EP1814679A1 - Method for production of a seamless hot-finished steel tube and device for carrying out said method - Google Patents

Method for production of a seamless hot-finished steel tube and device for carrying out said method

Info

Publication number
EP1814679A1
EP1814679A1 EP05803680A EP05803680A EP1814679A1 EP 1814679 A1 EP1814679 A1 EP 1814679A1 EP 05803680 A EP05803680 A EP 05803680A EP 05803680 A EP05803680 A EP 05803680A EP 1814679 A1 EP1814679 A1 EP 1814679A1
Authority
EP
European Patent Office
Prior art keywords
forging
hollow block
forming step
jaws
rolling
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
EP05803680A
Other languages
German (de)
French (fr)
Other versions
EP1814679B1 (en
Inventor
Christoph Prasser
Rolf Kümmerling
Stefan Wiedenmaier
Pierre Lefebvre
Rupert Wieser
Robert Koppensteiner
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.)
Vallourec Deutschland GmbH
Original Assignee
V&M Deutschland 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 V&M Deutschland GmbH filed Critical V&M Deutschland GmbH
Priority to PL05803680T priority Critical patent/PL1814679T3/en
Publication of EP1814679A1 publication Critical patent/EP1814679A1/en
Application granted granted Critical
Publication of EP1814679B1 publication Critical patent/EP1814679B1/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21B—ROLLING OF METAL
    • B21B23/00—Tube-rolling not restricted to methods provided for in only one of groups B21B17/00, B21B19/00, B21B21/00, e.g. combined processes planetary tube rolling, auxiliary arrangements, e.g. lubricating, special tube blanks, continuous casting combined with tube rolling
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21B—ROLLING OF METAL
    • B21B19/00—Tube-rolling by rollers arranged outside the work and having their axes not perpendicular to the axis of the work
    • B21B19/02—Tube-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
    • B21B19/06—Rolling hollow basic material, e.g. Assel mills
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21B—ROLLING OF METAL
    • B21B45/00—Devices for surface or other treatment of work, specially combined with or arranged in, or specially adapted for use in connection with, metal-rolling mills
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21J—FORGING; HAMMERING; PRESSING METAL; RIVETING; FORGE FURNACES
    • B21J5/00—Methods for forging, hammering, or pressing; Special equipment or accessories therefor
    • B21J5/06—Methods for forging, hammering, or pressing; Special equipment or accessories therefor for performing particular operations
    • B21J5/10—Piercing billets
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21J—FORGING; HAMMERING; PRESSING METAL; RIVETING; FORGE FURNACES
    • B21J7/00—Hammers; Forging machines with hammers or die jaws acting by impact
    • B21J7/02—Special design or construction
    • B21J7/14—Forging machines working with several hammers
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21B—ROLLING OF METAL
    • B21B15/00—Arrangements for performing additional metal-working operations specially combined with or arranged in, or specially adapted for use in connection with, metal-rolling mills
    • B21B15/0035—Forging or pressing devices as units
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21B—ROLLING OF METAL
    • B21B19/00—Tube-rolling by rollers arranged outside the work and having their axes not perpendicular to the axis of the work
    • B21B19/02—Tube-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
    • B21B19/04—Rolling basic material of solid, i.e. non-hollow, structure; Piercing, e.g. rotary piercing mills

Definitions

  • the invention relates to a method for producing a seamlessly hot-finished steel tube according to the preamble of claim 1.
  • DE 1 906 961 A1 discloses a method for producing seamless tubes from hollow bodies produced in continuous casting.
  • the cast strand is divided and the respective section with the aid of a Inner tool and hot forging pre-stretched. Thereafter, the prestretched section is rolled out on a continuous rolling train to a pre-pipe (billet) and produced by subsequent stretch-reducing a finished tube.
  • This proposed method is intended to be applied to the mass production of small diameter tubes from continuously cast hollow bodies. The proposal is to help overcome the problem of heavy use of the skew rolls in pre-stretching.
  • the object of the invention is to provide a production method for seamless hot-finished steel tubes, for the dimensional range of 5 "to 30" outer diameter and wall thickness ⁇ 0.1 x outer diameter for the range 5 "to ⁇ 16" outer diameter or> 40 mm wall thickness for the Range 16 "to 30" outer diameter is superior to the known method even for small batches in terms of deployment and productivity.
  • the hitherto known second and third characterized by rolling ge forming step is replaced by a forming step in the form of a radial forging process using an inserted into the Hohiblock inner tool and at least two acting on the lateral surface of the hollow block forging jaws Forging machine, wherein the hollow block clocked in the phase of the idle stroke of the forging jaws is rotated and moved axially.
  • the rotation and the axial feed of the hollow block can take place simultaneously or with a time offset.
  • the proposed method has the advantage that even thick-walled tubes can be produced optimally and the changeover times are low. Similar to the vocational, the stretching process by forging still achieves a high elongation even with very thick-walled pipes. Thus, even with thick-walled pipes large pipe lengths can be displayed.
  • a further advantage is the fact that in the majority of cases the otherwise necessary downstream sizing mill can be dispensed with, since after the stretching process by forging the ready-to-use tube produced in this way has finished tube quality.
  • the proposed forging process is then particularly effective and qualitatively favorable, if instead of two, a total of four forging jaws are used, which act in a plane synchronously on the lateral surface of the hollow block. For better distribution, in particular the thermal load, it may be advantageous to move the inner tool during forging in the same direction or opposite to the axial feed.
  • the first forming step may optionally be a hole punching or a punching by means of oblique rolls. After the hole pressing the soil is separated or pierced. The separation can be done by flame cutting or hot sawing.
  • the hollow block produced by punching or by punching by means of oblique rolls can be forged directly or pre-stretched by a subsequent oblique rolling before it receives its finished pipe dimension by forging.
  • the separation or piercing of the soil can be omitted after the hole pressing.
  • a two-roll or three-roll machine is used for skew rolling.
  • descaling of the outer and / or inner surface is advantageous.
  • the forged ready-made pipe is either immediately ready for delivery after the usual finishing steps such as cutting to length, visual inspection, marking etc. or is first subjected to a heat treatment and / or a non-destructive test.
  • the heat treatment may be normalizing or tempering. Depending on the straightness requirement, straightening is required.
  • over-sanding or other suitable chip-removing machining of the outer surface may be necessary to eliminate the small bumps caused by the forging process.
  • the starting block to be used is either a section of a continuous casting rod, preferably a round-strand casting rod or a cast ingot (ingot).
  • a continuous casting rod preferably a round-strand casting rod or a cast ingot (ingot).
  • pre-forming of continuous casting by rolling or forging may be required for materials that are difficult to form.
  • the warming of the Output block is done in a known manner in a rotary hearth or in a walking beam oven. At high weights, other heating furnaces, such. B. Tieföfen conceivable.
  • the device for carrying out the method is characterized by a radial forging machine having a forging stand and at least two forge jaws arranged interchangeably therein.
  • the rotational movement and the axial feed of the hollow block is carried out by a respective arranged on the inlet as on the outlet side manipulator.
  • a guide at least on the outlet side between the manipulator and forging. This is to ensure that the forged finished pipe leaving the forging stand is kept as far as possible in the center of the axle.
  • the forging process with straight forging jaws is possible, but the surface quality is decisively improved when each forging jaw, viewed in longitudinal section on the side facing the workpiece, has a narrowing inlet section with an adjoining smoothing section.
  • the inlet region has a concave curvature, wherein the radius in the respective cross-sectional plane is always greater than the current radius of the hollow block in engagement.
  • the greater curvature in the cross-sectional plane avoids a stapling effect.
  • it is not necessary to hold a separate set of forged chucks for each inlet diameter of the hollow block but rather a range of different inlet diameters can be covered with one set.
  • the inner diameter and the inner contour seen over the length of the forged finished tube is essentially determined by the nature of the inner tool - preferably in the form of a cylindrical dome.
  • a slightly conical dome increases the play between the forged finish pipe and the inner tool, so that the deduction of the finished pipe is facilitated by the inner tool.
  • the conicity must be low, otherwise the wall thickness over the length would change in an inadmissible manner.
  • the use of a stepped dome would be advantageous for making axles with thickened ends. Depending on the type of gradation and the production of multiple axes would be possible from a hollow block. The separation would take place afterwards.
  • FIG. 1 shows the method according to the invention with a perforating unit (inclined roller),
  • Figure 2 shows the method according to the invention with a perforating unit (inclined roller) and a downstream pre-stretching unit (Elongator).
  • FIG. 3 shows a longitudinal section of a hollow block in engagement
  • Figure 1 shows a schematic representation of the inventive method with only one hole assembly as the first forming step.
  • a block 1 divided off from a steel continuous casting rod is placed in a rotary hearth furnace 2 and heated to forming temperature, for. B. 125O 0 C, heated. After heating and leaving the rotary hearth furnace 2, the heated block is fed via a roller table 3 a punching unit.
  • the perforating unit is designed as a cross rolling mill 4 with two oblique rollers 5, 5 '.
  • This includes an inner tool consisting of a piercer 6 and a support rod 7. Since the punching by means of oblique rollers is well known, it is unnecessary to take a closer look at it.
  • a second manipulator 12 takes over the finished tube 16 on the outlet side in order to complete the forging process.
  • the forging unit is shown here only schematically and has here, not shown, the hollow block 8 encompassing forging jaws, which act on the lateral surface in order to stretch by reducing both the outer diameter and the wall thickness of the hollow block 8.
  • the ready-to-use tube 16 is transported according to the arrow 15 into the finishing line in order to make it ready for shipment there.
  • the finishing usually comprises a cutting to length, a visual inspection, a marking and, depending on requirements, a previously performed heat treatment and / or a non-destructive testing.
  • the hot-finished tube 16 is shown shorter than would correspond to the extension.
  • D. x 123 mm Wd is formed from a block 1 with a dimension of 406 mm round and a length of 2.8 m after punching. produced with a length of 3.5 m.
  • the hot-made tube 16 has an outer diameter of 203 mm with a wall thickness of 50 mm and a length of 15 meters.
  • FIG. 2 shows a variant of the method according to Figure 1, wherein the same reference numerals have been selected for the same parts.
  • the first forming step is identical to the forming step illustrated in FIG. 1 until a hollow block 8 is produced.
  • the second forming step Before the stretching process by forging, the second forming step, however, a Vorstreckaggregat, a so-called Elongator 17, is arranged.
  • the Elongator is formed in this embodiment as a cross rolling mill with two inclined rollers 18, 18 'and an inner tool, consisting of a plug 19 which is connected to a support rod 20.
  • the hollow block 8 leaving the perforating unit is fed via a transverse transport 9 to the input side of the elongator 17.
  • a transverse transport 9 By the oblique rolling of the hollow block is the eighth pre-stretched and reduced in the wall thickness hollow block 8 'produced.
  • the diameter of the hollow block 8 ' may be equal to, smaller or larger after Vorumblen.
  • a hollow block 8 measuring 500 mm in diameter is dimensioned 500 mm round and a length of 4 m after punching is dimensioned 500 mm. produced with a length of 4.3 m.
  • a hollow block 8 ' After passing through the Elongators is a hollow block 8 'with the dimensions 480 mm ä. D. x 120 mm Wd. and 5.8 m in length.
  • the ready-to-use pipe 16 After the forging process, the ready-to-use pipe 16 has an outer diameter of 339.7 mm, a wall thickness of 75 mm and a length of 12.6 m.
  • FIG. 3 shows, in a longitudinal section, a hollow block 8 to be forged, which engages from the left into the forging machine and leaves the forging machine on the right as a ready-to-use pipe 16.
  • four forging jaws 21, 21 ', 21 ", 21'" and on the inside a cylindrical mandrel 22 together.
  • the mandrel 22 is held in place by a support rod 23, but may alternatively be moved axially forward or backward during the forging process.
  • the rotary arrow 24 and the axial arrow 25 are intended to illustrate that during the idle stroke of the forging jaws 21 - 21 '"of the hollow block 8 is rotated and pushed further axially.
  • Each forging jaw 21-21 '" has in longitudinal section a predominantly conically shaped inlet section 26 and an adjoining smoothing section 27.
  • the inlet section 26 can also be slightly convexly curved.
  • all the forging jaws 21-21 '' have a concave curvature, as a rule the curvature is a circular arc whose radius is greater than the actual radius of the part to be forged.
  • the movement arrows 28 shown in FIGS. 3 and 4 are intended to illustrate the radial stroke of the respective forging jaw 21 - 21 "'.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Forging (AREA)
  • Heat Treatment Of Steel (AREA)
  • Metal Rolling (AREA)
  • Heat Treatment Of Articles (AREA)

