EP0494843B1 - Procédé de fabrication d'une pièce tubulaire à parois double . - Google Patents

Procédé de fabrication d'une pièce tubulaire à parois double . Download PDF

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Publication number
EP0494843B1
EP0494843B1 EP92810012A EP92810012A EP0494843B1 EP 0494843 B1 EP0494843 B1 EP 0494843B1 EP 92810012 A EP92810012 A EP 92810012A EP 92810012 A EP92810012 A EP 92810012A EP 0494843 B1 EP0494843 B1 EP 0494843B1
Authority
EP
European Patent Office
Prior art keywords
workpiece
pipe
pipes
mold
fluid
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.)
Revoked
Application number
EP92810012A
Other languages
German (de)
English (en)
Other versions
EP0494843A1 (fr
Inventor
Michel Germaine François Biesemans
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.)
Scambia Industrial Developments AG
Original Assignee
Scambia Industrial Developments AG
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
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First worldwide family litigation filed litigation Critical https://patents.darts-ip.com/?family=4178613&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=EP0494843(B1) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Application filed by Scambia Industrial Developments AG filed Critical Scambia Industrial Developments AG
Publication of EP0494843A1 publication Critical patent/EP0494843A1/fr
Application granted granted Critical
Publication of EP0494843B1 publication Critical patent/EP0494843B1/fr
Anticipated expiration legal-status Critical
Revoked legal-status Critical Current

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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
    • F01N13/08—Other arrangements or adaptations of exhaust conduits
    • 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
    • B21D26/00—Shaping without cutting otherwise than using rigid devices or tools or yieldable or resilient pads, i.e. applying fluid pressure or magnetic forces
    • B21D26/02—Shaping without cutting otherwise than using rigid devices or tools or yieldable or resilient pads, i.e. applying fluid pressure or magnetic forces by applying fluid pressure
    • B21D26/033—Deforming tubular bodies
    • B21D26/045—Closing or sealing means
    • 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
    • B21D26/00—Shaping without cutting otherwise than using rigid devices or tools or yieldable or resilient pads, i.e. applying fluid pressure or magnetic forces
    • B21D26/02—Shaping without cutting otherwise than using rigid devices or tools or yieldable or resilient pads, i.e. applying fluid pressure or magnetic forces by applying fluid pressure
    • B21D26/033—Deforming tubular bodies
    • B21D26/051—Deforming double-walled bodies
    • 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
    • B21D9/00—Bending tubes using mandrels or the like
    • B21D9/15—Bending tubes using mandrels or the like using filling material of indefinite shape, e.g. sand, plastic material
    • 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
    • F01N13/14—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 having thermal insulation
    • 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
    • F01N13/14—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 having thermal insulation
    • F01N13/141—Double-walled exhaust pipes or housings
    • 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
    • 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
    • F01N13/1883—Construction facilitating manufacture, assembly, or disassembly manufactured by hydroforming

Definitions

  • the fluid used to expand the outer tube is preferably a liquid, for example water or possibly a low viscosity, i.e. a low viscosity oil.
  • a gas may be used instead of a liquid.
  • Each recess 53a, 55a has a central main section 53b and 55b and a narrower and shorter end section 53c and 55c at both ends thereof.
  • the mold When the mold is closed, that is to say when the two molded parts 53, 55 abut one another, they together delimit an elongated cavity 57 which serves to hold the workpiece 1, each of the two recesses 53a and 55a forming at least approximately and for example exactly half of the cavity 57 .
  • the two main recess sections 53b, 55b together form a main cavity section 57b with a circular cross section, the radius of the main cavity section 57b being at least 1 mm and for example at least 2 mm larger than the outer radius of the outer tube 5 of the workpiece 1.
  • the two end sections 53c, 55c of the recesses 53a and 55a together form a short, straight, circular cylindrical end section 55c of the cavity 55.
  • the radius the end portions 55c is approximately equal to the outer radius of the outer tube 5 of the workpiece 1, so that the two end portions of the outer tube 5 fit snugly, ie radially at least approximately without play into the cavity end portion 57c.
  • the at least one hydraulic cylinder 41 of the actuating device 39 is connected via at least one fluid line to a fluid source, not shown, for supplying and discharging a hydraulic fluid.
  • the actuating device 39 and / or the fluid source can be designed to adjust the upper support 37 and the upper molded part 55 fastened to it either with a relatively small force quickly over a large distance or slowly with a large force.
  • the pump device 81 consists of a pump which is designed to pump a large amount of fluid per unit of time, but only to generate a relatively low pressure.
  • the pump device 83 is intended to generate a large pressure, but only needs to deliver a small amount of fluid per unit of time.
  • the pump device 83 can have, for example, a multi-stage pump or several separate pumps connected in series or at least one pump and a pressure booster connected to its outlet.
  • the pump device 81 has an inlet connected to the fluid reservoir 77 and an outlet which is connected to the connection 69 via a check valve 85.
  • the pump device 83 has an inlet connected to the fluid reservoir 77 and one directly output connected to terminal 69.
  • a valve 87 which, in the open state, connects the connection 69 to the fluid reservoir 77 in order to relieve pressure.
  • the interior of the inner tube 3 and the intermediate space 91 between the two tubes 3, 5 can still contain water after the expansion of the outer tube and the pressure relief described.
  • the water contained in the inner tube normally flows when the mold 51 is opened and when the workpiece 1 is subsequently removed therefrom without any particular one Measures at least for the most part out of the inner tube 3.
  • the water remaining in the intermediate space 91 after the expansion and the pressure relief may, at least in part, still remain in the intermediate space 91 when the mold 51 is opened and when the workpiece is removed therefrom. After the one end section of the workpiece 1 has been separated off, any water still present in the intermediate space 91 can then be drained out of the latter, so that the intermediate space 91 now only contains air.
  • the axis of the workpiece still lies in one plane, this can, as already mentioned, extend vertically or horizontally, ie parallel or at right angles to the direction of displacement of the displaceable molded part, when the outer tube is expanded. If, on the other hand, the axis of the workpiece is more or less spatially curved when it is bent, the axis of the cavity which defines the outline shape of the outer tube when the tube is expanded must of course also be correspondingly spatially curved.

