WO1999025967A1 - Tuyau metallique - Google Patents

Tuyau metallique Download PDF

Info

Publication number
WO1999025967A1
WO1999025967A1 PCT/EP1998/007272 EP9807272W WO9925967A1 WO 1999025967 A1 WO1999025967 A1 WO 1999025967A1 EP 9807272 W EP9807272 W EP 9807272W WO 9925967 A1 WO9925967 A1 WO 9925967A1
Authority
WO
WIPO (PCT)
Prior art keywords
reinforcement
pipe
tube
wall
layer
Prior art date
Application number
PCT/EP1998/007272
Other languages
German (de)
English (en)
Inventor
Alfred Steck
Original Assignee
Zeuna-Stärker GmbH & Co. KG
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 Zeuna-Stärker GmbH & Co. KG filed Critical Zeuna-Stärker GmbH & Co. KG
Priority to AU13380/99A priority Critical patent/AU1338099A/en
Publication of WO1999025967A1 publication Critical patent/WO1999025967A1/fr

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
    • F01N13/00—Exhaust or silencing apparatus characterised by constructional features ; Exhaust or silencing apparatus, or parts thereof, having pertinent characteristics not provided for in, or of interest apart from, groups F01N1/00 - F01N5/00, F01N9/00, F01N11/00
    • F01N13/18—Construction facilitating manufacture, assembly, or disassembly
    • F01N13/1838—Construction facilitating manufacture, assembly, or disassembly characterised by the type of connection between parts of exhaust or silencing apparatus, e.g. between housing and tubes, between tubes and baffles
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
    • F01N13/00—Exhaust or silencing apparatus characterised by constructional features ; Exhaust or silencing apparatus, or parts thereof, having pertinent characteristics not provided for in, or of interest apart from, groups F01N1/00 - F01N5/00, F01N9/00, F01N11/00
    • F01N13/08—Other arrangements or adaptations of exhaust conduits
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
    • F16L9/00—Rigid pipes
    • F16L9/02—Rigid pipes of metal

