EP0804982A2 - Procédé de préparation d'ébauches de mousse métallique - Google Patents

Procédé de préparation d'ébauches de mousse métallique Download PDF

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Publication number
EP0804982A2
EP0804982A2 EP97890073A EP97890073A EP0804982A2 EP 0804982 A2 EP0804982 A2 EP 0804982A2 EP 97890073 A EP97890073 A EP 97890073A EP 97890073 A EP97890073 A EP 97890073A EP 0804982 A2 EP0804982 A2 EP 0804982A2
Authority
EP
European Patent Office
Prior art keywords
mold
chamber
foam
metal 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.)
Granted
Application number
EP97890073A
Other languages
German (de)
English (en)
Other versions
EP0804982B1 (fr
EP0804982A3 (fr
Inventor
Frantisek Dr.-Ing. Simancik
Franz Dipl.-Ing. Schörghuber
Erich Ing. Hartl
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.)
USTAV MATERIAELOV A MECHANIKY STROJOV SLOVENSKEJ A
Original Assignee
Leichtmetallguss-Kokillenbau-Werk Illichmann 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 Leichtmetallguss-Kokillenbau-Werk Illichmann GmbH filed Critical Leichtmetallguss-Kokillenbau-Werk Illichmann GmbH
Priority to NO972810A priority Critical patent/NO972810L/no
Publication of EP0804982A2 publication Critical patent/EP0804982A2/fr
Publication of EP0804982A3 publication Critical patent/EP0804982A3/fr
Application granted granted Critical
Publication of EP0804982B1 publication Critical patent/EP0804982B1/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
    • B22F2999/00—Aspects linked to processes or compositions used in powder metallurgy

