EP1814679B1 - Procede pour produire un tube d'acier sans soudure usine a chaud - Google Patents

Procede pour produire un tube d'acier sans soudure usine a chaud Download PDF

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Publication number
EP1814679B1
EP1814679B1 EP05803680A EP05803680A EP1814679B1 EP 1814679 B1 EP1814679 B1 EP 1814679B1 EP 05803680 A EP05803680 A EP 05803680A EP 05803680 A EP05803680 A EP 05803680A EP 1814679 B1 EP1814679 B1 EP 1814679B1
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EP
European Patent Office
Prior art keywords
forging
hollow block
rolling
punching
shaping step
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.)
Active
Application number
EP05803680A
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German (de)
English (en)
Other versions
EP1814679A1 (fr
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/pl
Publication of EP1814679A1 publication Critical patent/EP1814679A1/fr
Application granted granted Critical
Publication of EP1814679B1 publication Critical patent/EP1814679B1/fr
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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
    • 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
    • B21B19/06—Rolling hollow basic material, e.g. Assel 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
    • 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
    • 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

Definitions

  • the invention relates to a method for producing a seamlessly hot-finished steel tube according to the preamble of claim 1.
  • the DE 1 906 961 A1 discloses a method for producing seamless tubes from continuously cast hollow bodies.
  • the cast strand is divided and the respective section is pre-stretched with the aid of an inner tool and hot forging. Thereafter, the prestretched portion is rolled on a continuous rolling mill to a pre-pipe (Luppe) and subsequently producing a finished tube by subsequent stretch reduction.
  • 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 thicknesses 3 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 forming step characterized by rolling 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 acting on the lateral surface of the hollow block 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 axially displaced.
  • 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. Another advantage is the fact that in most cases can be dispensed with the otherwise necessary downstream sizing mill, since after the drawing process by forging so produced ready-to-use pipe 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 synchronously in a plane on the lateral surface of the hollow block.
  • a total of four forging jaws are used, which act synchronously in a plane on the lateral surface of the hollow block.
  • 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. 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.
  • the starting block to be used is either a section of a continuous casting rod, preferably a round-strand casting rod or ingot. Depending on the hole process used, a pre-deformation of the material can be difficult to form Continuous casting by rolling or forging may be required.
  • the heating of the output block is carried out in a known manner in a rotary hearth or in a walking beam furnace. At high weights, other heating furnaces, such. B. Tieföfen conceivable.
  • FIG. 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 a deformation temperature, eg. B. 1250 ° C, heated. After heating and leaving the rotary hearth furnace 2, the heated block is fed via a roller table 3 a punching unit.
  • a deformation temperature eg. B. 1250 ° C
  • 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.
  • 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 following 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 mit step method with downstream reduction rolls.
  • the hollow block 8 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.
  • 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.
  • 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 FIG. 1 , wherein like reference numerals have been selected for like parts.
  • the first forming step is identical to that until the production of a hollow block 8 FIG. 1 explained forming step.
  • 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 8 is 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.
  • FIG. 2 illustrated workflow of a block 1 with the dimension 500 mm round and a length of 4 m after punching a hollow block 8 of the dimension 500 mm a remplierer diameter x 180 mm wall thickness 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 outer diameter x 120 mm wall thickness and 5.8 m length before.
  • 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 an engaged to be forged hollow block 8, which runs from the left into the forging machine and right as a ready-to-use pipe 16 leaves the forging machine.
  • four forged jaws 21, 21 ' act on the outside in this exemplary embodiment.
  • 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 "'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.

