WO2006048075A2 - Procede de production de produits a partir d'un materiau composite metallique - Google Patents

Procede de production de produits a partir d'un materiau composite metallique Download PDF

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Publication number
WO2006048075A2
WO2006048075A2 PCT/EP2005/010021 EP2005010021W WO2006048075A2 WO 2006048075 A2 WO2006048075 A2 WO 2006048075A2 EP 2005010021 W EP2005010021 W EP 2005010021W WO 2006048075 A2 WO2006048075 A2 WO 2006048075A2
Authority
WO
WIPO (PCT)
Prior art keywords
metal
takes place
aggregate
hydride
powder
Prior art date
Application number
PCT/EP2005/010021
Other languages
German (de)
English (en)
Other versions
WO2006048075A3 (fr
Inventor
Norbert Hort
Hajo Dieringa
Karl Ulrich Kainer
Eckard Aust
Wolfgang Limberg
Original Assignee
Gkss-Forschungszentrum Geesthacht 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 Gkss-Forschungszentrum Geesthacht Gmbh filed Critical Gkss-Forschungszentrum Geesthacht Gmbh
Priority to EP05785203A priority Critical patent/EP1809433A2/fr
Publication of WO2006048075A2 publication Critical patent/WO2006048075A2/fr
Publication of WO2006048075A3 publication Critical patent/WO2006048075A3/fr

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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
    • B22F3/001—Starting from powder comprising reducible metal compounds
    • 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
    • B22F3/22—Manufacture of workpieces or articles from metallic powder characterised by the manner of compacting or sintering; Apparatus specially adapted therefor ; Presses and furnaces for producing castings from a slip
    • 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
    • B22F3/22—Manufacture of workpieces or articles from metallic powder characterised by the manner of compacting or sintering; Apparatus specially adapted therefor ; Presses and furnaces for producing castings from a slip
    • B22F3/225—Manufacture of workpieces or articles from metallic powder characterised by the manner of compacting or sintering; Apparatus specially adapted therefor ; Presses and furnaces for producing castings from a slip by injection molding
    • 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

