EP0559097B1 - Verfahren zur Herstellung von Metallschaumkörpern - Google Patents

Verfahren zur Herstellung von Metallschaumkörpern Download PDF

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Publication number
EP0559097B1
EP0559097B1 EP93103088A EP93103088A EP0559097B1 EP 0559097 B1 EP0559097 B1 EP 0559097B1 EP 93103088 A EP93103088 A EP 93103088A EP 93103088 A EP93103088 A EP 93103088A EP 0559097 B1 EP0559097 B1 EP 0559097B1
Authority
EP
European Patent Office
Prior art keywords
powder
matrix
metal powder
extruded
processed
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.)
Revoked
Application number
EP93103088A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP0559097A2 (de
EP0559097A3 (en
Inventor
Helmut Dipl.-Ing. Wörz
Hans Peter Dr. Degischer
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.)
Mepura Metallpulver GmbH
Original Assignee
Mepura Metallpulver 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
Family has litigation
First worldwide family litigation filed litigation Critical https://patents.darts-ip.com/?family=25912330&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=EP0559097(B1) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Application filed by Mepura Metallpulver GmbH filed Critical Mepura Metallpulver GmbH
Publication of EP0559097A2 publication Critical patent/EP0559097A2/de
Publication of EP0559097A3 publication Critical patent/EP0559097A3/de
Application granted granted Critical
Publication of EP0559097B1 publication Critical patent/EP0559097B1/de
Anticipated expiration legal-status Critical
Revoked legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21C—MANUFACTURE OF METAL SHEETS, WIRE, RODS, TUBES, PROFILES OR LIKE SEMI-MANUFACTURED PRODUCTS OTHERWISE THAN BY ROLLING; AUXILIARY OPERATIONS USED IN CONNECTION WITH METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL
    • B21C23/00—Extruding metal; Impact extrusion
    • B21C23/005—Continuous extrusion starting from solid state material
    • 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
    • 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
    • B22F3/20—Manufacture of workpieces or articles from metallic powder characterised by the manner of compacting or sintering; Apparatus specially adapted therefor ; Presses and furnaces by extruding
    • 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
    • B22F2998/10—Processes characterised by the sequence of their steps

Definitions

  • the invention relates to a method for producing metal foam bodies according to the preamble of claim 1.
  • a method of this kind is known from US Pat. No. 3,087,807.
  • the precompacted or not precompacted mixture of metal powder (aluminum powder) and blowing agent powder is batch-wise, i.e. in measured quantities, filled in a cylindrical cavity and extruded through the opening of a die by means of a press ram.
  • the material to be extruded in the cavity is brought to a temperature suitable for extrusion by means of resistance or induction heating.
  • a disadvantage of the known method is that the length of the extrudates is limited and that even when preparing the amount of powder to be extruded, it must be dimensioned according to the desired length of the extrudate.
  • the capacity of the cylindrical cavity sets an upper limit and allows only relatively short extrusions, reinforced if you want to avoid precompacting the powder.
  • the object of the invention is to provide a method of the type mentioned at the outset with which extrudates of any length can be produced in a simple manner.
  • blowing agents can also be used which have a relatively low decomposition temperature at normal pressure, and it surprisingly proves that a wall speed can be found in principle at which the temperature and the pressure which builds up are coordinated with one another so that, on the one hand, for precompacting Favorable temperature conditions are present and on the other hand there is no undesirable decomposition of the blowing agent in this phase is coming.
  • the compression pressure that builds up and the temperature that arises in this way naturally also depend on the resistance of the extrusion die, ie also on the degree of deformation that the extrusion die brings about.
  • This degree of deformation expressed as the ratio of the inlet cross-section to the outlet cross-section, should be at least 5: 1, preferably at least 8: 1, for the reason that otherwise the metal powder particles will not be sufficiently firmly bonded, especially in the core of the extruded strand that when the extruded part is heated for foaming, the gas generated with the blowing agent can evaporate in areas and the required foaming does not occur there.
  • coherent ratios of compression and temperature can also be achieved on the side in front of the extrusion die.
  • grain sizes of the powder of less than or equal to 3000 ⁇ m, preferably less than or equal to 600 ⁇ m, most preferably less than or equal to 300 ⁇ m, have proven to be advantageous.
  • a favorable mixing ratio of the metal alloy with titanium hydride as the blowing agent was 0.1 to 1.0% by weight, preferably 0.3-0.4% by weight, titanium hydride, the remainder being aluminum or aluminum alloy.
  • the exit speed was approximately 20 m / min, which is approximately equivalent to 200 kg / h of foamable aluminum-based material.
  • a device for performing the continuous extrusion can be constructed as shown in the single figure: a spline gear, comparable in shape (not necessarily in size) to a pulley, and approximately with a U-shaped groove, rotates in a hollow cylinder so that the groove surface with part of the cylinder surface forms a channel with a surface, part of which is movable.
  • a spline gear comparable in shape (not necessarily in size) to a pulley, and approximately with a U-shaped groove, rotates in a hollow cylinder so that the groove surface with part of the cylinder surface forms a channel with a surface, part of which is movable.
  • the axis of the sprocket and thus of the cylinder is expediently horizontal. The powder is poured in from above.
  • the channel is closed by a counter-holder, against which the powder which has been transported in the channel from the inlet opening and which is already precompacted runs up and from which it flows into an am Counter holder laterally arranged, approximately radially facing extrusion die is deflected.
  • the powder is carried in the channel by friction between the rotating spur gear and powder.
  • iron, copper and nickel are possible as metals.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Manufacturing & Machinery (AREA)
  • Powder Metallurgy (AREA)
EP93103088A 1992-02-28 1993-02-26 Verfahren zur Herstellung von Metallschaumkörpern Revoked EP0559097B1 (de)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE4206303 1992-02-28
DE4206303A DE4206303C1 (https=) 1992-02-28 1992-02-28
US08/051,397 US5393485A (en) 1992-02-28 1993-04-23 Process for the production of foamable metal elements

