EP0798062A2 - Elément en mousse métallique - Google Patents

Elément en mousse métallique Download PDF

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Publication number
EP0798062A2
EP0798062A2 EP97105225A EP97105225A EP0798062A2 EP 0798062 A2 EP0798062 A2 EP 0798062A2 EP 97105225 A EP97105225 A EP 97105225A EP 97105225 A EP97105225 A EP 97105225A EP 0798062 A2 EP0798062 A2 EP 0798062A2
Authority
EP
European Patent Office
Prior art keywords
component
semi
finished product
foamed
contour
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.)
Granted
Application number
EP97105225A
Other languages
German (de)
English (en)
Other versions
EP0798062B1 (fr
EP0798062A3 (fr
Inventor
Hans-Wolfgang Seeliger
Winfried Bunsmann
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.)
Wilhelm Karmann GmbH
Original Assignee
Wilhelm Karmann 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 Wilhelm Karmann GmbH filed Critical Wilhelm Karmann GmbH
Publication of EP0798062A2 publication Critical patent/EP0798062A2/fr
Publication of EP0798062A3 publication Critical patent/EP0798062A3/fr
Application granted granted Critical
Publication of EP0798062B1 publication Critical patent/EP0798062B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
    • B22F3/00—Manufacture of workpieces or articles from metallic powder characterised by the manner of compacting or sintering; Apparatus specially adapted therefor ; Presses and furnaces
    • B22F3/10—Sintering only
    • B22F3/11—Making porous workpieces or articles
    • B22F3/1121—Making porous workpieces or articles by using decomposable, meltable or sublimatable fillers
    • B22F3/1125—Making porous workpieces or articles by using decomposable, meltable or sublimatable fillers involving a foaming process
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
    • B22F3/00—Manufacture of workpieces or articles from metallic powder characterised by the manner of compacting or sintering; Apparatus specially adapted therefor ; Presses and furnaces
    • B22F3/10—Sintering only
    • B22F3/11—Making porous workpieces or articles
    • B22F3/1103—Making porous workpieces or articles with particular physical characteristics
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
    • B22F7/00—Manufacture of composite layers, workpieces, or articles, comprising metallic powder, by sintering the powder, with or without compacting wherein at least one part is obtained by sintering or compression
    • B22F7/002—Manufacture of composite layers, workpieces, or articles, comprising metallic powder, by sintering the powder, with or without compacting wherein at least one part is obtained by sintering or compression of porous nature
    • B22F7/004—Manufacture of composite layers, workpieces, or articles, comprising metallic powder, by sintering the powder, with or without compacting wherein at least one part is obtained by sintering or compression of porous nature comprising at least one non-porous part
    • B22F7/006—Manufacture of composite layers, workpieces, or articles, comprising metallic powder, by sintering the powder, with or without compacting wherein at least one part is obtained by sintering or compression of porous nature comprising at least one non-porous part the porous part being obtained by foaming
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
    • B22F2998/00—Supplementary information concerning processes or compositions relating to powder metallurgy
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T29/00—Metal working
    • Y10T29/49—Method of mechanical manufacture
    • Y10T29/49826—Assembling or joining
    • Y10T29/49904—Assembling a subassembly, then assembling with a second subassembly
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T428/00—Stock material or miscellaneous articles
    • Y10T428/12—All metal or with adjacent metals
    • Y10T428/12382—Defined configuration of both thickness and nonthickness surface or angle therebetween [e.g., rounded corners, etc.]
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T428/00—Stock material or miscellaneous articles
    • Y10T428/12—All metal or with adjacent metals
    • Y10T428/1241—Nonplanar uniform thickness or nonlinear uniform diameter [e.g., L-shape]
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T428/00—Stock material or miscellaneous articles
    • Y10T428/12—All metal or with adjacent metals
    • Y10T428/12479—Porous [e.g., foamed, spongy, cracked, etc.]