Definitions

  • the invention relates to a process for the production of products from a metallic composite material of powdery starting materials in an injection mold using an injection molding process.
  • a further problem is that, when using powdery materials, they react strongly exothermically, in particular when they are oxidized, owing to their large surface area. For this reason, especially complex products in the form of components or semifinished products can not be produced by production methods based on pulverulent starting material, since the exothermic reaction can either damage the injection mold or cause a reaction with the reinforcing components, so that the properties of the product made of the composite material are impaired.
  • the invention has for its object to provide a method of the type mentioned, can be used with the exothermic reacting materials to her ⁇ len metallic Me ⁇ products made of composite materials, with high remuneration at the same time high volumes.
  • the problem is solved according to the. Invention in that a mixture of a metal hydride powder and / or a metal alloy hydride powder, an additive and a binder is produced and subsequently injected into a mold.
  • metal powder injection molding prevent the metal or the metal alloy from bonding with oxygen and reacting with it or with reinforcing components.
  • Such metals or metal alloys which react exothermically can be used in this way in the metal powder injection molding process, by means of which in particular the production of components having complex geometries is possible.
  • the metal of the metal hydride or a metal of the metal alloy hydride is preferably a metal of the second main group of the Periodic Table, more preferably magnesium.
  • This partially extremely exothermically reacting metal can be processed by the erfin ⁇ inventive method particularly well to a composite material.
  • the method can also be used for the processing of light metals, in particular Mau ⁇ group metals of the periodic table such as titanium.
  • additives are added to the metal hydride or the metal alloy hydride according to a further teaching of the invention.
  • These additives are preferably metal powders, which are particularly preferably aluminum.
  • Further preferred additives are nitrides, carbides or oxides, carbon, silicon, ceramics and / or SiC. All these substances are particularly preferably used separately or in combination, wherein they are added to the metal hydride or metal alloy hydride in powder form.
  • the additives react partially or completely with the metal hydride or metal alloy hydride. Alternatively, they are also within without reaction in the final product.
  • the additives in a sintering step which terminates the process in a particularly preferred manner have an effect on the sintering behavior of the material in a particularly advantageous manner, by forming sintered necks or eutrophic phases.
  • C, C + Si and SiC are mentioned here.
  • Another teaching of the invention provides that a filler is added in the mixture. This can be through . the volume mixing ratios of the individual constituents corresponding to the addition of a neutral material influence to a desired degree.
  • the proportion of aggregate mixture should preferably be 0 to 50 volume percent of the product.
  • the binder is preferably an organic material.
  • thermoplastic or thermosetting polymers thermo-alloying substances, waxes or surface-active substances or mixtures obtained therefrom are used as binder components. These are, in particular, polyamides, polyoxymethylene, polycarbonate, styrene-acrylonitrile copolymer, polyimide, natural waxes, and oils, thermosets, cyanates, polypropylenes, polyacetates, polyethylenes, ethylene-vinyl-acetates, polyvinylidene Alcohols, polyvinyl chlorides, polystyrenes, polymethyl methacrylates, arnine, mineral oils, water, agar, glycerol, polyvinyl butyryls, polybutyl methacrylates, cellulose, oleic acids, phthalates, paraffin waxes, carnauba wax , Ammonium polyacrylates, digylceride stearates and oleates, glyceryl monostea
  • a teaching of the invention provides that the volume ratio of the binder in the mixture O ⁇ x ⁇ 60%, preferably 20 ⁇ x ⁇ 50%. In such Presssver conception ⁇ nis is ensured that, after carrying out the procedural r Rens a metallic article having sufficiently good Festtechniks disconnect ⁇ generated.
  • a further teaching of the invention provides that the mixture is produced by introducing energy with simultaneous mixing.
  • the energy input is particularly preferably heat.
  • the mixing itself is particularly preferably carried out by kneading. Hier ⁇ by a homogeneous mixture is achieved.
  • the supplied heat is metered according to another teaching of the invention so that the binder is liquefied by the energy input.
  • By liquefying it is possible to produce a particularly homogeneous metal / metal alloy hydhydride / aggregate / binder mixture.
  • the powder surface is coated with the binder.
  • the Er ⁇ warming itself is carried out in a temperature range of 50 to 250 0 C.
  • a further teaching of the invention provides that debindering of the sprayed product is carried out.
  • Debinding can be carried out chemically and / or thermally.
  • a further teaching of the invention provides that the injected product is debindered in a wet-chemical bath. This is preferably a hexane bath.
  • the binder components present in the sprayed product are removed from the product.
  • the thermi ⁇ specific binder removal is carried out in a temperature range of 250 to 450 0 C more preferably 300 to 400 0 C.
  • a further teaching of the invention provides that, subsequent to the debinding, a sintering step follows. By sintering the final strength of the metallic product is brought about.
  • a further teaching of the invention provides that the sintering takes place below the melting temperature of the metal or the metal alloy. Exceeding the melting temperature would result in melting of the surfaces or melting of the entire product. In order to prevent the surface from melting, sintering, according to another teaching of the invention, takes place at the temperature of 80-90% of the melting temperature of the metal or metal alloy.
  • the individual process steps take place under a controlled atmosphere.
  • the controlled atmosphere can be produced by a protective gas, in particular argon, or the application of a vacuum.
  • the individual process steps, which are carried out under the controlled atmosphere, are the mixing, debinding and / or sintering.
  • a powder of magnesium hydride is kneaded in a kneader with a binder granulate consisting of wax, paraffin and polyethylene and silicon powder.
  • the proportion of the binder in the total mass of the feed docks to be created is 30% by weight.
  • Based on the total mass of magnesium hydride and silicon 16% by weight of Si and 84% by weight of Mg were charged.
  • the mixture is heated to 120 ° C and ne ⁇ tet about 2 hours, so that a homogeneous mass. This kneading process takes place under a protective gas atmosphere of argon.
  • the finished feedstock is cooled, forming a solid mass, which is then coarsely crushed to a particle size in the mm spectrum.
  • the cooled and comminuted feedstock is placed on an injection molding machine.
  • the mixture of magnesia and hydride binder is injected at 300 to 500 bar into an injection mold.
  • the injection mold is at 40 to 50 0 C, the injection unit 100 - 120 0 C is heated, so that the magnesium-binder mixture to a liquefied f technicallyfä ⁇ ELIGIBLE mass.
  • the injection molded component is cooled in the injection mold, the mold is opened and the component is removed.
  • the binder content must be removed so that the component can be sintered to a solid and solid body.
  • the component is palletized and treated in a first Entbind réelles Colour.
  • the wax and paraffin components of the binder are removed by immersing the component in a hexane bath.
  • the hexane bath has a temperature of 40 ° C.
  • the duration of the first debindering step depends on the design of the component, but is usually 1 to 4 hours.
  • the component is then removed from the hexane bath and allowed to drain. It is a porous body entstan ⁇ the, but more Binder feltteiIe, here in particular P ' o.lyethylene contains.
  • Bau ⁇ part is thermally treated in an oven at 400 ° C under high vacuum ( ⁇ 10 " 4 mbar).
  • the polyethylene decomposes and escapes through the pores.
  • the hydrogen of the magnesium hydride powder escapes through the pores from the component, whereby pure magnesium forms.
  • the component Upon completion of the debinding process, the component is usually sintered at 80% of the melting temperature. After completion of the sintering process, the component cools in the oven, wherein furthermore a high vacuum, which also existed during sintering, is present.
  • the resulting fabric has 41 volume percent Mg 2 Si and 59 volume percent Mg, thus providing an advantageous level of gain components of about 40 volume percent, resulting in a particularly ductile matrix of the composite.

