EP2170540B1 - Verfahren zur herstellung von warmgefertigten nahtlosen rohren mit optimierten ermüdungseigenschaften im verschweissten zustand - Google Patents

Verfahren zur herstellung von warmgefertigten nahtlosen rohren mit optimierten ermüdungseigenschaften im verschweissten zustand Download PDF

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Publication number
EP2170540B1
EP2170540B1 EP08773277A EP08773277A EP2170540B1 EP 2170540 B1 EP2170540 B1 EP 2170540B1 EP 08773277 A EP08773277 A EP 08773277A EP 08773277 A EP08773277 A EP 08773277A EP 2170540 B1 EP2170540 B1 EP 2170540B1
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EP
European Patent Office
Prior art keywords
pipe
region
produced
hot
transition
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
EP08773277A
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German (de)
English (en)
French (fr)
Other versions
EP2170540A1 (de
Inventor
Markus Ring
Gerd Kloster
Oliver Sommerkamp
Caroline Rott
Marion Erdelen-Peppler
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
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V&M Deutschland GmbH
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Publication date
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Publication of EP2170540A1 publication Critical patent/EP2170540A1/de
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Classifications

    • 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
    • B21J5/08—Upsetting
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21K—MAKING FORGED OR PRESSED METAL PRODUCTS, e.g. HORSE-SHOES, RIVETS, BOLTS OR WHEELS
    • B21K21/00—Making hollow articles not covered by a single preceding sub-group
    • B21K21/12—Shaping end portions of hollow articles

Definitions

  • the invention relates to a method for producing hot-finished seamless tubes with optimized fatigue properties in the welded state according to the preamble of claim 1.
  • Pipes produced by these methods are used, for example, in the oil or gas production technique, wherein the individual pipe sections are welded by a seam to a continuous strand.
  • the welded joint can cost and efficiently, for. B. by automated welding, and a high fatigue strength of the welded joint can be ensured. Even the most trouble-free media flow through the pipeline is also only guaranteed.
  • a disadvantage of this procedure is that an elaborate logistics for storage and transport of the tubes is required so that for the most trouble-free production process always the matching geometry from each other pipes are available.
  • Another disadvantage is the inflexibility in the production process in case of disturbances, eg. For example, when a pipe to be welded to a conduit pipe end is not available with the proper geometry.
  • the object of the invention is therefore to provide a method for producing hot-rolled seamless tubes, are produced with the tube ends of uniform and exact geometry, which allows efficient welding without a prior measurement and targeted allocation of the pipe ends and at the same time a high fatigue strength of the welded joint is reached.
  • a method is used to solve this problem, which is characterized in that in a first step at the pipe end in a region greater wall thickness is generated than the rest of the tubular body, wherein the wall thickening of the respective pipe end region by upsetting the Pipe end is generated, the transitions to the pipe body generated during upsetting on the outer and inner circumference are offset relative to the tube longitudinal axis and made in a second step in this area by machining the required pipe cross-section and the transition from machined to unprocessed area of the pipe paragraph sales , is provided with such a large radius or radius combinations, that there is a flowing and notch-free transition and the finished contour in the originally thickened end portion of the tube has an outer diameter corresponding to the original diameter of the tube ,
  • the pipe ends are now produced with a reproducible corresponding to the customer requirements geometry that allows welding together without prior measurement and assignment.
  • the logistic effort for storage and transport of the tubes is minimized, which leads to significant cost savings.
  • the wall thickening is chosen to be so large that the dimensional deviations due to the tube tolerances, in particular with regard to the roundness or ovality, can be almost completely compensated by the subsequent mechanical processing without falling below the nominal wall thickness.
  • the wall thickening may also be larger or smaller and extend over shorter or longer sections.
  • the wall thickening and its longitudinal extent should be limited to a necessary for the machining both for manufacturing reasons and for cost reasons.
  • the mechanical processing of the wall thickening can be done for example by unscrewing, with a very low ovality can also be achieved with very small diameter tolerances and very low surface roughness.
  • a centering ring projecting into the machined areas of the two pipe ends can be used prior to the welding of the tube ends in order to ensure optimum alignment of the tube ends for automated welding.
  • the wall thickening is produced by upsetting, in particular by hot upsetting of the pipe end.
  • the upsetting process is advantageously carried out so that the transitions to the tubular body generated during upsetting on the outer and inner circumference are arranged offset relative to the tube longitudinal axis.
  • Extensive investigations have shown that this staggered arrangement of the transitions in the tube longitudinal axis as well as the positioning of the radii in different tube cross-sectional planes during mechanical processing have a positive effect on the fatigue strength of the connection in the operating state.
  • These transitions are advantageously provided in the mechanical processing of the wall thickening with the largest possible radius or radii combinations. These ensure by their location in different cross-sectional planes adhering to a predetermined minimum wall thickness and lead to a possible fluid and notch-free transition to the non-thickened region of the tube. This advantageously ensures a low stress concentration factor in the transition zone.
  • FIG. 1 is a fragmentary longitudinal section of a pipe according to the invention produced with a wall thickening for Rohrau dry- and inside shown at the end of the pipe after upsetting.
  • the tube 1 has in the end region a wall thickening 3 produced in a hot forming step, which merges with a transition region 4, 4 'into the starting cross section 2 of the tube 1.
  • the wall thickening 3 is designed in this example so that the outer diameter of the tube 1 is increased and the inner diameter is reduced.
  • the upsetting process is carried out in such a way that the transition region 4 produced during upsetting on the outer circumference and the transition region 4 'produced on the inner circumference are offset with respect to the tube longitudinal axis relative to the tube longitudinal axis.
  • the transition region 4 produced by the compression process has on the outer circumference of the tube 1 paragraphs 5 and 6 and the transition region 4 'on the inner circumference paragraphs 7 and 8.
  • FIG. 2 shows the finished state of the end region of the tube 1 produced by mechanical processing.
  • the finished contour of the mechanically processed tube 1 has in the originally thickened end region of the tube 1 an outer diameter which corresponds to the original diameter of the tube 1.
  • the transition region 4 is provided with a large radius 9, which ensures a high degree of notch freedom through a flowing, paragraph-free transition together with a very low surface roughness in the machined area.
  • the inner circumference of the thickened tube end is not processed to the original inner diameter, but there remains a small wall thickening 11, starting from the transition region 4 'also with a large radius 10th is provided, which merges fluently and paragraph-free in the output cross section 2 of the tube 1.
  • the radii 9 and 10 are positioned in different tube cross-sectional planes, which has a positive effect on the fatigue strength of the connection in the operating state.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Forging (AREA)
  • Heat Treatment Of Steel (AREA)
  • Pressure Welding/Diffusion-Bonding (AREA)
  • Butt Welding And Welding Of Specific Article (AREA)
EP08773277A 2007-07-24 2008-06-26 Verfahren zur herstellung von warmgefertigten nahtlosen rohren mit optimierten ermüdungseigenschaften im verschweissten zustand Active EP2170540B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102007034895A DE102007034895A1 (de) 2007-07-24 2007-07-24 Verfahren zur Herstellung von warmgefertigten nahtlosen Rohren mit optimierten Ermüdungseigenschaften im verschweißten Zustand
PCT/DE2008/001064 WO2009012744A1 (de) 2007-07-24 2008-06-26 Verfahren zur herstellung von warmgefertigten nahtlosen rohren mit optimierten ermüdungseigenschaften im verschweissten zustand

