EP1079948A1 - Piece composite contenant de la mousse metallique, et son procede de production - Google Patents

Piece composite contenant de la mousse metallique, et son procede de production

Info

Publication number
EP1079948A1
EP1079948A1 EP00915140A EP00915140A EP1079948A1 EP 1079948 A1 EP1079948 A1 EP 1079948A1 EP 00915140 A EP00915140 A EP 00915140A EP 00915140 A EP00915140 A EP 00915140A EP 1079948 A1 EP1079948 A1 EP 1079948A1
Authority
EP
European Patent Office
Prior art keywords
metal
metal powder
parts
powder layer
sheet
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
EP00915140A
Other languages
German (de)
English (en)
Other versions
EP1079948B1 (fr
Inventor
Olaf Abels
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.)
ZF Lemfoerder GmbH
Original Assignee
ZF Lemfoerder 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 ZF Lemfoerder GmbH filed Critical ZF Lemfoerder GmbH
Publication of EP1079948A1 publication Critical patent/EP1079948A1/fr
Application granted granted Critical
Publication of EP1079948B1 publication Critical patent/EP1079948B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

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
    • B22F3/1103—Making porous workpieces or articles with particular physical characteristics
    • B22F3/1118—Making porous workpieces or articles with particular physical characteristics comprising internal reinforcements
    • 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
    • Y10T428/00—Stock material or miscellaneous articles
    • Y10T428/12—All metal or with adjacent metals
    • Y10T428/12014—All metal or with adjacent metals having metal particles
    • Y10T428/12028—Composite; i.e., plural, adjacent, spatially distinct metal components [e.g., layers, etc.]
    • Y10T428/12042—Porous component
    • 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
    • Y10T428/12014—All metal or with adjacent metals having metal particles
    • Y10T428/12028—Composite; i.e., plural, adjacent, spatially distinct metal components [e.g., layers, etc.]
    • Y10T428/12063—Nonparticulate metal component
    • Y10T428/12069—Plural nonparticulate metal components
    • 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
    • Y10T428/12014—All metal or with adjacent metals having metal particles
    • Y10T428/12028—Composite; i.e., plural, adjacent, spatially distinct metal components [e.g., layers, etc.]
    • Y10T428/12063—Nonparticulate metal component
    • Y10T428/12097—Nonparticulate component encloses particles
    • 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
    • Y10T428/12014—All metal or with adjacent metals having metal particles
    • Y10T428/12153—Interconnected void structure [e.g., permeable, 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
    • Y10T428/12479—Porous [e.g., foamed, spongy, cracked, 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
    • Y10T428/12493—Composite; i.e., plural, adjacent, spatially distinct metal components [e.g., layers, joint, etc.]
    • Y10T428/12736—Al-base component

