EP1085956B1 - Procede de production de corps composites en metal expanse - Google Patents

Procede de production de corps composites en metal expanse Download PDF

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Publication number
EP1085956B1
EP1085956B1 EP99912961A EP99912961A EP1085956B1 EP 1085956 B1 EP1085956 B1 EP 1085956B1 EP 99912961 A EP99912961 A EP 99912961A EP 99912961 A EP99912961 A EP 99912961A EP 1085956 B1 EP1085956 B1 EP 1085956B1
Authority
EP
European Patent Office
Prior art keywords
foam
metal
foaming
metallic foam
semi
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.)
Expired - Lifetime
Application number
EP99912961A
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German (de)
English (en)
Other versions
EP1085956A1 (fr
Inventor
Frantisèk SIMANC IK
Helmut WÖRZ
Eric Wolfsgruber
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.)
Alulight International GmbH
Original Assignee
Alulight International 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 Alulight International GmbH filed Critical Alulight International GmbH
Priority to AT99912961T priority Critical patent/ATE251001T1/de
Priority to EP03000266A priority patent/EP1352696A3/fr
Publication of EP1085956A1 publication Critical patent/EP1085956A1/fr
Application granted granted Critical
Publication of EP1085956B1 publication Critical patent/EP1085956B1/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
    • 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
    • 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
    • B22F2998/00—Supplementary information concerning processes or compositions relating to powder metallurgy
    • 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
    • B22F2999/00—Aspects linked to processes or compositions used in 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
    • Y10T428/12479—Porous [e.g., foamed, spongy, cracked, etc.]