Publications (3)

Publication Number Publication Date
EP0559097A2 EP0559097A2 (de) 1993-09-08
EP0559097A3 EP0559097A3 (en) 1993-09-29
EP0559097B1 true EP0559097B1 (de) 1997-05-07

Family

ID=25912330

Family Applications (1)

Application Number Title Priority Date Filing Date
EP93103088A Revoked EP0559097B1 (de) 1992-02-28 1993-02-26 Verfahren zur Herstellung von Metallschaumkörpern

Country Status (3)

Country Link
US (1) US5393485A (https=)
EP (1) EP0559097B1 (https=)
DE (1) DE4206303C1 (https=)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102006004622A1 (de) * 2006-02-01 2007-08-09 Alulight International Gmbh Kontinuierliches Strangpressverfahren

Families Citing this family (27)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19501659C1 (de) * 1995-01-20 1996-05-15 Daimler Benz Ag Verfahren zur Herstellung eines Metallschaumteils
DE19612781C1 (de) * 1996-03-29 1997-08-21 Karmann Gmbh W Bauteil aus metallischem Schaumwerkstoff, Verfahren zum Endformen dieses Bauteils und Vorrichtung zur Ausführung des Verfahrens
DE19734394C2 (de) * 1996-08-13 2003-06-18 Friedrich Wilhelm Bessel Inst Verfahren und Vorrichtung zur Herstellung von Metallschaum
AT405946B (de) * 1998-01-16 1999-12-27 Illichmann Gmbh Leichtmetallgu Verfahren zum herstellen von pulvermetallurgischem halbzeug
DE19811612C1 (de) * 1998-03-17 1999-02-25 Siemens Ag Portal für Positionier- und Bestücksysteme und Verfahren zur Herstellung von Portalen
AT408317B (de) * 1998-04-09 2001-10-25 Mepura Metallpulver Verfahren zur herstellung von schaummetall-formkörpern
US6168072B1 (en) 1998-10-21 2001-01-02 The Boeing Company Expansion agent assisted diffusion bonding
DE19907855C1 (de) * 1999-02-24 2000-09-21 Goldschmidt Ag Th Herstellung von Metallschäumen
EP1422303B1 (de) * 1999-06-23 2008-12-10 Grillo-Werke AG Verfahren zur Herstellung von Metallschaumkörpern auf Basis von Zink
NL1014116C2 (nl) * 2000-01-19 2001-07-20 Corus Aluminium Walzprod Gmbh Werkwijze en inrichting voor het vormen van een laminaat van gecomprimeerd metaalpoeder met een schuimmiddel tussen twee metaallagen, en daarmee gevormd produkt.
DE10024776C1 (de) 2000-05-19 2001-09-06 Goldschmidt Ag Th Verwendung von Metallhydrid-behandeltem Zink in der metallorganischen Synthese
DE10045494C2 (de) * 2000-09-13 2002-07-18 Neue Materialien Fuerth Gmbh Verfahren zum Herstellen eines Formkörpers aus Metallschaum
CA2344088A1 (en) * 2001-01-16 2002-07-16 Unknown A method and an apparatus for production of a foam metal
US6524522B2 (en) 2001-03-07 2003-02-25 Advanced Ceramics Research, Inc. Method for preparation of metallic foam products and products made
US6852272B2 (en) * 2001-03-07 2005-02-08 Advanced Ceramics Research, Inc. Method for preparation of metallic and ceramic foam products and products made
ATE357304T1 (de) * 2001-05-19 2007-04-15 Goldschmidt Gmbh Herstellung von metallschäumen
