EP2025426A1 - Fabrication d'un récipient à l'aide de déformations internes à haute pression et récipient obtenu - Google Patents

Fabrication d'un récipient à l'aide de déformations internes à haute pression et récipient obtenu Download PDF

Info

Publication number
EP2025426A1
EP2025426A1 EP08105054A EP08105054A EP2025426A1 EP 2025426 A1 EP2025426 A1 EP 2025426A1 EP 08105054 A EP08105054 A EP 08105054A EP 08105054 A EP08105054 A EP 08105054A EP 2025426 A1 EP2025426 A1 EP 2025426A1
Authority
EP
European Patent Office
Prior art keywords
container
hydroforming
hollow body
aluminum
face
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.)
Ceased
Application number
EP08105054A
Other languages
German (de)
English (en)
Inventor
Michael Opitz
Frank Wähner
Michael Hellenkamp
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.)
Hydro Aluminium Deutschland GmbH
Original Assignee
Hydro Aluminium Deutschland GmbH
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 Hydro Aluminium Deutschland GmbH filed Critical Hydro Aluminium Deutschland GmbH
Publication of EP2025426A1 publication Critical patent/EP2025426A1/fr
Ceased legal-status Critical Current

Links

Images

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
    • 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
    • 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
    • B21D51/00—Making hollow objects
    • B21D51/16—Making hollow objects characterised by the use of the objects
    • B21D51/18—Making hollow objects characterised by the use of the objects vessels, e.g. tubs, vats, tanks, sinks, or the like
    • 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
    • B21D51/00—Making hollow objects
    • B21D51/16—Making hollow objects characterised by the use of the objects
    • B21D51/24—Making hollow objects characterised by the use of the objects high-pressure containers, e.g. boilers, bottles
    • 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
    • B21D51/00—Making hollow objects
    • B21D51/16—Making hollow objects characterised by the use of the objects
    • B21D51/26—Making hollow objects characterised by the use of the objects cans or tins; Closing same in a permanent manner
    • B21D51/2615—Edge treatment of cans or tins
    • 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
    • B21D51/00—Making hollow objects
    • B21D51/16—Making hollow objects characterised by the use of the objects
    • B21D51/38—Making inlet or outlet arrangements of cans, tins, baths, bottles, or other vessels; Making can ends; Making closures
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
    • B65D1/00—Containers having bodies formed in one piece, e.g. by casting metallic material, by moulding plastics, by blowing vitreous material, by throwing ceramic material, by moulding pulped fibrous material, by deep-drawing operations performed on sheet material
    • B65D1/02—Bottles or similar containers with necks or like restricted apertures, designed for pouring contents
    • B65D1/0207—Bottles or similar containers with necks or like restricted apertures, designed for pouring contents characterised by material, e.g. composition, physical features
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
    • B65D88/00—Large containers
    • B65D88/02—Large containers rigid
    • B65D88/06—Large containers rigid cylindrical