Definitions

  • the present invention relates generally to novel foam metal moldings.
  • the powder metallurgical starting material is in one heated chamber heated outside a foam mold and ready for foaming brought, after which the quantity matched to the volume capacity of the mold Metal foam in its entirety is pressed into the mold, one relative in itself complex technology.
  • US Pat. No. 3,087,807 A describes a method according to which one of the desired final shape of the finished foam metal body in its shape appropriately shaped semifinished product is placed in a hollow shell and heated there is foamed.
  • the individual metal foam molded body is on its own alone is not yet functional and it, e.g. in the case of noise protection components, Wall panels or the like, requires any brackets or e.g. cavities Openings or the like which should e.g. for mounting brackets, connections and / or Connecting elements are provided.
  • foam metal composite components e.g. Sandwich components, e.g. with lower and upper, solid cover plate and metal foam structure in between
  • a Metal powder / blowing agent powder mixture was introduced between the two sheets and that then e.g. by rolling, pressing or the like.
  • an essentially compact preform or Semi-finished body with outer cover layers is produced, which at elevated temperature e.g. is foamed in a mold, e.g. then the floor pan stays in place and the cover plate is "lifted" into a final position by the developing metal foam becomes.
  • the disadvantage of this technology given here as an example, is that it is a exact final positioning of the sheets can be achieved only with difficulty.
  • the invention has set itself the task of creating a method in which a subsequent attachment of components, holding elements, as described above, Cavities, recesses or the like. essentially unnecessary.
  • the new procedure should furthermore the use of costly raw material, e.g. of how Semi-finished product described above based on a compact Spare metal powder / blowing agent / cover sheet composite and with foam metal products guide integrated or integrated elements with precisely controllable end positioning.
  • the invention thus relates to a method according to claim 1.
  • the essence of the invention is, in particular, that the foaming process not only serves to form the metal foam itself, but that the developing one Metal foam is in situ and integral with the structural elements, of what type you are now individual are, connects. Subsequent material weaknesses, e.g. by Drilling holes, threads or the like. for the attachment of functional parts, Holding elements or the like. can be avoided and it is due to the in-situ foaming of the Structural elements whose integration and anchoring in the finished metal foam body in optimal extent reached.
  • the single structural element to be absorbed by the developing metal foam can from the foam entirely surrounded, e.g. for a modification of the foam structure by the Structural elements is taken care of.
  • Reinforcement elements e.g. Rods, wires, nets or the like
  • the metal foam can only do that Anchoring area or the like a functional component, e.g. a fastener, enclose, the actual functional area, for example, the surface of the Towering over the metal foam body, emerging from it or the like.
  • the at least one structure can be made according to claim 2 with a material that reacts little or not at all with the metal foam.
  • the structural elements to be integrated into the foam can e.g. by pouring, Continuous casting, extrusion, extrusion, rolling or the like. be made.
  • the insert components e.g. have particularly high technological requirements should be sufficient, e.g. high hardness, abrasion resistance, chem. Durability or the like should also have the use of Solid bodies or components made of powder technology, compacted, e.g. sintered, material possible.
  • Structural elements made of materials are preferred Melting temperatures which are above the melting temperature of the metal to be foamed Basic body, used, intended.
  • the process according to the invention has the essential advantage that it leads to for the first time an actually exact final positioning of the structural elements to the desired ones Possibility of placing the foam body in an angular or spatial position.
  • Claim 4 is a first preferred method variant remove the one that is used for exact positioning of the solid parts Holding elements in the foam matrix, so to speak, "rise” or the like, that is, they are real in the same can be integrated into the material.
  • Structural elements in whatever form they are present, are preferred with a higher melting temperature than that of the matrix metal forming the foam.
  • the invention is in no way limited to “full” solid bodies, but rather can also, as the claim 5 shows, the installation of hollow structural elements, i.e. hollow bodies, but with practically massive ones Conversion.
  • Metal foam bodies can be used with externally accessible or e.g. they also penetrating recesses, cavities or the like. be created what on the one hand subsequent introduction of such empty spaces saved, but on the other hand has the advantage that the hollow body forming the boundary of the empty spaces there together with the surrounding and integrating metal foam a significant mechanical reinforcement bring.
  • a foamable is semi-finished product obtained by powder metallurgy.
  • a foamable is semi-finished product obtained by powder metallurgy.
  • Powder mixture made of aluminum or an aluminum alloy, mixed homogeneously with a blowing agent - preferably titanium hydride - and optionally other powdery ones
  • Additives that are on a compacting, e.g. a conforming system, by pressing, Extrusion, rolling or in a comparable way to a piece goods, that is to say rods, Plates, profiles or the like
  • Semi-finished forms is compacted, usually a density of the like available semi-finished goods is achieved, which is preferably about 95% of theoretical Density of the metal matrix is.
  • Sandwich panels with one or two sides are known Cover plates, foils or the like, which were roll-plated in a first step, in the end these cover plates with the matrix metal of the foamable semi-finished product connect, contour this layer composite if necessary and then through Heating to the melting temperature of the foamable semi-finished product Form foam body, which is then finally with the metal cover plates connects materially, see e.g. DE 196 12 781 C1.
  • FIG. 1 shows particularly preferred forms of profiles of the to be used, by compacting Foamable semi-finished product made of metal and blowing agent powder; 2 that Scheme of a mat formed with the aforementioned semi-finished bodies.
  • FIG. 1 shows three particularly preferred within the scope of the present invention
  • Forms of foamable semi-finished bodies to be used according to the invention 60 in Oblique view, etc. one with a flat rectangular shape, one with more than semicircular and one with a square cross section.
  • At least one of the Side surfaces, designated 601 in the drawing are substantially flat and flat other surfaces can have any shape, e.g. domed or otherwise shaped his.
  • the advantage of the flat surfaces 601 is that the semi-finished bodies 60 have a large surface contact lie on the bottom of a mold or on a sandwich sheet stored there can, which increases the risk of relocation or slipping when moving or manipulation of the mold is significantly reduced.
  • Another major advantage is that also an improvement in the heat transfer from the mold bottom in the semi-finished product 60 is reached through this flat surface 601.
  • FIG. 2 shows a further, particularly preferred possibility, an undesirable one Displacement of the semi-finished body 60 both in the mold and mutually prevent.
  • a sectional view shows how the semi-finished product body 60 is also flatter here Underside 601 by means of threads, wires 605 or the like, e.g. from the same material as that Foamable matrix metal, woven into a kind of mat 600, which is essential for Stabilization of the arrangement in the mold contributes.
  • Retaining wires 605 can be made from metal compatible with the matrix metal or from one at the temperature of the heating and foaming to be burned decomposing or otherwise destructible material.