Definitions

  • the invention relates to a component made of a metallic foam material according to the preamble of claim 1 or claim 2.
  • the invention further relates to a method for the final shaping of a component formed from a substantially flat metallic foam material according to the preamble of claim 6 and devices for carrying out the method .
  • Metallic foam materials that either contain only a foamable layer comprising metal powder and blowing agents or that contain a layer comprising foamable metal powder and blowing agents that is provided with at least one solid metal sheet as a cover layer, whereby there are metallic bonds between the solid metal sheet and the foamable layer known per se.
  • DE 41 01 630 A1 shows how a foam material is formed from a metallic powder and the addition of a gas-releasing blowing agent powder, preferably a metal hydride, which is subjected to a high pressure and high temperature after mixing, which can be done, for example, by a warm Rolling process can be achieved, and then cooled, so that a foamable semi-finished product is formed.
  • a gas-releasing blowing agent powder preferably a metal hydride
  • DE 44 26 627 A1 describes the production of a material with a foamable layer consisting of metal powder and blowing agent, which is at least delimited by a solid metallic cover layer.
  • a connection of the different layers by roll cladding is proposed, whereby a flat layer material is formed which is to be foamed after its final shaping.
  • the invention has for its object to provide metallic lightweight components for a constant dimensional production, Especially in vehicle construction, to create flat foam materials of the type mentioned.
  • the invention provides components with the features of claims 1 or 2 and a manufacturing method according to claim 6 for various starting materials.
  • the component according to the invention solves all the essential geometric requirements that are placed on flat metallic components in body and vehicle construction.
  • the formation of the transition angle between 100 ° and less than 180 ° ensures that the structure of the foamed layer in the area of the transitions is not interrupted, drawn in or thinned, so that the mechanical stability and dimensional accuracy of the component is retained over its entire area.
  • a component according to the invention has a very low mass, at the same time providing high rigidity, in particular in the case of multi-layer composites, so that such components can be used both in the load-bearing area of the body and for cladding and shielding purposes.
  • Integral foam can be used in particular as crash elements, the cellular structure of the foamed material giving it very good energy absorption capacity when the component is deformed. Due to the inventive design of the component, it is possible to deform it so far before it is foamed that it can be used, for example, as the inner layer of a bumper made of z. B. plastic can be used.
  • Components that comprise a foamed metallic layer that is provided on one side with a solid metallic cover layer are suitable for forming very light and highly rigid components, for example a vehicle roof that does not require a stiffening substructure.
  • Materials that have a foamed layer and cladding on both sides with a solid metal sheet are suitable for producing components that have a smooth-walled surface that absorbs tensile and compressive forces on both sides, for example for the rear transverse wall of a vehicle.
  • the foamed layer takes on the function of the spacer and the transmission of the thrust forces.
  • Such a component also has high rigidity and low mass, is suitable for absorbing high energies, for example in the event of an accident, and is also good soundproofing.
  • the foamed layer usually consists of an aluminum-based metal powder with added parts - for example silicon.
  • the mechanical properties of the component can be adjusted by a suitable choice of the alloy elements and proportions.
  • the use of light metal alloys is also suitable for solid metal sheets.
  • a component 1 according to the invention has a foamed layer 2 which comprises a metal powder and a blowing agent which have been homogeneously mixed with one another by a mixing process and then compressed under the action of pressure, for example by axial pressing or by extrusion, to form a compact, foamable semi-finished product 2 '' and has been solidified.
  • the foamed layer 2 is provided on the top and bottom sides with a solid metal sheet 3, 4, which is not mandatory, however, and in particular when a component 1 according to the invention is formed as a crash element. It is also possible to connect a foamed layer 2 with only one solid metal cover layer 3 or 4 or to produce composites from several different foamed layers, possibly separated by solid metal layers, for example to create impact elements in which, depending on the impact speed and thus -energy a different number of foamed layers takes part in the deformation due to the impact.
  • the connection between the layer 2 foamed at the end of the method and the solid metal sheets 3 and 4 has come about under the action of pressure in such a way that a metallic bond between the individual layers 2 ', 3 ', 4' has been reached before the forming and foaming.
  • This flat composite material 6 is first cut into pieces of a suitable size, for example using a saw.
  • the shape 8 used to form the composite material 6 to form the semi-finished product 7 has angles ⁇ transverse to the contact surface of the composite material 6 in a size between approximately 100 ° and 260 °, the edges being rounded, so that the composite material 6 is bent directly to avoid. As a result, the bond is retained even in the angular ranges, and the mechanical strength of the semi-finished product 7 achieved by the shaping has no specific weak points.
  • the shaping can be carried out by known customary shaping measures, for example by deep drawing with and without hold-down devices, as is known in body construction, or by a one-sided shaping method, such as the fluid cell method.
  • a semi-finished product 7 which contains either plane-flat or curved surface areas 7 ′′ and possibly contours 7 ′ formed therefrom and which comprises a foamable layer 2 ′ for further processing.
  • the semifinished product 7 is inserted into a foaming mold 9, one wall 12 of which supports a side 10 of the semifinished product 7 substantially so that this side 10 must already have its final contour, since further contouring by foaming the semifinished product 7 into a component 1 no longer causes deformation of this side 10.
  • the walls 12, 13 of the foaming mold 9 can be made of steel or ceramic, for example. In any case, it is important that the component 1 does not make any connection with the walls 12, 13 of the foaming mold 9, despite its internal pressure prevailing during foaming. In order to prevent any sticking together here, these walls 12, 13 can be coated.
  • the thickness of the component 1 can be preselected - and thus also its density and its mechanical strength. It is thereby achieved that the same starting material can be used for components 1 with completely different properties.
  • Its rigidity can also be adjusted in this way. For example, the different stiffness requirements of a short car roof or a long roof of a station wagon can be met via the degree of foaming.
  • the upper wall 13 of the foaming mold can be omitted if only small demands are made on the dimensional accuracy of the foaming semi-finished product 7, such as in the formation of crash elements.
  • the two opposite walls 12 and 13 of the foaming mold 9 have essentially parallel surface structures, since it is not possible to emboss further structures, for example, only into one surface 11 of the semi-finished product 7, for example through recesses in the delimiting wall 13 of the foaming mold 10th
  • components 1 are obtained as lightweight series products, which can be used, for example, as body panels, as bulkheads or partition walls opposite the engine or trunk or for crash-protecting and stiffening functions within the body.
  • Such components can be curved overall, for example for use as door outer panels, or comprise pronounced contours 1 'worked out from plane or curved areas 1'', which in the area of the transitions with respect to the curved or plane surface area have angles ⁇ of the order of magnitude between 100 ° and less have than 180 °, so that hereby the most diverse requirements for body panels or body panels can be fulfilled - with very light and torsion-resistant components 1.
  • angles ⁇ of the same order of magnitude can occur within the pronounced contours 1 ', so that here too there is maximum flexibility and adaptability to the requirements of the body builder.