Definitions

  • the invention relates to a process for the production of molded parts made of metal foam, for example aluminum foam, which is formed by powder metallurgy by foaming a mixture of gas-releasing propellant with metal powder as the starting material under heat, in particular compacted into a semi-finished product such as rods, pipes or granules. Furthermore, the invention also relates to a device for performing the method.
  • metal foam for example aluminum foam
  • the invention also relates to a device for performing the method.
  • Light metal fittings can be designed as a solid casting, as a hollow body or as a metal foam body. While in the first-mentioned category the same and thin wall thicknesses and the avoidance of local accumulation of material have to be ensured, hollow bodies usually required expensive casting cores, which complicate the production. A modern alternative is achieved using metal foam casting.
  • the cast skin forms a smooth outer surface of the cast product, the inside of which is loosely filled by a pore structure.
  • Metal foam casting is suitable for many areas of application, which leads to a particularly light end product that offers good sound insulation and low thermal conductivity. The strength properties are surprisingly high. However, not every machine part can be manufactured using this casting technique.
  • DE 43 26 982 C1 describes a typical method and an apparatus for producing molded parts from metal foam formed by melt metallurgy.
  • a melt e.g. an aluminum melt is kept liquid in two communicating containers and in one of the two containers the metal melt is foamed by an agitator. The finished foam is pressed up into a mold by raising the level of the liquid aluminum in the latter container.
  • Powder-metallurgical metal foam is produced, for example, according to DE 41 01630 C2 from metal powder and a gas-releasing blowing agent.
  • the material is hot compacted and subjected to a change in shape.
  • the semifinished product is foamed, for example in a heated steel mold, by the action of temperature, the metal foam gradually filling the mold.
  • the disadvantage here is that the contour of the semi-finished product must correspond to the contour of the mold cavity, since otherwise there is no uniform foaming. If rod-shaped primary material is used, it must be cut to length and placed in the form. Cold welds can also form between the foamed rods.
  • the invention aims to provide a method which enables the production of contoured, three-dimensional molded parts of high quality. Uniform pores and a uniform, homogeneous surface as well as the possibility of influencing the pore size and the pore density as well as the surface and its layer thickness are desired parameters in the manufacturing process.
  • This goal is achieved in a method of the type described in the introduction in that the powder metallurgical starting material is heated Chamber foams outside the mold, that the volume of the powder metallurgical starting material introduced into the heatable chamber, in particular semi-finished product, corresponds essentially to the volume of a filling of the mold in its phase foamed with the total foaming capacity, and that the entire contents of the chamber as metal foam in the mold is pressed, in which foaming preferably continues with the remaining foaming capacity until the mold is completely filled.
  • metal foam is produced outside the mold by thermal foaming of the quantity of the semi-finished product predetermined for the mold. Unlike a melt metallurgical process, this metal foam can be pressed into the mold during its formation. The final phase of foam formation then takes place there. This means that even remote areas or difficult-to-reach contours or undercuts are reliably filled. An early collapse of the pores is avoided.
  • the density of the molded part can be adjusted via the degree of filling of the gas-heated chamber, for example, with semi-finished or starting material or via the chamber volume.
  • the time at which the metal foam is transferred from the chamber into the mold is also a further criterion. This preselects the residual foam capacity that will take effect in the mold.
  • foam formation in the mold can be dispensed with at most.
  • the chamber with the foam-forming starting material is rotated with respect to the casting mold in the manner of a rotary drum furnace and, if necessary, tilted into the casting mold for emptying.
  • the mold is filled by the inherent pressure of the foam material.
  • the metal foam in the chamber is pressed into the mold by a piston. The piston speed and the pressure form further criteria for the appearance of the molded part, both with regard to its surface and the pore shape and density.
  • the resulting metal foam can also be introduced by the metal foam being melted by a non-metal foam
  • a non-metal foam For example, a molten salt, to which a pressure is exerted and on which the powder-metallurgical metal foam floats, is lifted and pressed into the mold.
  • the non-metallic melt is introduced into the chamber or pressed into it. This lifts the metal foam directly into the casting mold, either directly or via a floating piston plate. It is advantageous if the melt carrying the metal foam is specifically heavier than the mother metal of the foam and the melting point is lower (eg zinc or tin and aluminum).
  • the inductive heating in conjunction with a tubular semi-finished product leads to the best foam quality.
  • An independent transfer of the foam from the chamber into the mold is achieved at the right time in that the semi-finished tube is pressed against the nozzle plate with a defined and adjustable force at least in the final phase of the heating process by the piston, so that the injection process is initiated in the mold as soon as the semi-finished product reaches the melting point and thus foams.
  • the heating or preheating of the semi-finished product is carried out under protective gas and preferably if the chamber is flushed with protective gas.
  • the mass of the metal foam produced in the chamber and available for a molded part is limited.
  • the powder-metallurgical foam of several chambers, which are connected in parallel is pressed into the cavity of one or more molds at the same time or by means of a control over several gates.
  • a series of casting modules are thus combined in one system, which fill the shape of the foam part to be cast over several cuts.
  • the modules are generally controlled synchronously so that they feed into the mold at the same time.
  • a device for performing the method is characterized in that the chamber is surrounded by a jacket for externally heated, non-metallic foam melt for heating the chamber.
  • the melt used to heat the chamber is heated in a separate furnace. In this way, a large temperature volume can be fed uniformly to the chamber for the powder metallurgical semi-finished product.
  • the device can be automated in that one or more chambers are arranged on a slide or carousel and can be moved or rotated from a loading or cleaning position into the heating position for the loaded semifinished product with respect to a connection to a mold.
  • FIG. 1 shows an oven with a chamber and a mold before the start of foaming
  • FIG. 2 shows the arrangement according to FIG. 1 after transfer of the metal foam into the casting mold
  • FIG. 3 shows an alternative embodiment of the arrangement
  • FIG. 4 shows another alternative analogous to FIG. 1.
  • FIG. 5 shows another embodiment
  • Fig. 6 is a multiple execution.
  • 7 shows an embodiment with a heating variant
  • FIG. 8 shows an embodiment with displaceable chambers.
