EP0639411B2 - Verfahren zur Herstellung mehrschichtiger Verbundrohre mit Metalleinlagen - Google Patents
Verfahren zur Herstellung mehrschichtiger Verbundrohre mit Metalleinlagen Download PDFInfo
- 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
- Authority
- 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
Links
Images
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.
Description
Claims (4)
- Verfahren zur Herstellung eines Verbundrohres zur Förderung von flüssigen oder gasförmigen Medien in erwärmtem oder gekühltem Zustand, wobei das Verbundrohr wenigstens ein Innenrohr aus Kunststoff und ein dieses ummantelndes Metallrohr aufweist, wobeidas Metallrohr (2) durch Biegen eines Bandkanten (3) aufweisenden Metallbandes um eine in seiner Längsrichtung liegende Achse um das Kunststoffrohr (1) geformt wird, und zwar derart, dass beim zum Metallrohr (2) geformten und eng am Kunststoffrohr (1) anliegendenMetallband die Bandkanten (3) abgewinkelt sind, eng aneinander liegen und radial vom Kunststoffrohr (1) wegweisen,das Kunststoffrohr (1) endlos extrudiert und als endlos und synchron mitlaufender Biegedorn zum Formen des Metallrohres (2) benutzt wird, wobei zwischen dem Kunststoffrohr (1) und dem Metallrohr (2) Haftvermittler extrudiert werden,die Bandkanten (3) des Metallrohres (1) gasdicht verschweißt werden, wobei die abgewinkelten Bandkanten (3) des Metallrohres (2) beim Schweißen zusammengepresst werden, unddie Haftvermittler mittels thermischer Behandlung aktiviert werden,dass das Metallband an seinen Bandkanten (3) zuerst abgewinkelt wird und dann mit abgewinkelten Bandkanten (3) um das Kunststoffrohr (1) geformt wird, wobei das Metallband beim Formen um das Kunststoffrohr (1) an seinen abgewinkelten Bandkanten (3) geführt wird.
- Verfahren nach Anspruch 1, dadurch gekennzeichnet, dass die in Längsrichtung des Metallrohres (2) verlaufenden Bandkanten (3) durch ein Profilierwerkzeug auf eine der Bandstärke entsprechenden Höhe (H) abgewinkelt werden.
- Verfahren nach Anspruch 1 oder 2, dadurch gekennzeichnet, dass das Metallrohr (2) durch Abkühlung der Schweißnaht auf das Kunststoffrohr (1) aufgeschrumpft wird.
- Verfahren nach einem der Ansprüche 1 bis 3, dadurch gekennzeichnet, dass das Kunststoffrohr (1) und das längsnahtverschweißte Metallrohr (2) zur Aktivierung des Haftvermittlers zwecks Verklebung des Kunststoffrohres (1) und des Metallrohres (2) untereinander rundum erwärmt werden.
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE4310272A DE4310272A1 (de) | 1993-03-30 | 1993-03-30 | Verfahren zur Herstellung von mehrschichtigen Verbundrohren mit Metalleinlagen |
DE4310272 | 1993-03-30 |
Publications (3)
Publication Number | Publication Date |
---|---|
EP0639411A1 EP0639411A1 (de) | 1995-02-22 |
EP0639411B1 EP0639411B1 (de) | 1998-06-03 |
EP0639411B2 true EP0639411B2 (de) | 2002-11-06 |
Family
ID=6484204
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP94104590A Expired - Lifetime EP0639411B2 (de) | 1993-03-30 | 1994-03-22 | Verfahren zur Herstellung mehrschichtiger Verbundrohre mit Metalleinlagen |
Country Status (3)
Country | Link |
---|---|
EP (1) | EP0639411B2 (de) |
AT (1) | ATE166806T1 (de) |
DE (2) | DE4310272A1 (de) |
Families Citing this family (19)
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 (de) * | 2003-01-31 | 2004-08-12 | Horst Bonn | Kunststoff-metall-verbundrohr mit metall-doppelmantel und verfahren und vorrichtung zu dessen herstellung |
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 |
Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE565960C (de) † | 1932-12-09 | Meyer Keller & Cie Akt Ges Met | Maschine zur Herstellung autogen geschweisster Rohre | |
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 |
Family Cites Families (24)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3327383A (en) * | 1963-01-03 | 1967-06-27 | Walter C Reed | Method of making clad pipe |