Abstract

In a method of making a seamless hot-finished steel pipe a billet heated to a shaping temperature is pierced by a first shaping to a thick-walled hollow ingot which subsequently undergoes a radial forging process using an internal tool inserted in the hollow ingot and at least two forging jaws of a forging machine. The forging jaws act on the outer surface area of the hollow ingot, wherein the hollow ingot is turned and axially advanced in a clocked manner in the idle stroke phase of the forging jaws.

Description

VERFAHREN ZUM HERSTELLEN EINES NAHTLOS WARMGEFERTIGTEN STAHLROHRES UND EINRICHTUNG ZUR DURCHFÜHRUNG DES VERFAHRENS METHOD FOR PRODUCING A SEAMLESS STEEL TUBE SEWN SEAMLESS AND DEVICE FOR CARRYING OUT SAID METHOD
Beschreibungdescription
Die Erfindung betrifft ein Verfahren zum Herstellen eines nahtlos warmgefertigten Stahlrohres gemäß dem Oberbegriff des Patentanspruches 1.The invention relates to a method for producing a seamlessly hot-finished steel tube according to the preamble of claim 1.
Nach der Erfindung der Brüder Mannesmann aus einem erwärmten Block ein dickwandiges Hohlblockrohr zu erzeugen, hat es verschiedene Vorschläge gegeben, dieses Hohlblockrohr in gleicher Hitze in einer weiteren Warmarbeitsstufe zu strecken. Stichworte dazu sind das Kontiwalzverfahren, das Stoßbankverfahren, das Stopfenwalzverfahren und das Pilgerschrittverfahren (Stahlrohr-Handbuch, 10. Auflage, Vulkan-Verlag Essen 1986, III. Herstellverfahren).After the invention of the brothers Mannesmann from a heated block to produce a thick-walled hollow block pipe, there have been various proposals to stretch this hollow block pipe in the same heat in another hot work stage. Key words are the Kontiwalzverfahren, the Stoßbankverfahren, the plug rolling process and the pilgrim step method (Stahlrohr Manual, 10th edition, Vulkan-Verlag Essen 1986, 3rd Manufacturing method).
Alle genannten Verfahren haben für verschiedene Abmessungsbereiche und Werkstoffe ihre Vorzüge, wobei es auch Überschneidungen gibt. Für den mittleren Abmessungsbereich von 5„ bis 18„ kommen das Konti- und Stopfenwalzverfahren, für den Abmessungsbereich bis 26„ das Pilgerschrittverfahren zum Einsatz. Bei dickerer Wand im Bereich von > 30 mm sind das Konti- und Stopfenwalzverfahren weniger geeignet, während das Pilgerschrittverfahren zwar keine Probleme mit der Wanddicke hat, aber im Fertigungstakt langsamer ist. Nachteilig bei allen genannten Verfahren sind die mehr oder weniger langen Umrüstzeiten bei Abmessungswechsel.All these methods have their advantages for different dimensions and materials, although there are also overlaps. For the medium size range from 5 "to 18", the continuous and stopper rolling method is used, for the size range up to 26 "the pilgrim stepping method is used. With a thicker wall in the range of> 30 mm, the continuous and plug rolling process are less suitable, while the pilgering process has no problems with the wall thickness, but is slower in the production cycle. A disadvantage of all these methods are the more or less long changeover times with dimensional change.
Kennzeichnend für die Herstellung nahtloser Rohre aus einem erwärmten Block sind die drei Schritte Lochen - Strecken - Reduzierwalzen (H. Biller, Das Walzen nahtloser Rohre - Pro¬ bleme der Verfahrensauswahl, Stahl und Eisen 106 (1986) Nr. 9, Seite 431 - 437).Characteristic of the production of seamless tubes from a heated block are the three steps punching - stretching - reduction rolls (H. Biller, The Seamless Tubing - Probes of the process selection, Stahl and Eisen 106 (1986) No. 9, pages 431-437 ).
Schon seit längerem hat man versucht einen Schritt einzusparen, um die Herstell- und Anlagekosten zu senken. Diese Bemühungen sind bislang wenig erfolgreich gewesen.For some time, attempts have been made to save a step in order to reduce the manufacturing and installation costs. These efforts have been unsuccessful so far.
In der DE 1 906 961 A1 ist ein Verfahren zum Herstellen von nahtlosen Rohren aus im Strangguss hergestellten Hohlkörpern offenbart. Bei diesem bekannten Verfahren wird der gegossene Strang geteilt und das jeweilige Teilstück unter Zuhilfenahme eines Innenwerkzeuges und Warmwalzschmiedens vorgestreckt. Danach wird das vorgestreckte Teilstück auf einer kontinuierlichen Walzstraße zu einem Vorrohr (Luppe) ausgewalzt und durch nachfolgendes Streckreduzieren daraus ein Fertigrohr erzeugt. Dieses vorgeschlagene Verfahren soll angewendet werden bei der Massenproduktion von Rohren mit kleinen Durchmessern aus im Strangguss herstellten Hohlkörpern. Der Vorschlag soll das Problem der starken Beanspruchung der Schrägwalzen beim Vorstrecken überwinden helfen.DE 1 906 961 A1 discloses a method for producing seamless tubes from hollow bodies produced in continuous casting. In this known method, the cast strand is divided and the respective section with the aid of a Inner tool and hot forging pre-stretched. Thereafter, the prestretched section is rolled out on a continuous rolling train to a pre-pipe (billet) and produced by subsequent stretch-reducing a finished tube. This proposed method is intended to be applied to the mass production of small diameter tubes from continuously cast hollow bodies. The proposal is to help overcome the problem of heavy use of the skew rolls in pre-stretching.
Aufgabe der Erfindung ist es, ein Herstellungsverfahren für nahtlose warmgefertigte Stahlrohre anzugeben, das für den Abmessungsbereich von 5" bis 30" Außendurchmesser und Wanddicken ≥ 0,1 x Außendurchmesser für den Bereich 5" bis < 16" Außendurchmesser oder > 40 mm Wanddicke für den Bereich 16" bis 30" Außendurchmesser auch für kleine Losgrößen im Hinblick auf Ausbringen und Produktivität den bekannten Verfahren überlegen ist.The object of the invention is to provide a production method for seamless hot-finished steel tubes, for the dimensional range of 5 "to 30" outer diameter and wall thickness ≥ 0.1 x outer diameter for the range 5 "to <16" outer diameter or> 40 mm wall thickness for the Range 16 "to 30" outer diameter is superior to the known method even for small batches in terms of deployment and productivity.
Diese Aufgabe wird ausgehend vom Oberbegriff in Verbindung mit dem kennzeichnenden Teil des Anspruches 1 gelöst. Vorteilhafte Weiterbildungen sind Gegenstand von Unteransprüchen.This object is achieved on the basis of the preamble in conjunction with the characterizing part of claim 1. Advantageous developments are the subject of dependent claims.
Nach der Lehre der Erfindung wird der bislang bekannte zweite und dritte durch Walzen ge¬ kennzeichnete Umformschritt (Streckwalzen und Reduzierwalzen) ersetzt durch einen Umformschritt in Form eines Radialschmiedeprozesses unter Verwendung eines in den Hohiblock eingeschobenen Innenwerkzeuges und mindestens zwei auf die Mantelfläche des Hohlblockes einwirkender Schmiedebacken einer Schmiedemaschine, wobei der Hohlblock getaktet in der Phase des Leerhubes der Schmiedebacken gedreht und axial verschoben wird. Je nach Art der Steuerung kann die Drehung und der axiale Vorschub des Hohlblockes gleichzeitig oder zeitlich versetzt erfolgen.According to the teaching of the invention, the hitherto known second and third characterized by rolling ge forming step (stretching rollers and reduction rollers) is replaced by a forming step in the form of a radial forging process using an inserted into the Hohiblock inner tool and at least two acting on the lateral surface of the hollow block forging jaws Forging machine, wherein the hollow block clocked in the phase of the idle stroke of the forging jaws is rotated and moved axially. Depending on the type of control, the rotation and the axial feed of the hollow block can take place simultaneously or with a time offset.
