WO2006111349A1 - Structures sandwich en mousse metallique et procede pour leur modelage - Google Patents

Structures sandwich en mousse metallique et procede pour leur modelage Download PDF

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Publication number
WO2006111349A1
WO2006111349A1 PCT/EP2006/003524 EP2006003524W WO2006111349A1 WO 2006111349 A1 WO2006111349 A1 WO 2006111349A1 EP 2006003524 W EP2006003524 W EP 2006003524W WO 2006111349 A1 WO2006111349 A1 WO 2006111349A1
Authority
WO
WIPO (PCT)
Prior art keywords
metal foam
shaping
core
forming
temperature
Prior art date
Application number
PCT/EP2006/003524
Other languages
German (de)
English (en)
Inventor
Hans-Wolfgang Seeliger
Dirk Schwingel
Original Assignee
Alm 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 Alm Gmbh filed Critical Alm Gmbh
Publication of WO2006111349A1 publication Critical patent/WO2006111349A1/fr

Links

Classifications

    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04C—STRUCTURAL ELEMENTS; BUILDING MATERIALS
    • E04C2/00—Building elements of relatively thin form for the construction of parts of buildings, e.g. sheet materials, slabs, or panels
    • E04C2/02—Building elements of relatively thin form for the construction of parts of buildings, e.g. sheet materials, slabs, or panels characterised by specified materials
    • E04C2/08—Building elements of relatively thin form for the construction of parts of buildings, e.g. sheet materials, slabs, or panels characterised by specified materials of metal, e.g. sheet metal
    • 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
    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04C—STRUCTURAL ELEMENTS; BUILDING MATERIALS
    • E04C2/00—Building elements of relatively thin form for the construction of parts of buildings, e.g. sheet materials, slabs, or panels
    • E04C2/02—Building elements of relatively thin form for the construction of parts of buildings, e.g. sheet materials, slabs, or panels characterised by specified materials
    • E04C2/26—Building elements of relatively thin form for the construction of parts of buildings, e.g. sheet materials, slabs, or panels characterised by specified materials composed of materials covered by two or more of groups E04C2/04, E04C2/08, E04C2/10 or of materials covered by one of these groups with a material not specified in one of the groups
    • E04C2/284—Building elements of relatively thin form for the construction of parts of buildings, e.g. sheet materials, slabs, or panels characterised by specified materials composed of materials covered by two or more of groups E04C2/04, E04C2/08, E04C2/10 or of materials covered by one of these groups with a material not specified in one of the groups at least one of the materials being insulating
    • E04C2/292—Building elements of relatively thin form for the construction of parts of buildings, e.g. sheet materials, slabs, or panels characterised by specified materials composed of materials covered by two or more of groups E04C2/04, E04C2/08, E04C2/10 or of materials covered by one of these groups with a material not specified in one of the groups at least one of the materials being insulating composed of insulating material and sheet metal
    • 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