Landscapes

  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Mechanical Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Composite Materials (AREA)
  • Materials Engineering (AREA)
  • Laminated Bodies (AREA)
  • Powder Metallurgy (AREA)
  • Body Structure For Vehicles (AREA)
  • Vehicle Interior And Exterior Ornaments, Soundproofing, And Insulation (AREA)
EP97105225A 1996-03-29 1997-03-27 Elément en mousse métallique Expired - Lifetime EP0798062B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19612781A DE19612781C1 (de) 1996-03-29 1996-03-29 Bauteil aus metallischem Schaumwerkstoff, Verfahren zum Endformen dieses Bauteils und Vorrichtung zur Ausführung des Verfahrens
DE19612781 1996-03-29

Publications (3)

Publication Number Publication Date
EP0798062A2 true EP0798062A2 (fr) 1997-10-01
EP0798062A3 EP0798062A3 (fr) 1998-10-07
EP0798062B1 EP0798062B1 (fr) 2001-12-19

Family

ID=7790011

Family Applications (1)

Application Number Title Priority Date Filing Date
EP97105225A Expired - Lifetime EP0798062B1 (fr) 1996-03-29 1997-03-27 Elément en mousse métallique

Country Status (4)

Country Link
US (3) US6090232A (fr)
EP (1) EP0798062B1 (fr)
JP (1) JPH1058575A (fr)
DE (2) DE19612781C1 (fr)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0915007A2 (fr) * 1997-11-07 1999-05-12 DaimlerChrysler AG Structure de carosserie comportant au moins une cloison transversale
DE19905124C1 (de) * 1998-12-23 2000-08-03 Mannesmann Ag Verfahren und Vorrichtung zur Herstellung eines Profilteils
DE19941199A1 (de) * 1999-08-30 2001-03-01 Arved Huebler Verfahren zur Herstellung eines Verbundkörper-Bauteiles sowie Verbundkörper-Bauteil
US6573309B1 (en) 1999-03-03 2003-06-03 Henkel Teroson Gmbh Heat-curable, thermally expandable moulded park
WO2003054069A1 (fr) 2001-12-21 2003-07-03 Henkel Teroson Gmbh Systemes expansibles a base de resine epoxyde modifies avec des polymeres thermoplastiques
US8288447B2 (en) 2006-06-07 2012-10-16 Henkel Ag & Co. Kgaa Foamable compositions based on epoxy resins and polyesters