Definitions

  • the invention relates to a method for producing a container. Furthermore, the invention relates to a use of the container produced by the method as a pressure vessel. In addition, the invention relates to a container having two end face regions and with a container jacket arranged between the end face regions.
  • Containers of the aforementioned type are already known. Usually, the container casing and the two end-side regions are produced separately.
  • a container casing for example, a rectangular blank of a metal strip is formed into a hollow cylindrical body and longitudinally welded.
  • circular blanks for example, are preferably deep-drawn from the same metal strip.
  • the container shell is then welded at both ends with the hollow bodies formed by deep drawing.
  • the container thus produced can then optionally be further processed.
  • a disadvantage of this type of container manufacture is that the shape of the container to be produced can not be chosen arbitrarily. Furthermore, the number of process steps to be carried out is essentially predetermined by the container parts to be preformed separately.
  • the separately preformed container parts such as front side areas and container shell, must also be connected by a joining process such as welding.
  • the present invention is therefore based on the object to propose an improved method for producing a container, which requires less joining steps for the production of the container and at the same time increases the flexibility in the shape of the container. Furthermore, the present invention is based on the object to provide an improved container.
  • the object is achieved by a method for producing a container, in which the container is formed by hydroforming a hollow body, wherein the end face regions of the container are formed during the hydroforming.
  • a hollow body is introduced as a blank into the die of a molding tool.
  • the die of the mold has a shape corresponding to the desired shape of the container to be manufactured.
  • an active medium is introduced into the hollow body.
  • the hollow body is molded into the die of the molding tool.
  • the shaping by hydroforming is not limited to the container shell.
  • the front side regions of the container to be produced are also produced.
  • the container shell as well as the front side areas are thus formed from the same hollow body. A separate provision of frontal areas and container shell is no longer necessary. Complex Preform compilers steps such as the deep drawing of the front side areas are therefore superfluous.
  • the welding or other types of joining the front side areas with the container shell can thus be omitted. Rather, the front side areas are mitgeformt by the hydroforming of the hollow body and are therefore seamlessly connected to the container shell. A material entry heat input during a welding operation to connect the end faces with the container shell can be avoided.
  • the container thus produced therefore has a very good stability. Further, the shape that the container is to take after the hydroforming can be freely selected by a corresponding configuration of the mold.
  • tubular hollow bodies are particularly suitable for hydroforming into a container because they have an annular cross-sectional profile.
  • the shape of the container to be produced is therefore least restricted by a tubular hollow body. But of course, other shaped hollow body suitable for the process.
  • a seamless hollow body for example an extruded profile or a longitudinally welded pipe
  • a seamless hollow body for example, hollow bodies of metal may be used, which have been extruded or cast from a molten metal.
  • a hollow body for example a pipe, which has a weld seam, in particular a longitudinal weld seam.
  • the welding process can preferably be carried out without additional materials.
  • the container consists only of a metal alloy with a uniform composition, which has an advantageous effect on the resistance and strength of the weld or the container.
  • the hollow body is formed of aluminum or of an aluminum alloy.
  • aluminum or aluminum alloys are particularly suitable for hydroforming because of their advantageous forming properties.
  • they have considerable weight advantages over steel containers.
  • the containers made of aluminum or aluminum alloy by hydroforming can be used for a variety of applications.
  • the hollow body is cold-formed high-pressure. This means that no targeted heat input to the hollow body before hydroforming or during hydroforming. Thus, the energy required for hydroforming is kept low.
  • the hollow body warm hydroforming.
  • the hollow body is heated specifically before hydroforming or during hydroforming.
  • the heat can be transmitted to the hollow body via the active medium, the molding tool and / or via separate heat transfer means.
  • the effect of heat on the hollow body improves its forming properties for the hydroforming process.
  • the hollow body is reduced before the hydroforming at least one end.
  • the hydroforming of the end face regions can be supported and / or optionally supplemented.
  • Thread can, for example, after the hydroforming at least one end face portion of the container, a thread be incorporated.
  • the type of thread is basically not limited to specific embodiments. Threads are particularly suitable for creating or making available connection points so that the container can be connected to other components.
  • the container is provided on at least one end face area with a closure, with a connecting piece and / or with lines.
  • a pressure vessel or a tank is produced by the method.
  • gaseous and / or liquid media are stored under pressure.
  • the pressure difference to the environment can be positive or negative.
  • Positive pressure difference means that the pressure in the interior of the container is greater than in the environment of the container.
  • negative pressure difference means that the pressure in the interior of the container is smaller than in the vicinity of the container.
  • the hydroforming containers have no welds between the face areas and the container shell. This reduces the points at which shortcomings, for example insufficient tightness or breakage due to embrittlement of the welded material, can occur in the case of pressure vessels under a pressure load.
  • containers produced by hydroforming are particularly suitable for use as pressure vessels.
  • Pressure vessels are used, for example, as so-called pressurized gas containers for the storage of liquid oxygen, liquid nitrogen, liquid helium or the like, but are not limited to this particular application.
  • Tanks in particular tanks for motor vehicles, can not only be produced more cheaply with the method according to the invention, but also have less potential vulnerabilities due to the small number of welds in the event of an accident.
  • the object according to the invention is achieved according to a further teaching of the present invention by a container with two end-side regions and with a container casing arranged between the end-side regions in that the container has been shaped by hydroforming a hollow body so that the end-side regions of the container are seamlessly connected to the container casing are.
  • the container has a longitudinal weld, in particular a high-frequency welded longitudinal seam or is completely seamless.
  • the starting material of the longitudinally welded containers are usually longitudinally welded tubes, which have an improved forming behavior.
  • completely seamless containers for example, made of an extruded tube, no joining method such as welding is used, so that on the one hand saves steps and weak points on the container body can be avoided.
  • the container casing it is advantageous for the container casing to have an annular, rectangular, square or polygonal cross section. This allows the container shape to be adapted to the application.
  • the cross-sectional profile is but not limited to the above forms.
  • the container is made of aluminum or of an aluminum alloy, so that it has an optimized weight with high strength.
  • a thread is preferably incorporated on at least one end face region of the container in order to easily create a connection point or to simplify the closing of the container.
  • the container is provided with a closure, with a connection piece and / or with lines at at least one end area, the connection and the use of the container can be simplified.
  • the wall thickness of the container is preferably 0.5 mm to 15 mm. This wall thickness ensures the necessary strength, especially when used as a pressure vessel or tank with low weight. At the same time, the forming properties of, for example, an aluminum alloy at these wall thicknesses are still sufficient for carrying out the hydroforming process.
  • the container is a pressure vessel or a tank, they can be provided with reduced weight with simple production with a few process steps.
  • Fig. 1a shows a container shell 2 and two end portions 4a, 4b in a side cross-section, which are to be joined together to form a container 6, as is common in the prior art.
  • the container shell 2 was preformed from a rectangular blank of an aluminum strip into a hollow cylindrical shape and then longitudinally welded.
  • the end face portions 4a, 4b were formed by deep drawing, respectively preformed from a circular blank of the same aluminum strip and after this transformation have a cup-shaped design.
  • the finished container 6 after welding is in Fig. 1b to see.
  • two annular welds 8a, 8b are visible, which substantially circulate the container.
  • welding also brought about a heat input into the aluminum, which in principle reduces the strength of the aluminum alloy at this point.
  • Fig. 2 shows according to an embodiment of the method according to the invention in a schematic side cross-section how a longitudinally welded aluminum tube 10 has been introduced into a mold 12.
  • a completely seamless aluminum tube 10 for example when the tube has been extruded or cast from an aluminum melt.
  • the die of the molding tool 14 has a cylindrical shape and thus defines the shape of the container 6 to be produced.
  • Fig. 3 shows in the continuation of the example Fig. 2 like the aluminum tube 10 with an active medium 16, for example, a water-oil emulsion has been filled.
  • the aluminum tube 10 may be heated to improve its forming properties
  • the protruding aluminum pipe sections at the end face regions 4a, 4b of the molded container 6 can be cut or completely removed, for example by sawing.
  • the front side portions 4a, 4b of the container 6 can now be provided with a thread 18, which can serve in particular as a connection for closures, lines or the like, as in Fig. 4 is shown.
  • the container casing 2 has a circular cross-section. But it is also possible to provide the container casing 2 with a rectangular, in particular square, polygonal or other different cross-section. Polygonal cross sections, which include as special cases, the rectangular and square cross-sections, for example, offer the advantage of allowing a higher packing density of adjacent, similar containers 6.
  • the container produced according to the example described above can be used in particular as a pressure vessel. Since no joining process had to be used to connect the end faces of the container with the container shell, the number of joining zones on the finished container is minimized compared to containers known from the prior art. Due to the lack of joining, the heat input into the container material in the region of the container jacket could also be avoided, which leads to an improved strength of the container.
EP08105054A 2007-08-16 2008-08-15 Fabrication d'un récipient à l'aide de déformations internes à haute pression et récipient obtenu Ceased EP2025426A1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE200710038823 DE102007038823A1 (de) 2007-08-16 2007-08-16 Herstellung eines Behälters mittels Innenhochdruckumformen

