EP0804982B1 - Verfahren zur Herstellung von Formteilen aus Metallschaum - Google Patents
Verfahren zur Herstellung von Formteilen aus Metallschaum Download PDFInfo
- Publication number
- EP0804982B1 EP0804982B1 EP97890073A EP97890073A EP0804982B1 EP 0804982 B1 EP0804982 B1 EP 0804982B1 EP 97890073 A EP97890073 A EP 97890073A EP 97890073 A EP97890073 A EP 97890073A EP 0804982 B1 EP0804982 B1 EP 0804982B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- chamber
- foam
- mould
- process according
- metal
- 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
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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 method for casting molded parts made of metal foam, for example aluminum foam, the by powder metallurgy by foaming a particular to a semi-finished product, such as rods, pipes or granules compacted mixture of gas-releasing propellant with metal powder as the starting material under the influence of heat is formed.
- the invention also relates to a device for performing the method.
- Light metal fittings can be used as solid castings, as hollow bodies or also be designed as a metal foam body. While in the former category on the same as possible and thin wall thicknesses and the avoidance of local material accumulations to be observed, required hollow body mostly 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, its interior is loosely filled with a pore structure is. The is suitable for a large number of application areas Metal foam casting, which results in a particularly light end product that leads to good sound insulation and low thermal conductivity offers. The strength properties are surprisingly high. Still, not every machine part can do this Casting technology can be produced.
- powder metallurgical metal foam is produced according to DE 41 01630 C2 from metal powder and a gas-releasing Propellant.
- the material is hot compacted and subjected to a change in shape.
- the semi-finished product is e.g. in a heated steel mold due to the effects of temperature brought to frothing, the metal foam the Fills out the form gradually.
- the disadvantage is that the Contour of the semi-finished product correspond to the contour of the mold cavity must, otherwise there is no even foaming. If you use rod-shaped primary material, then this must be exact cut to length and placed in the form. It can also cold welds between the foamed bars form.
- a foam produced by melt metallurgy is already working into the state of the pores collapsing when after its manufacture is pressed into the mold. Often heated molds used, but their temperature does not increase may be high, otherwise the metal foam in reinforced Dimensions collapsed. The pores fall during foam production also uncontrollable and in different sizes. in the in general, this method only allows the production of simple mold parts. Furthermore, in the case of smelting metallurgical Procedure requires an agitator, positioning the stirrer in the melt is extremely problematic. The foam is only created in the area of the by the agitator Stirrer, so that the foam already produced during production of the foam still required during the stirring time collapsed. In addition, the amount of foam required is not exactly adjustable, so that the same parts do not match To have weight. The pores created have no internal overpressure, so that it is compressed when pressed into the form become. This results in an inconsistent structure.
- DE 44 24 157 A describes a method for producing a porous metallic material with anisotropic properties described in which a foamed and porous metal foam plastically deformed with isotropic properties becomes.
- the invention aims to provide a method that the production of contoured, three-dimensional molded parts of high quality. Uniform pores and a uniform, homogeneous surface and the possibility influencing the pore size and density as well the surface and its layer thickness are desirable parameters in the manufacturing process.
- foam can be formed at best to be dispensed with in the mold. It is according to a training course of the method advantageous if the chamber with the foam-forming starting material compared to the mold in the type of a rotary drum furnace rotated and, if necessary, for Emptying is tipped into the mold. This will make the mold filled by the inherent pressure of the foam material. Especially It is advantageous if the metal foam in the chamber is pressed into the mold by a piston. The Koiben speed and the pressure form additional criteria for that Appearance of the molded part, both in terms of its Surface as well as the pore shape and density. The bringing in the resulting metal foam can also be made that the metal foam through a non-metal foam melt e.g.
- To the non-metallic melt is introduced into the chamber or pushed in. This lifts the metal foam directly or a floating piston plate completely into the Mold.
- the one carrying the metal foam Melt specifically heavier than the parent metal of the Foam and the melting point is lower (e.g. zinc or Tin and aluminum).
- Findings in metal foam casting processes was recognized that Excellent results can be achieved when powder metallurgically formed metal foam into a non-metallic Mold, e.g. a sand mold is pressed.
- sand mold In contrast to a steel mold, sand mold carries the heat of the introduced metal foam during the filling process not immediately so that the foam phase is retained until the remote ones Moldings are filled. In addition there is the supportive Effect due to residual foam formation in the mold. The foam is still active Phase into the form and contributes to the essential quality improvement at.