DE2017433A1 (en) * | 1970-04-11 | 1971-10-28 | Felten & Gilleaume Kabelwerke | Flexible aluminium tube |
DE2224314A1 (de) * | 1972-05-18 | 1973-11-29 | Kabel Metallwerke Ghh | Verfahren zur herstellung schallisolierter lueftungsrohre |
SU464457A1 (ru) * | 1972-07-24 | 1975-03-25 | Институт Механики Металлополимерных Систем Академии Наук Белорусской Сср | Способ фольгировани сшитого полиэтилена |
DE2255084C3 (de) * | 1972-11-07 | 1980-07-24 | Mannesmann Ag, 4000 Duesseldorf | Verbundrohr und Verfahren zu seiner Herstellung |
DE2739321C2 (de) * | 1977-09-01 | 1982-09-02 | Karl Heinz 3353 Bad Gandersheim Vahlbrauk | Verfahren zur Herstellung eines kunststoffbeschichteten Metallrohres für Installationszwecke |
DE2746180A1 (de) * | 1977-10-14 | 1979-04-19 | Willi Oppermann | Verfahren zum kontinuierlichen herstellen isolierter doppelrohre |
DE2923544C2 (de) * | 1979-06-09 | 1982-07-15 | Karl Heinz 3353 Bad Gandersheim Vahlbrauk | Verfahren zur Herstellung eines Verbundrohres |
DE7927416U1 (de) * | 1979-09-27 | 1980-01-17 | Egeplast Werner Strumann Gmbh & Co, 4407 Emsdetten | Kunststoffrohr |
DE3016134A1 (de) * | 1980-04-24 | 1981-10-29 | Mecano-Bundy Gmbh, 6900 Heidelberg | Mehrlagenrohr |
DE3023214C2 (de) * | 1980-06-21 | 1983-02-24 | Lorowerk K.H. Vahlbrauk Gmbh, 3353 Bad Gandersheim | Verfahren zur Herstellung eines Verbundrohres |
DE3307120A1 (de) * | 1983-03-01 | 1984-09-06 | Kabel- und Metallwerke Gutehoffnungshütte AG, 4500 Osnabrück | Fernwaermeleitungsrohr |
EP0127127A3 (de) * | 1983-05-27 | 1985-05-02 | Rolf Mattes | Verfahren und Einrichtung zur Herstellung eines Rohrs |
DE3342023A1 (de) * | 1983-11-22 | 1985-05-30 | kabelmetal electro GmbH, 3000 Hannover | Verfahren zur hersellung eines kunststoffrohres mit permeationssperre |
DE3409013A1 (de) * | 1984-03-13 | 1985-09-19 | Nordrohr Kunststoffröhrenwerk GmbH & Co KG, 2200 Elmshorn | Wasserinstallationsrohr, insbesondere fussbodenheizungsrohr |
DE3432944C1 (de) * | 1984-09-07 | 1986-05-15 | SRT Solidresist-Rohrtechnik GmbH, 4770 Soest | Vorrichtung zur Herstellung von Rohren |
US4758455A (en) * | 1985-07-10 | 1988-07-19 | Handy & Harman Automotive Group Inc. | Composite fuel and vapor tube having increased heat resistance |
DE3808728A1 (de) * | 1987-12-24 | 1989-07-06 | Franz Anton Schroeder | Verfahren zur herstellung eines laengsnahtrohres |
DE4130167A1 (de) * | 1991-09-11 | 1993-03-18 | Wirsbo Produktions Und Vertrie | Verbundrohr und verfahren zu seiner herstellung und rohrleitungsverbindung aus dem verbundrohr |
DE4132084A1 (de) * | 1991-09-26 | 1993-04-01 | Gerhart Friesecke | Hochkorrosionsbestaendige entwaesserungsrohre |
DE9114252U1 (de) * | 1991-11-15 | 1992-01-09 | Hewing Gmbh, 4434 Ochtrup, De | |
EP0567667A1 (de) * | 1992-04-25 | 1993-11-03 | Gerhard Rosenberg | Extrudiertes Kunststoff-Metall-Verbundrohr für Installationen |
DE9208730U1 (de) * | 1992-06-30 | 1992-09-17 | Buercher, Friedrich, 8029 Sauerlach, De | |
DE9210769U1 (de) * | 1992-08-12 | 1992-10-08 | Unicor Suhler Maschinenfabrik Gmbh, O-6000 Suhl, De |
-
1993
- 1993-03-30 DE DE4310272A patent/DE4310272A1/de not_active Withdrawn
-
1994
- 1994-03-22 DE DE59406114T patent/DE59406114D1/de not_active Expired - Fee Related
- 1994-03-22 EP EP94104590A patent/EP0639411B2/de not_active Expired - Lifetime
- 1994-03-22 AT AT94104590T patent/ATE166806T1/de not_active IP Right Cessation
Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE565960C (de) † | 1932-12-09 | Meyer Keller & Cie Akt Ges Met | Maschine zur Herstellung autogen geschweisster Rohre | |
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 |
---|---|
EP0639411B1 (de) | 1998-06-03 |
DE4310272A1 (de) | 1994-10-06 |
EP0639411A1 (de) | 1995-02-22 |
ATE166806T1 (de) | 1998-06-15 |
DE59406114D1 (de) | 1998-07-09 |
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