Publications (1)

Publication Number Publication Date
EP2025426A1 true EP2025426A1 (fr) 2009-02-18

Family

ID=40119386

Family Applications (1)

Application Number Title Priority Date Filing Date
EP08105054A Ceased EP2025426A1 (fr) 2007-08-16 2008-08-15 Fabrication d'un récipient à l'aide de déformations internes à haute pression et récipient obtenu

Country Status (2)

Country Link
EP (1) EP2025426A1 (fr)
DE (1) DE102007038823A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NL2013074B1 (nl) * 2014-06-26 2016-07-11 Kiss Eng B V Werkwijze voor het vervaardigen van een metalen vat alsmede een dergelijk metalen vat.

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102011105426B4 (de) * 2011-06-22 2013-03-28 Mt Aerospace Ag Druckbehälter zum Aufnehmen und Speichern von kryogenen Fluiden, insbesondere von kryogenen Flüssigkeiten, und Verfahren zu dessen Herstellung sowie dessen Verwendung

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2426601A1 (de) * 1973-10-02 1975-04-10 Alter Licensing Ets Verfahren zum herstellen eines behaelters aus einer superplastischen legierung durch blasen
US20010000278A1 (en) * 1998-02-18 2001-04-19 Yasuhiko Komiya Metal vessel and a fabrication method for the same
JP2003245733A (ja) * 2002-02-26 2003-09-02 Mitsubishi Materials Corp 缶製造方法及びその装置
US20040187536A1 (en) * 2001-05-01 2004-09-30 Kevin Gong Methods of pressure-ram-forming metal containers and the like
DE102005036419A1 (de) * 2005-07-29 2007-02-01 Tower Automotive Hydroforming Gmbh & Co. Kg Verfahren und Vorrichtung zur Herstellung eines ausgebauchten Hohlprofils, insbesondere eines Gasgeneratorgehäuses für eine Airbageinrichtung

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19516064C2 (de) * 1995-05-04 1998-01-29 Rasselstein Ag Verfahren zur Herstellung eines Blechbehälters mit im wesentlichen bauchiger Form
AU2003272320A1 (en) * 2002-09-11 2004-04-30 William C. Dykstra Improved method of forming a tubular blank into a structural component and die therefor