RU2200647C1 (ru) * 2001-07-17 2003-03-20 Литвинцев Александр Иванович Способ производства пористых полуфабрикатов из порошков алюминиевых сплавов
US6924044B2 (en) * 2001-08-14 2005-08-02 Snag, Llc Tin-silver coatings
US6660224B2 (en) * 2001-08-16 2003-12-09 National Research Council Of Canada Method of making open cell material
US7108828B2 (en) * 2001-08-27 2006-09-19 National Research Council Of Canada Method of making open cell material
DE10357656A1 (de) * 2003-12-10 2005-07-07 Mtu Aero Engines Gmbh Verfahren zur Herstellung von Gasturbinenbauteilen und Bauteil für eine Gasturbine
US20070154731A1 (en) * 2005-12-29 2007-07-05 Serguei Vatchiants Aluminum-based composite materials and methods of preparation thereof
US20080308300A1 (en) * 2007-06-18 2008-12-18 Conti Mark A Method of manufacturing electrically conductive strips
CA2713560C (en) * 2010-08-23 2019-10-29 Jangofish Holdings Inc. Process and method for producing foamable metals
RU2491154C1 (ru) * 2012-05-17 2013-08-27 Открытое акционерное общество Акционерная холдинговая компания "Всероссийский научно-исследовательский и проектно-конструкторский институт металлургического машиностроения имени академика Целикова" (ОАО АХК "ВНИИМЕТМАШ") Устройство укладки листа компактированной порошковой смеси в форму для вспенивания и извлечения из нее панели пеноалюминия
CN102773302A (zh) * 2012-08-03 2012-11-14 广西大学 泡沫铝杆的连续制备方法
CN104550972B (zh) * 2014-12-05 2017-02-22 沈阳工业大学 一种泡沫铝异型件的制备方法

Family Cites Families (11)

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DE1164102B (de) * 1956-03-19 1964-02-27 Lor Corp Verfahren zur Herstellung von Metallschaumkoerpern
US2937938A (en) * 1957-12-12 1960-05-24 Lor Corp Production of metal foam
US3087807A (en) * 1959-12-04 1963-04-30 United Aircraft Corp Method of making foamed metal
FR1248935A (fr) * 1960-02-19 1960-12-23 Dow Chemical Co Métal transformé à structure cellulaire et procédé de fabrication de ce métal
GB2015035A (en) * 1978-02-17 1979-09-05 Bicc Ltd Fabrication of Metallic Materials
US4601325A (en) * 1982-11-26 1986-07-22 Alform Alloys Limited Extrusion
GB2134428B (en) * 1983-02-03 1987-06-17 Metal Box Plc Continuous extrusion of metals
JPS59183927A (ja) * 1983-04-04 1984-10-19 Sumitomo Heavy Ind Ltd 回転ホイ−ル式金属押出成形装置
DE3536154C1 (de) * 1985-10-10 1987-02-05 Krebsoege Gmbh Sintermetall Vorrichtung zum plastischen Stauchen poroeser rotationssymmetrischer Sintermetallteile
US5015438A (en) * 1990-01-02 1991-05-14 Olin Corporation Extrusion of metals
DE4101630A1 (de) * 1990-06-08 1991-12-12 Fraunhofer Ges Forschung Verfahren zur herstellung aufschaeumbarer metallkoerper und verwendung derselben

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
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

Also Published As

Publication number Publication date
EP0559097A2 (de) 1993-09-08
US5393485A (en) 1995-02-28
EP0559097A3 (en) 1993-09-29
DE4206303C1 (https=) 1993-06-17

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