- the semi-finished product is required. It should large temperature gradients in the chamber are avoided and the foam formation should by rapid heating of the chamber in Edge area of the chamber as well as inside if possible at the same time respectively. This is achieved in that a tubular or pipe socket-shaped semifinished product introduced into the chamber becomes. It is useful if this is as small as possible Play to the inner wall of the chamber, i.e. in thermal connection is provided to the wall in the chamber.
- the heater can electrically, for example inductively. eddy currents and skin effect of inductive heating must be taken into account.
- the inductive heating leads in connection with a tubular semi-finished products for the best foam quality.
- An independent one Transfer the foam from the chamber to the mold is achieved at the right time by the semi-finished tube at least in the final phase of the heating process against the piston with a defined and adjustable force the nozzle plate is pressed so that the injection process is introduced into the form as soon as the semi-finished product Melting point reached and thus foamed.
- the heating or a Preheating the semi-finished product is carried out under protective gas and preferably if the chamber is flushed with protective gas.
- a device for Carrying out the method is characterized in that the chamber of a jacket for externally heated, non-metallic foam Melt for heating the chamber is surrounded.
- the for The melt used to heat the chamber is in a separate Oven heated.
- the chamber for powder metallurgy Semi-finished product a large temperature volume evenly be fed.
- the device can be automated by that one or more chambers on a sled or carousel arranged and from a loading or cleaning position in the heating position for the loaded semi-finished product slidable in relation to a connection to a mold or are rotatable.
- Fig. 1 shows an oven with a chamber and a mold before the start of foaming
- Fig. 2 the arrangement after 1 after transfer of the metal foam into the mold
- 3 shows an alternative embodiment of the arrangement, another alternative analogous to Fig. 1.
- Fig. 5 another Embodiment
- Fig. 6 is a multiple execution.
- Fig. 7 an embodiment with a heating variant
- Fig. 8 a Version with sliding chambers.
- a chamber 2 for receiving a powder metallurgical starting material 3. These are compact semi-finished products, for example around wire pieces or pipe pieces made of metal powder and one Blowing agents that are exposed to the appropriate temperature form a metal foam.
- a mold 4 With the chamber 2 is a mold 4 via a nozzle 5 in the manner of a perforated diaphragm for setting the gate for the casting in connection.
- a piston 6 is guided in the chamber 2.
- chamber 2 By increasing the temperature in oven 1 to about 500 to 600 ° C arises in chamber 2 from, for example, according to the EP 460 392 A1 manufactured semi-finished product, for example aluminum Pieces of wire, an aluminum foam, made with the help of the piston 6 completely and completely transferred into the mold 4 will (Fig. 2).
- the chamber 2 is emptied and can then be new filled with semi-finished products as the starting material for foam formation be filled with the volume of the cast body is precisely coordinated.
- the foam formation continues depending on the selected time the transfer from chamber 2 using the piston still in the mold 4.
- the mold's existing foaming capacity is along with the volume of the semi-finished product used, its consistency and the Temperature profile during foaming and cooling an essential parameter for the structure of the foam part.
- the mold is for cooling taken out of the oven 1. This will cause a collapse the foam pores are prevented due to excessive heat input.
- the Casting 9 can be demolded and the chamber 2 in furnace 1 with a new shape. It can be done after a cleaning cycle a steel mold can also be used repeatedly.
- FIG. 4. 4 a chamber 2 is shown, which has an inductive heating 7 has.
- a furnace 1 that houses the entire arrangement is not available here.
- the mold 8 is unheated.
- a sand mold is advantageously used.
- Foaming takes place analogously in FIG. 4 in chamber 2 to Fig. 1.
- the foam is through the piston 6 into the mold 8 (sand mold) pressed. This takes place in contact between Metal foam and the wall of the mold, namely the Sand, just a little heat removal, so that the metal foam maintains its viscosity and in every last corner of the Mold arrives.
- the one specifically continued in the mold Foaming supports this effect. It can be on this Also very complicated castings with narrow ribs, Undercuts or the like can be produced.
- the unheated sand mold 8 shown in Fig. 4 solves the Problems. It can be any non-metallic form, including one Ceramic or plaster mold used with the advantages mentioned become.
- FIGS. 1 and 2 show an alternative to FIGS. 1 and 2.
- the Nozzle 10 and mold 11 is rotatable over and over two separate heaters 12, 13 arranged the separately can be regulated or switched on and off.
- a drive 14 with a bearing 15 stands the piston rod 16, the is designed as a bearing on the other side.