Das vorgeschlagene Verfahren hat den Vorteil, dass auch dickwandige Rohre optimal herstellbar und die Umrüstzeiten gering sind. Ähnlich dem Pilgern wird beim Streckprozess durch Schmieden auch bei sehr dickwandigen Rohren noch eine hohe Streckung erreicht. Damit sind auch bei dickwandigen Rohren große Rohrlängen darstellbar. Ein weiterer Vorteil ist darin zu sehen, dass in den überwiegenden Fällen auf das ansonsten notwendige nachgeschaltete Maßwalzwerk verzichtet werden kann, da nach dem Streckpro¬ zess durch Schmieden das so erzeugte warmfertige Rohr Fertigrohrqualität aufweist. Der vorgeschlagene Schmiedeprozess ist dann besonders effektiv und qualitativ günstig, wenn statt zwei, insgesamt vier Schmiedebacken verwendet werden, die in einer Ebene synchron auf die Mantelfläche des Hohlblockes einwirken. Zur besseren Verteilung, insbesondere der thermischen Belastung, kann es vorteilhaft sein, das Innenwerkzeug während des Schmiedens in gleicher Richtung bzw. entgegengesetzt des axialen Vorschubes zu bewegen.The proposed method has the advantage that even thick-walled tubes can be produced optimally and the changeover times are low. Similar to the pilgrimage, the stretching process by forging still achieves a high elongation even with very thick-walled pipes. Thus, even with thick-walled pipes large pipe lengths can be displayed. A further advantage is the fact that in the majority of cases the otherwise necessary downstream sizing mill can be dispensed with, since after the stretching process by forging the ready-to-use tube produced in this way has finished tube quality. The proposed forging process is then particularly effective and qualitatively favorable, if instead of two, a total of four forging jaws are used, which act in a plane synchronously on the lateral surface of the hollow block. For better distribution, in particular the thermal load, it may be advantageous to move the inner tool during forging in the same direction or opposite to the axial feed.
Bei großen Streckgraden (> 4) und geringer Wanddicke (< 30 mm) kann es erforderlich sein, vor dem Schmieden im Hohlblock ein Trenn- und Schmiermittel z. B. auf Phosphaterm- oder Graphitbasis anzubringen. Dadurch wird vermieden, dass es zu einem Festbacken des ge¬ schmiedeten Hohlblockes auf dem Innenwerkzeug kommt.For large degrees of stretch (> 4) and small wall thickness (<30 mm), it may be necessary, before forging in the hollow block a release and lubricant z. B. on Phosphaterm- or graphite-based. This avoids that it comes to a caking of the forged hollow block on the inner tool.
Der erste Umformschritt kann wahlweise ein Lochpressen oder ein Lochen mittels Schrägwalzen sein. Nach dem Lochpressen wird der Boden abgetrennt oder durchstoßen. Das Abtrennen kann über Brennschneiden oder über Warmsägen erfolgen. Der durch Lochpressen oder durch Lochen mittels Schrägwalzen erzeugte Hohlblock kann direkt geschmiedet oder durch ein nachgeschaltetes Schrägwalzen vorgestreckt werden, bevor er durch das Schmieden seine Fertigrohrabmessung erhält.The first forming step may optionally be a hole punching or a punching by means of oblique rolls. After the hole pressing the soil is separated or pierced. The separation can be done by flame cutting or hot sawing. The hollow block produced by punching or by punching by means of oblique rolls can be forged directly or pre-stretched by a subsequent oblique rolling before it receives its finished pipe dimension by forging.
Bei dieser Verfahrensweise kann das Abtrennen bzw. das Durchstoßen des Bodens nach dem Lochpressen entfallen. Für das Schrägwalzen wird eine Zweiwalzen- oder Dreiwalzenmaschine eingesetzt. Je nach Vorverfahren ist eine Entzunderung der Außen- und/oder Innenoberfläche vorteilhaft.In this procedure, the separation or piercing of the soil can be omitted after the hole pressing. For skew rolling, a two-roll or three-roll machine is used. Depending on the preliminary process, descaling of the outer and / or inner surface is advantageous.
Das geschmiedete Fertigrohr ist nach den üblichen Adjustageschritten wie Ablängen, visuelle Prüfung, Markieren usw. entweder sofort auslieferungsfähig oder wird zuvor einer Wärmebehandlung und/oder einer zerstörungsfreien Prüfung unterzogen. Die Wärmebehandlung kann ein Normalisieren oder ein Vergüten sein. Je nach Geradheitsanforderung ist ein Richten erforderlich. Ebenso kann bei entsprechenden Lieferanforderungen ein Überschleifen oder ein anderes geeignetes spanabtragendes Bearbeiten der Außenoberfläche notwendig sein, um die durch den Schmiedeprozess hervorgerufenen geringen Unebenheiten zu beseitigen.The forged ready-made pipe is either immediately ready for delivery after the usual finishing steps such as cutting to length, visual inspection, marking etc. or is first subjected to a heat treatment and / or a non-destructive test. The heat treatment may be normalizing or tempering. Depending on the straightness requirement, straightening is required. Likewise, with appropriate delivery requirements, over-sanding or other suitable chip-removing machining of the outer surface may be necessary to eliminate the small bumps caused by the forging process.
Der einzusetzende Ausgangsblock ist entweder ein Abschnitt eines Stranggussstabes, vor¬ zugsweise ein Rundstranggussstab oder ein Gussblock (Ingot). Je nach verwendetem Lochprozess kann bei schwer umformbaren Werkstoffen eine Vorverformung des Stranggusses durch Walzen oder Schmieden erforderlich sein. Die Erwärmung des Ausgangsblockes erfolgt in bekannter Weise in einem Drehherd- oder in einem Hubbalkenofen. Bei hohen Gewichten sind auch andere Erwärmungsöfen, wie z. B. Tieföfen, denkbar.The starting block to be used is either a section of a continuous casting rod, preferably a round-strand casting rod or a cast ingot (ingot). Depending on the hole process used, pre-forming of continuous casting by rolling or forging may be required for materials that are difficult to form. The warming of the Output block is done in a known manner in a rotary hearth or in a walking beam oven. At high weights, other heating furnaces, such. B. Tieföfen conceivable.
Die Einrichtung zur Durchführung des Verfahrens ist gekennzeichnet durch eine Radialschmiedemaschine, die einen Schmiedeständer und mindestens zwei darin auswechselbar angeordnete Schmiedebacken aufweist. Die Drehbewegung sowie der axiale Vorschub des Hohlblockes erfolgt durch je einen auf der Einlauf- wie auf der Auslaufseite angeordneten Manipulator. Zur Minimierung eines möglichen Richtaufwandes hat es sich als vorteilhaft herausgestellt, zumindest auf der Auslaufseite zwischen Manipulator und Schmiedeständer eine Führung anzuordnen. Diese soll sicherstellen, dass das den Schmiedeständer verlassende geschmiedete Fertigrohr möglichst auf Achsmitte gehalten wird.The device for carrying out the method is characterized by a radial forging machine having a forging stand and at least two forge jaws arranged interchangeably therein. The rotational movement and the axial feed of the hollow block is carried out by a respective arranged on the inlet as on the outlet side manipulator. To minimize a possible straightening effort, it has proven to be advantageous to arrange a guide at least on the outlet side between the manipulator and forging. This is to ensure that the forged finished pipe leaving the forging stand is kept as far as possible in the center of the axle.