Definitions

  • the present invention relates to a metallic pipe, in particular an exhaust pipe for the exhaust system of a motor vehicle, with a pipe wall and a reinforcement provided at the end and abutting the pipe wall.
  • Metallic pipes are subject to relatively high mechanical loads in a large number of applications. This applies in particular to the exhaust pipes of the exhaust systems of motor vehicles, in which both oscillations and vibrations of the drive motor and shocks due to bumps in the road place a great strain on the pipes in question.
  • the loads concentrate on the pipe ends at which the pipe in question is connected to the adjacent components of the exhaust system.
  • reinforcement is often provided at the end of metallic pipes, in particular exhaust pipes for the exhaust system of motor vehicles.
  • This usually consists of a support sleeve which is pushed over the end of the pipe and welded to the pipe wall in the intended position.
  • a disadvantage of such a generic, reinforced metallic tube is the effort associated with its production, because the support sleeves must be manufactured, managed, fitted and welded separately, with the fact that the support sleeve only develops its optimal effect if its inside diameter is exact is matched to the outside diameter of the pipe wall.
  • the object on which the present invention is based is derived from this and consists in reducing the costs associated with the production of a generic tube.
  • the reinforcement is in one piece with the tube wall, in that it consists of at least one turned-up tube section lying against the tube wall.
  • the pipe wall at the end of the pipe merges into the reinforcement under a 180 ° inversion.
  • the reinforcement is formed from an upturned or turned-up tube section which previously protrudes beyond the later end of the tube, "turning inside out” in this sense meaning that the inner surface of the tube section used to form the reinforcement after the "turning upside down” points outwards and vice versa.
  • a preferred development of the invention is characterized in that the reinforcement rests on the inside of the tube wall.
  • the reinforcement is the reinforcement Kung forming tube section turned inside out, and the former inner surface of that tube section faces outwards and lies against the inner surface of the tube wall.
  • the reinforcement can be formed in one layer.
  • it is double-layered and consists of a rolled-up first reinforcement layer lying on the inside of the tube wall and a not turned-up second reinforcement layer lying on the inside of the first reinforcement layer.
  • Such a double-layer structure of the reinforcement is reflected in a particularly efficient stiffening of the corresponding pipe end.
  • there are advantages in terms of production technology in that the outer region of the tube section serving to form the reinforcement is not turned inside out, but rather without being turned inside out, forms the inner, second reinforcing layer solely by axial displacement.
  • the tube wall can be widened in the region of the reinforcement.
  • Such a widening of the tube wall enables the tube in the area of the reinforcement to have the same clear width as in the non-reinforced area.
  • the tube wall can be expanded in the area in which the reinforcement will later lie before the tube section forming the reinforcement is turned inside out. It is also possible to expand the tube wall (together with the reinforcement) after the reinforcement has been produced by turning the corresponding tube section inside out.
  • pipes according to the invention have been explained above, in which the reinforcement lies on the inside of the pipe wall, this represents a preferred, but not the only possible embodiment of the invention.
  • the reinforcement lies on the outside of the pipe wall.
  • the area of the tube section forming the subsequent reinforcement, which forms the second reinforcement layer lies on the outside of the first reinforcement layer, which in turn lies on the outside of the tube wall - and this before the reinforcement is formed.
  • the metallic tube according to the invention can have a flange at the end, in that a flange plate is welded to the tube wall and the reinforcement.
  • a flange plate is welded to the tube wall and the reinforcement.
  • the advantages of the present invention particularly come into play when a flange provided at the end is designed as a common widening of the tube wall and the reinforcement.
  • the reinforcement and the flange can be produced particularly inexpensively and precisely in a single two-stage operation in the same machine.
  • FIG. 7 shows four steps in the manufacture of a reinforced tube according to FIG. 1 and
  • Fig. 8 five steps in the manufacture of a reinforced tube with flange.
  • the tube 1 in each case comprises a tube wall 2 and a reinforcement 3.
  • the reinforcement 3 is in one piece with the tube wall 2. It is formed by reshaping a tube section initially projecting beyond the later tube end , wherein the reinforcement consists of at least one rolled-up pipe section 4 lying against the pipe wall 2.
  • the reinforcement 3 is constructed in one layer.
  • the reinforcement 3 of the tube consists exclusively of the above-mentioned upturned tube section 4.
  • the reinforcement 3 is arranged on the inside, ie the tube section 4 lies against the inside of the tube wall 2.
  • the pipe shown in FIG. 2 differs from that according to FIG. 1 in that the pipe wall 2 is expanded cylindrically in the area of the reinforcement 3.
  • the tube wall 2 can be expanded cylindrically in the area in question before the tube section 4 is turned inside out; in the same way, tube wall 2 and tube portion 4 which has already been turned inside out (cf. FIG. 1) can be cylindrically expanded in order to produce the tube shown in FIG. 2.
  • tube in the area of the reinforcement 3 has the same inside width as outside the reinforced area, which is often preferred for fluidic reasons.
  • Fig. 3 illustrates a pipe according to the invention, the reinforcement of which is constructed in two layers.
  • the reinforcement 3 comprises a first, turned-up reinforcement layer 4 and a second, not turned-up reinforcement layer 5.
  • the first reinforcement layer 4 lies against the inside of the tube wall 2, while the second reinforcement layer 5 lies against the inside of the first reinforcement layer 4.
  • the tube wall 2 is expanded cylindrically in the area of the reinforcement 3.
  • the second reinforcement layer 5, which has been produced without having been turned upside down, by axially displacing the corresponding pipe section, has only a slightly smaller clear width than the pipe 1 outside the reinforcement.
  • FIG. 4 illustrates a pipe according to the invention with an external reinforcement 3.
  • This is in turn constructed in two layers; it includes a rolled-up, first reinforcement layer 6 lying on the outside of the tube wall 2 and a second reinforcement layer 7 which is not turned inside out and which lies on the outside of the first reinforcement layer 6 corresponding pipe section and thereby turning inside out the pipe section forming the later first reinforcement layer 6, the double-layer reinforcement is formed.
  • FIG. 5 shows a tube 1 which has a flange 8 at the end.
  • This tube emerged from the tube according to FIG. 4 in that the tube wall 2 together with the two layers 6 and 7 of the reinforcement 3 was spherically widened at the end.
  • the flange 8 is formed as a common widening 9 of the tube wall 2 and the reinforcement 3 in a partial end region of the reinforcement 3.
  • FIG. 6 shows a tube 1 with a flange 8, which has been formed by deformation from the tube illustrated in FIG. 2.
  • the conical flange 8 is designed as a common widening 9 of the tube wall 2 and the reinforcement 3 in an end portion of the reinforcement.
  • FIG. 7 illustrates, in four steps, a preferred way of producing a single-layer internally reinforced tube, as shown in FIG. 1 and described above.
  • the pipe end is of a length L1, which is essentially the axial length L2 of that pipe section 4 corresponds to, which forms the reinforcement 3 in the finished tube (see step d), slightly retracted.
  • the drawn-in end pipe section has a diameter four times the value of the wall thickness S smaller than the pipe in the remaining area.
  • the drawn-in end pipe section could also have a diameter that is only three times the value of the wall thickness S less than the diameter of the pipe outside the drawn-in pipe section.
  • the drawn-in pipe section is gradually pushed into the not drawn-in pipe section.
  • a simple pressing tool for example a pressure plate, is suitable for this.
  • a tool 10 which essentially consists of a stepped mandrel, serves to further roll up the drawn-in tube section to form the single-layer reinforcement. If the tool 10 is inserted into the partially formed tube, as shown in step c of FIG. 7 (arrow A), the retracted tube section is pushed in further through the step 11 of the tool 10 and completely turned inside out, as shown in FIG Step d of Fig. 7 is shown.
  • FIG. 7 is also suitable for illustrating the production of the tubes according to FIGS. 3 and 6.
  • the method illustrated in FIG. 7 has to be terminated in step c.