- the process proceeds as described for FIGS. 1 and 2 is.
- the rotation homogenizes the powder metallurgical Foam formation in the chamber 2 and also in the mold 11.
- the latter can be used in the sense of the explanations for FIG. 4 as non-metallic Mold remain unheated. It is also possible, to arrange only the chamber 2 or only the mold 11 rotatably.
- Fig. 4 which is a further development for execution Fig. 4 is in the chamber 2 as a powder metallurgy Starting material a tubular semifinished product 3 'on a Cutting disc 20, for example made of titanium or ceramic, is provided.
- the tubular semi-finished product 3 ' is made by inductive Heater 21 heated evenly, so that foam formation also is done very evenly and homogeneously.
- the foam as Contents of the chamber 2 floats according to FIG. 5 - with an intermediate layer the cutting disc 20 on a "liquid piston", the is formed by a zinc, tin or lead melt.
- To the tub 22 is kept at the melting temperature (heating not shown).
- a piston 23 depresses the melt, whereby the cutting disc 20 is raised and the foam content the chamber 2 is pressed into the form 8.
- FIG. 6 shows a multiple application of modules according to FIG. 4 or 5.
- One or - as shown in Fig. 6 two forms 24, 25 (possibly more) of a plurality fed by heated chambers 2 'with metal foam.
- the single ones Chambers 2 ' can be inductively heated and the formed Metal foam synchronously or via a control Feed into the mold or molds with a time delay.
- Foam formation in the chamber or chambers according to FIG. 1 to 6 can also take place according to FIG. 7 in that the chambers 2 or the chambers of a jacket made of non-metallic foam Melt 26 is or are surrounded for heating.
- the Melt 26 is heated in an oven 27. It follows an ideal heating condition due to the large heat potential of the melt of the powder metallurgical semi-finished product, whereby the Uniformity of frothing and the frothing time positive to be influenced.
- the shape of the semi-finished product is particularly important.
- Another variant of the invention is that in the chamber 2 inserted semi-finished tube 3 'through the piston 6 to press against the nozzle plate 5 with a defined force. As soon as the semi-finished product reaches the melting point and thus starts to foam, it loses its firmness and the Piston 6 can press the processed foam into the mold. It may be appropriate to apply the force to the piston and thus the shooting speed of the foam into the form 8 too change as soon as the piston 6 starts to move.
- This Measure results in a very simple control of the system is capable of any scatter, for example in the preheating temperature of the semi-finished product, in its heating rate or even in the melting point of the semi-finished alloy, since only that for the injection time A corresponding viscosity of the foam melt is reached is decisive and all other parameters are disregarded stay.
- This measure is very simple achieved a very even foam formation. It is also much easier, the system on another foam casting switch, since the otherwise very complex Optimization of the production parameters considerably simplified and changeover times can be drastically reduced.
- FIG. 8 shows another alternative with several chambers 2 ', 2 ", which are electrical here, for example, according to FIG. 7
- For injection of the foam formed by powder metallurgy moves rotatable part additionally in the axial direction, so that the chamber 2 "directly connects to the (divided) form 4.
- the horizontal arrangement of the chambers 2 ', 2 " is advantageous because the piston 6 'is not in during foaming heated area and therefore only a small one Subject to temperature stress.
- the device can have two or more chambers 2 ', 2 ", the two or more Take positions (e.g. separate cleaning, loading with semi-finished products, heating and injecting). There can be a revolver or carousel construction with several stations, however also a linear shift back and forth using a Carriage construction may be provided.
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- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Mechanical Engineering (AREA)
- Powder Metallurgy (AREA)
- Manufacture Of Porous Articles, And Recovery And Treatment Of Waste Products (AREA)
- Manufacture Of Metal Powder And Suspensions Thereof (AREA)
- Cell Electrode Carriers And Collectors (AREA)
Description
Claims (14)
- Verfahren zum Gießen von Formteilen aus Metallschaum, beispielsweise Aluminiumschaum, der auf pulvermetallurgischem Wege durch Aufschäumen eines insbesondere zu einen Halbzeug, wie Stangen, Rohre oder zu Granulat kompaktierten Gemisches aus gasabspaltendem Treibmittel mit Metallpulver als Ausgangsmaterial unter Hitzeeinwirkung gebildet wird, wobei das Aufschäumen in einer beheizbaren Kammer außerhalb einer Gußform erfolgt, das Volumen des in die beheizbare Kammer eingebrachten pulvermetallurigschen Ausgangsmaterials, insbesondere Halbzeuges, in seiner mit der gesamten Schäumkapazität aufgeschäumten Phase dem Volumen einer Füllung der Gußform im wesentlichen entspricht und der gesamte Inhalt der Kammer als pulvermetallurgische Metallschaum-Schmelze in die Gußform gedrückt wird, in der vorzugsweise ein Aufschäumen mit der restlichen Schäumkapazität fortgesetzt bis zum vollständigen Ausfüllen der Gußform erfolgt, worauf der Schaumformteil in der Gußform abgekühlt und anschließend aus dieser entnommen wird.