  • a chamber 2 for receiving a powder metallurgical starting material 3. It is a compacted semi-finished product, for example wire pieces or pipe pieces made of metal powder and a propellant, which, when exposed to the appropriate temperature, form a metal foam form.
  • a mold 4 With the chamber 2 is a mold 4 via a nozzle 5 in the manner of a perforated diaphragm for gate adjustment for the casting in connection.
  • a piston 6 is guided in the chamber 2.
  • an aluminum foam is formed in chamber 2 from the semifinished product, for example aluminum wire pieces, produced for example according to EP 460 392 A1, which is completely and completely transferred into casting mold 4 with the aid of piston 6 will (Fig. 2).
  • the chamber 2 is emptied and can then be filled again with semifinished product as the starting material for the foam formation, the filling being precisely matched to the volume of the cast body.
  • the foam formation continues with the aid of the piston in the mold 4.
  • the mold is removed from the oven 1 for cooling. This prevents the foam pores from collapsing as a result of excessive heat input.
  • the casting 9 can be demolded and the chamber 2 in furnace 1 with a new shape.
  • a steel mold can also be used repeatedly after a cleaning cycle.
  • FIG. 4. 4 shows a chamber 2 which has an inductive heating 7.
  • a furnace 1, which accommodates the entire arrangement, is not available here.
  • the mold 8 is unheated.
  • a sand mold is advantageously used.
  • the foaming takes place in FIG. 4 in the chamber 2 analogously to FIG. 1.
  • the foam is pressed by the piston 6 into the casting mold 8 (sand mold).
  • the casting mold 8 sand mold
  • the metal foam retains its viscosity and reaches the last corners of the mold.
  • the continued foam formation in the mold supports this effect. In this way, very complicated castings with narrow ribs, undercuts or the like can also be produced.
  • the steel molds normally used in metal foam casting technology lead to a sudden heat removal as soon as the metal foam gets into the casting mold, which leads to an at least superficial loss of viscosity and thus to a much poorer distribution behavior of the metal foam in the casting mold.
  • the steel molds therefore had to be additionally heated in certain critical areas in order to maintain the viscosity of the casting mass locally. This resulted in internal stress states, different pore structures and collapse of the structure at temperatures that were not precisely matched.
  • the unheated sand mold 8 shown in FIG. 4 solves the problems. Any non-metallic form, including a ceramic or plaster form, can be used with the advantages mentioned.
  • FIG. 3 shows an alternative to FIGS. 1 and 2.
  • the nozzle 10 and the mold 11 is rotatably arranged over one or two separate heating devices 12, 13 which are separately adjustable or can be switched on and off.
  • a drive 14 with a bearing 15 faces the piston rod 16, which is designed as a bearing on the other side.
  • the process proceeds as described for FIGS. 1 and 2.
  • the rotation homogenizes the powder-metallurgical foam formation in the chamber 2 and also in the casting mold 11.
  • the latter can remain unheated in the sense of the explanations for FIG. 4 as a non-metallic casting mold. It is also possible to arrange only the chamber 2 or only the mold 11 in a rotatable manner.
  • a tubular semi-finished product 3 ' is provided in the chamber 2 as powder metallurgical starting material on a cutting disc 20, for example made of titanium or ceramic.
  • the tubular semifinished product 3 ' is heated uniformly by inductive heating 21, so that the foam is also formed very uniformly and homogeneously.
  • the foam as the content of the chamber 2 floats according to FIG. 5 - with the interposition of the cutting disc 20 on a "liquid piston", which is formed by a zinc, tin or lead melt.
  • the tub 22 is kept at the melting temperature (heating not shown).
  • a piston 23 presses the melt down, as a result of which the cutting disc 20 is raised and the foam content of the chamber 2 is pressed into the mold 8. As mentioned, depending on the time of transfer, the residual foam formation can take place there.
  • the high heating-up speed and the heating in the semi-finished product itself which can be attributed to inductive heating, contribute to the reduction of oxide formation. 5 with the melt in the tub 22, oxide residues on the wall of the chamber 2 are removed.
  • FIG. 6 shows a multiple application of modules according to FIG. 4 or 5.
  • the individual chambers 2 ' can be inductively heated and feed the metal foam formed into the mold or molds synchronously or with a time delay via a control.
  • the foam formation in the chamber or chambers according to FIGS. 1 to 6 can also take place according to FIG. 7 in that the chambers 2 or the chambers are or are surrounded by a jacket made of metal foam-foreign melt 26 for heating.
  • the melt 26 is heated in an oven 27. It follows due to the large heat potential of the melt, the powder metallurgical semi-finished product is in an ideal heating state, which has a positive influence on the evenness of the foaming and the foaming time. In order to be able to heat the primary material (semi-finished product) as quickly as possible at the lowest possible temperatures, the shape of the semi-finished product is particularly important.
  • the device according to FIG. 7 can of course also be equipped with a floating piston according to FIG. 5.
  • Another variant of the invention consists in pressing the semi-finished tube 3 ′ inserted into the chamber 2 against the nozzle plate 5 with a defined force by the piston 6.
  • the piston 6 can press the prepared foam into the mold. It can be expedient to change the force on the piston and thus the speed at which the foam shoots into the mold 8 as soon as the piston 6 starts to move. This measure results in a very simple control of the system, which is able to compensate for any variations, for example in the preheating temperature of the semi-finished product, in its heating-up speed or in the melting point of the semi-finished alloy, since only a corresponding viscosity of the foam is reached at the time of injection.
  • FIG. 8 shows a further alternative with a plurality of chambers 2 ′, 2 ′′, which here have electrical heaters 27 ′, 27 ′′, for example corresponding to FIG. 7, and from a melt 26 ', 26 "are encased for heat transfer.
  • the chambers 2, 2' are together with their heaters 27 ', 27" in the device according to FIG. 8 about a central axis 28 from a cleaning and optionally loading position for the tubular semi-finished product 3 "into one
  • the rotatable part also moves in the axial direction, so that the chamber 2 "directly adjoins the (divided) mold 4.
  • a piston 6 ' presses the metal foam into the interior of the mold 4.
  • the horizontal arrangement of the chambers 2 ', 2 " is advantageous because the piston 6' does not have to stay in the heated area during the foaming and is therefore subject to only a low temperature load.
  • the device can have one, two or more chambers 2 ', 2" which occupy two or more positions (e.g. separate cleaning, loading with semi-finished products, heating and injecting).
  • a turret or carousel construction with several stations, but also a linear displacement back and forth by means of a slide construction can be provided.
EP97890073A 1996-04-19 1997-04-18 Procédé de préparation d'ébauches de mousse métallique Expired - Lifetime EP0804982B1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
NO972810A NO972810L (no) 1997-04-18 1997-06-18 FremgangsmÕte for fremstilling av formdeler av metallskum