Abstract

L'invention concerne un tuyau métallique, notamment un tuyau d'échappement destiné à l'installation d'échappement des gaz d'échappement d'un véhicule. Ce tuyau comprend une paroi (2) dont l'extrémité terminale est dotée d'un renforcement (3). Ce renforcement est conçu d'une seule pièce avec la paroi (2) puisqu'il est constitué au moins d'une section (4) repliée qui est en contact avec la paroi (2).
PCT/EP1998/007272 1997-11-18 1998-11-13 Tuyau metallique WO1999025967A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AU13380/99A AU1338099A (en) 1997-11-18 1998-11-13 Metal pipe

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19750959.2 1997-11-18
DE1997150959 DE19750959A1 (de) 1997-11-18 1997-11-18 Metallisches Rohr

Publications (1)

Publication Number Publication Date
WO1999025967A1 true WO1999025967A1 (fr) 1999-05-27

Family

ID=7849013

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/EP1998/007272 WO1999025967A1 (fr) 1997-11-18 1998-11-13 Tuyau metallique

Country Status (3)

Country Link
AU (1) AU1338099A (fr)
DE (1) DE19750959A1 (fr)
WO (1) WO1999025967A1 (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPWO2013073589A1 (ja) * 2011-11-14 2015-04-02 フタバ産業株式会社 管の溶接接続構造
CN112879143A (zh) * 2019-11-29 2021-06-01 佛吉亚排气系统有限公司 通过同心翻卷加厚的管