Publications (2)

Publication Number Publication Date
EP2170540A1 EP2170540A1 (de) 2010-04-07
EP2170540B1 true EP2170540B1 (de) 2012-08-08

Family

ID=39790429

Family Applications (1)

Application Number Title Priority Date Filing Date
EP08773277A Active EP2170540B1 (de) 2007-07-24 2008-06-26 Verfahren zur herstellung von warmgefertigten nahtlosen rohren mit optimierten ermüdungseigenschaften im verschweissten zustand

Country Status (14)

Country Link
US (1) US9718116B2 (ja)
EP (1) EP2170540B1 (ja)
JP (1) JP5165757B2 (ja)
KR (1) KR101499631B1 (ja)
CN (1) CN101827666B (ja)
AR (1) AR067641A1 (ja)
AU (1) AU2008280642B2 (ja)
BR (1) BRPI0814347B1 (ja)
CA (1) CA2694469C (ja)
DE (1) DE102007034895A1 (ja)
EA (1) EA015222B1 (ja)
MX (1) MX2010000815A (ja)
UA (1) UA96827C2 (ja)
WO (1) WO2009012744A1 (ja)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102014102452A1 (de) 2014-02-25 2015-08-27 Vallourec Deutschland Gmbh Verfahren zur Herstellung von warmgewalzten, nahtlosen Rohren aus umwandlungsfähigem Stahl, insbesondere für Rohrleitungen für Tiefwasseranwendungen und entsprechende Rohre
DE102014110980A1 (de) 2014-08-01 2016-02-04 Vallourec Deutschland Gmbh Verfahren zur Herstellung von warmgewalzten nahtlosen Rohren mit verdickten Enden
DE102014216674A1 (de) * 2014-08-21 2016-02-25 Schaeffler Technologies AG & Co. KG Rohrförmiges Bauteil und Verfahren zu seiner Herstellung

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2489729B (en) * 2011-04-07 2013-09-18 Rolls Royce Plc Hollow shaft