Definitions

  • metal foams as lightweight structures have been the subject of research and some already in technical application.
  • metal foam sandwiches have proven to be particularly interesting, which are usually built up in three layers from a metal foam core and these outer layers closing off to the outside. If it is in principle possible to produce such sandwich structures by gluing the cover layers to the foam core layer, then other production methods have become established in which the unfoamed core material is bonded to the cover layers, for example by means of rolling metallic, similar to roll plating. Such production processes are known, for example, from EP 0 997 215 A2 or EP 1 000 690 A2.
  • the core layer of the resulting semi-finished product is then foamed in a heating process by means of a contained in the core layer and thermally activated blowing agent, wherein the metallic connection of the core is maintained at the cover layers.
  • the resulting metal foam sandwich structure is completely free of any adhesives and thus temperature-resistant below the melting temperature of the metal, so that in contrast to bonded sandwich structures and heat-generating bonding techniques such as welding can be used.
  • Such metal foam sandwich structures are also of great interest because shaping processes known from sheet metal transformation can be used to reform either the unfoamed semi-finished product or else the foamed sandwich material. In this way, unlike most other sandwich materials, it is possible to create complex, 3-dimensional geometries.
  • the present invention seeks to counteract this disadvantage.
  • the sandwich material before forming or compacting to a temperature above the ambient temperature - but below the melting temperature of the metal foam core - heated.
  • the metal foam core has as a result of the action according to the invention on the metal foam sandwich structure at least one area in which the foam cells are partially flattened and the cell walls are folded like a lamella.
  • Foam core is particularly suitable aluminum foam.
  • the metal foam sandwich structure is molded or compacted at least 75%, more preferably at least 95% of the melting temperature of the metal foam core.
  • the sandwich material is heated to a temperature just below the melting point of the foam material.
  • the invention therefore has the subject of a Formgebu ⁇ gs vide that does not have the initially described disadvantages of the prior art and instead a transformation or compaction of subregions or the entire sandwich structure allows without the cell walls of the foam structure are significantly damaged or even completely destroyed.
  • metal foam sandwich structures formed by the shaping method according to the invention do not exhibit the damage known from the prior art. Due to the absence of areas in the foam in which the cell walls of the foam structure are partially or completely destroyed, the sandwich structure substantially retains its strength even after being formed or compacted.
  • Fig. 1 is a partially compacted metal foam sandwich structure, which was compacted according to the prior art, ie cold;
  • FIG. 2 shows an enlarged portion of FIG. 1
  • Fig. 3 shows a partially compacted metal foam sandwich structure which has been compacted according to the present invention, ie hot.
  • FIG. 4 shows an enlarged portion of FIG. 3
  • FIG. 1 and the detailed view in FIG. 2 show a metal foam sandwich structure consisting of a metal foam core 1 and metal-bonded cover layers 2, which are formed by cold forming after the foaming process, in FIG case compacted, that was deformed perpendicular to the top layer surface.
  • a metal foam sandwich structure consisting of a metal foam core 1 and metal-bonded cover layers 2, which are formed by cold forming after the foaming process, in FIG case compacted, that was deformed perpendicular to the top layer surface.
  • cracks 1a have formed inside the foam core 1, in the region of which the cell walls are completely or partially collapsed.
  • the reason for this is the brittleness of the metal foam core, or to name the cell walls, which have exhibited only insufficient plastic deformability during the forming process.
  • In .Extremfall such cracks 1a already during the forming process lead to failure of the entire sandwich structure. If this is not the case, they lead at least in use to a considerable reduction in the strength of the sandwich structure.
  • areas 2b have been formed in which the foam cells that are almost spherical before forming have been flattened and the cell walls have been folded like a lamella, so that the cells in some areas have almost completely disappeared.
  • the cause of the changed deformation behavior of the foam core in the hot-forming process compared to the cold-forming process is primarily to name the fact that the heating of the foam core, this behaves much more plastic than in the cold state.
  • the process is therefore carried out at process temperatures which are above 95% but below 100% of the melting temperature of the core material. It is obvious that the failure of the cracks 1a substantially maintains the strength of the foam core after the hot-forming process.

Landscapes

  • Engineering & Computer Science (AREA)
  • Architecture (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Composite Materials (AREA)
  • Manufacturing & Machinery (AREA)
  • Materials Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Laminated Bodies (AREA)

Abstract

L'invention concerne un procédé pour le modelage ou le formage de structures sandwich en mousse métallique qui comprennent au moins une âme en mousse métallique (1) et au moins une couche extérieure (2) reliée métalliquement à cette âme. Selon ce procédé, le modelage ou le formage se font à une température supérieure à la température ambiante et inférieure à la température de fusion de l'âme en mousse métallique. L'invention concerne également des structures sandwich en mousse métallique produites selon ce procédé.
PCT/EP2006/003524 2005-04-18 2006-04-18 Structures sandwich en mousse metallique et procede pour leur modelage WO2006111349A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE202005006240.5 2005-04-18
DE202005006240U DE202005006240U1 (de) 2005-04-18 2005-04-18 Metallschaum-Sandwichs