Claims (8)

  1. Procédé de fabrication d'un élément de conduit (99) de forme rigide, à double paroi, présentant un axe (7) au moins partiellement cintré, dans lequel au moins sur une zone de sa longueur existe un espace intermédiaire (91) entre ses parois, procédé dans lequel on enfile un tube (3), servant à former la paroi intérieure, dans un tube (5) servant à former la paroi extérieure et dans lequel on cintre au moins partiellement la pièce à mettre en forme (1) ainsi obtenue, caractérisé par le fait qu'après le cintrage de la pièce à mettre en forme (1) on envoie sous pression un fluide (79) entre les deux tubes (3, 5) et l'on expanse de ce fait le tube extérieur (5) dans la zone mentionnée de sa longueur.
  2. Procédé selon la revendication 1, caractérisé par le fait que l'on envoie du fluide (79) dans l'espace intermédiaire du tube intérieur (3) sous la même pression qu'entre les deux tubes (3, 5).
  3. Procédé selon la revendication 1 ou 2, caractérisé par le fait que l'on emploie des tubes (3, 5) de forme circulaire en coupe, dans lesquels la distance radiale entre la surface intérieure du tube extérieur (5) et la surface extérieure du tube intérieur (3), les tubes (3, 5) étant enfilés coaxialement l'un dans l'autre et avant l'expansion du tube extérieur (5), vaut au moins 0.01% et au plus 3% du rayon extérieur du tube intérieur (3).
  4. Procédé selon l'une des revendications 1 à 3, caractérisé par le fait que l'on emploie des tubes (3, 5) dans lesquels la distance entre la surface intérieure du tube extérieur (5) et la surface extérieure du tube intérieur (3), les tubes (3, 5) étant coaxialement enfilés l'un dans l'autre et avant l'expansion du tube extérieur (5), vaut au moins 0.01 mm et au plus 1 mm, procédé dans lequel on emploie de préférence des tubes (3, 5) de forme circulaire en coupe dans le cas desquels la distance, mesurée radialement, remplit les conditions mentionnées.
  5. Procédé selon l'une des revendications 1 à 4, caractérisé par le fait que, lors de l'expansion du tube extérieur (5), on fait croître d'au moins 1 mm la distance entre la surface intérieure du tube extérieur (5) et la surface extérieure du tube intérieur (3).
  6. Procédé selon l'une des revendications 1 à 5, caractérisé par le fait qu'après le cintrage et avant l'expansion du tube extérieur (5) de la pièce à mettre en forme (1), on pose cette pièce dans un espace creux (52) d'un moule (51) présentant des parties de moule (53, 55) séparables l'une de l'autre et qu'au moyen du fluide (79) on expanse alors le tube extérieur (5) jusqu'à ce que, dans la zone expansée, il s'applique contre la surface intérieure du moule (51) qui limite l'espace creux (57).
  7. Procédé selon la revendication 6, caractérisé par le fait qu'en posant la pièce à mettre en forme (1) dans le moule (51), on empêche, grâce à ce moule, les deux portions d'extrémité du tube extérieur (5) opposées l'une à l'autre de s'expanser.
  8. Procédé selon l'une des revendications 1 à 7, caractérisé par le fait que pour l'expansion du tube extérieur (5) on emploie comme fluide (79) un liquide, par exemple de l'eau.
EP92810012A 1991-01-11 1992-01-08 Procédé de fabrication d'une pièce tubulaire à parois double . Revoked EP0494843B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CH7091 1991-01-11
CH70/91 1991-01-11