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

Claims (20)

  1. Procédé destiné à la fabrication d'un tube en acier sans soudure fabriqué à chaud dans lequel, à partir d'un lingot chauffé à la température de déformation, on produit dans une première phase de déformation par perçage un lingot creux à paroi épaisse qui est ensuite, à la même température, dans une deuxième phase de déformation, étiré par laminage avec modification du diamètre et de l'épaisseur de paroi pour former le tube préliminaire (ébauche de tube), et dans lequel, à partir de celui-ci, on produit un tube fini dans une troisième phase de déformation par laminage réducteur
    caractérisé en ce que la deuxième et la troisième phases de déformation caractérisées par le laminage sont remplacées par une phase de déformation sous la forme d'un procédé de forgeage radial utilisant un outil intérieur introduit dans le lingot creux et au moins deux mâchoires de forgeage d'une machine à forger agissant sur la surface d'enveloppe du lingot creux, le lingot creux étant tourné et avancé dans le sens axial de manière synchronisée au cours de la phase de course à vide des mâchoires de forgeage.
  2. Procédé selon la revendication 1,
    caractérisé en ce que la rotation et l'avancée axiale du lingot creux ont lieu simultanément ou de manière décalée dans le temps.
  3. Procédé selon les revendications 1 et 2,
    caractérisé en ce qu'on utilise quatre mâchoires de forgeage qui agissent dans un plan de manière synchronisée sur la surface d'enveloppe du lingot creux.
  4. Procédé selon les revendications 1 à 3,
    caractérisé en ce que l'outil intérieur est immobile pendant le forgeage.
  5. Procédé selon les revendications 1 à 3,
    caractérisé en ce que l'outil intérieur est déplacé dans le même sens que l'avancée axiale pendant le forgeage.
  6. Procédé selon les revendications 1 à 3,
    caractérisé en ce que l'outil intérieur est déplacé à l'inverse de l'avancée axiale pendant le forgeage.
  7. Procédé selon l'une des revendications 1 à 6,
    caractérisé en ce que, avant le début du processus de forgeage radial, un agent de démoulage et de lubrification est appliqué sur la face intérieure du lingot creux.
  8. Procédé selon l'une des revendications 1 à 7,
    caractérisé en ce que la première phase de déformation est un poinçonnage.
  9. Procédé selon la revendication 8,
    caractérisé en ce que, après le poinçonnage, le fond est percé.
  10. Procédé selon la revendication 8,
    caractérisé en ce que, après le perçage, le fond est sectionné.
  11. Procédé selon les revendications 8 à 10,
    caractérisé en ce que, après le poinçonnage et l'élimination du fond, le lingot creux est décalaminé à l'intérieur et à l'extérieur.
  12. Procédé selon la revendication 8,
    caractérisé en ce que, après le poinçonnage, un étirage préliminaire a lieu par laminage perçage.
  13. Procédé selon la revendication 12,
    caractérisé en ce que, après le laminage perçage, le lingot creux est décalaminé à l'intérieur.
  14. Procédé selon l'une des revendications 1 à 7,
    caractérisé en ce que la première phase de déformation est un perçage par laminage perçage.
  15. Procédé selon la revendication 14,
    caractérisé en ce que, après le perçage, un étirage préliminaire a lieu par laminage perçage.
  16. Procédé selon les revendications 14 et 15,
    caractérisé en ce que le lingot creux produit est décalaminé à l'intérieur.
  17. Procédé selon l'une des revendications 1 à 16,
    caractérisé en ce que le tube fini est soumis à un traitement thermique.
  18. Procédé selon l'une des revendications 1 à 17,
    caractérisé en ce que le tube fini est dressé.
  19. Procédé selon l'une des revendications 1 à 18,
    caractérisé en ce que la surface extérieure du tube fini est usinée par enlèvement de copeaux.
  20. Procédé selon la revendication 19,
    caractérisé en ce que l'usinage est une rectification.
EP05803680A 2004-10-25 2005-10-25 Procede pour produire un tube d'acier sans soudure usine a chaud Active EP1814679B1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
PL05803680T PL1814679T3 (pl) 2004-10-25 2005-10-25 Sposób wytwarzania rury stalowej bez szwu, wykańczanej na gorąco