- Verfahren nach Anspruch 1, dadurch gekennzeichnet, daß die Dichte des herzustellenden Gußformteils über den Befüllungsgrad der Kammer mit Ausgangsmaterial bzw. über das Kammervolumen einstellbar ist.
- Verfahren nach den Ansprüchen 1 oder 2, dadurch gekennzeichnet, daß die Kammer mit dem schaumbildenden Ausgangsmaterial gegenüber der Gußform in der Art eines Drehtrommelofens gedreht und zur Entleerung in die Gußform gedrückt, gegebenenfalls gekippt wird.
- Verfahren nach einen der Ansprüche 1 bis 3, dadurch gekennzeichnet, daß die Metallschaum-Schmelze in der Kammer von einem Kolben in die Gußform gedrückt wird, wobei der Zeitpunkt innerhalb des Verfahrensverlaufs, das Ausmaß der restlichen Schäumkapazität und damit die Struktur des Gußstückes bestimmend, vorgewählt wird.
- Verfahren nach einem der Ansprüche 1 bis 3, dadurch gekennzeichnet, daß die Metallschaum-Schmelze durch eine insbesondere metallschaumfremde Schmelze z.B. durch eine Salzschmelze, auf die ein Druck ausgeübt wird und auf der die pulvermetallurgisch entstehende Metallschaum-Schmelze, gegebenenfalls unter Zwischenlage eines Plättchens, schwimmt, angehoben und in die Gußform gedrückt wird.
- Verfahren nach einem der Ansprüche 1 bis 5, dadurch gekennzeichnet, daß die Metallschaum-Schmelze in eine Gußform aus nichtmetallischem Material, beispielsweise in eine Sandform, Keramikform, Gipsform oder dergleichen gedrückt wird.
- Verfahren nach einen der Ansprüche 1 bis 6, dadurch gekennzeichnet, daß die Metallschaum-Schmelze durch eine Düse zwischen Kammer und dem Hohlraum der Form gedrückt wird.
- Verfahren nach einem der Ansprüche 1 bis 7, dadurch gekennzeichnet, daß ein rohrförmiges bzw. rohrstutzenförmiges Halbzeug in die Kammer eingebracht wird.
- Verfahren nach Anspruch 8, dadurch gekennzeichnet, daß das rohrförmige oder rohrstützenförmige Halbzeug mit möglichst geringem Spiel zur Kammerinnenwand in die Kammer eingebracht wird und die Beheizung der Kammer vorzugsweise elektrisch, insbesondere induktiv erfolgt.
- Verfahren nach einem der Ansprüche 8 oder 9, dadurch gekennzeichnet, daß das Halbzeugrohr zumindest in der Endphase des Aufheizvorganges durch den Kolben mit einer definierten und einstellbaren Kraft gegen die Düsenplatte gepreßt wird, sodaß der Einspritzvorgang in die Form eingeleitet wird, sobald das Halbzeug den Schmelzpunkt erreicht und damit aufschäumt.
- Verfahren nach einem der Ansprüche 1 bis 10, dadurch gekennzeichnet, daß zur Reduktion von Oxidschichten das Aufheizen bzw. eine Vorwärmung des Halbzeuges unter Schutzgas durchgeführt wird und vorzugsweise daß die Kammer mit Schutzgas gespült wird.
- Verfahren nach einem der Ansprüche 1 bis 11, dadurch gekennzeichnet, daß die pulvermetallurgische Schaum-Schmelze mehrerer Kammern, die parallelgeschaltet sind, gleichzeitig oder über eine Steuerung zeitversetzt über mehrere Anschnitte in den Hohlraum einer oder mehrerer Formen gedrückt wird.