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  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Mechanical Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Composite Materials (AREA)
  • Materials Engineering (AREA)
  • Powder Metallurgy (AREA)
  • Laminated Bodies (AREA)
  • Manufacture Of Alloys Or Alloy Compounds (AREA)

Abstract

L'invention concerne la production de corps moulés ou équivalent en métal expansé à base d'aluminium ou d'autres métaux. Des corps semi-finis ou équivalent en matière de semi-produit expansible, obtenue par compression d'un mélange contenant au moins poudre métallique matrice et au moins un gaz propulseur libérant un gaz de moussage, sont introduits dans une coquille de moussage (100) ou équivalent où ils sont disposés dans la disposition géométrique souhaitée et chauffés à une température située dans le domaine de la température du fusion du métal-matrice. Au terme du remplissage de la coquille citée, l'opération de moussage est terminée. Les corps moulés en métal expansé sont alors démoulés. L'invention est caractérisée en ce qu'au moins un corps semi-fini expansible et compacté est introduit dans la coquille de moussage avec au moins une structure ou un composant fonctionnel (671) ou équivalent constitué(e) d'un matériau non expansible à la température de fusion du métal-matrice. Le corps est maintenu dans la position souhaitée dans la coquille. Ensuite, on procède au chauffage pour obtenir la mousse métallique (600) qui lie par contact ou enveloppe la structure ou le composant fonctionnel dans le moule correspondant à l'intérieur de la coquille. Le métal de la mousse métallique formée est amené totalement ou partiellement en contact avec la structure ou le composant fonctionnel. Après refroidissement, le corps moulé composite ainsi obtenu, comprenant la structure ou le composant fonctionnel lié solidement dans la mousse métallique, est démoulé.

Claims (5)

  1. Procédé pour fabriquer des corps moulés composites comportant de la mousse métallique et des structures liées rigidement à celle-ci et entourées au moins partiellement par la mousse, choisies à partir du groupe constitué d'éléments d'armature, de barres, de fils métalliques, de réseaux, de câbles, de barrettes, d'éléments de fixation ayant une zone fonctionnelle en saillie, de corps en nid d'abeilles, de profilés, de corps creux présentant des espaces vides dans la mousse métallique, de douilles, de tiges filetées, d'éléments d'ancrage, comprenant les étapes:
    mettre en place au moins un corps semi-fini compacté fabriqué à partir de poudre métallurgique susceptible d'expansion, et
    de plus, sans l'étape intermédiaire d'une fixation par laminage ou d'un compactage en un produit semi-fini composite d'au moins une structure susceptible d'expansion pour la température d'expansion de la mousse métallique dans une lingotière pour mousse et maintien de la structure dans la position finale exacte, ensuite
    chauffer à une température dans la plage de la température de fusion de la mousse métallique en réalisant l'expansion du corps semi-fini et en liant de façon intégrale la structure noyée au moins partiellement dans la mousse métallique, et
    refroidir les corps moulés composites ainsi obtenus comportant de la mousse métallique et des structures rigidement liées dans celle-ci, et
    démouler ceux-ci.
  2. Procédé selon la revendication 1,
    caractérisé en ce que la structure est fabriquée en une matière réagissant peu ou pas avec la mousse métallique.
  3. Procédé selon la revendication 1 ou 2,
    caractérisé en ce que la structure est une matière massive dont la température de fusion ou le début de fusion est d'au moins 10° K, avantageusement d'au moins 50° K, au-dessus de la température de fusion de la mousse métallique.
  4. Procédé selon une des revendications 1 à 3,
    caractérisé en ce que le maintien de la structure dans la position finale exacte dans la lingotière est effectué par des éléments de maintien déformables.
  5. Procédé selon une des revendications 1 à 4,
    caractérisé en ce que, par la mise en place d'au moins une structure présentant une forme creuse fermée ou ouverte dans la lingotière pour mousse, des zones volumiques dépourvues de mousse métallique sont formées dans le corps moulé composite.
EP99912961A 1998-04-09 1999-04-09 Procede de production de corps composites en metal expanse Expired - Lifetime EP1085956B1 (fr)

