EP0639411B2 - Procédure de fabrication de conduites composées à plusieurs couches, avec orifices de entrée en métaux ferreux et non ferreux - Google Patents

Procédure de fabrication de conduites composées à plusieurs couches, avec orifices de entrée en métaux ferreux et non ferreux Download PDF

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Publication number
EP0639411B2
EP0639411B2 EP94104590A EP94104590A EP0639411B2 EP 0639411 B2 EP0639411 B2 EP 0639411B2 EP 94104590 A EP94104590 A EP 94104590A EP 94104590 A EP94104590 A EP 94104590A EP 0639411 B2 EP0639411 B2 EP 0639411B2
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EP
European Patent Office
Prior art keywords
tube
band
metallic
metal
synthetic material
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.)
Expired - Lifetime
Application number
EP94104590A
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German (de)
English (en)
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EP0639411B1 (fr
EP0639411A1 (fr
Inventor
Emil H. Friedrich
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Uponor Innovation AB
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Uponor Innovation AB
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Publication of EP0639411A1 publication Critical patent/EP0639411A1/fr
Publication of EP0639411B1 publication Critical patent/EP0639411B1/fr
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Classifications

    • 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
    • B21C37/08—Making tubes with welded or soldered seams
    • B21C37/09—Making tubes with welded or soldered seams of coated strip material ; Making multi-wall tubes
    • 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
    • B21C37/08—Making tubes with welded or soldered seams
    • B21C37/0822—Guiding or aligning the edges of the bent sheet

Definitions

  • the invention relates to a method for manufacturing a composite pipe for the conveyance of liquid or gaseous media in heated or cooled Condition where the composite pipe has at least one inner pipe made of plastic and one encasing it Has metal tube.
  • Such a manufacturing process for plastic-metal composite pipe is from DE-A1-29 23 544, DE-C1-34 32 944 and EP-A-0 127 127.
  • a metal band around a plastic tube shaped so that its in the longitudinal direction of the Band edges that run along the plastic pipe. In this state the band edges are together welded. It is assumed that the inside diameter of the metal pipe is larger than the outer diameter of the plastic inner tube. The differences in diameter are partly clear Are defined. It is also described that the metal pipe is reduced in diameter after welding, a connection between the two pipe materials manufacture. After this reduction process only the prerequisites for an adhesive connection of the two pipes.
  • DE-C-565 960 describes a machine for producing autogenously welded Pipes described in the case of a metal strip with angled strip edges a metal tube (without inner tube) is formed, the shaped Metal tape welded on its tape edges to form a longitudinal seam becomes.
  • the metal inlays of composite pipes are preferred thin-walled and the tube diameter and adapted to the purpose of the pipes.
  • the free forming of thin metal strips into pipes is because of the edge stresses that occur during molding generally known in the volume. So it is extraordinary difficult in the endless production of thin-walled pipes for guiding the belt edges ensure the welding process in the form that an absolutely optimal and constant welding result can be ensured.
  • the registration is based on the task to encase endless extruded plastic pipe, whereby a metal band by shaping the band edges closely adjacent to the plastic pipe in the longitudinal axis molded and welded gas-tight.
  • the longitudinal band edges of the metal band in front placing the same around the plastic inner tube angled. As a result, they are adjacent to each other Band edges essentially radially from the inner tube when the metal band is placed around the inner tube.
  • the method presented has the basic idea the plastic inner tube with a metal band to form a positive fit and by bending the Band edges reliable welding enable.
  • the plastic inner tube as a bending mandrel for forming the metal band Allows the use of very thin metal strips.
  • the Metal tube shape as well as the tolerances that occur are determined by the inner tube.
  • the non-positive shape according to the invention of the metal band around the inner tube become oxygen inclusions avoided the following Longitudinal seam welding has a disruptive effect, as does the adhesive bond between inner tube and metal jacket influence negatively.
  • the running in the longitudinal axis and according to the invention raised strip edges are used during welding firmly pressed together and can be used as a guide for the one in the middle, above the strip edge joint Serve welding head.
  • the tight-fitting deformation of the inner tube with the ones raised to the outside Belt edges also offer advantages in terms of improved Pipe edge guidance in a continuous process. This is an essential requirement to to be able to manufacture the pipe without problems, highly productively.
  • Preferably in the longitudinal direction of the pipe running belt edges with a profiling tool bent a height corresponding to the tape thickness.
  • the invention offers the advantage that on pipe calibration or reducing devices can be dispensed with can, because the composite plastic inner tube with the Metal jacket is welded to size and fit. Because the strip edge preparation according to the invention can the longitudinal seam welding of the metal pipe the plastic inner tube without an air gap. Further is a band trimming process, as is common usual, not necessary, because those guaranteed according to DIN Width tolerances for fine strips are for one trouble-free production process absolutely sufficient, with which the operational safety of the manufacturing plant is increased.
  • the metal pipe is after the longitudinal seam welding especially warm in the area of the weld. With when the weld seam cools down, it shrinks instead of. This helps keep the metal pipe is pulled non-positively onto the inner tube.
  • the tube combination Plastic metal is heated all around.
  • the adhesion promoter is activated and the bond between the two pipes lying close together from different materials takes place and will again through the centric shrinking process of the metal jacket favored.
  • the gluing process of the two pipes against each other is through the non-positive forming favored and by theshrinking process after the thermal treatment optimized.
  • FIG. 1 shows a perspective view of a partially broken away plastic-metal composite pipe shown, while the figures 2 and 3 show cross sections of Fig. 4 a perspective view of the composite pipe after partial welding of the from the high standing Band edges of the metal tube formed Longitudinal seam.
  • the composite pipe has a plastic inner pipe 1 made of PE or VPE material, around which a metal band made of aluminum with angled band edges 3 to a metal tube 2 is formed.
  • the contiguous radially protruding band edges 3 are by means of a welding head 4 welded together.
  • the radial projection H of the band edges 3 (Fig. 2) the height of the weld seam can be determined (Fig. 3).
  • an outer tube 5 made of PE or XLPE material be extruded.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Butt Welding And Welding Of Specific Article (AREA)
  • Laminated Bodies (AREA)
  • Rigid Pipes And Flexible Pipes (AREA)
  • Lining Or Joining Of Plastics Or The Like (AREA)
  • Arc Welding In General (AREA)