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2426601A1 (de) * 1973-10-02 1975-04-10 Alter Licensing Ets Verfahren zum herstellen eines behaelters aus einer superplastischen legierung durch blasen
US20010000278A1 (en) * 1998-02-18 2001-04-19 Yasuhiko Komiya Metal vessel and a fabrication method for the same
US20040187536A1 (en) * 2001-05-01 2004-09-30 Kevin Gong Methods of pressure-ram-forming metal containers and the like
JP2003245733A (ja) * 2002-02-26 2003-09-02 Mitsubishi Materials Corp 缶製造方法及びその装置
DE102005036419A1 (de) * 2005-07-29 2007-02-01 Tower Automotive Hydroforming Gmbh & Co. Kg Verfahren und Vorrichtung zur Herstellung eines ausgebauchten Hohlprofils, insbesondere eines Gasgeneratorgehäuses für eine Airbageinrichtung

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NL2013074B1 (nl) * 2014-06-26 2016-07-11 Kiss Eng B V Werkwijze voor het vervaardigen van een metalen vat alsmede een dergelijk metalen vat.

Also Published As

Publication number Publication date
DE102007038823A1 (de) 2009-02-19

Similar Documents

Publication Publication Date Title
DE3314264A1 (de) Verfahren zur herstellung von stahl-verbundrohren
EP2602032B1 (fr) Procédé de fabrication d'un tube métallique multicouche
DE19511970C2 (de) Verfahren zum Herstellen von verformten mehrwandigen Rohren mit Hohlräumen zwischen den Wandungen
DE102007006156B3 (de) Verfahren zur Herstellung eines Verbundkörpers und Zwischenprodukt zur Herstellung eines Verbundkörpers
EP0522282A1 (fr) Raccord d'éléments creux et procédé pour leur fabrication
WO2009021838A2 (fr) Profilé creux partiellement renforcé
EP3013493B1 (fr) Procédé de fabrication une pièce de forme tubulaire par formage sous haute pression interne et procédé de fabrication d'une outil pour préformage
DE102013106422B3 (de) Verfahren zum Herstellen eines Abrollkolbens für eine Luftfeder für Kraftfahrzeuge sowie derartiger Abrollkolben
EP2025426A1 (fr) Fabrication d'un récipient à l'aide de déformations internes à haute pression et récipient obtenu
DE4425984C2 (de) Verfahren zum Herstellen eines hohlen Bauteils aus Metall mit in Längsrichtung unterschiedlichen Querschnitten
EP1138408A2 (fr) Méthode de production des corps creux à grand volume
DE102014224469B4 (de) Verfahren zum Herstellen einer, wenigstens einen metallenen Werkstoff aufweisenden Raumform, sowie Raumform
EP1126937A1 (fr) Procede et produit intermediaire pour produire un corps creux et corps creux obtenu a l'aide d'un procede de ce type
DE19713074C2 (de) Verfahren zur Herstellung des Stützkörpers für eine Kopfstütze eines Kraftfahrzeugsitzes
DE102006012625C5 (de) Verfahren zur Herstellung von Profilen
DE102007019511B3 (de) Vorrichtung und Verfahren zum Innenhochdruckumformen eines Verbundmetallrohres
DE4343841C3 (de) Verfahren zum Herstellen eines Achslenkers
EP3812121A1 (fr) Porte de véhicule et sa fabrication
DE102007023173A1 (de) Verfahren zur Bearbeitung der Enden von Rohren
DE102010014537B4 (de) Strukturbauteil für einen Kraftwagen und Verfahren zu dessen Herstellung
DE3412486C2 (de) Verfahren zur Herstellung von Durchlaufkokillen für Stranggußmaschinen
DE102004038138B4 (de) Verfahren zur Herstellung eines hybriden Rohres
DE19750858B4 (de) Verfahren zum Herstellen einer Stranggießkokille
DE102004029588A1 (de) Verfahren zur Herstellung von Profilen aus Magnesiumwerkstoffen
EP2095890B1 (fr) Procédé de déformation d'un composant de profilé creux à l'aide d'une haute pression interne

Legal Events

Date Code Title Description
PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

AK Designated contracting states

Kind code of ref document: A1

Designated state(s): AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MT NL NO PL PT RO SE SI SK TR

AX Request for extension of the european patent

Extension state: AL BA MK RS

17P Request for examination filed

Effective date: 20090810

AKX Designation fees paid

Designated state(s): AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MT NL NO PL PT RO SE SI SK TR

17Q First examination report despatched

Effective date: 20121130

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: THE APPLICATION HAS BEEN REFUSED

18R Application refused

Effective date: 20130405