EP2205371B1 - Procédé pour fabriquer des systèmes à double tube - Google Patents

Procédé pour fabriquer des systèmes à double tube Download PDF

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Publication number
EP2205371B1
EP2205371B1 EP08802587.9A EP08802587A EP2205371B1 EP 2205371 B1 EP2205371 B1 EP 2205371B1 EP 08802587 A EP08802587 A EP 08802587A EP 2205371 B1 EP2205371 B1 EP 2205371B1
Authority
EP
European Patent Office
Prior art keywords
pipe
tube
pressing pressure
outer pipe
pressing
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.)
Not-in-force
Application number
EP08802587.9A
Other languages
German (de)
English (en)
Other versions
EP2205371A2 (fr
Inventor
Jochen Beissel
Thilo Reichel
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.)
Eisenbau Kramer Mbh
Original Assignee
Eisenbau Kramer Mbh
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
Family has litigation
First worldwide family litigation filed litigation Critical https://patents.darts-ip.com/?family=40417912&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=EP2205371(B1) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Application filed by Eisenbau Kramer Mbh filed Critical Eisenbau Kramer Mbh
Publication of EP2205371A2 publication Critical patent/EP2205371A2/fr
Application granted granted Critical
Publication of EP2205371B1 publication Critical patent/EP2205371B1/fr
Not-in-force legal-status Critical Current
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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D39/00—Application of procedures in order to connect objects or parts, e.g. coating with sheet metal otherwise than by plating; Tube expanders
    • B21D39/04—Application of procedures in order to connect objects or parts, e.g. coating with sheet metal otherwise than by plating; Tube expanders of tubes with tubes; of tubes with rods
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21C—MANUFACTURE OF METAL SHEETS, WIRE, RODS, TUBES OR PROFILES, OTHERWISE THAN BY ROLLING; AUXILIARY OPERATIONS USED IN CONNECTION WITH METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL
    • B21C37/00—Manufacture of metal sheets, bars, wire, tubes or like semi-manufactured products, not otherwise provided for; Manufacture of tubes of special shape
    • B21C37/06—Manufacture of metal sheets, bars, wire, tubes or like semi-manufactured products, not otherwise provided for; Manufacture of tubes of special shape of tubes or metal hoses; Combined procedures for making tubes, e.g. for making multi-wall tubes
    • B21C37/15—Making tubes of special shape; Making tube fittings
    • B21C37/154—Making multi-wall tubes

