 2004-10-28
JP2004314172A (en) 2004-11-11
EP1466674A3 (en) 2005-06-15
CN1535774A (en) 2004-10-13
DE10316910B3 (en) 2004-09-02
AU2004200873B9 (en) 2007-03-22
DE502004000968D1 (en) 2006-08-31

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