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DE913844C (de) * 1951-07-10 1954-06-21 Mannesmann Huettenwerke A G Vorrichtung zum Vorbereiten der Enden von miteinander zu verbindenden Rohren
DE1552889A1 (de) * 1966-05-14 1970-04-23 Hertel Dr Ing Heinrich Anordnung zum Anstauchen von Verdickungen an Rohrenden
FR2469962A1 (fr) * 1979-11-21 1981-05-29 Vallourec Procede et dispositif pour la fabrication d'un tube d'acier sans soudure par laminage a chaud sur mandrin
JPS5972391A (ja) * 1982-10-15 1984-04-24 日本鋼管株式会社 油井用鋼管及びその製造方法
US4579087A (en) * 1983-12-21 1986-04-01 Westinghouse Electric Corp. Corrosion resistant steam generator and method of making same
JPS60166137A (ja) * 1984-02-07 1985-08-29 Kawasaki Steel Corp 管体端部のアプセツト加工方法
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JP2727450B2 (ja) * 1987-10-06 1998-03-11 第一高周波工業株式会社 内外面金属ライニング管の製造方法
US5184495A (en) * 1991-12-03 1993-02-09 Prideco, Inc. Method of internally and externally upsetting the end of a metal tube
US5379625A (en) * 1993-10-20 1995-01-10 Hale; John Method and apparatus for upsetting the ends of steel pipe
JPH07164067A (ja) * 1993-12-13 1995-06-27 Sango Co Ltd 偏肉厚パイプの製造方法
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JP4248058B2 (ja) * 1998-10-20 2009-04-02 第一高周波工業株式会社 耐摩耗性金属管及びその製造方法
JP3725075B2 (ja) * 2002-01-10 2005-12-07 ナカジマ鋼管株式会社 丸形鋼管の製造設備
US7657990B2 (en) * 2002-03-06 2010-02-09 Deere & Company Track chain link and undercarriage track roller having a metallurgically bonded coating
RU2303497C2 (ru) * 2003-03-26 2007-07-27 Сумитомо Метал Индастриз, Лтд. Способ изготовления бесшовной трубы
ITMI20031860A1 (it) 2003-09-29 2005-03-30 Tenaris Connections Ag Apparecchiatura per la misura automatica del profilo esterno ed interno di tubi in corrispondenza delle loro estremita'.
JP4766587B2 (ja) * 2004-02-02 2011-09-07 第一高周波工業株式会社 クラッドパイプ
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Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102014102452A1 (de) 2014-02-25 2015-08-27 Vallourec Deutschland Gmbh Verfahren zur Herstellung von warmgewalzten, nahtlosen Rohren aus umwandlungsfähigem Stahl, insbesondere für Rohrleitungen für Tiefwasseranwendungen und entsprechende Rohre
DE102014110980A1 (de) 2014-08-01 2016-02-04 Vallourec Deutschland Gmbh Verfahren zur Herstellung von warmgewalzten nahtlosen Rohren mit verdickten Enden
DE102014110980B4 (de) * 2014-08-01 2017-10-26 Vallourec Deutschland Gmbh Verfahren zur Herstellung von warmgewalzten nahtlosen Rohren mit verdickten Enden
US10695809B2 (en) 2014-08-01 2020-06-30 Vallourec Deutschland Gmbh Method for producing hot-rolled seamless pipes having thickened ends
DE102014216674A1 (de) * 2014-08-21 2016-02-25 Schaeffler Technologies AG & Co. KG Rohrförmiges Bauteil und Verfahren zu seiner Herstellung

Also Published As

Publication number Publication date
CA2694469C (en) 2015-11-24
DE102007034895A1 (de) 2009-01-29
EP2170540A1 (de) 2010-04-07
AU2008280642A2 (en) 2010-05-27
JP5165757B2 (ja) 2013-03-21
CN101827666A (zh) 2010-09-08
US20100326557A1 (en) 2010-12-30
KR20100039351A (ko) 2010-04-15
UA96827C2 (ru) 2011-12-12
BRPI0814347B1 (pt) 2020-10-13
BRPI0814347A2 (pt) 2015-01-27
KR101499631B1 (ko) 2015-03-06
EA015222B1 (ru) 2011-06-30
AR067641A1 (es) 2009-10-21
JP2010534136A (ja) 2010-11-04
US9718116B2 (en) 2017-08-01
CA2694469A1 (en) 2009-01-29
MX2010000815A (es) 2010-03-01
WO2009012744A1 (de) 2009-01-29
AU2008280642B2 (en) 2014-04-10
CN101827666B (zh) 2012-12-26
AU2008280642A1 (en) 2009-01-29
EA201000234A1 (ru) 2010-06-30

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