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE102004052406 2004-10-25
DE102005052178A DE102005052178B4 (de) 2004-10-25 2005-10-24 Verfahren zum Herstellen eines nahtlos warmgefertigten Stahlrohres
PCT/DE2005/001944 WO2006045301A1 (fr) 2004-10-25 2005-10-25 Procede pour produire un tube d'acier sans soudure usine a chaud et dispositif pour realiser le procede

Publications (2)

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

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EP05803680A Active EP1814679B1 (fr) 2004-10-25 2005-10-25 Procede pour produire un tube d'acier sans soudure usine a chaud

Country Status (16)

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

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RU2607108C1 (ru) * 2015-09-08 2017-01-10 Общество с ограниченной ответственностью Научно-производственное предприятие "МЕТЧИВ" (ООО НПП "МЕТЧИВ") Способ радиальной ковки шестигранных полых профилей
WO2019141798A1 (fr) 2018-01-22 2019-07-25 Aubert & Duval Procédé de fabrication d'une pièce creuse en un matériau métallique et utilisation de ce procédé pour fabriquer une tige ou un balancier de train d'atterrissage
CN110732614A (zh) * 2019-10-08 2020-01-31 淮南东华欧科矿山支护设备有限责任公司 一种异型螺纹中空注浆锚杆杆体加工方法

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WO2018083029A1 (fr) 2016-11-02 2018-05-11 Salzgitter Flachstahl Gmbh Tube fabriqué sans soudure et réalisé par formage à basse température en acier au manganèse moyen et procédé de fabrication
CN109604369A (zh) * 2018-09-14 2019-04-12 山东庆云三友机械电器有限公司 精密无缝钢管生产工艺
CN110091138A (zh) * 2019-06-18 2019-08-06 常熟希那基汽车零件有限公司 一种新型空心轴制造方法
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CN117583486A (zh) * 2024-01-19 2024-02-23 江苏国强兴晟能源科技股份有限公司 一种用于八角管缩口的自适应防偏移缩口机

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RU2607108C1 (ru) * 2015-09-08 2017-01-10 Общество с ограниченной ответственностью Научно-производственное предприятие "МЕТЧИВ" (ООО НПП "МЕТЧИВ") Способ радиальной ковки шестигранных полых профилей
WO2019141798A1 (fr) 2018-01-22 2019-07-25 Aubert & Duval Procédé de fabrication d'une pièce creuse en un matériau métallique et utilisation de ce procédé pour fabriquer une tige ou un balancier de train d'atterrissage
CN110732614A (zh) * 2019-10-08 2020-01-31 淮南东华欧科矿山支护设备有限责任公司 一种异型螺纹中空注浆锚杆杆体加工方法

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JP2008517766A (ja) 2008-05-29
EA009851B1 (ru) 2008-04-28
DE102005052178B4 (de) 2008-06-19
HRP20090227T1 (en) 2009-05-31
US20090044883A1 (en) 2009-02-19
ATE422978T1 (de) 2009-03-15
BRPI0516769B1 (pt) 2018-10-30
DE102005052178A1 (de) 2006-04-27
BRPI0516769A8 (pt) 2016-11-08
DE502005006668D1 (de) 2009-04-02
BRPI0516769A (pt) 2008-09-23
KR20070084387A (ko) 2007-08-24
WO2006045301A1 (fr) 2006-05-04
CA2584461A1 (fr) 2006-05-04
EP1814679A1 (fr) 2007-08-08
AU2005299151A1 (en) 2006-05-04
RS50967B (sr) 2010-10-31
ES2321121T3 (es) 2009-06-02
US8166792B2 (en) 2012-05-01
EA200700945A1 (ru) 2007-10-26
AU2005299151B2 (en) 2011-08-25
MX2007004965A (es) 2007-06-14
JP4633122B2 (ja) 2011-02-16
CA2584461C (fr) 2013-09-17
PL1814679T3 (pl) 2009-07-31

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