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US6103341A (en) 1997-12-08 2000-08-15 L&L Products Self-sealing partition
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DE29800005U1 (de) * 1998-01-02 1999-05-06 Wilhelm Karmann GmbH, 49084 Osnabrück Bauteil, insbesondere Karosseriebauteil für Kraftfahrzeuge
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AT408317B (de) * 1998-04-09 2001-10-25 Mepura Metallpulver Verfahren zur herstellung von schaummetall-formkörpern
DE19849600C1 (de) * 1998-10-28 2001-02-22 Schunk Sintermetalltechnik Gmb Verfahren zur Herstellung von einem metallischen Verbundwerkstoff
DE19852277C2 (de) * 1998-11-13 2000-12-14 Schunk Sintermetalltechnik Gmb Verfahren zur Herstellung eines metallischen Verbundwerkstoffes sowie Halbzeug für einen solchen
DE19854173C2 (de) * 1998-11-24 2000-11-23 Fritz Michael Streuber Metallschaumformkörper
DE19854175C1 (de) * 1998-11-24 2000-03-23 Fritz Michael Streuber Metallschaumfügeverfahren
DE19908867A1 (de) * 1999-03-01 2000-09-07 Arved Huebler Verbundkörper sowie Verfahren zum Herstellen eines Verbundkörpers
DE19911213C1 (de) * 1999-03-12 2000-11-09 Zf Lemfoerder Metallwaren Ag Verbundbauteil und Verfahren zur Herstellung des Verbundbauteiles
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US6358584B1 (en) 1999-10-27 2002-03-19 L&L Products Tube reinforcement with deflecting wings and structural foam
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US6467834B1 (en) 2000-02-11 2002-10-22 L&L Products Structural reinforcement system for automotive vehicles
NO311708B1 (no) * 2000-02-25 2002-01-14 Cymat Corp Fremgangsmåte og utstyr for tildannelse av stöpte produkter
US6296298B1 (en) 2000-03-14 2001-10-02 L&L Products, Inc. Structural reinforcement member for wheel well
US6482486B1 (en) 2000-03-14 2002-11-19 L&L Products Heat activated reinforcing sleeve
US6422575B1 (en) 2000-03-14 2002-07-23 L&L Products, Inc. Expandable pre-formed plug
US6321793B1 (en) 2000-06-12 2001-11-27 L&L Products Bladder system for reinforcing a portion of a longitudinal structure
US6820923B1 (en) 2000-08-03 2004-11-23 L&L Products Sound absorption system for automotive vehicles
US6561571B1 (en) 2000-09-29 2003-05-13 L&L Products, Inc. Structurally enhanced attachment of a reinforcing member
US6471285B1 (en) 2000-09-29 2002-10-29 L&L Products, Inc. Hydroform structural reinforcement system
CA2344088A1 (fr) * 2001-01-16 2002-07-16 Unknown Methode et appareil pour la production d'une mousse metallique
US6706239B2 (en) 2001-02-05 2004-03-16 Porvair Plc Method of co-forming metal foam articles and the articles formed by the method thereof
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US6660224B2 (en) * 2001-08-16 2003-12-09 National Research Council Of Canada Method of making open cell material
ATE320872T1 (de) * 2001-08-17 2006-04-15 Cymat Corp Verfahren zum niederdruckgiessen von metallschaum
ATE307218T1 (de) * 2002-02-01 2005-11-15 Cymat Corp Verfahren zur herstellung von metallschaum und eine vorrichtung zu deren durchführung