Prinzipiell ist der Schmiedeprozess mit geraden Schmiedebacken möglich, die Oberflächenqualität wird aber entscheidend verbessert, wenn jede Schmiedebacke auf der dem Werkstück zugewandten Seite im Längsschnitt gesehen einen sich verengenden Einlaufabschnitt mit einem daran anschließenden Glättteil aufweist. Im Querschnitt gesehen weist der Einlaufbereich eine konkave Krümmung auf, wobei der Radius in der jeweiligen Querschnittsebene immer größer ist als der aktuelle Radius des sich im Eingriff befindlichen Hohlblockes. Durch die größere Krümmung in der Querschnittsebene wird ein Klammereffekt vermieden. Es ist aber nicht erforderlich, für jeden Einlaufdurchmesser des Hohlblockes einen separaten Schmiedebackensatz vorzuhalten, vielmehr kann mit einem Satz ein Bereich verschiedener Einlaufdurchmesser abgedeckt werden.In principle, the forging process with straight forging jaws is possible, but the surface quality is decisively improved when each forging jaw, viewed in longitudinal section on the side facing the workpiece, has a narrowing inlet section with an adjoining smoothing section. Seen in cross-section, the inlet region has a concave curvature, wherein the radius in the respective cross-sectional plane is always greater than the current radius of the hollow block in engagement. The greater curvature in the cross-sectional plane avoids a stapling effect. However, it is not necessary to hold a separate set of forged chucks for each inlet diameter of the hollow block, but rather a range of different inlet diameters can be covered with one set.
Der Innendurchmesser sowie die Innenkontur über die Länge des geschmiedeten Fertigrohres gesehen wird im Wesentlichen durch die Art des Innenwerkzeuges - vorzugsweise in Form eines zylindrischen Domes - bestimmt.The inner diameter and the inner contour seen over the length of the forged finished tube is essentially determined by the nature of the inner tool - preferably in the form of a cylindrical dome.
Der Einsatz eines leicht konischen Domes erhöht das Spiel zwischen dem geschmiedeten Fertigrohr und dem Innenwerkzeug, so dass der Abzug des Fertigrohres vom Innenwerkzeug erleichtert wird. Die Konizität darf aber nur gering sein, da ansonsten die Wanddicke über die Länge gesehen sich in unzulässiger Weise verändern würde. Die Verwendung eines abgestuften Domes ließe sich vorteilhaft für die Herstellung von Achsen mit verdickten Enden nutzen. Je nach Art der Abstufung wäre auch die Herstellung mehrerer Achsen aus einem Hohlblock möglich. Die Vereinzelung würde danach erfolgen.The use of a slightly conical dome increases the play between the forged finish pipe and the inner tool, so that the deduction of the finished pipe is facilitated by the inner tool. However, the conicity must be low, otherwise the wall thickness over the length would change in an inadmissible manner. The use of a stepped dome would be advantageous for making axles with thickened ends. Depending on the type of gradation and the production of multiple axes would be possible from a hollow block. The separation would take place afterwards.
Ein weiteres Anwendungsgebiet wäre die Herstellung von Gewinderohren in Form einer Integralverbindung. Auch bestünde die Möglichkeit bei sogenannten Muffenrohren die Muffe direkt mit anzuschmieden anstatt sie separat herzustellen.Another area of application would be the production of threaded tubes in the form of an integral compound. Also, there would be the possibility of so-called socket pipes, the sleeve directly mitzuschmieden instead of producing them separately.
Anhand zweier schematischer Darstellungen wird das erfindungsgemäße Verfahren näher erläutert.Based on two schematic representations, the inventive method will be explained in more detail.
Es zeigenShow it
Figur 1 das erfindungsgemäße Verfahren mit einem Lochaggregat (Schrägwalze),FIG. 1 shows the method according to the invention with a perforating unit (inclined roller),
Figur 2 das erfindungsgemäße Verfahren mit einem Lochaggregat (Schrägwalze) und einem nachgeschaltetem Vorstreckaggregat (Elongator).Figure 2 shows the method according to the invention with a perforating unit (inclined roller) and a downstream pre-stretching unit (Elongator).
Figur 3 im Längsschnitt einen im Eingriff sich befindenden HohlblockFIG. 3 shows a longitudinal section of a hollow block in engagement
Figur 4 ein Schnitt in Richtung A - A in Figur 34 shows a section in the direction A - A in Figure 3
Figur 1 zeigt als schematische Darstellung das erfindungsgemäße Verfahren mit nur einem Lochaggregat als ersten Umformschritt. Beispielhaft wird ein von einem Stahl- Stranggussstab abgeteilter Block 1 in einen Drehherdofen 2 eingelegt und auf Umformtemperatur, z. B. 125O0C, erwärmt. Nach der Erwärmung und dem Verlassen des Drehherdofens 2 wird der erwärmte Block über einen Rollgang 3 einem Lochaggregat zugeführt.Figure 1 shows a schematic representation of the inventive method with only one hole assembly as the first forming step. By way of example, a block 1 divided off from a steel continuous casting rod is placed in a rotary hearth furnace 2 and heated to forming temperature, for. B. 125O 0 C, heated. After heating and leaving the rotary hearth furnace 2, the heated block is fed via a roller table 3 a punching unit.
In diesem Ausführungsbeispiel ist das Lochaggregat als Schrägwalzwerk 4 mit zwei Schrägwalzen 5, 5' ausgebildet. Dazu gehört ein Innenwerkzeug, bestehend aus einem Lochdorn 6 und einer Haltestange 7. Da das Lochen mittels Schrägwalzen hinlänglich bekannt ist, erübrigt sich ein näheres Eingehen darauf.In this embodiment, the perforating unit is designed as a cross rolling mill 4 with two oblique rollers 5, 5 '. This includes an inner tool consisting of a piercer 6 and a support rod 7. Since the punching by means of oblique rollers is well known, it is unnecessary to take a closer look at it.
Durch das Lochen ist aus dem Block 1 ein Hohlblock 8 erzeugt worden, der über einen Quertransport 9 zur Schmiedemaschine 10 gelangt. Der nachfolgende Streckprozess durch Radialschmieden bildet erfindungsgemäß die Zusammenfassung des ansonsten üblichen zweiten und dritten Umformschrittes anstelle des sonst üblichen Walzens, sei es als Konti-, Stopfen- oder Pilgerschrittverfahren mit nachgeschaltetem Reduzierwalzen. Nach Einfahren eines Innenwerkzeuges 11, vorzugsweise in Form eines zylindrischen Domes, wird der Hohlblock 8 durch einen auf der Einlaufseite angeordneten Manipulator 13 längs durch den Schmiedeständer 14 transportiert und gleichzeitig dabei gedreht. Diese Drehung und der axiale Vorschub des Hohlblockes 8 erfolgt getaktet in der Phase des Leerhubes der Schmiedebacken entweder gleichzeitig oder zeitlich versetzt.By punching a block 8 has been produced from the block 1, which passes through a transverse transport 9 to the forging machine 10. The subsequent stretching process by radial forging forms according to the invention the summary of the otherwise customary second and third forming step instead of the usual rolling, be it as a continuous, stopper or pilgrim step method with downstream reduction rolls. After retraction of an inner tool 11, preferably in the form of a cylindrical dome, the hollow block 8 is transported by a arranged on the inlet side manipulator 13 longitudinally through the forging stand 14 and simultaneously rotated. This rotation and the axial feed of the hollow block 8 is clocked in the phase of the idle stroke of the forging jaws either simultaneously or offset in time.
Auf der Auslaufseite übernimmt später ein zweiter Manipulator 12 das Fertigrohr 16, um den Schmiedeprozess zu Ende führen zu können. Das Schmiedeaggregat ist hier nur schematisch dargestellt und weist hier nicht dargestellte, den Hohlblock 8 umgreifende Schmiedebacken auf, die auf die Mantelfläche einwirken, um durch Verringerung sowohl des Außendurchmessers als auch der Wanddicke den Hohlblock 8 zu strecken.Later on, a second manipulator 12 takes over the finished tube 16 on the outlet side in order to complete the forging process. The forging unit is shown here only schematically and has here, not shown, the hollow block 8 encompassing forging jaws, which act on the lateral surface in order to stretch by reducing both the outer diameter and the wall thickness of the hollow block 8.