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
AT0071996A AT406027B (de) 1996-04-19 1996-04-19 Verfahren zur herstellung von formteilen aus metallschaum
AT71996 1996-04-19
AT719/96 1996-04-19

Publications (3)

Publication Number Publication Date
EP0804982A2 true EP0804982A2 (fr) 1997-11-05
EP0804982A3 EP0804982A3 (fr) 1997-11-12
EP0804982B1 EP0804982B1 (fr) 2002-11-27

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EP97890073A Expired - Lifetime EP0804982B1 (fr) 1996-04-19 1997-04-18 Procédé de préparation d'ébauches de mousse métallique

Country Status (5)

Country Link
US (1) US5865237A (fr)
EP (1) EP0804982B1 (fr)
JP (1) JPH1029052A (fr)
AT (2) AT406027B (fr)
DE (1) DE59708794D1 (fr)

Cited By (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AT408317B (de) * 1998-04-09 2001-10-25 Mepura Metallpulver Verfahren zur herstellung von schaummetall-formkörpern
DE10045494A1 (de) * 2000-09-13 2002-04-04 Neue Materialien Fuerth Gmbh Verfahren zum Herstellen eines Formkörpers aus Metallschaum
DE10104340A1 (de) * 2001-02-01 2002-08-08 Goldschmidt Ag Th Verfahren zur Herstellung von Mettalschaum und danach hergestellter Metallkörper
DE10104339A1 (de) * 2001-02-01 2002-08-08 Goldschmidt Ag Th Verfahren zur Herstellung von Metallschaum und danach hergestellter Metallkörper
EP1319453A1 (fr) * 2001-12-14 2003-06-18 EADS Deutschland GmbH Dispositif et procédé de remplissage de profilés creux avec une mousse métallique
US6874562B2 (en) 2001-06-07 2005-04-05 Goldschmidt Ag Process for producing metal/metal foam composite components
US6915834B2 (en) 2001-02-01 2005-07-12 Goldschmidt Ag Process for producing metal foam and metal body produced using this process
WO2007014559A1 (fr) * 2005-08-02 2007-02-08 Hahn-Meitner-Institut Berlin Gmbh Procede de fabrication de mousse metallique et de pieces en mousse metallique par metallurgie des poudres
DE102005047129A1 (de) * 2005-09-30 2007-04-05 Bayerische Motoren Werke Ag Verbindungsknoten zur Verbindung eines Knotenelementes mit mindestens einem Anschlussprofil, insbesondere für den Karosseriebau
DE102008000100A1 (de) 2008-01-18 2009-07-23 Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V. Leichtgewichtiger Grün- und Formkörper aus einem keramischen und/oder pulvermetallurgischen Material und Verfahren zu seiner Herstellung
EP3135404A1 (fr) * 2015-08-28 2017-03-01 Ustav materialov a mechaniky strojov SAV Procédé de production d'un composant en mousse métallique, composant réalisé par ce procédé et moule pour la réalisation de ce procédé
CN107442775A (zh) * 2017-07-14 2017-12-08 成都新柯力化工科技有限公司 一种石墨烯泡沫铝复合金属材料及制备方法