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10255067B4 (de) * 2002-11-25 2005-01-27 Autoliv Development Ab Gassackanordnung mit starrer Gaslanze
FR2854431B1 (fr) * 2003-04-29 2006-09-01 Faurecia Sys Echappement Organe de ligne d'echappement d'un vehicule automobile.
DE102005013945A1 (de) * 2005-03-26 2006-10-05 Frimo Group Gmbh Verfahren zum Umkrempeln eines Schlauchendes
WO2007129336A1 (fr) * 2006-05-09 2007-11-15 Cienne Gas Di Casoni Valerio Canalisation de connexion métallique pour équipement à gaz
DE102015014339A1 (de) * 2015-11-05 2017-05-11 Alexander Wolf Vorrichtung zur Abgasreinigung
DE102016105902B4 (de) 2016-03-31 2021-04-29 Fischer Rohrtechnik Gmbh Verfahren zur Herstellung eines Rohres aus Metall mit unterschiedlichen Wandstärken

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE641038C (de) * 1931-10-01 1937-01-18 Roehrenwerke Akt Ges Deutsche Vorrichtung zur Herstellung von bis zur Anlage an die Rohraussenwand umgeboerdelten gedoppelten Rohrenden
DE3230444A1 (de) * 1982-08-16 1984-02-16 Horst 7730 Villingen-Schwenningen Klann Boerdelpresse fuer metallrohre
DE3422040A1 (de) * 1984-06-14 1985-12-19 Heinz-Eckhard Dipl.-Ing. 6100 Darmstadt Engel Stuelp-umformverfahren zur herstellung von doppelwandigen zylindrischen werkstuecken sowie umformwerkzeug hierfuer
EP0882530A2 (fr) * 1997-06-06 1998-12-09 E.M.S. Procédé de confirmation à froid en double paroi de l'extrémité d'un tube métallique par retroussage de la paroi première d'extrémité

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3266822A (en) * 1961-08-21 1966-08-16 Price Pfister Brass Mfg Metal forming process for shaping ends of tubes and the product thereof
DE2323071B2 (de) * 1973-05-08 1975-07-24 Daimler-Benz Ag, 7000 Stuttgart Vorrichtung zum Ablenken der Auspuffgase
DE3640690A1 (de) * 1986-11-28 1988-06-09 Interatom Rohr mit aufgeweitetem, verstaerktem ende und einrichtung zu seiner herstellung
DE4437395A1 (de) * 1994-10-19 1996-05-02 Werdau Fahrzeugwerk Verfahren zum Anstauchen von Rohrenden und Vorrichtung zur Durchführung des Verfahrens
JP3445858B2 (ja) * 1994-12-29 2003-09-08 臼井国際産業株式会社 保護被覆層を有する自動車用金属配管

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE641038C (de) * 1931-10-01 1937-01-18 Roehrenwerke Akt Ges Deutsche Vorrichtung zur Herstellung von bis zur Anlage an die Rohraussenwand umgeboerdelten gedoppelten Rohrenden
DE3230444A1 (de) * 1982-08-16 1984-02-16 Horst 7730 Villingen-Schwenningen Klann Boerdelpresse fuer metallrohre
DE3422040A1 (de) * 1984-06-14 1985-12-19 Heinz-Eckhard Dipl.-Ing. 6100 Darmstadt Engel Stuelp-umformverfahren zur herstellung von doppelwandigen zylindrischen werkstuecken sowie umformwerkzeug hierfuer
EP0882530A2 (fr) * 1997-06-06 1998-12-09 E.M.S. Procédé de confirmation à froid en double paroi de l'extrémité d'un tube métallique par retroussage de la paroi première d'extrémité

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPWO2013073589A1 (ja) * 2011-11-14 2015-04-02 フタバ産業株式会社 管の溶接接続構造
CN112879143A (zh) * 2019-11-29 2021-06-01 佛吉亚排气系统有限公司 通过同心翻卷加厚的管
FR3103720A1 (fr) * 2019-11-29 2021-06-04 Faurecia Systemes D'echappement Tube épaissi par retroussage concentrique

Also Published As

Publication number Publication date
DE19750959A1 (de) 1999-06-02
AU1338099A (en) 1999-06-07

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