Nach dem Streckprozess durch Schmieden wird das warmfertige Rohr 16 entsprechend dem Pfeil 15 in die Adjustagelinie transportiert, um es dort versandfertig zu machen. Die Adjustage umfasst üblicherweise ein Ablängen, eine visuelle Prüfung, ein Markieren und je nach Anforderung eine zuvor durchgeführte Wärmebehandlung und/oder eine zerstörungsfreie Prüfung. Aus Platzgründen ist das warmgefertigte Rohr 16 kürzer dargestellt als es der Streckung entsprechen würde.After the drawing process by forging, the ready-to-use tube 16 is transported according to the arrow 15 into the finishing line in order to make it ready for shipment there. The finishing usually comprises a cutting to length, a visual inspection, a marking and, depending on requirements, a previously performed heat treatment and / or a non-destructive testing. For reasons of space, the hot-finished tube 16 is shown shorter than would correspond to the extension.
Beispielhaft wird entsprechend dem in Figur 1 dargestellten Arbeitsablauf aus einem Block 1 mit der Abmessung 406 mm rund und einer Länge von 2,8 m nach dem Lochen ein Hohlblock 8 der Abmessung 390 ä. D. x 123 mm Wd. mit einer Länge von 3,5 m erzeugt. Nach dem Schmieden weist das warmgefertigte Rohr 16 einen äußeren Durchmesser von 203 mm auf mit einer Wanddicke von 50 mm und einer Länge von 15 Meter.By way of example, in accordance with the workflow shown in FIG. 1, a hollow block 8 of dimensions 390 a. D. x 123 mm Wd is formed from a block 1 with a dimension of 406 mm round and a length of 2.8 m after punching. produced with a length of 3.5 m. After forging, the hot-made tube 16 has an outer diameter of 203 mm with a wall thickness of 50 mm and a length of 15 meters.
Figur 2 zeigt eine Variante des Verfahrens gemäß Figur 1, wobei für gleiche Teile gleiche Bezugszeichen gewählt worden sind. Der erste Umformschritt ist bis zur Erzeugung eines Hohlblockes 8 identisch mit dem bei Figur 1 erläuterten Umformschritt. Vor dem Streckprozess durch Schmieden, dem zweiten Umformschritt, ist jedoch noch ein Vorstreckaggregat, ein sogenannter Elongator 17, angeordnet. Auch der Elongator ist in diesem Ausführungsbeispiel als Schrägwalzwerk ausgebildet mit zwei Schrägwalzen 18, 18' und einem Innenwerkzeug, bestehend aus einem Stopfen 19, der mit einer Haltestange 20 verbunden ist.Figure 2 shows a variant of the method according to Figure 1, wherein the same reference numerals have been selected for the same parts. The first forming step is identical to the forming step illustrated in FIG. 1 until a hollow block 8 is produced. Before the stretching process by forging, the second forming step, however, a Vorstreckaggregat, a so-called Elongator 17, is arranged. Also, the Elongator is formed in this embodiment as a cross rolling mill with two inclined rollers 18, 18 'and an inner tool, consisting of a plug 19 which is connected to a support rod 20.
Der das Lochaggregat verlassende Hohlblock 8 wird über einen Quertransport 9 der Eingangsseite des Elongators 17 zugeführt. Durch das Schrägwalzen wird der Hohlblock 8 vorgestreckt und ein in der Wanddicke verringerter Hohlblock 8' erzeugt. Der Durchmesser des Hohlblockes 8' kann nach dem Vorstrecken gleich, kleiner oder größer sein.The hollow block 8 leaving the perforating unit is fed via a transverse transport 9 to the input side of the elongator 17. By the oblique rolling of the hollow block is the eighth pre-stretched and reduced in the wall thickness hollow block 8 'produced. The diameter of the hollow block 8 'may be equal to, smaller or larger after Vorstrecken.
Danach wird der Hohlblock 8' über einen Quertransport 9' der schon in Figur 1 erläuterten Schmiedemaschine 10 zugeführt. Da die nachfolgenden Schritte identisch sind erübrigt sich eine Wiederholung.Thereafter, the hollow block 8 'via a transverse transport 9' of the already explained in Figure 1 forging machine 10 is supplied. Since the following steps are identical, a repetition is unnecessary.
Beispielhaft wird entsprechend dem in Figur 2 dargestellten Arbeitsablauf aus einem Block 1 mit der Abmessung 500 mm rund und einer Länge von 4 m nach dem Lochen ein Hohlblock 8 der Abmessung 500 mm ä. D. x 180 mm Wd. mit einer Länge von 4,3 m erzeugt.By way of example, in accordance with the workflow shown in FIG. 2, a hollow block 8 measuring 500 mm in diameter is dimensioned 500 mm round and a length of 4 m after punching is dimensioned 500 mm. produced with a length of 4.3 m.
Nach Durchlaufen des Elongators liegt ein Hohlblock 8' mit den Abmessungen 480 mm ä. D. x 120 mm Wd. und 5,8 m Länge vor.After passing through the Elongators is a hollow block 8 'with the dimensions 480 mm ä. D. x 120 mm Wd. and 5.8 m in length.
Nach dem Streckprozess durch Schmieden weist das warmfertige Rohr 16 einen äußeren Durchmesser von 339,7 mm, eine Wanddicke von 75 mm und eine Länge von 12,6 m auf.After the forging process, the ready-to-use pipe 16 has an outer diameter of 339.7 mm, a wall thickness of 75 mm and a length of 12.6 m.
Figur 3 zeigt in einem Längsschnitt einen im Eingriff sich befindenden zu schmiedenden Hohlblock 8, der von links in die Schmiedemaschine einläuft und rechts als warmfertiges Rohr 16 die Schmiedemaschine verlässt. Im Schmiedebereich wirken auf der Außenseite in diesem Ausführungsbeispiel vier Schmiedebacken 21 , 21', 21", 21'" und auf der Innenseite ein zylindrischer Dorn 22 zusammen. Der Dorn 22 wird durch eine Haltestange 23 in Position gehalten, kann aber auch alternativ während des Schmiedeprozesses axial vor oder zurück bewegt werden.FIG. 3 shows, in a longitudinal section, a hollow block 8 to be forged, which engages from the left into the forging machine and leaves the forging machine on the right as a ready-to-use pipe 16. In the forging area on the outside in this embodiment, four forging jaws 21, 21 ', 21 ", 21'" and on the inside a cylindrical mandrel 22 together. The mandrel 22 is held in place by a support rod 23, but may alternatively be moved axially forward or backward during the forging process.
Der Drehpfeil 24 sowie der Axialpfeil 25 sollen verdeutlichen, dass während des Leerhubes der Schmiedebacken 21 - 21'" der Hohlblock 8 gedreht und axial weiter geschoben wird.The rotary arrow 24 and the axial arrow 25 are intended to illustrate that during the idle stroke of the forging jaws 21 - 21 '"of the hollow block 8 is rotated and pushed further axially.
Jede Schmiedebacke 21 - 21'" weist im Längsschnitt einen überwiegend konisch gestalteten Einlaufabschnitt 26 und einen daran sich anschließenden Glättteil 27 auf. Der Einlaufteil 26 kann auch leicht konvex gekrümmt sein.Each forging jaw 21-21 '"has in longitudinal section a predominantly conically shaped inlet section 26 and an adjoining smoothing section 27. The inlet section 26 can also be slightly convexly curved.
Im Querschnitt gesehen (Figur 4) weisen alle Schmiedebacken 21 - 21'" eine konkave Krümmung auf. Im Regelfall ist die Krümmung ein Kreisbogen, dessen Radius größer ist als der aktuelle Radius des zu schmiedenden Teiles. Die in den Figuren 3 und 4 eingezeichneten Bewegungspfeile 28 sollen den radialen Hub der jeweiligen Schmiedebacke 21 - 21"' verdeutlichen. 4), all the forging jaws 21-21 '' have a concave curvature, as a rule the curvature is a circular arc whose radius is greater than the actual radius of the part to be forged. The movement arrows 28 shown in FIGS. 3 and 4 are intended to illustrate the radial stroke of the respective forging jaw 21 - 21 "'.
BezugszeichenlisteLIST OF REFERENCE NUMBERS