CA2477121C (fr) * 2002-03-04 2011-03-01 Cymat Corp. Turbine etanche pour la production de mousse metallique, systeme et procede a cet effet
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AT412876B (de) * 2003-08-05 2005-08-25 Arc Leichtmetallkompetenzzentrum Ranshofen Gmbh Schäumbares halbzeug und verfahren zur herstellung von metallteilen mit innerer porosität
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US7328831B1 (en) 2004-06-25 2008-02-12 Porvair Plc Method of making a brazed metal article and the article formed thereby
JP4051052B2 (ja) * 2004-07-09 2008-02-20 本田技研工業株式会社 車両のボンネットフード構造
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DE102004038932A1 (de) * 2004-08-11 2006-02-23 Mtu Aero Engines Gmbh Verfahren zum Verbinden von Bauteilen
DE102004040888A1 (de) * 2004-08-24 2006-04-13 Wilhelm Karmann Gmbh Herstellung von Bauteilen mit zumindest einer metallischen Schaumlage
DE102004054961A1 (de) * 2004-11-13 2006-05-18 Wilhelm Karmann Gmbh Vorrichtung zum Aufschäumen von metallischen Halbzeugen mit zumindest einer aufschäumbaren Lage
DE102005005041A1 (de) * 2005-02-03 2006-08-10 Märkisches Werk GmbH Ventil zur Steuerung des Gasaustauschs, insbesondere bei Verbrennungsmotoren
DE202005006240U1 (de) * 2005-04-18 2005-10-20 Seeliger, Hans-Wolfgang Metallschaum-Sandwichs
DE102005032098B4 (de) * 2005-07-08 2012-09-06 Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V. Verfahren und Vorrichtung zur Herstellung von Metallschaum-Verbundkörpern und Metallschaum-Verbundhohlkörper
US20070154731A1 (en) * 2005-12-29 2007-07-05 Serguei Vatchiants Aluminum-based composite materials and methods of preparation thereof
DE102006020860B4 (de) * 2006-05-04 2008-02-07 Alulight International Gmbh Verfahren zur Herstellung von Verbundkörpern sowie danach hergestellte Verbundkörper
US9403213B2 (en) * 2006-11-13 2016-08-02 Howmedica Osteonics Corp. Preparation of formed orthopedic articles
US10539041B2 (en) 2013-10-22 2020-01-21 General Electric Company Cooled article and method of forming a cooled article
CN103831979B (zh) * 2014-03-11 2016-02-10 哈尔滨理工大学 一种陶瓷基波纹夹芯结构复合材料的制备模具
CN104177110B (zh) * 2014-08-28 2016-01-20 哈尔滨理工大学 波纹构型陶瓷基复合材料平板的制备方法
FR3067270B1 (fr) * 2017-06-13 2021-12-24 Safran Procede de realisation d'une piece metallique par deliantage et frittage

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EP0915007A2 (fr) * 1997-11-07 1999-05-12 DaimlerChrysler AG Structure de carosserie comportant au moins une cloison transversale
EP0915007A3 (fr) * 1997-11-07 2000-09-13 DaimlerChrysler AG Structure de carosserie comportant au moins une cloison transversale
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US8288447B2 (en) 2006-06-07 2012-10-16 Henkel Ag & Co. Kgaa Foamable compositions based on epoxy resins and polyesters

Also Published As

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US6090232A (en) 2000-07-18
EP0798062B1 (fr) 2001-12-19
JPH1058575A (ja) 1998-03-03
DE19612781C1 (de) 1997-08-21
US6094798A (en) 2000-08-01
US20010023027A1 (en) 2001-09-20
EP0798062A3 (fr) 1998-10-07
DE59705836D1 (de) 2002-01-31

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