Publications (2)

Publication Number Publication Date
EP0494843A1 EP0494843A1 (fr) 1992-07-15
EP0494843B1 true EP0494843B1 (fr) 1996-03-06

Family

ID=4178613

Family Applications (1)

Application Number Title Priority Date Filing Date
EP92810012A Revoked EP0494843B1 (fr) 1991-01-11 1992-01-08 Procédé de fabrication d'une pièce tubulaire à parois double .

Country Status (7)

Country Link
EP (1) EP0494843B1 (fr)
JP (1) JPH06170473A (fr)
CZ (1) CZ282252B6 (fr)
DE (1) DE59205528D1 (fr)
ES (1) ES2083717T3 (fr)
ZA (1) ZA9295B (fr)
ZW (1) ZW292A1 (fr)

Families Citing this family (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5642605A (en) * 1993-04-14 1997-07-01 Tenner; Mark Food portion inventory device with imprinted predetermined data indicia
US5582052A (en) * 1993-05-20 1996-12-10 Benteler Industries, Inc. Controlled time-overlapped hydroforming
US5363544A (en) * 1993-05-20 1994-11-15 Benteler Industries, Inc. Multi-stage dual wall hydroforming
DE19513559C2 (de) * 1995-04-18 1997-09-25 Werdau Fahrzeugwerk Vorrichtung zum Herstellen von verformten mehrwandigen Rohren mit einem oder mehreren Hohlräumen zwischen den Wandungen
DE19511970C2 (de) * 1995-04-18 1998-07-09 Werdau Fahrzeugwerk Verfahren zum Herstellen von verformten mehrwandigen Rohren mit Hohlräumen zwischen den Wandungen
US5673470A (en) * 1995-08-31 1997-10-07 Benteler Automotive Corporation Extended jacket end, double expansion hydroforming
US5715718A (en) * 1996-02-27 1998-02-10 Benteler Automotive Corporation Hydroforming offset tube
JP2832702B2 (ja) * 1996-08-08 1998-12-09 株式会社三五 二重管の製造方法
SE0200682L (sv) * 2002-03-07 2003-01-21 Finnveden Technology Ab Process vid framställning av slutna härdade profiler utan tvärsnittsbegränsningar
GB2413976A (en) * 2004-05-14 2005-11-16 Fmc Technologies Manufacture of pipes
EP2327486B1 (fr) * 2009-11-26 2012-05-23 DALMINE S.p.A. Procédé de fabrication de coude de tuyau en ligne
CN103691762A (zh) * 2013-12-24 2014-04-02 南京航空航天大学 复杂形状双层管制造方法及密封装置
CN105798195A (zh) * 2016-02-04 2016-07-27 重庆祥吉机械制造有限公司 隔热罩防褶皱冲压工艺
CN109821961B (zh) * 2019-03-26 2023-09-22 桂林电子科技大学 金属双层管复合成形装置及方法

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4019899C1 (fr) * 1990-06-22 1991-12-19 Benteler Ag, 4790 Paderborn, De

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1068206B (de) * 1955-06-17 1959-11-05 Flexonics Corporation, Maywood, 111. (V. St. A.) Verfahren zum Herstellen eines gekrümmten Rohrformstückes
GB1230766A (fr) * 1967-07-28 1971-05-05
FR2364710A1 (fr) * 1977-02-04 1978-04-14 Mazier Paul Perfectionnements aux appareillages destines a la fabrication des soufflets de dilatation pour tuyauterie
US4295255A (en) * 1979-05-07 1981-10-20 The Babcock & Wilcox Company Expanded cooling jacket assembly

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4019899C1 (fr) * 1990-06-22 1991-12-19 Benteler Ag, 4790 Paderborn, De

Also Published As

Publication number Publication date
CZ282252B6 (cs) 1997-06-11
DE59205528D1 (de) 1996-04-11
JPH06170473A (ja) 1994-06-21
ES2083717T3 (es) 1996-04-16
CS7292A3 (en) 1992-10-14
EP0494843A1 (fr) 1992-07-15
ZA9295B (en) 1992-10-28
ZW292A1 (en) 1992-06-17

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