Claims

Patentansprüche claims
1. Verfahren zum Herstellen eines nahtlos warmgefertigten Stahlrohres bei dem ausgehend von einem auf Umformtemperatur erwärmten Block in einem ersten Umformschritt durch Lochen ein dickwandiger Hohlblock erzeugt wird, der anschließend in gleicher Hitze in einem zweiten Umformschritt durch Walzen unter Veränderung des Durchmessers und der Wanddicke zum Vorrohr (Luppe) gestreckt und in einem dritten Umformschritt durch Reduzierwalzen daraus ein Fertig röhr erzeugt wird dadurch gekennzeichnet, dass der zweite und dritte durch Walzen gekennzeichnete Umformschritt ersetzt wird durch einen Umformschritt in Form eines Radialschmiedeprozesses unter Verwendung eines in den Hohlblock eingeschobenen Innenwerkzeuges und mindestens zwei auf die Mantelfläche des Hohlblockes einwirkender Schmiedebacken einer Schmiedemaschine, wobei der Hohlblock getaktet in der Phase des Leerhubes der Schmiedebacken gedreht und axial verschoben wird.1. A method for producing a seamless hot-finished steel tube in which, starting from a heated to forming temperature block in a first forming step by punching a thick-walled hollow block is generated, which then in the same heat in a second forming step by rolling while changing the diameter and the wall thickness to the front pipe (Luppe) stretched and produced in a third forming step by Reduzierwalzen a finished pipe is characterized in that the second and third characterized by rolling forming step is replaced by a forming step in the form of a radial forging process using an inserted into the hollow block inner tool and at least two the lateral surface of the hollow block acting forging jaws of a forging machine, wherein the hollow block clocked in the phase of the idle stroke of the forging jaws is rotated and moved axially.
2. Verfahren nach Anspruch 1 dadurch gekennzeichnet, dass die Drehung und der axiale Vorschub des Hohlblockes gleichzeitig oder zeitlich versetzt erfolgt.2. The method according to claim 1, characterized in that the rotation and the axial feed of the hollow block takes place simultaneously or offset in time.
3. Verfahren nach Anspruch 1 und 2 dadurch gekennzeichnet, dass vier Schmiedebacken verwendet werden, die in einer Ebene synchron auf die Mantelfläche des Hohlblockes einwirken.3. The method according to claim 1 and 2, characterized in that four forging jaws are used, which act in a plane synchronously on the lateral surface of the hollow block.
4. Verfahren nach den Ansprüchen 1 - 3 dadurch gekennzeichnet, dass das Innenwerkzeug während des Schmiedens steht.4. Process according to claims 1 - 3, characterized in that the inner tool is during forging.
5. Verfahren nach den Ansprüchen 1 - 3 dadurch gekennzeichnet, dass das Innenwerkzeug in gleicher Richtung wie der axiale Vorschub während des Schmiedens bewegt wird. 5. Process according to claims 1-3, characterized in that the inner tool is moved in the same direction as the axial feed during forging.
6. Verfahren nach den Ansprüchen 1 - 3 dadurch gekennzeichnet, dass das Innenwerkzeug entgegengesetzt dem axialen Vorschub während des Schmiedens bewegt wird.6. The method according to claims 1-3, characterized in that the inner tool is moved opposite to the axial feed during forging.
7. Verfahren nach einem der Ansprüche 1 - 6 dadurch gekennzeichnet, dass auf der Innenseite des Hohlblockes vor Beginn des Radialschmiedeprozesses ein Trenn- und Schmiermittel aufgebracht wird.7. The method according to any one of claims 1-6, characterized in that on the inside of the hollow block before the start of the radial forging process, a release agent and lubricant is applied.
8. Verfahren nach einem der Ansprüche 1 - 7 dadurch gekennzeichnet, dass der erste Umformschritt ein Lochpressen ist.8. The method according to any one of claims 1-7, characterized in that the first forming step is a hole pressing.
9. Verfahren nach Anspruch 8 dadurch gekennzeichnet, dass nach dem Lochpressen der Boden durchstoßen wird.9. The method according to claim 8, characterized in that pierced after the hole pressing the soil.
10. Verfahren nach Anspruch 8 dadurch gekennzeichnet, dass nach dem Lochpressen der Boden abgetrennt wird.10. The method according to claim 8, characterized in that after the hole pressing the soil is separated.
11. Verfahren nach den Ansprüchen 8 - 10 dadurch gekennzeichnet, dass nach dem Lochpressen und Beseitigen des Bodens der Hohlblock innen und außen entzundert wird.11. The method according to claims 8 - 10, characterized in that after the hole pressing and removing the bottom of the hollow block is descaled inside and outside.
12. Verfahren nach Anspruch 8 dadurch gekennzeichnet, dass nach dem Lochpressen ein Vorstrecken mittels Schrägwalzen erfolgt.12. The method according to claim 8, characterized in that after the hole pressing a pre-stretching by means of oblique rolls.
13. Verfahren nach Anspruch 12 dadurch gekennzeichnet, dass nach dem Schrägwalzen der Hohlblock innen entzundert wird. 13. The method according to claim 12, characterized in that after the oblique rolling of the hollow block is descaled inside.
14. Verfahren nach einem der Ansprüche 1 - 7 dadurch gekennzeichnet, dass der erste Umformschritt ein Lochen mittels Schrägwalzen ist.14. The method according to any one of claims 1-7, characterized in that the first forming step is a punching by means of oblique rolling.
15. Verfahren nach Anspruch 14 dadurch gekennzeichnet, dass nach dem Lochen ein Vorstrecken mittels Schrägwalzen erfolgt.15. The method according to claim 14, characterized in that after punching a pre-stretching by means of oblique rolls.
16. Verfahren nach den Ansprüche 14 und 15 dadurch gekennzeichnet, dass der erzeugte Hohlblock innen entzundert wird.16. The method according to claims 14 and 15, characterized in that the hollow block produced is descaled inside.
17. Verfahren nach einem der Ansprüche 1 - 16 dadurch gekennzeichnet, dass das Fertigrohr einer Wärmebehandlung unterzogen wird.17. The method according to any one of claims 1-16, characterized in that the finished tube is subjected to a heat treatment.
18. Verfahren nach einem der Ansprüche 1 - 17 dadurch gekennzeichnet, dass das Fertigrohr gerichtet wird.18. The method according to any one of claims 1-17, characterized in that the finished tube is directed.
19. Verfahren nach einem der Ansprüche 1 - 18 dadurch gekennzeichnet, dass die Außenoberfläche des Fertigrohres spanabhebend bearbeitet wird.19. The method according to any one of claims 1-18, characterized in that the outer surface of the finished pipe is machined.
20. Verfahren nach Anspruch 19 dadurch gekennzeichnet, dass die Bearbeitung ein Schleifen ist.20. The method according to claim 19, characterized in that the processing is a grinding.
21. Einrichtung zur Durchführung des Verfahrens nach Anspruch 1 mit einer Radialschmiedemaschine, bestehend aus einem Schmiedeständer und mindestens zwei darin auswechselbar angeordneten Schmiedebacken und einem Manipulator sowie einem in den Schmiedeständer hinein ragenden axial verfahrbaren Dorn, dadurch gekennzeichnet, dass auf der Einlauf- wie auch auf der Auslaufseite je ein Manipulator (12, 13) angeordnet ist und mindestens die Auslaufseite eine Führung aufweist. 21. A device for carrying out the method according to claim 1 with a radial forging machine, consisting of a forging and at least two replaceable arranged therein forging jaws and a manipulator and a protruding into the forging rack axially movable mandrel, characterized in that on the inlet as well as on the outlet side each a manipulator (12, 13) is arranged and at least the outlet side has a guide.
22. Einrichtung nach Anspruch 21 dadurch gekennzeichnet, dass die Führung zwischen Manipulator (12) und Schmiedeständer (14) angeordnet ist.22. Device according to claim 21, characterized in that the guide between the manipulator (12) and forging stand (14) is arranged.
23. Einrichtung nach Anspruch 21 und 22 dadurch gekennzeichnet, dass im Längsschnitt gesehen jede Schmiedebacke (21 - 21"') auf der dem Werkstück zugewandten Seite einen sich verengenden Einlaufabschnitt (26) mit einem daran anschließenden ebenen Glättteil (27) aufweist und im Querschnitt gesehen die Schmiedebacke (21 - 21'") eine konkave Krümmung aufweist, wobei der Radius in der jeweiligen Querschnittsebene immer größer ist als der aktuelle Radius des sich im Eingriff befindlichen Hohlblockes (8, 8').23. Device according to claim 21 and 22, characterized in that viewed in longitudinal section each forging jaw (21 - 21 "') on the workpiece side facing a narrowing inlet section (26) with an adjoining flat smoothing part (27) and in cross section seen the forging jaw (21 - 21 '") has a concave curvature, wherein the radius in the respective cross-sectional plane is always greater than the current radius of the engaged hollow block (8, 8').
24. Einrichtung nach einem der Ansprüche 21 - 23 dadurch gekennzeichnet, dass der Dorn (22) zylindrisch ist.24. Device according to one of claims 21 - 23, characterized in that the mandrel (22) is cylindrical.
25. Einrichtung nach einem der Ansprüche 21 - 23 dadurch gekennzeichnet, dass der Dorn konisch ist.25. Device according to one of claims 21 - 23, characterized in that the mandrel is conical.
26. Einrichtung nach einem der Ansprüche 21 - 23 dadurch gekennzeichnet, dass der Dorn abgestuft ist26. Device according to one of claims 21 - 23, characterized in that the mandrel is stepped
27. Einrichtung nach einem der Ansprüche 21 - 26 dadurch gekennzeichnet, dass auch die Einfaufseite eine Führung aufweist. 27. Device according to one of claims 21 - 26, characterized in that the insertion side has a guide.
EP05803680A 2004-10-25 2005-10-25 Method for production of a seamless hot-finished steel tube Active EP1814679B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
PL05803680T PL1814679T3 (en) 2004-10-25 2005-10-25 Method for production of a seamless hot-finished steel tube

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE102004052406 2004-10-25
DE102005052178A DE102005052178B4 (en) 2004-10-25 2005-10-24 Method for producing a seamless hot-worked steel tube
PCT/DE2005/001944 WO2006045301A1 (en) 2004-10-25 2005-10-25 Method for production of a seamless hot-finished steel tube and device for carrying out said method

Publications (2)

Publication Number Publication Date
EP1814679A1 true EP1814679A1 (en) 2007-08-08
EP1814679B1 EP1814679B1 (en) 2009-02-18

Family

ID=36129190

Family Applications (1)

Application Number Title Priority Date Filing Date
EP05803680A Active EP1814679B1 (en) 2004-10-25 2005-10-25 Method for production of a seamless hot-finished steel tube

Country Status (16)

