WO2013083842A1 - Élément à corps creux et procédé de fabrication associé - Google Patents

Élément à corps creux et procédé de fabrication associé Download PDF

Info

Publication number
WO2013083842A1
WO2013083842A1 PCT/EP2012/074967 EP2012074967W WO2013083842A1 WO 2013083842 A1 WO2013083842 A1 WO 2013083842A1 EP 2012074967 W EP2012074967 W EP 2012074967W WO 2013083842 A1 WO2013083842 A1 WO 2013083842A1
Authority
WO
WIPO (PCT)
Prior art keywords
hollow body
metal blank
body component
fibers
mold
Prior art date
Application number
PCT/EP2012/074967
Other languages
German (de)
English (en)
Inventor
Lars Peters
Original Assignee
Thyssenkrupp System Engineering 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 Thyssenkrupp System Engineering Gmbh filed Critical Thyssenkrupp System Engineering Gmbh
Publication of WO2013083842A1 publication Critical patent/WO2013083842A1/fr

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C70/00—Shaping composites, i.e. plastics material comprising reinforcements, fillers or preformed parts, e.g. inserts
    • B29C70/68—Shaping composites, i.e. plastics material comprising reinforcements, fillers or preformed parts, e.g. inserts by incorporating or moulding on preformed parts, e.g. inserts or layers, e.g. foam blocks
    • B29C70/86—Incorporated in coherent impregnated reinforcing layers, e.g. by winding
    • B29C70/865—Incorporated in coherent impregnated reinforcing layers, e.g. by winding completely encapsulated
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29L—INDEXING SCHEME ASSOCIATED WITH SUBCLASS B29C, RELATING TO PARTICULAR ARTICLES
    • B29L2022/00—Hollow articles

Definitions

  • the invention relates to a hollow body component, for example for safety-relevant applications in the automotive sector.
  • Hollow body components which are the subject of the invention compete with metallic components produced by hydroforming.
  • hydroforming metal fittings are made to flow at very high pressure. This results in contour-accurate components that are characterized by an extremely high strength.
  • hydroforming for example, energy-absorbing bumpers, window frames with integrated rollover protection or chassis components can be manufactured.
  • compounds of the high-pressure injection are produced by means of hydroforming.
  • a process for producing hollow body components by hydroforming is known from EP 1 609 545 A2.
  • a hollow body made of a fiber-reinforced plastic which has a thin-walled core of light metal or plastic.
  • Made of light metal or plastic core simplifies the shape of the fiber-reinforced plastic body and makes no contribution to its strength.
  • the invention has for its object to reduce the weight of a formed by internal high pressure forming component while maintaining the good strength properties.
  • the object of the invention and solution of this problem is a hollow body component according to claim 1.
  • the hollow body component according to the invention consists of a composite material formed by internal high-pressure forming in a closed mold, which has a metallic inner layer formed from a metal blank by impressing a forming pressure and a fiber-reinforced outer layer compressed by internal high-pressure forming and compressed with the metal blank ,
  • the subject matter of the invention is based on the idea of combining hydroforming with a resin injection process in order to be able to produce highly resilient hybrid components. By hydroforming complex geometries with free-form surfaces are represented.
  • the outer layer consists of a thermosetting resin system, which cures during hydroforming.
  • the outer layer By acting on the outer layer prior to curing pressure for forming the metal blank, the outer layer can be compacted by discharging excess resin and very high fiber volume contents in the outer layer can be realized. During the curing of the outer layer, a shrinkage process occurs, wherein the shrinkage of the material is greater than any elastic recovery of the metallic inner layer. This results in a solid bond between the metallic inner layer and the polymer outer layer compressed together with the metal blank.
  • the hollow body component according to the invention is distinguished from conventional metallic components, which have been manufactured by hydroforming
  • the inner layer of the hollow body component according to the invention can consist in particular of a non-alloyed or alloyed steel.
  • the outer layer may comprise a polymer matrix of a polyester, vinyl ester, epoxy or phenolic resin.
  • the outer layer has a textile material made of continuous fibers, in particular a textile tube made of continuous fibers as fiber reinforcement.
  • fiber reinforcement tensile fibers come into consideration, which can be processed by textile technology.
  • glass fibers, aramid fibers and carbon fibers are suitable.
  • the invention also provides a method according to claim 7 for the production of the described hollow body component.
  • Advantageous embodiments of the method are described in the dependent claims 8 to 1 2.
  • the method according to the invention is on a metal blank having a conformed to the hollow body component basic shape with an inner surface and an outer surface, a coat of a thermosetting thermosetting resin system and embedded therein reinforcing fibers existing coat applied.
  • the existing of the metal blank and the shell precursor is then converted in a closed form by a force acting on the inner surface of the metal blank forming pressure to the hollow body component.
  • the hollow body component is formed on the one hand and at the same time the composite material between the fiber-reinforced outer layer and the metal
  • thermosetting resin system is accompanied by a shrinkage of the material, wherein the material shrinkage is greater than any elastic recovery of the metallic inner layer.
  • the described effects contribute to an improvement in the bond strength between the metallic part of the hollow body component and the fiber-reinforced outer layer. The effects are particularly effective when the forming pressure is reduced before the resin of the shell cures.
  • a textile material produced from the reinforcing fibers in particular a textile tube knitted or woven from the reinforcing fibers, is applied to the metal blank.
  • a textile tube is particularly advantageous if the metal blank consists of a tubular workpiece.
  • thermosetting resin system into the cavity between the metal blank and the mold used for hydroforming.
  • the sheath can be formed from reinforcing fibers coated with resin or a binder component of a two component reactive resin system.
  • thermosetting resin system is injected into the mold, which fills the cavity between the mold and the workpiece and penetrates into the existing of the reinforcing fibers layer of the workpiece.
  • the mold is equipped with a vent valve, through which excess matrix material can be forced out.
  • the method according to the invention which combines hydroforming of metallic parts with a resin injection process for producing fiber-reinforced layers, it is possible to produce complex hybrid components which have weight advantages over conventional metallic components formed by hydroforming.
  • the method can be used for example for the production of components for the automotive industry, which are characterized by high strength and can be used for safety-related applications.
  • the invention is not limited to this field of application.
  • the parts produced by the process according to the invention can be used wherever components are required, which are characterized by a low weight and high strength. Both the metallic inner layer and the fiber-reinforced polymeric outer layer make a significant contribution to the strength of the hollow body component according to the invention.
  • the wall thickness of the metal blank can be reduced.
  • the hydroforming can be carried out with a lower forming pressure, if one uses for comparison the forming pressure, which would be required for a metallic hollow body component of the same strength.
  • the process according to the invention can be operated more simply and more economically than a conventional hydrofinishing process.