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DE10042569C1 (de) * 2000-08-25 2002-04-04 Christian Steglich Verfahren und Einrichtung zur Herstellung von Verbundwerkstoffen mit einem Kern aus Metallschaum
DE10123899A1 (de) * 2001-05-16 2002-11-21 Goldschmidt Ag Th Verfahren zur Herstellung von Metallformteilen
ES2281521T3 (es) * 2001-05-19 2007-10-01 Goldschmidt Gmbh Produccion de espumas metalicas.
US6660224B2 (en) 2001-08-16 2003-12-09 National Research Council Of Canada Method of making open cell material
CN1277637C (zh) * 2001-08-17 2006-10-04 赛麦特公司 低压金属泡沫铸造方法和装置
US7108828B2 (en) * 2001-08-27 2006-09-19 National Research Council Of Canada Method of making open cell material
BR0307407A (pt) * 2002-02-01 2004-12-28 Cymat Corp Método e aparelho para lingotamento de espuma metálica
WO2003074163A1 (fr) * 2002-03-04 2003-09-12 Cymat Corp. Turbine etanche pour la production de mousse metallique, systeme et procede a cet effet
DE60319700T2 (de) * 2002-05-20 2009-03-05 Liquidmetal Technologies, Inc., Lake Forest Geschäumte strukturen von glasbildenden amorphen legierungen
JP2004058130A (ja) * 2002-07-31 2004-02-26 Kobe Steel Ltd 軽合金の射出発泡成形方法及び射出発泡成形装置
DE10253382B4 (de) * 2002-11-15 2006-03-09 Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V. Verfahren und Vorrichtung zur Herstellung metallischer Schaumkörper sowie Schüttgut hierfür
US7621314B2 (en) * 2003-01-17 2009-11-24 California Institute Of Technology Method of manufacturing amorphous metallic foam
JP4233018B2 (ja) * 2003-01-17 2009-03-04 本田技研工業株式会社 発泡体を充填した閉断面構造体の製造方法
US7588071B2 (en) * 2003-04-14 2009-09-15 Liquidmetal Technologies, Inc. Continuous casting of foamed bulk amorphous alloys
DE10325819B4 (de) * 2003-06-07 2005-06-23 Friedrich-Alexander-Universität Erlangen-Nürnberg Verfahren zur Herstellung eines Metallschaumkörpers
ES2546329T3 (es) * 2003-07-24 2015-09-22 Tecomet Inc. Espumas no aleatorias ensambladas
WO2006021082A1 (fr) * 2004-08-24 2006-03-02 Cymat Corp. Appareil de coulage de mousse métallique et procédés idoines
CN100509373C (zh) * 2005-03-17 2009-07-08 严培义 粉末成形机充填调节限位装置
CN100335198C (zh) * 2005-08-25 2007-09-05 上海交通大学 制备泡沫金属的含盐石膏模料
US7699092B2 (en) * 2007-06-18 2010-04-20 Husky Injection Molding Systems Ltd. Metal-molding system and process for making foamed alloy
DE102010040249A1 (de) 2010-09-03 2012-03-08 Man Diesel & Turbo Se Doppelwandiges Rohr
JP5617085B1 (ja) * 2014-01-10 2014-11-05 福井県 高圧鋳造方法および高圧鋳造装置
CN108405831A (zh) * 2018-03-20 2018-08-17 北京科技大学 通过压铸过程制备泡沫铝及铝合金异型件的方法
US11324585B2 (en) * 2018-10-12 2022-05-10 Biosense Webster (Israel) Ltd. Method for producing shell and foam filler for a breast implant