Claims (4)

  1. Procédé de fabrication d'un tube composite pour transporter des milieux liquides ou gazeux à l'état chauffé ou refroidi, le tube composite présentant au moins un tube intérieur en plastique et un tube métallique qui entoure celui-ci, dans lequel
    en courbant une bande métallique comportant des bords de bande (3) autour d'un axe situé selon la direction longitudinale, on met en forme autour du tube de plastique (1) le tube métallique (2) de façon que, la bande métallique étant mise en forme pour donner le tube métallique (2) et s'appliquant étroitement contre le tube de plastique (1), les bords de bande (3) sont rabattus, s'appliquent étroitement l'un contre l'autre et saillent radialement du tube de plastique (1),
    on extrude sans fin le tube de plastique (1) et on l'utilise comme mandrin de cintrage sans fin avançant en synchronisme pour former le tube métallique (2), des générateurs d'adhérence étant extrudés entre le tube de plastique (1) et le tube métallique (2),
    on soude de façon étanche au gaz les bords de bande (3) du tube métallique (1), les bords de bande (3), rabattus, du tube métallique (2) étant serrés ensemble dans cette position lors du soudage, et
    on active les générateurs d'adhérence au moyen d'un traitement thermique,
    charactérisé par le fait
    que, premièrement, on rabatte les bords de bande (3) de la bande métallique et puis, les bords de bande (3) étant rabattus, on met en forme la bande métallique autour du tube de plastique (1), la bande métallique, lors de la mise en forme atour du tube de plastique (1), étant guidée par ses bords de bande (3) rabattus.
  2. Procédé selon la revendicaton 1, charactérisé par le fait qu'au moyen d'un outil de profilage on rabat, sur un hauteur (H) correspondant à l'épaisseur de la bande, les bords (3) de la bande orientés selon la direction longitudinale du tube métallique (2).
  3. Procédé selon la revendicaton 1 ou 2, charactérisé par le fait que le tube métallique (2) se rétreint sur le tube de plastique par refroidissement du cordon de soudre.
  4. Procédé selon l'une des revendicatons 1 à 3, charactérisé par le fait que pour activer le générateur d'adhérence dans le but de coller l'un à l'autre le tube de plastique (1) et le tube métallique (2), on chauffe tout autour le tube de plastique (1) et le tube métalique (2) soudé le long d'un cordon longitudinal.
EP94104590A 1993-03-30 1994-03-22 Procédure de fabrication de conduites composées à plusieurs couches, avec orifices de entrée en métaux ferreux et non ferreux Expired - Lifetime EP0639411B2 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE4310272 1993-03-30
DE4310272A DE4310272A1 (de) 1993-03-30 1993-03-30 Verfahren zur Herstellung von mehrschichtigen Verbundrohren mit Metalleinlagen

Publications (3)

Publication Number Publication Date
EP0639411A1 EP0639411A1 (fr) 1995-02-22
EP0639411B1 EP0639411B1 (fr) 1998-06-03
EP0639411B2 true EP0639411B2 (fr) 2002-11-06