Country Link
US (1) US8166792B2 (en)
EP (1) EP1814679B1 (en)
JP (1) JP4633122B2 (en)
KR (1) KR20070084387A (en)
AT (1) ATE422978T1 (en)
AU (1) AU2005299151B2 (en)
BR (1) BRPI0516769B1 (en)
CA (1) CA2584461C (en)
DE (2) DE102005052178B4 (en)
EA (1) EA009851B1 (en)
ES (1) ES2321121T3 (en)
HR (1) HRP20090227T1 (en)
MX (1) MX2007004965A (en)
PL (1) PL1814679T3 (en)
RS (1) RS50967B (en)
WO (1) WO2006045301A1 (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102011109071A1 (en) 2011-07-30 2013-01-31 Sms Meer Gmbh Pipe Forging Process with Urformed Hollow Block
WO2017182361A1 (en) 2016-04-18 2017-10-26 Metalvalue Sas Seamless metal tubes

Families Citing this family (27)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102007032804B3 (en) * 2007-07-10 2008-09-04 V&M Deutschland Gmbh Forging mandrel for hot-forging of tubular work-pieces made of metal has a mandrel body made from heat-resistant material and a mandrel rod
DE102008039454B4 (en) * 2008-08-25 2011-01-27 Sms Meer Gmbh Method for producing a seamless steel tube and rolling mill for carrying out the method
DE102009053166B4 (en) 2009-11-02 2015-02-19 V & M Deutschland Gmbh Method and device for optimized rod circulation in the production of a seamlessly hot-made steel tube after the continuous tube process
AT509642B1 (en) * 2010-03-29 2013-03-15 Gfm Gmbh METHOD FOR THE PRODUCTION OF WHEEL AXES, ESPECIALLY FOR RAILWAY CARTS
CN101985132B (en) * 2010-10-15 2013-06-26 中冶东方工程技术有限公司 Method for producing thermally tandem-rolled seamless steel pipes
AT511748B1 (en) * 2011-08-12 2014-04-15 Gfm Gmbh DEVICE FOR FORGING A HOLLOW BODY
RU2504451C2 (en) * 2011-12-12 2014-01-20 Федеральное государственное автономное образовательное учреждение высшего профессионального образования "Уральский федеральный университет имени первого Президена России Б.Н. Ельцина" Hammer of radial forging machine
DE102012107041B4 (en) * 2012-08-01 2014-05-15 Benteler Deutschland Gmbh Method and device for producing a metallic hollow block from a metallic block
US9365008B1 (en) * 2012-09-28 2016-06-14 Michael Kenneth Walker Actuating device
RU2539799C2 (en) * 2012-12-14 2015-01-27 Дмитрий Валериевич Гречихин Production of thin-wall pipes of higher precision from alloyed copper-based strain-hardened alloys
ITMI20130628A1 (en) 2013-04-17 2014-10-18 Danieli Off Mecc INTEGRATED MILL FOR TUBES WITHOUT TRANSVERSAL LAMINATION
KR101506918B1 (en) * 2013-08-29 2015-03-31 주식회사 태웅 Apparatus for forming hollow shaft
DE102013219310A1 (en) 2013-09-25 2015-03-26 Gfm Gmbh Process for hot forging a seamless hollow body made of material that is difficult to form, in particular of steel
RU2607108C1 (en) * 2015-09-08 2017-01-10 Общество с ограниченной ответственностью Научно-производственное предприятие "МЕТЧИВ" (ООО НПП "МЕТЧИВ") Method of radial forging hexagonal hollow profiles
RU2632752C2 (en) * 2016-04-04 2017-10-09 Григорий Иванович Коваль Technological line of radial forging
WO2018083028A1 (en) 2016-11-02 2018-05-11 Salzgitter Flachstahl Gmbh Seamless tube of a medium manganese steel and method for the production thereof
FR3077016B1 (en) 2018-01-22 2021-10-01 Aubert & Duval Sa METHOD OF MANUFACTURING A HOLLOW PART FROM A METAL MATERIAL AND USE OF THIS PROCESS TO MANUFACTURE A ROD OR A LANDING GEAR ROD
CN109604369A (en) * 2018-09-14 2019-04-12 山东庆云三友机械电器有限公司 Precision seamless steel tubes production technology
CN110091138A (en) * 2019-06-18 2019-08-06 常熟希那基汽车零件有限公司 A kind of novel hollow production method of shaft
CN110732614B (en) * 2019-10-08 2021-07-20 淮南东华欧科矿山支护设备有限责任公司 Method for processing special-shaped thread hollow grouting anchor rod body
CN111744984A (en) * 2020-06-18 2020-10-09 宁夏东方钽业股份有限公司 Preparation method of tantalum alloy and niobium alloy tube blank
CN112775370B (en) * 2020-12-26 2023-05-23 江苏宇钛新材料有限公司 Short-process preparation method for titanium and titanium alloy pipe
RU2762225C1 (en) * 2021-04-13 2021-12-16 Публичное акционерное общество "Тяжпрессмаш" Method for manufacturing blanks of seamless cylindrical bodies of solid-fuel gas generators
CN114178452B (en) * 2021-12-08 2022-09-02 四川大学 Seamless steel tube radial forging equipment and forging method thereof
CN114833296B (en) * 2022-05-25 2023-07-25 江苏明越精密高温合金有限公司 Blank making equipment for tube blank
CN116810407B (en) * 2023-08-30 2023-11-17 太原科技大学 Long-size metal coil pipe coping finishing production system
CN117583486A (en) * 2024-01-19 2024-02-23 江苏国强兴晟能源科技股份有限公司 Self-adaptive anti-offset necking machine for octal pipe necking

Family Cites Families (21)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1497467A (en) * 1921-06-20 1924-06-10 Jr Andrew J Aiken Apparatus for producing seamless tubes
GB873988A (en) 1958-01-06 1961-08-02 Appel Process Ltd Improvements in or relating to the cold-forming of metal workpieces
US3036696A (en) * 1959-02-24 1962-05-29 Reisholz Stahl & Roehrenwerk Method of producing seamless tubular articles
DE1906961A1 (en) 1969-02-07 1971-06-16 Mannesmann Ag Process for the production of seamless tubes from hollow bodies produced by continuous casting
AT322329B (en) * 1973-12-04 1975-05-12 Gfm Fertigungstechnik FORGING MACHINES FOR PRODUCING IN PARTICULAR SCRAP BARRELS
US4190887A (en) * 1975-08-22 1980-02-26 Nippon Steel Corporation Press roll piercing method
AT346156B (en) * 1977-04-01 1978-10-25 Gfm Fertigungstechnik FORGING MACHINE FOR FORGING LARGE PIPES OVER A LONG THORN
US4578974A (en) * 1983-08-02 1986-04-01 Aetna-Standard Engineering Company Seamless tube mill
JPS62197237A (en) 1986-02-21 1987-08-31 Nippon Steel Corp Manufacture of seamless steel pipe
JPS6440134A (en) * 1987-08-05 1989-02-10 Nippon Steel Corp Hollow pipe forging method
US4899570A (en) * 1988-04-05 1990-02-13 Teledyne Industries, Inc. Apparatus and method of rotary forging with induction heating
SU1634355A1 (en) 1989-02-01 1991-03-15 Уральский политехнический институт им.С.М.Кирова A method for forging hollow blanks
RU2000160C1 (en) 1992-06-04 1993-09-07 Московский институт стали и сплавов Blanks with elongated axis radial reduction method
DE19523280C2 (en) * 1995-06-27 2002-12-05 Gfm Gmbh Steyr Forging machine for internal profiling of tubular workpieces
DE19532244C2 (en) * 1995-09-01 1998-07-02 Peak Werkstoff Gmbh Process for the production of thin-walled tubes (I)
JP3855300B2 (en) * 1996-04-19 2006-12-06 住友金属工業株式会社 Manufacturing method and equipment for seamless steel pipe
DE19709997C1 (en) * 1997-03-12 1998-07-23 Hmp Engineering Gmbh Hammer forge for reducing thickness of tubular workpiece
DE29918120U1 (en) * 1999-10-14 2000-01-20 Gfm Beteiligungs Und Managemen Forming tool
US6799357B2 (en) * 2001-09-20 2004-10-05 Memry Corporation Manufacture of metal tubes
DE10341716B4 (en) * 2003-03-25 2009-12-24 Forschungsgesellschaft Umformtechnik Mbh Device for the radial forming of rod, tube or wire-shaped workpieces
DE10333507B3 (en) * 2003-07-18 2004-09-23 V&M Deutschland Gmbh Process to manufacture a seamless steel pipe by punching hot metal block with a mandrel followed by passage through inclined nip mill

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See references of WO2006045301A1 *

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102011109071A1 (en) 2011-07-30 2013-01-31 Sms Meer Gmbh Pipe Forging Process with Urformed Hollow Block
EP2554293A1 (en) 2011-07-30 2013-02-06 SMS Meer GmbH Pipe forging method with cast hollow block
WO2017182361A1 (en) 2016-04-18 2017-10-26 Metalvalue Sas Seamless metal tubes

Also Published As

Publication number Publication date
AU2005299151A1 (en) 2006-05-04
JP4633122B2 (en) 2011-02-16
EA009851B1 (en) 2008-04-28
ATE422978T1 (en) 2009-03-15
MX2007004965A (en) 2007-06-14
CA2584461A1 (en) 2006-05-04
US20090044883A1 (en) 2009-02-19
EP1814679B1 (en) 2009-02-18
AU2005299151B2 (en) 2011-08-25
US8166792B2 (en) 2012-05-01
DE102005052178A1 (en) 2006-04-27
WO2006045301A1 (en) 2006-05-04
PL1814679T3 (en) 2009-07-31
HRP20090227T1 (en) 2009-05-31
DE502005006668D1 (en) 2009-04-02
JP2008517766A (en) 2008-05-29
RS50967B (en) 2010-10-31
BRPI0516769A8 (en) 2016-11-08
BRPI0516769B1 (en) 2018-10-30
CA2584461C (en) 2013-09-17
BRPI0516769A (en) 2008-09-23
EA200700945A1 (en) 2007-10-26
ES2321121T3 (en) 2009-06-02
KR20070084387A (en) 2007-08-24
DE102005052178B4 (en) 2008-06-19