Definitions

  • the invention relates to a method for producing a tube-in-tube system comprising an outer tube and at least one inner tube forming a composite tube, wherein the at least one inner tube over the entire length or at least over a larger part of the entire length of the outer tube and in which the at least one inner tube and the outer tube are brought into contact mechanically by exerting a pressing pressure.
  • the DE 32 32 297 A1 shows a method for connecting nested tubular parts of a heat exchanger and a tool for performing the method.
  • a two-piece composite pressing member with axially conical cavity axially over the nested tubular parts moves to the connection of the two longitudinally juxtaposed tubes only in to effect a short, specially designed connection section.
  • a reliable connection is achieved essentially only by positive engagement or an intermediate binding substance.
  • it is not a pipe-in-pipe system in the sense of the present application.
  • the DE 19 15 846 A1 shows a further method for connecting ends of tubes facing each other, wherein a crimp connection is made in order to achieve a tight connection.
  • the connecting part has a circular bore and a concentric polygonal outer surface, the surfaces of which cooperate with the inner sides of a radially compressed die, wherein either the polygonal inner side of the die or the polygonal outer sides of the connecting part are convexly shaped, in order to radially compress two opposing Gesenkab songse a deformation of the connecting part to the tube circumference cause, which also results in a positive connection.
  • this is not a pipe-in-pipe system.
  • the invention has for its object to provide a method of the type mentioned, with the improved properties of tube-in-tube systems of inner tube and outer tube can be achieved.
  • the pressing pressure is applied by means of an impact press with molding tools.
  • the control of the Impander press and the design of the molds, e.g. in their extension over the circumference and length of the pipe system allow adjustments to the material and geometry of the pipe system.
  • the pressing pressure is applied to the outer tube by means of more than two circumferentially distributed molds.
  • the inner contour of the molds is adapted to the peripheral contour of the outer tube in the circumferential direction.
  • a composite tube is thereby obtained by using a relatively thick-walled carrier tube as the outer tube and a thin-walled tube made of a material which is resistant to abrasion and / or chemical action as the inner tube.
  • the manufacturing process of the composite pipe is further facilitated by the fact that with the exercise of the pressing pressure at the same time the peripheral contour of the pipe-in-pipe system is addressed.
  • An advantageous use of the method is that it is used to apply a thin-walled inner coating in a carrier tube in order to produce a suitable inner coating for different uses.
  • the figure shows schematically a tube-in-tube system 1 of an outer tube 2 and an inner tube 3 and an impeller means for producing a composite tube from the outer tube 2 and inner tube 3.
  • the inner tube 3 extends over the entire length of the outer tube. 2 or at least a larger part of it.
  • the impeller device has two shaping tools 10 arranged offset in the circumferential direction, which are acted upon by means of at least one respective impingement cylinder 11 with a force K directed radially inward relative to the pipe system 1 in order to generate the pressing pressure for the impositioning process.
  • the Impanderzylinder 11 are suitably controlled in coordination with the pipe system, thereby simultaneously with the imposition process also straightening the pipe assembly z.
  • the impeller according to the invention more than two, e.g. arranged four molds, which are acted upon by means of respectively associated Impanderzylinder 11 with the required, matched to the pipe system pressing force, wherein also a upsetting path is controlled.
  • one or more molds 10 may be arranged in series, which are also actuated by means of several Impanderzylinder 11. It is also possible to store one or more axially arranged in series forming tools 10 rigid and to move the rest of Impanderzylinder 11.
  • the outer tube 2, in particular a carrier tube may have a multiple wall thickness of the inner tube 3.
  • the outer tube 2, according to the invention a support tube, and the inner tube 3, according to the invention a coating tube, or also several tubes pushed into each other and pressed by the external force by means of the molds 10 radially inwardly against each other.
  • the force of the outer tube 2 is pressed onto the inner tube 3, and there is a mechanical bond between the two tubular body.
  • compressive stresses are additionally generated in the materials from the outside, which positively influence the material with regard to the mechanical technological material values, whereby pipes with stable, relatively thick-walled outer support tube and against chemical and mechanical influences, such as corrosion and abrasion, resistant relatively thin-walled inner tubes be used to obtain composite pipes, the respective applications are optimally adapted.
  • the plastic deformation also results in an improvement of the mechanical properties and, moreover, a standardization of the residual stress situation, for example in the area of welds, is effected.
  • a non-positive connection of the pipe system can also be achieved with regard to different stress / strain profiles of the materials of the tubular body.
  • the impanding process in coordination with the different material and geometric properties the tubular body are controlled so that after elastic springing a different state of stress caused by the elastic resilience of the two tubular body, the springback of the inner tube 3 is stronger than the springback of the outer tube 2 and by the larger remindfederweg of the inner tube 3, a solid bond is formed.
  • the method can thus also be used advantageously for different pipe materials in order to connect them to a stable pipe system.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Rigid Pipes And Flexible Pipes (AREA)
  • Lining Or Joining Of Plastics Or The Like (AREA)
  • Laminated Bodies (AREA)

Claims (4)