- Vorrichtung zur Durchführung des Verfahrens nach einem der Ansprüche 1 bis 12 mit einer beheizbaren Kammer (2), in der ein Kolben (6) verschiebbar ist und an die eine Gußform (8) zur Übernahme von Aluminiumschaum aus der Kammer (2) angeschlossen ist, dadurch gekennzeichnet, daß die Kammer (2, 2') von einem Mantel für fremdbeheizte, metallschaumfremde Schmelze (26) zur Beheizung der Kammer (2,2') umgeben ist.
- Vorrichtung zur Durchführung des Verfahrens nach einem der Ansprüche 1 bis 12 mit einer beheizbaren Kammer (2), in der ein Kolben (6) verschiebbar ist und an die eine Gußform (8) zur Übernahme von Aluminiumschaum aus der Kammer (2) angeschlossen ist bzw. gemäß der Vorrichtung nach Anspruch 13, dadurch gekennzeichnet, daß eine oder mehrere Kammern (2, 2') auf einem Schlitten oder Karussell angeordnet und aus einer Lade- bzw. Reinigungsposition in die Aufheizposition für das geladene Halbzeug gegenüber einem Anschluß an eine Form verschiebbar oder drehbar sind.
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 EP0804982A2 (de) | 1997-11-05 |
| EP0804982A3 EP0804982A3 (de) | 1997-11-12 |
| EP0804982B1 true EP0804982B1 (de) | 2002-11-27 |
Family
ID=3498012
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP97890073A Expired - Lifetime EP0804982B1 (de) | 1996-04-19 | 1997-04-18 | Verfahren zur Herstellung von Formteilen aus Metallschaum |
Country Status (5)
| Country | Link |
|---|---|
| US (1) | US5865237A (de) |
| EP (1) | EP0804982B1 (de) |
| JP (1) | JPH1029052A (de) |
| AT (2) | AT406027B (de) |
| DE (1) | DE59708794D1 (de) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102010040249A1 (de) | 2010-09-03 | 2012-03-08 | Man Diesel & Turbo Se | Doppelwandiges Rohr |
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| AT408317B (de) * | 1998-04-09 | 2001-10-25 | Mepura Metallpulver | Verfahren zur herstellung von schaummetall-formkörpern |
| US6605368B2 (en) | 1999-12-21 | 2003-08-12 | Laura Lisa Smith | Cookware vessel |
| NO311708B1 (no) | 2000-02-25 | 2002-01-14 | Cymat Corp | Fremgangsmåte og utstyr for tildannelse av stöpte produkter |
| DE10042569C1 (de) * | 2000-08-25 | 2002-04-04 | Christian Steglich | Verfahren und Einrichtung zur Herstellung von Verbundwerkstoffen mit einem Kern aus Metallschaum |
| DE10045494C2 (de) * | 2000-09-13 | 2002-07-18 | 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 |
| 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 |
| DE10123899A1 (de) * | 2001-05-16 | 2002-11-21 | Goldschmidt Ag Th | Verfahren zur Herstellung von Metallformteilen |
| EP1397223B1 (de) * | 2001-05-19 | 2007-03-21 | Goldschmidt GmbH | Herstellung von metallschäumen |
| DE10127716A1 (de) | 2001-06-07 | 2002-12-12 | Goldschmidt Ag Th | Verfahren zur Herstellung von Metall/Metallschaum-Verbundbauteilen |
| US6660224B2 (en) | 2001-08-16 | 2003-12-09 | National Research Council Of Canada | Method of making open cell material |
| DE60210098T3 (de) * | 2001-08-17 | 2012-10-11 | Cymat Technologies Ltd. | Verfahren zum niederdruckgiessen von metallschaum |
| US7108828B2 (en) * | 2001-08-27 | 2006-09-19 | National Research Council Of Canada | Method of making open cell material |
| DE10161563C1 (de) * | 2001-12-14 | 2003-06-05 | Eads Deutschland Gmbh | Vorrichtung und Verfahren zum in-situ Ausschäumen von Hohlprofilen mit Metallschaum |
| KR20040075964A (ko) * | 2002-02-01 | 2004-08-30 | 싸이매트 코프. | 금속 폼 주조 장치 및 방법 |
| KR101024308B1 (ko) * | 2002-03-04 | 2011-03-31 | 싸이매트 코프. | 금속 폼을 제조하기 위한 시일드 임펠러 및 시스템 |
| AU2003233611A1 (en) * | 2002-05-20 | 2003-12-12 | Liquidmetal Technologies, Inc. | Foamed structures of bulk-solidifying amorphous alloys |
| 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 |
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| USRE44426E1 (en) * | 2003-04-14 | 2013-08-13 | Crucible Intellectual Property, Llc | 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 |