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DE4424157A1 (de) * 1993-07-29 1995-02-02 Fraunhofer Ges Forschung Poröser metallischer Werkstoff mit anisotropen Eigenschaften
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Cited By (16)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AT408317B (de) * 1998-04-09 2001-10-25 Mepura Metallpulver Verfahren zur herstellung von schaummetall-formkörpern
DE10045494A1 (de) * 2000-09-13 2002-04-04 Neue Materialien Fuerth Gmbh Verfahren zum Herstellen eines Formkörpers aus Metallschaum
DE10045494C2 (de) * 2000-09-13 2002-07-18 Neue Materialien Fuerth Gmbh Verfahren zum Herstellen eines Formkörpers aus Metallschaum
US6915834B2 (en) 2001-02-01 2005-07-12 Goldschmidt Ag Process for producing metal foam and metal body produced using this process
DE10104339A1 (de) * 2001-02-01 2002-08-08 Goldschmidt Ag Th Verfahren zur Herstellung von Metallschaum und danach hergestellter Metallkörper
DE10104340A1 (de) * 2001-02-01 2002-08-08 Goldschmidt Ag Th Verfahren zur Herstellung von Mettalschaum und danach hergestellter Metallkörper
US6874562B2 (en) 2001-06-07 2005-04-05 Goldschmidt Ag Process for producing metal/metal foam composite components
EP1319453A1 (fr) * 2001-12-14 2003-06-18 EADS Deutschland GmbH Dispositif et procédé de remplissage de profilés creux avec une mousse métallique
US6889744B2 (en) 2001-12-14 2005-05-10 Eads Deutschland Gmbh Device and method for the in-situ foaming of hollow profiles with metal foam
WO2007014559A1 (fr) * 2005-08-02 2007-02-08 Hahn-Meitner-Institut Berlin Gmbh Procede de fabrication de mousse metallique et de pieces en mousse metallique par metallurgie des poudres
US8562904B2 (en) 2005-08-02 2013-10-22 Helmholtz-Zentrum Berlin Fuer Materialien Und Energie Gmbh Method for the powder-metallurgical production of metal foamed material and of parts made of metal foamed material
DE102005047129A1 (de) * 2005-09-30 2007-04-05 Bayerische Motoren Werke Ag Verbindungsknoten zur Verbindung eines Knotenelementes mit mindestens einem Anschlussprofil, insbesondere für den Karosseriebau
DE102008000100A1 (de) 2008-01-18 2009-07-23 Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V. Leichtgewichtiger Grün- und Formkörper aus einem keramischen und/oder pulvermetallurgischen Material und Verfahren zu seiner Herstellung
EP3135404A1 (fr) * 2015-08-28 2017-03-01 Ustav materialov a mechaniky strojov SAV Procédé de production d'un composant en mousse métallique, composant réalisé par ce procédé et moule pour la réalisation de ce procédé
WO2017037522A1 (fr) * 2015-08-28 2017-03-09 Ústav Materiálov A Mechaniky Strojov Sav Procédé de production d'un élément à partir de mousse métallique, élément produit par ledit procédé et moule pour la réalisation dudit procédé
CN107442775A (zh) * 2017-07-14 2017-12-08 成都新柯力化工科技有限公司 一种石墨烯泡沫铝复合金属材料及制备方法

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ATA71996A (de) 1999-06-15
ATE228411T1 (de) 2002-12-15
DE59708794D1 (de) 2003-01-09
EP0804982B1 (fr) 2002-11-27
EP0804982A3 (fr) 1997-11-12
JPH1029052A (ja) 1998-02-03
AT406027B (de) 2000-01-25
US5865237A (en) 1999-02-02

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