Definitions

  • the invention relates to a composite component which consists of at least two opposing solid metal sheet metal parts and a metal powder layer to be foamed which is arranged between the sheet metal parts, and to a method for producing the composite component.
  • Nerbund components of the type described at the outset are used in various industrial areas and in particular in automotive engineering, since they have a relatively low mass with high rigidity.
  • a Nerbund semifinished product is produced from solid metal sheet metal parts and the metal powder layer, for example by a roll cladding process.
  • the rolling process brings about a metallic bond between the central metal powder layer and the inner sides of the solid metal sheet metal plate parts covering this metal powder layer.
  • the sandwich-like plate material can pass through
  • manufacturing processes are known in the prior art, in which metal powder is foamed in a corresponding form and the semi-finished product thus produced is later introduced into a casting mold and then, for example by die casting, is finished to form a non-composite component with a foam core and an external, solid metal shell.
  • a manufacturing method is known for example from DE 195 01 508 Cl.
  • the technical problem of the present invention is therefore to further develop a composite component of the generic type in such a way that the increased requirements, in particular in automotive vehicle technology, with regard to increased rigidity with a reduced component weight, and to provide a method for its production.
  • Composite component in individual cross-sectional areas has additional stiffening elements which are positively connected to the surrounding foamed metal powder layer, which in turn is non-destructively and inseparably connected to the external solid metal sheet metal parts.
  • This special design makes it possible for the first time to optimally adapt the resistive moments that counteract these to the particular stresses occurring within chassis components. This can be done on the one hand by the different design of the internal stiffening elements, for example by making them from square profiles, flat materials or U-profiles. In addition, it is possible to adjust the stiffening elements in their material selection accordingly, so that, for example, materials such as titanium or the like can also be used in the stiffening elements under the highest loads.
  • the manufacturing process is characterized by the sequence of simple and inexpensive process steps.
  • the method for producing a composite component which at least according to the features of claim 1 for implementation requires two sheet metal parts lying opposite one another and a foamable metal powder layer arranged between the sheet metal parts, described by the process steps that a solid metal sheet part is provided with a metal powder layer, then the two sheet metal parts with their side provided with the metal powder layer are arranged one above the other and finally the sheet metal parts lying one above the other are heated by supplying heat in such a way that the supply of heat causes a foaming process in the mutually facing metal powder layers, which causes an inseparable connection of the metal powder layers.
  • this method makes it possible to arrange additional stiffening elements in the form of sheet metal molded parts or profiles between them in certain partial areas of the composite component before the heating process of the sheet metal parts lying on top of one another, which in the subsequent foaming process is inseparable and non-destructively from the foamed one
  • Metal layer powder are connected.
  • the result is a composite component which is equipped with a particularly high section modulus in some areas and which can be produced particularly inexpensively.
  • FIG. 1 shows a cross-sectional view through a motor vehicle wishbone as an example of a composite component according to the invention
  • Figure 2 shows sectional views along the line A-A and B-B of Figure 1 and
  • FIG. 3 shows an enlarged detailed view of the detail X from FIG. 1.
  • the composite component designated in its entirety by 1, has two supporting tubes 2 and 3.
  • the supporting tubes 2 and 3 are connected to one another by an upper cover plate 4 and a lower cover plate 5. There is one on each of the inner sides of the cover plates 4 and 5 facing the supporting tubes 2 and 3
  • Metal powder layers lie one on top of the other and the metal powder layers 6 and 7 in the interior of the connecting web 8 completely enclose the connecting rod 9.
  • the lower cover plate 5 and the upper cover plate 4 are coated with a metal powder layer 6 and 7, respectively.
  • This coating is usually done by a rolling process, in the context of which a firm connection between the
  • the metal powder layer and the cover plate is made.
  • the metal powder layer can consist, for example, of aluminum powder with a corresponding blowing agent, for example titanium hydride (TiH 2 ).
  • TiH 2 titanium hydride
  • the cover plates 4 and 5 are provided with the contour shown in FIG. 1 in a forming process. This contour is characterized in that it has two areas 10 and 11 for receiving the supporting tubes 2 and 3 and an area in between for receiving the connecting rod 9. If the upper cover plate 4 and the lower cover plate 5 are placed one on top of the other, there are cavities for receiving the corresponding pipes 2 and 3 and the connecting rod 9. The folding together of the individual components of the composite component forms a further process step in the production process.
  • the composite component 1 is then heated, for example in an oven, to a temperature required for the foaming of the metal powder layer, which can reach values which are just below the melting temperature of the cover sheets. Temperatures between about 600 ° C and 800 ° C are possible.
  • the blowing agent contained in the metal powder layers releases gases which are similar to foaming polyurethane foam and which let the aluminum powder mixture foam.
  • Connection linkage 9 brought about AlMgSil, for example, can be used as the material for the cover plates.
  • FIG. 3 shows an enlarged view that the metal powder layer completely fills the cavities between the cover plates 4 and 5 and the inner stiffening components 2, 3 and 9. At the same time it becomes a fixed one Connection in the form of an adhesive in the outer regions of the cover plates 4 and 5 at the points at which the metal powder layers 6 and 7 lie directly on one another.
  • the result is a compact chassis component which is optimally adapted to the framework conditions with regard to strength and lightness and which is characterized by simple and inexpensive manufacture.
  • the metal foam also has the ability to absorb more energy due to its porosity. This can be advantageous for the deformation behavior of composite components according to the invention, for example in the event of a crash.

Landscapes

  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Mechanical Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Composite Materials (AREA)
  • Materials Engineering (AREA)
  • Laminated Bodies (AREA)
  • Body Structure For Vehicles (AREA)
  • Powder Metallurgy (AREA)