| WO2005009729A2 (en) * | 2003-07-24 | 2005-02-03 | Tecomet, Inc. | Assembled non-random foams |
| WO2006021082A1 (en) * | 2004-08-24 | 2006-03-02 | Cymat Corp. | Apparatus for metal foam casting and methods therefor |
| CN100509373C (zh) * | 2005-03-17 | 2009-07-08 | 严培义 | 粉末成形机充填调节限位装置 |
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| 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 |
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| US7699092B2 (en) * | 2007-06-18 | 2010-04-20 | Husky Injection Molding Systems Ltd. | Metal-molding system and process for making foamed alloy |
| DE102008000100B4 (de) | 2008-01-18 | 2013-10-17 | Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V. | Verfahren zur Herstellung eines leichtgewichtigen Grünkörpers, danach hergestellter leichtgewichtiger Grünkörper und Verfahren zur Herstellung eines leichtgewichtigen Formkörpers |
| 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 |
| MX394004B (es) * | 2015-08-28 | 2025-03-24 | Ustav Materialov A Mech Strojov Sav | Metodo de produccion del componente a partir de espuma metalica, componente producido mediante dicho metodo y molde para la realizacion de dicho metodo. |
| CN107442775B (zh) * | 2017-07-14 | 2019-03-22 | 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 |
| 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 |
| CN119114943B (zh) * | 2024-11-12 | 2025-03-04 | 陕西鼎基能源科技有限公司 | 一种制氢用泡沫金属催化床的粉末冶金法制备装置及方法 |
Family Cites Families (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE1164102B (de) * | 1956-03-19 | 1964-02-27 | Lor Corp | Verfahren zur Herstellung von Metallschaumkoerpern |
| US3087807A (en) * | 1959-12-04 | 1963-04-30 | United Aircraft Corp | Method of making foamed metal |
| DE4101630A1 (de) * | 1990-06-08 | 1991-12-12 | Fraunhofer Ges Forschung | Verfahren zur herstellung aufschaeumbarer metallkoerper und verwendung derselben |
| DE4018360C1 (en) * | 1990-06-08 | 1991-05-29 | Fraunhofer-Gesellschaft Zur Foerderung Der Angewandten Forschung Ev, 8000 Muenchen, De | Porous metal body prodn. - involves compaction at low temp. followed by heating to near melting point of metal |
| US5281251A (en) * | 1992-11-04 | 1994-01-25 | Alcan International Limited | Process for shape casting of particle stabilized metal foam |
| DE4424157C2 (de) * | 1993-07-29 | 1996-08-14 | Fraunhofer Ges Forschung | Verfahren zur Herstellung poröser metallischer Werkstoffe mit anisotropen thermischen und elektrischen Leitfähigkeiten |
| DE4326982C1 (de) * | 1993-08-11 | 1995-02-09 | Alcan Gmbh | Verfahren und Vorrichtung zur Herstellung von Formteilen aus Metallschaum |
| DE4340791A1 (de) * | 1993-11-23 | 1995-05-24 | Admos Gleitlager Gmbh Berlin | Verfahren zur Herstellung von porösen Metallkörpern |
-
1996
- 1996-04-19 AT AT0071996A patent/AT406027B/de not_active IP Right Cessation
-
1997
- 1997-04-18 US US08/844,227 patent/US5865237A/en not_active Expired - Lifetime
- 1997-04-18 AT AT97890073T patent/ATE228411T1/de active
- 1997-04-18 EP EP97890073A patent/EP0804982B1/de not_active Expired - Lifetime
- 1997-04-18 DE DE59708794T patent/DE59708794D1/de not_active Expired - Lifetime
- 1997-04-18 JP JP9101165A patent/JPH1029052A/ja active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102010040249A1 (de) | 2010-09-03 | 2012-03-08 | Man Diesel & Turbo Se | Doppelwandiges Rohr |
Also Published As
| Publication number | Publication date |
|---|---|
| ATE228411T1 (de) | 2002-12-15 |
| JPH1029052A (ja) | 1998-02-03 |
| EP0804982A2 (de) | 1997-11-05 |
| ATA71996A (de) | 1999-06-15 |
| US5865237A (en) | 1999-02-02 |
| EP0804982A3 (de) | 1997-11-12 |
| AT406027B (de) | 2000-01-25 |
| DE59708794D1 (de) | 2003-01-09 |
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