Similar Documents

Publication Publication Date Title
DE102005052178B4 (en) Method for producing a seamless hot-worked steel tube
EP3049200B1 (en) Method for the hot forging of a seamless hollow body of material that is difficult to form
DE102012007379B4 (en) Process for the cross rolling of cylindrical products
DE602004011184T2 (en) SEAMLESS STEEL TUBE FOR A DRIVE SHAFT AND METHOD FOR THE PRODUCTION THEREOF
WO2008022715A1 (en) Device and method for producing a hollow body from a workpiece in the form of a round blank
DE69931985T2 (en) Process for making a seamless pipe
EP1253984B1 (en) Method and a press cylinder device for producing a hollow body
DE102007041149B3 (en) Method and device for cross rolling stepped hollow shafts or cylindrical hollow parts from a tube
DE3129903A1 (en) METHOD AND DEVICE FOR THE PRODUCTION OF TUBES WITH SECTIONAL CHANGING EXTERNAL AND INTERNAL DIAMETERS
ZA200703246B (en) Method for production of a seamless hot-finished steel tube and device for carrying out said method
DE4313648A1 (en) Process and apparatus for the production of seamless tubes by pressure-rolling
DE2848990C2 (en) Method and device for the production of tubular blanks
DE1427915A1 (en) Method and device for manufacturing seamless tubes
WO2008003305A1 (en) Method for the production of a rotationally symmetrical part, and part produced according to said method
DE10236757B4 (en) Process for producing a hollow block of metallic material
DE2657823C3 (en) Rolling mill for the production of seamless tubes
DE102006001064B4 (en) Process for making a seamless pipe
DE10311144B3 (en) Method for producing a tube with an internal profile and device for carrying out the method
DE102008056988A1 (en) Seamless steel pipe producing method for rolling mill, involves providing inner tool in interior of pipe blank, where rotation movement opposite to rotary movement of pipe blank is imposed to piercer
DE19725314C1 (en) Skew-rolling mill for elongation of seamless hollow blank heated to forming temperature
EP1498193A1 (en) Method and device for fabricating seamless tubes
DE3536046C2 (en)
DE102004059091A1 (en) Production of a hot-rolled seamless pipe made from steel used in oil and gas conveying comprises forming a larger wall thickness than the remaining tubular body on the pipe ends and mechanically processing the inner periphery
EP2067542A1 (en) Method and rolling mill to produce wireless steel pipes
DE2715847C2 (en) Calibration for a piercing mill

Legal Events

Date Code Title Description
PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

17P Request for examination filed

Effective date: 20070412

AK Designated contracting states

Kind code of ref document: A1

Designated state(s): AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IS IT LI LT LU LV MC NL PL PT RO SE SI SK TR

AX Request for extension of the european patent

Extension state: HR YU

RIN1 Information on inventor provided before grant (corrected)

Inventor name: PRASSER, CHRISTOPH

Inventor name: KOPPENSTEINER, ROBERT

Inventor name: LEFEBVRE, PIERRE

Inventor name: KUEMMERLING, ROLF

Inventor name: WIEDENMAIER, STEFAN

Inventor name: WIESER, RUPERT

17Q First examination report despatched

Effective date: 20071113

RAX Requested extension states of the european patent have changed

Extension state: YU

Payment date: 20070412

Extension state: HR

Payment date: 20070412

GRAP Despatch of communication of intention to grant a patent

Free format text: ORIGINAL CODE: EPIDOSNIGR1

RTI1 Title (correction)

Free format text: METHOD FOR PRODUCTION OF A SEAMLESS HOT-FINISHED STEEL TUBE

GRAS Grant fee paid

Free format text: ORIGINAL CODE: EPIDOSNIGR3

GRAA (expected) grant

Free format text: ORIGINAL CODE: 0009210

AK Designated contracting states

Kind code of ref document: B1

Designated state(s): AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IS IT LI LT LU LV MC NL PL PT RO SE SI SK TR

AX Request for extension of the european patent

Extension state: HR YU

REG Reference to a national code

Ref country code: GB

Ref legal event code: FG4D

Free format text: NOT ENGLISH

REG Reference to a national code

Ref country code: CH

Ref legal event code: EP

REG Reference to a national code

Ref country code: IE

Ref legal event code: FG4D

Free format text: LANGUAGE OF EP DOCUMENT: GERMAN

REG Reference to a national code

Ref country code: RO

Ref legal event code: EPE

REF Corresponds to:

Ref document number: 502005006668

Country of ref document: DE

Date of ref document: 20090402

Kind code of ref document: P

REG Reference to a national code

Ref country code: HR

Ref legal event code: TUEP

Ref document number: P20090227

Country of ref document: HR

REG Reference to a national code

Ref country code: HR

Ref legal event code: T1PR

Ref document number: P20090227

Country of ref document: HR

REG Reference to a national code

Ref country code: ES

Ref legal event code: FG2A

Ref document number: 2321121

Country of ref document: ES

Kind code of ref document: T3

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: SI

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20090218

Ref country code: NL

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20090218

Ref country code: FI

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20090218

Ref country code: LT

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20090218

REG Reference to a national code

Ref country code: PL

Ref legal event code: T3

NLV1 Nl: lapsed or annulled due to failure to fulfill the requirements of art. 29p and 29m of the patents act
PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: LV

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20090218

Ref country code: SE

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20090518

Ref country code: IS

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20090618

REG Reference to a national code

Ref country code: IE

Ref legal event code: FD4D

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: IE

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20090218

Ref country code: EE

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20090218

Ref country code: PT

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20090727

Ref country code: DK

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20090218

PLBE No opposition filed within time limit

Free format text: ORIGINAL CODE: 0009261

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: NO OPPOSITION FILED WITHIN TIME LIMIT

26N No opposition filed

Effective date: 20091119

BERE Be: lapsed

Owner name: V & M DEUTSCHLAND G.M.B.H.

Effective date: 20091031

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: MC

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20091031

REG Reference to a national code

Ref country code: CH

Ref legal event code: PL

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: BE

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20091031

Ref country code: GR

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20090519

Ref country code: LI

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20091031

Ref country code: CH

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20091031

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: LU

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20091025

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: HU

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20090819

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: CY

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20090218

REG Reference to a national code

Ref country code: HR

Ref legal event code: ODRP

Ref document number: P20090227

Country of ref document: HR

Payment date: 20141002

Year of fee payment: 11

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: BG

Payment date: 20141013

Year of fee payment: 10

Ref country code: GB

Payment date: 20141021

Year of fee payment: 10

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: TR

Payment date: 20131025

Year of fee payment: 9

REG Reference to a national code

Ref country code: FR

Ref legal event code: PLFP

Year of fee payment: 11

GBPC Gb: european patent ceased through non-payment of renewal fee

Effective date: 20151025

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: GB

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20151025

REG Reference to a national code

Ref country code: FR

Ref legal event code: PLFP

Year of fee payment: 12

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: BG

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20160630

REG Reference to a national code

Ref country code: HR

Ref legal event code: PBON

Ref document number: P20090227

Country of ref document: HR

Effective date: 20161025

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: TR

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20151025

REG Reference to a national code

Ref country code: FR

Ref legal event code: PLFP

Year of fee payment: 13

REG Reference to a national code

Ref country code: FR

Ref legal event code: PLFP

Year of fee payment: 14

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: CZ

Payment date: 20210929

Year of fee payment: 17

Ref country code: FR

Payment date: 20210922

Year of fee payment: 17

Ref country code: IT

Payment date: 20210922

Year of fee payment: 17

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: PL

Payment date: 20210923

Year of fee payment: 17

Ref country code: SK

Payment date: 20210928

Year of fee payment: 17

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: RO

Payment date: 20211021

Year of fee payment: 17

Ref country code: DE

Payment date: 20210921

Year of fee payment: 17

Ref country code: AT

Payment date: 20210923

Year of fee payment: 17

Ref country code: ES

Payment date: 20211102

Year of fee payment: 17

REG Reference to a national code

Ref country code: DE

Ref legal event code: R119

Ref document number: 502005006668

Country of ref document: DE

REG Reference to a national code

Ref country code: SK

Ref legal event code: MM4A

Ref document number: E 5350

Country of ref document: SK

Effective date: 20221025

REG Reference to a national code

Ref country code: AT

Ref legal event code: MM01

Ref document number: 422978

Country of ref document: AT

Kind code of ref document: T

Effective date: 20221025

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: RO

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20221025

Ref country code: FR

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20221031

Ref country code: DE

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20230503

Ref country code: CZ

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20221025

Ref country code: AT

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20221025

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: SK

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20221025

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: IT

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20221025

REG Reference to a national code

Ref country code: ES

Ref legal event code: FD2A

Effective date: 20231201

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: ES

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20221026

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: ES

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20221026

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: PL

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20221025