Priority Applications (2)

Application Number Priority Date Filing Date Title
AT99912961T ATE251001T1 (de) 1998-04-09 1999-04-09 Verfahren zur herstellung von schaummetall- verbundformkörpern
EP03000266A EP1352696A3 (fr) 1998-04-09 1999-04-09 Procédé de production de corps composites en metal expanse

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
AT62598 1998-04-09
AT0062598A AT408317B (de) 1998-04-09 1998-04-09 Verfahren zur herstellung von schaummetall-formkörpern
PCT/AT1999/000091 WO1999052661A1 (fr) 1998-04-09 1999-04-09 Procede de production de corps moules et corps moules en metal expanse

Related Child Applications (1)

Application Number Title Priority Date Filing Date
EP03000266A Division EP1352696A3 (fr) 1998-04-09 1999-04-09 Procédé de production de corps composites en metal expanse

Publications (2)

Publication Number Publication Date
EP1085956A1 EP1085956A1 (fr) 2001-03-28
EP1085956B1 true EP1085956B1 (fr) 2003-10-01

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Family Applications (2)

Application Number Title Priority Date Filing Date
EP99912961A Expired - Lifetime EP1085956B1 (fr) 1998-04-09 1999-04-09 Procede de production de corps composites en metal expanse
EP03000266A Withdrawn EP1352696A3 (fr) 1998-04-09 1999-04-09 Procédé de production de corps composites en metal expanse

Family Applications After (1)

Application Number Title Priority Date Filing Date
EP03000266A Withdrawn EP1352696A3 (fr) 1998-04-09 1999-04-09 Procédé de production de corps composites en metal expanse

Country Status (9)

Country Link
US (2) US6391250B1 (fr)
EP (2) EP1085956B1 (fr)
JP (1) JP2002511526A (fr)
AT (1) AT408317B (fr)
AU (1) AU3126699A (fr)
CA (1) CA2326784C (fr)
DE (1) DE59907205D1 (fr)
ES (1) ES2209413T3 (fr)
WO (1) WO1999052661A1 (fr)

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DE102017121511A1 (de) 2017-09-15 2019-03-21 Pohltec Metalfoam Gmbh Verfahren zur Herstellung eines Halbzeuges für einen Verbundwerkstoff
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DE102006004622A1 (de) * 2006-02-01 2007-08-09 Alulight International Gmbh Kontinuierliches Strangpressverfahren
DE102006004622B4 (de) * 2006-02-01 2008-11-13 Alulight International Gmbh Kontinuierliches Strangpressverfahren
DE102015114500A1 (de) * 2015-06-03 2016-12-08 HAVEL metal foam GmbH Verfahren und Vorrichtung zur Herstellung von Metallschaumverbundkörpern und Metallschaumverbundkörper

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AT408317B (de) 2001-10-25
EP1352696A2 (fr) 2003-10-15
JP2002511526A (ja) 2002-04-16
AU3126699A (en) 1999-11-01
CA2326784C (fr) 2009-12-22
US20020127425A1 (en) 2002-09-12
EP1352696A3 (fr) 2005-04-27
CA2326784A1 (fr) 1999-10-21
EP1085956A1 (fr) 2001-03-28
US6391250B1 (en) 2002-05-21
ATA62598A (de) 2001-03-15
DE59907205D1 (de) 2003-11-06
ES2209413T3 (es) 2004-06-16
WO1999052661A1 (fr) 1999-10-21

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