Publications (1)

Publication Number Publication Date
WO2006111349A1 true WO2006111349A1 (fr) 2006-10-26

Family

ID=35220240

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/EP2006/003524 WO2006111349A1 (fr) 2005-04-18 2006-04-18 Structures sandwich en mousse metallique et procede pour leur modelage

Country Status (2)

Country Link
DE (1) DE202005006240U1 (fr)
WO (1) WO2006111349A1 (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106862572A (zh) * 2017-01-24 2017-06-20 东莞市佳乾新材料科技有限公司 一种建筑用抗爆泡沫铝夹层板及其制备方法
KR20220162364A (ko) 2021-06-01 2022-12-08 부산대학교 산학협력단 신규 스퀘어아마이드 유도체 및 이의 용도

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102006007012B4 (de) * 2006-02-15 2007-11-08 Aktiebolaget Skf Lageranordnung
DE202013103272U1 (de) 2013-07-22 2014-10-23 Wegener International Gmbh Heizeinrichtung für die Plastifizierung von Werkstücken aus einem thermoplastischen Kunststoff

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0588182A2 (fr) * 1992-09-18 1994-03-23 M. Faist GmbH & Co. KG Elément en mousse pour atténuer ou isoler le son, son procédé de fabrication et l'utilisation
AT406350B (de) * 1993-07-29 2000-04-25 Fraunhofer Ges Forschung Poröser metallischer werkstoff mit anisotropen eigenschaften
US6090232A (en) * 1996-03-29 2000-07-18 Wilhelm Karmann Gmbh Component made from a metallic foam material
WO2004067212A2 (fr) * 2003-01-31 2004-08-12 Wilhelm Karmann Gmbh Composants comprenant une couche de mousse metallique

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0588182A2 (fr) * 1992-09-18 1994-03-23 M. Faist GmbH & Co. KG Elément en mousse pour atténuer ou isoler le son, son procédé de fabrication et l'utilisation
AT406350B (de) * 1993-07-29 2000-04-25 Fraunhofer Ges Forschung Poröser metallischer werkstoff mit anisotropen eigenschaften
US6090232A (en) * 1996-03-29 2000-07-18 Wilhelm Karmann Gmbh Component made from a metallic foam material
WO2004067212A2 (fr) * 2003-01-31 2004-08-12 Wilhelm Karmann Gmbh Composants comprenant une couche de mousse metallique

Non-Patent Citations (2)

* Cited by examiner, † Cited by third party
Title
BRAUNE, R. (UNIVERSITAT ERLANGEN-NURNBERG) ET AL: "Tailored blanks made from aluminum foam sandwich material.[ Tailored blanks aus Aluminium Foam Sandwich .].", UTF SCIENCE, vol. 1, no. 3, 2000, pages 4 - 9, XP009069297 *
SEELIGER, H.-W. (KARMANN) ADVANCED ENGINEERING MATERIALS (2002), VOL. 4, (10), PP. 753-758, GRAPHS, 2 REF.: "Manufacture of aluminum foam sandwich (AFS) components.", ADVANCED ENGINEERING MATERIALS, vol. 4, no. 10, 2002, pages 753 - 758, XP009069294 *

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106862572A (zh) * 2017-01-24 2017-06-20 东莞市佳乾新材料科技有限公司 一种建筑用抗爆泡沫铝夹层板及其制备方法
KR20220162364A (ko) 2021-06-01 2022-12-08 부산대학교 산학협력단 신규 스퀘어아마이드 유도체 및 이의 용도
KR20220162680A (ko) 2021-06-01 2022-12-08 부산대학교 산학협력단 신규 스퀘어아마이드 유도체 및 이의 용도

Also Published As

Publication number Publication date
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