Family

ID=6484204

Family Applications (1)

Application Number Title Priority Date Filing Date
EP94104590A Expired - Lifetime EP0639411B2 (fr) 1993-03-30 1994-03-22 Procédure de fabrication de conduites composées à plusieurs couches, avec orifices de entrée en métaux ferreux et non ferreux

Country Status (3)

Country Link
EP (1) EP0639411B2 (fr)
AT (1) ATE166806T1 (fr)
DE (2) DE4310272A1 (fr)

Families Citing this family (19)

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Publication number Priority date Publication date Assignee Title
US5850855A (en) * 1990-01-09 1998-12-22 Ems-Inventa Ag Flexible coolant conduit and method of making same
DE29511606U1 (de) * 1995-07-18 1995-09-21 Inventa Ag Kühlflüssigkeitsleitung
DE19515853C2 (de) * 1995-04-29 2001-01-18 Hewing Gmbh Verfahren zum Ummanteln eines Kunststoffrohres mit einer Metallummantelung
DE19632021C1 (de) * 1996-08-08 1998-01-02 Hewing Gmbh Verfahren zum Ummanteln eines Kunststoffrohres mit einem Metallband und Schweißstation zum Verschweißen der einander überlappenden Längsränder des Metallbandes
DE19646859C1 (de) * 1996-11-13 1998-04-23 Hewing Gmbh Verfahren zum Ummanteln eines Kunststoffrohres mit einem Metallband
DE29713049U1 (de) * 1997-07-23 1997-09-18 Unicor Rohrsysteme Gmbh Verbundrohr
US6293311B1 (en) 1998-05-22 2001-09-25 Pmd Holdings Corp. Multilayer composite pipe fluid conduit system using multilayer composite pipe and method of making the composite
DE10022823A1 (de) * 2000-05-10 2001-11-22 Unicor Extrusionstechnik Gmbh Verfahren zur Herstellung von Mehrschicht-Metall-Verbundrohren
DE10255632B4 (de) * 2002-11-28 2005-03-17 CCS Technology, Inc., Wilmington Verlegeelement für ein Nachrichten-Übertragungselement, Verfahren zur Herstellung eines derartigen Verlegeelements sowie Verfahren zur Verlegung eines Nachrichten-Übertragungselements
WO2004067269A2 (fr) * 2003-01-31 2004-08-12 Horst Bonn Tuyau composite plastique-metal a double enveloppe metallique et procede de fabrication dudit tuyau
DE10318328B3 (de) * 2003-04-19 2004-07-15 Uponor Innovation Ab Kunstoff/Metall-Verbundrohr
CN100415436C (zh) * 2004-09-16 2008-09-03 吉欣（英德）热轧不锈复合钢有限公司 一种冷轧连续焊接金属内复合管的制造方法
AU2007293923B2 (en) 2006-09-02 2011-12-08 Uponor Innovation Ab Method for the production of a cylindrical, strand-shaped part
DE102006057199A1 (de) * 2006-12-05 2008-06-12 Henco Industries Nv Verbundrohr mit zwei Polyvinylidenflurid-Schichten
DE102007006699A1 (de) * 2007-02-10 2008-08-14 Bayerische Motoren Werke Aktiengesellschaft Abgasanlage für eine Brennkraftmaschine
DE102009013251B4 (de) * 2009-03-14 2018-06-21 Becker Plastics Gmbh Kunststoff-Metall-Verbundrohr
JP5871417B1 (ja) 2015-12-04 2016-03-01 中川産業株式会社 二重管の製造方法
CN110961811A (zh) * 2018-09-29 2020-04-07 宝山钢铁股份有限公司 一种复合管制造方法
CN112171208B (zh) * 2020-09-30 2021-08-24 临沂华庚新材料科技有限公司 一种陶瓷内衬管管道切割工艺

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DE2058379A1 (de) † 1970-11-27 1972-06-08 Kabel Metallwerke Ghh Verfahren zur Herstellung eines rohrfoermigen Gebildes

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Publication number Priority date Publication date Assignee Title
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DE2045973A1 (de) † 1969-10-09 1971-05-13 Kabel Metallwerke Ghh Rohrförmiges Gebilde
DE2058379A1 (de) † 1970-11-27 1972-06-08 Kabel Metallwerke Ghh Verfahren zur Herstellung eines rohrfoermigen Gebildes

Also Published As

Publication number Publication date
DE59406114D1 (de) 1998-07-09
EP0639411B1 (fr) 1998-06-03
ATE166806T1 (de) 1998-06-15
EP0639411A1 (fr) 1995-02-22
DE4310272A1 (de) 1994-10-06

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