  1. Procédé pour fabriquer des systèmes à double tube (1) à partir d'un tube extérieur (2) et d'au moins un tube intérieur (3), qui forment un tube composite, dans lequel l'au moins un tube intérieur (3) s'étend sur toute la longueur ou au moins sur une majeure partie de toute la longueur du tube extérieur (2) et dans lequel l'au moins un tube intérieur (3) et le tube extérieur (2) sont amenés mécaniquement en liaison l'un avec l'autre par application d'une pression de pressage,
    caractérisé en ce que l'au moins un tube intérieur (3) et le tube extérieur (2), en termes de leurs propriétés de matériau et/ou de leurs dimensions géométriques, sont adaptés l'un à l'autre de telle sorte qu'après l'écrasement par la pression de pressage appliquée, on obtienne un assemblage par engagement par force sur une distance d'écrasement prédéfinie ou pouvant être prédéfinie, par rappel élastique,
    en ce que la pression de pressage est appliquée depuis l'extérieur sur le côté extérieur du tube extérieur (2) au moyen d'une presse d'impansion comprenant plus de deux outils de formage (10) répartis dans la direction périphérique,
    en ce que la pression de pressage est adaptée, par des cylindres d'impansion (11) associés aux outils de formage (10), aux propriétés de matériau et aux propriétés géométriques du système de tubes et une distance d'écrasement est commandée de telle sorte qu'après le rappel élastique, il existe un état de tension différent du fait du rappel élastique des deux corps tubulaires, le rappel du tube intérieur (3) étant plus fort que le rappel du tube extérieur (2), et
    en ce que l'on utilise un tube porteur en tant que tube extérieur (2) et un tube à parois minces en tant que tube intérieur (3), en un matériau résistant à l'abrasion et/ou aux agressions chimiques.
  2. Procédé selon la revendication 1,
    caractérisé en ce que
    le contour périphérique du système à double tube (1) est simultanément orienté avec l'application de la pression de pressage.
  3. Procédé selon l'une quelconque des revendications précédentes,
    caractérisé en ce
    qu'une déformation plastique est provoquée lors de l'opération de pressage.
  4. Application du procédé selon l'une quelconque des revendications précédentes, pour appliquer un revêtement interne à parois minces dans un tube porteur.
EP08802587.9A 2007-09-26 2008-09-25 Procédé pour fabriquer des systèmes à double tube Not-in-force EP2205371B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE200710045855 DE102007045855A1 (de) 2007-09-26 2007-09-26 Verfahren zur Herstellung von Rohr-in-Rohr-Systemen
PCT/EP2008/008114 WO2009043530A2 (fr) 2007-09-26 2008-09-25 Procédé pour fabriquer des installations à deux tubes

Publications (2)

Publication Number Publication Date
EP2205371A2 EP2205371A2 (fr) 2010-07-14
EP2205371B1 true EP2205371B1 (fr) 2014-01-22

Family

ID=40417912

Family Applications (1)

Application Number Title Priority Date Filing Date
EP08802587.9A Not-in-force EP2205371B1 (fr) 2007-09-26 2008-09-25 Procédé pour fabriquer des systèmes à double tube

Country Status (5)

Country Link
EP (1) EP2205371B1 (fr)
DE (1) DE102007045855A1 (fr)
DK (1) DK2205371T3 (fr)
ES (1) ES2457850T3 (fr)
WO (1) WO2009043530A2 (fr)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DK1857194T3 (da) 2004-12-21 2011-11-21 Bergrohr Gmbh Siegen Flerlagsrør og fremgangsmåde til fremstilling deraf
DE102009060594A1 (de) 2009-12-23 2011-06-30 Eisenbau Krämer GmbH, 57223 Rohr
DE102015000202A1 (de) * 2014-07-28 2016-01-28 Sosta Gmbh & Co. Kg Verfahren zur Herstellung eines Mehrlagenrohres
DE102015108500A1 (de) * 2015-05-29 2016-12-01 Salzgitter Mannesmann Line Pipe Gmbh Verfahren und Vorrichtung zur Herstellung von Bimetallrohren
CN113664064A (zh) * 2021-08-13 2021-11-19 山东钢铁集团日照有限公司 一种差厚管制管方法

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2102325A (en) 1936-06-09 1937-12-14 Boeing Aircraft Co Airplane control rod and method of making the same
JPS519926B1 (fr) 1967-02-04 1976-03-31
JPS5141582B1 (fr) 1968-03-29 1976-11-10
DE3232297C2 (de) * 1982-08-31 1985-05-09 Süddeutsche Kühlerfabrik Julius Fr. Behr GmbH & Co KG, 7000 Stuttgart Verfahren zum Verbinden von ineinandergesteckten rohrförmigen Teilen eines Wärmetauschers und Werkzeug zur Durchführung des Verfahrens

Also Published As

Publication number Publication date
DK2205371T3 (da) 2014-04-22
WO2009043530A3 (fr) 2009-09-24
ES2457850T3 (es) 2014-04-29
DE102007045855A1 (de) 2009-04-09
WO2009043530A2 (fr) 2009-04-09
EP2205371A2 (fr) 2010-07-14

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