Abstract

L'invention concerne une pièce composite (1) qui est constituée d'au moins deux parties en tôle (4, 5) superposées, en métal massif, et d'une couche d'une poudre métallique à faire mousser, placée entre les deux parties en tôle. Dans diverses zones de section se trouvent des éléments de rigidification (9) complémentaires qui sont reliés par liaison de forme à la couche de poudre métallique moussée (6, 7) qui les entoure et qui est elle-même reliée, de façon non séparable sans endommagement, aux parties en tôle en métal massif se trouvant à l'extérieur. L'invention concerne en outre un procédé permettant de produire ladite pièce composite, selon lequel chaque partie en tôle (4, 5) en métal massif est pourvue d'une couche de poudre métallique (6, 7), les deux parties en tôle (4, 5) sont ensuite placées l'une sur l'autre de façon que leurs côtés pourvus de la couche de poudre métallique (6, 7) soient en vis-à-vis, les parties en tôle superposées étant alors chauffées par apport de chaleur de telle sorte qu'une liaison ne pouvant pas être défaite sans endommagement est réalisée entre les couches de poudre métallique (6, 7) en vis-à-vis, par un processus de moussage dépendant de la chaleur.
EP00915140A 1999-03-12 2000-03-07 Piece composite contenant de la mousse metallique Expired - Lifetime EP1079948B1 (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE19911213 1999-03-12
DE19911213A DE19911213C1 (de) 1999-03-12 1999-03-12 Verbundbauteil und Verfahren zur Herstellung des Verbundbauteiles
PCT/DE2000/000670 WO2000054911A1 (fr) 1999-03-12 2000-03-07 Piece composite contenant de la mousse metallique, et son procede de production

Publications (2)

Publication Number Publication Date
EP1079948A1 true EP1079948A1 (fr) 2001-03-07
EP1079948B1 EP1079948B1 (fr) 2005-05-11

Family

ID=7900844

Family Applications (1)

Application Number Title Priority Date Filing Date
EP00915140A Expired - Lifetime EP1079948B1 (fr) 1999-03-12 2000-03-07 Piece composite contenant de la mousse metallique

Country Status (5)

Country Link
US (1) US6444330B1 (fr)
EP (1) EP1079948B1 (fr)
DE (1) DE19911213C1 (fr)
ES (1) ES2240077T3 (fr)
WO (1) WO2000054911A1 (fr)

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AT406649B (de) * 1996-05-02 2000-07-25 Mepura Metallpulver Verfahren zur herstellung von porösen matrixmaterialien, insbesondere formkörpern, auf basis von metallen, und von halbzeug dafür
DE10143557A1 (de) * 2001-09-06 2003-04-03 Daimler Chrysler Ag Verfahren zur Herstellung eines Strukturelementes
US7100259B2 (en) * 2003-12-17 2006-09-05 General Motors Corporation Method of metallic sandwiched foam composite forming
DE102006009122A1 (de) * 2006-02-24 2007-09-06 Brandenburgische Technische Universität Cottbus Verfahren zur Herstellung dreidimensionaler, einen Metallschaum enthaltender Schichtkörper
DE102007006156B3 (de) * 2007-02-07 2008-06-26 Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V. Verfahren zur Herstellung eines Verbundkörpers und Zwischenprodukt zur Herstellung eines Verbundkörpers
DE102009007901B4 (de) * 2009-02-06 2012-11-22 Benteler Automobiltechnik Gmbh Verfahren zur Herstellung eines Kraftfahrzeugbauteils und Kraftfahrzeugbauteil
US9468118B1 (en) * 2013-12-20 2016-10-11 Amazon Technologies, Inc. Reinforced structural composite

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4426627C2 (de) 1993-07-29 1997-09-25 Fraunhofer Ges Forschung Verfahren zur Herstellung eines metallischen Verbundwerkstoffes
WO1995018350A1 (fr) 1993-12-27 1995-07-06 Hitachi Chemical Company, Ltd. Materiau de transmission de chaleur
DE19501508C1 (de) * 1995-01-19 1996-04-25 Lemfoerder Metallwaren Ag Bauteil für das Fahrwerk eines Kraftfahrzeuges und Verfahren zur Herstellung eines solchen Bauteils
US5564064A (en) * 1995-02-03 1996-10-08 Mcdonnell Douglas Corporation Integral porous-core metal bodies and in situ method of manufacture thereof
DE19612781C1 (de) * 1996-03-29 1997-08-21 Karmann Gmbh W Bauteil aus metallischem Schaumwerkstoff, Verfahren zum Endformen dieses Bauteils und Vorrichtung zur Ausführung des Verfahrens
US6085965A (en) * 1997-02-04 2000-07-11 Mcdonnel & Douglas Corporation Pressure bonding and densification process for manufacturing low density core metal parts
AT408317B (de) * 1998-04-09 2001-10-25 Mepura Metallpulver Verfahren zur herstellung von schaummetall-formkörpern
US5972521A (en) * 1998-10-01 1999-10-26 Mcdonnell Douglas Corporation Expanded metal structure and method of making same

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See references of WO0054911A1 *

Also Published As

Publication number Publication date
EP1079948B1 (fr) 2005-05-11
ES2240077T3 (es) 2005-10-16
US6444330B1 (en) 2002-09-03
DE19911213C1 (de) 2000-11-09
WO2000054911A1 (fr) 2000-09-21

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