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Composite Materials (AREA)
  • Mechanical Engineering (AREA)
  • Shaping Metal By Deep-Drawing, Or The Like (AREA)
  • Laminated Bodies (AREA)
  • Moulding By Coating Moulds (AREA)

Abstract

L'invention concerne un élément à corps creux, destiné par exemple à des applications concernant la sécurité dans le domaine automobile et fait en un matériau composite mis en forme par hydroformage dans un moule fermé, ce matériau comprenant une couche interne métallique formée par l'action d'une pression appliquée sur une ébauche de métal, et une couche externe polymère, renforcée par des fibres, compactée lors de l'hydroformage et comprimée avec l'ébauche de métal. L'invention concerne également un procédé de fabrication d'un élément à corps creux.
PCT/EP2012/074967 2011-12-09 2012-12-10 Élément à corps creux et procédé de fabrication associé WO2013083842A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102011056202.8A DE102011056202B4 (de) 2011-12-09 2011-12-09 Verfahren zur Herstellung eines Hohlkörperbauteils
DE102011056202.8 2011-12-09

Publications (1)

Publication Number Publication Date
WO2013083842A1 true WO2013083842A1 (fr) 2013-06-13

Family

ID=47326165

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/EP2012/074967 WO2013083842A1 (fr) 2011-12-09 2012-12-10 Élément à corps creux et procédé de fabrication associé

Country Status (2)

Country Link
DE (1) DE102011056202B4 (fr)
WO (1) WO2013083842A1 (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102018218039A1 (de) * 2018-10-22 2020-04-23 Airbus Operations Gmbh Verstärkungselement für ein Strukturprofil, Strukturanordnung, Luft- oder Raumfahrzeug und Verfahren zur Herstellung einer Strukturanordnung
DE102020202464A1 (de) 2020-02-26 2021-08-26 Zf Friedrichshafen Ag Verfahren zum Herstellen eines Fahrwerkbauteils und ein solches Fahrwerkbauteil

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102013020871A1 (de) * 2013-12-11 2015-06-11 Audi Ag Strukturbauteil für ein Kraftfahrzeug
DE102014008649A1 (de) * 2014-06-13 2015-12-17 Hydac Technology Gmbh Verfahren zum Herstellen eines Druckbehälters

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2222653A (en) 1988-09-07 1990-03-14 Ti Corporate Services Hollow tubular structures of fibre reinforced plastics material and method for their production
US6921503B1 (en) * 2002-12-02 2005-07-26 Foam Matrix, Inc. Lost foam molding
EP1609545A2 (fr) 2004-06-24 2005-12-28 Sebring Technology GmbH Méthode et dispositif pur le formage à haute pression interne d'un profilé creux
US20080318714A1 (en) * 2007-06-19 2008-12-25 Stx, Llc Transitioning Lacrosse Stick Handle

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102010063094A1 (de) * 2010-12-15 2012-06-21 Bayerische Motoren Werke Aktiengesellschaft Verfahren zur Herstellung eines materialhybriden Bauteils
DE102011116744A1 (de) * 2011-10-22 2013-04-25 Daimler Ag Halbzeug für ein für ein faserverstärktes Kunststoff-Hybridbauteil und Verfahren zur Herstellung eines faserverstärkten Kunststoff-Hybridbauteils

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2222653A (en) 1988-09-07 1990-03-14 Ti Corporate Services Hollow tubular structures of fibre reinforced plastics material and method for their production
US6921503B1 (en) * 2002-12-02 2005-07-26 Foam Matrix, Inc. Lost foam molding
EP1609545A2 (fr) 2004-06-24 2005-12-28 Sebring Technology GmbH Méthode et dispositif pur le formage à haute pression interne d'un profilé creux
US20080318714A1 (en) * 2007-06-19 2008-12-25 Stx, Llc Transitioning Lacrosse Stick Handle

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102018218039A1 (de) * 2018-10-22 2020-04-23 Airbus Operations Gmbh Verstärkungselement für ein Strukturprofil, Strukturanordnung, Luft- oder Raumfahrzeug und Verfahren zur Herstellung einer Strukturanordnung
US11518488B2 (en) 2018-10-22 2022-12-06 Airbus Operations Gmbh Reinforcing element for a structural profile, structural arrangement, aircraft or spacecraft and method for producing a structural arrangement
DE102020202464A1 (de) 2020-02-26 2021-08-26 Zf Friedrichshafen Ag Verfahren zum Herstellen eines Fahrwerkbauteils und ein solches Fahrwerkbauteil

Also Published As

Publication number Publication date
DE102011056202B4 (de) 2017-11-09
DE102011056202A1 (de) 2013-06-13

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