Landscapes

  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Mechanical Engineering (AREA)
  • Powder Metallurgy (AREA)
  • Manufacture Of Alloys Or Alloy Compounds (AREA)

Abstract

L'invention concerne un procédé pour produire des produits à partir d'un matériau composite métallique constitué de matériaux de départ pulvérulents, dans un moule de moulage par injection, au moyen d'un procédé de moulage par injection. Ce procédé consiste : à produire un mélange comprenant une poudre hybride de métal et/ou une poudre hybride d'alliage métallique, une matière de charge, et un liant, puis ; à injecter ce mélange dans un moule.
PCT/EP2005/010021 2004-11-04 2005-09-16 Procede de production de produits a partir d'un materiau composite metallique WO2006048075A2 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP05785203A EP1809433A2 (fr) 2004-11-04 2005-09-16 Procede de production de produits a partir d'un materiau composite metallique

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102004053874A DE102004053874A1 (de) 2004-11-04 2004-11-04 Verfahren zum Herstellen von Erzeugnissen aus einem metallischen Verbundwerkstoff
DE102004053874.3 2004-11-04

Publications (2)

Publication Number Publication Date
WO2006048075A2 true WO2006048075A2 (fr) 2006-05-11
WO2006048075A3 WO2006048075A3 (fr) 2006-06-08

Family

ID=36127306

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/EP2005/010021 WO2006048075A2 (fr) 2004-11-04 2005-09-16 Procede de production de produits a partir d'un materiau composite metallique

Country Status (3)

Country Link
EP (1) EP1809433A2 (fr)
DE (1) DE102004053874A1 (fr)
WO (1) WO2006048075A2 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1925682A1 (fr) * 2006-10-20 2008-05-28 Gkss-Forschungszentrum Geesthacht Gmbh Procédé de production de composants pour moteurs à combustion ou turbines

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2061078B1 (fr) * 2007-11-16 2015-07-15 IQ evolution GmbH Corps de refroidissement

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5017217A (en) * 1986-02-03 1991-05-21 Eltech Systems Corporation Ceramic/metal or ceramic/ceramic composite article
JPH07188801A (ja) * 1993-12-28 1995-07-25 Sumitomo Metal Mining Co Ltd チタン焼結体の製造方法
US5441695A (en) * 1993-07-23 1995-08-15 Asulab S.A. Process for the manufacture by sintering of a titanium part and a decorative article made using a process of this type
WO2001019556A1 (fr) * 1999-09-14 2001-03-22 Stratec Medical Ag Melange de deux phases particulaires pour la production d'un compact vert apte au frittage a des temperatures elevees
WO2003056046A1 (fr) * 2001-12-27 2003-07-10 Gkss-Forschungszentrum Geesthacht Gmbh Fabrication par la metallurgie des poudres de corps au magnesium a partir de leur hydrure
US20050196312A1 (en) * 2004-03-08 2005-09-08 Nyberg Eric A. Feedstock composition and method of using same for powder metallurgy forming of reactive metals

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH02225602A (ja) * 1988-11-29 1990-09-07 Daicel Chem Ind Ltd 焼結金属の製造法
GB2249546B (en) * 1990-10-08 1995-07-05 Matsushita Electric Works Ltd Sintered ceramic-metal composite product and method of fabricating the same
DE19907118C1 (de) * 1999-02-19 2000-05-25 Krauss Maffei Kunststofftech Spritzgießvorrichtung für metallische Werkstoffe

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5017217A (en) * 1986-02-03 1991-05-21 Eltech Systems Corporation Ceramic/metal or ceramic/ceramic composite article
US5441695A (en) * 1993-07-23 1995-08-15 Asulab S.A. Process for the manufacture by sintering of a titanium part and a decorative article made using a process of this type
JPH07188801A (ja) * 1993-12-28 1995-07-25 Sumitomo Metal Mining Co Ltd チタン焼結体の製造方法
WO2001019556A1 (fr) * 1999-09-14 2001-03-22 Stratec Medical Ag Melange de deux phases particulaires pour la production d'un compact vert apte au frittage a des temperatures elevees
WO2003056046A1 (fr) * 2001-12-27 2003-07-10 Gkss-Forschungszentrum Geesthacht Gmbh Fabrication par la metallurgie des poudres de corps au magnesium a partir de leur hydrure
US20050196312A1 (en) * 2004-03-08 2005-09-08 Nyberg Eric A. Feedstock composition and method of using same for powder metallurgy forming of reactive metals

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
PATENT ABSTRACTS OF JAPAN Bd. 1995, Nr. 10, 30. November 1995 (1995-11-30) -& JP 07 188801 A (SUMITOMO METAL MINING CO LTD), 25. Juli 1995 (1995-07-25) *

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1925682A1 (fr) * 2006-10-20 2008-05-28 Gkss-Forschungszentrum Geesthacht Gmbh Procédé de production de composants pour moteurs à combustion ou turbines
CN101413410B (zh) * 2006-10-20 2012-06-27 Gkss-盖斯特哈赫特研究中心有限责任公司 生产用于内燃机或涡轮机的构件的方法

Also Published As

Publication number Publication date
WO2006048075A3 (fr) 2006-06-08
DE102004053874A1 (de) 2006-05-11
EP1809433A2 (fr) 2007-07-25

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