EP2014394A1 - Procédé d'extruder une poudre de métal, qu'est chaufé par des micro-ondes - Google Patents

Procédé d'extruder une poudre de métal, qu'est chaufé par des micro-ondes Download PDF

Info

Publication number
EP2014394A1
EP2014394A1 EP07405206A EP07405206A EP2014394A1 EP 2014394 A1 EP2014394 A1 EP 2014394A1 EP 07405206 A EP07405206 A EP 07405206A EP 07405206 A EP07405206 A EP 07405206A EP 2014394 A1 EP2014394 A1 EP 2014394A1
Authority
EP
European Patent Office
Prior art keywords
powder
powder bed
heated
metal
microwave
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.)
Withdrawn
Application number
EP07405206A
Other languages
German (de)
English (en)
Inventor
Horst Adams
Michael Dvorak
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.)
3A Composites International AG
Original Assignee
Alcan Technology and Management Ltd
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 Alcan Technology and Management Ltd filed Critical Alcan Technology and Management Ltd
Priority to EP07405206A priority Critical patent/EP2014394A1/fr
Priority to JP2010515393A priority patent/JP2010533238A/ja
Priority to EP08784627A priority patent/EP2178663A2/fr
Priority to US12/668,952 priority patent/US20100183469A1/en
Priority to PCT/EP2008/005489 priority patent/WO2009010201A2/fr
Priority to BRPI0813720-0A2A priority patent/BRPI0813720A2/pt
Priority to CA 2692925 priority patent/CA2692925A1/fr
Priority to CN200880024157.0A priority patent/CN101743080A/zh
Publication of EP2014394A1 publication Critical patent/EP2014394A1/fr
Withdrawn legal-status Critical Current

Links

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
    • B22F3/20—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
    • 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
    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22C—ALLOYS
    • C22C26/00—Alloys containing diamond or cubic or wurtzitic boron nitride, fullerenes or carbon nanotubes
    • C22C2026/002—Carbon nanotubes

Definitions

  • the invention relates to a method for producing a profile by extrusion of powder of metal and / or metal alloys, in which method a powder bed is heated to an extrusion temperature below the melting temperature of the powder and pressed under pressure through an opening of a die to the profile.
  • a billet is pressed as a metallic block material through the opening of a die in an extrusion press normally.
  • the powder beds are usually encapsulated in a container because of their low heat conduction prior to extrusion, and typically, e.g. by cold isostatic pressing, compacted.
  • the poor heat conduction of the powder beds is made even more difficult by the oxide layers acting as an insulator on the metal particles. Due to the higher density and encapsulation during pressing, the heat transfer improves, and the entire powder bed can be heated by external heat homogeneously to the desired extrusion temperature, however, the time until the powder bed has set by heat conduction a uniform temperature distribution, relatively long is. For this reason, the direct processing of metallic powders in extrusion presses has not been successful.
  • the intended for extrusion powder bed must be brought as homogeneous as possible to the desired extrusion temperature.
  • the powder bed according to the prior art is heated in a suitable container either inductively or in a convection oven. It is important to ensure that the heating process takes long enough to a possible ensure uniform temperature distribution within the powder bed. As a result of this long wait to ensure the temperature homogeneity occurs an undesirable delay in the production process. Furthermore, the risk of excessive heating in the outer surface layers of the bed and / or too long a heat treatment time increases. This is of particular importance when from at least two different components existing powder, so-called composite powder whose components at elevated temperature, either individually, eg by oxidation, or among themselves tend to undesirable reactions to be processed.
  • the invention has for its object to provide a method of the type mentioned, with which a rapid and uniform heating in all areas of the powder bed can be achieved.
  • At least one metal or a metal alloy of the powder is a reactive metal which spontaneously forms a natural oxide protective layer on a free surface and / or the powder homogeneously contains fibrous particles which absorb microwaves, distributed in the bulk of the powder the powder bed is heated by microwave irradiation to extrusion temperature.
  • the cavities between the powder particles including the oxide layers act as so-called "wave guides" for the microwaves, since they correspond in dimension to the wavelength of the microwave radiation.
  • the microwave radiation can penetrate unhindered and with multiple reflection the entire area of the powder bed homogeneous.
  • the density of the powder bed or the dimension of the cavities between the powder particles including the oxide layers can be tuned by an appropriate compression of the powder bed in addition to the wavelength of the microwave radiation.
  • the powder in addition to the metal particles, also absorbs microwave radiation energy absorbing fibrous components, such as e.g. Contains carbon nanotubes (CNTs), they act locally as receiving antennas or absorber for the microwave radiation.
  • fibrous components such as e.g. Contains carbon nanotubes (CNTs)
  • they act locally as receiving antennas or absorber for the microwave radiation.
  • the fibrous constituents are homogeneously distributed in the powder bed or, in the optimal case, even integrated at least partially into the metallic powder particles, a very effective and homogeneous heating of the entire bed can be achieved in this way. This effect can be enhanced by tuning the length of the fibrous components as closely as possible to the wavelength of the microwave radiation.
  • the powder bed when heated to the extrusion temperature, is first irradiated with low microwave energy at a varying frequency and the absorbed energy is measured as a function of the frequency.
  • the so-called resonance frequency results in a maximum of the absorbed energy. With this frequency, the powder bed is now irradiated with high microwave energy, resulting in an effective Energyeinkoppelung.
  • the low frequency microwave sweep frequency sweep and the subsequent high microwave energy sweep at the resonant frequency to heat the powder bed to extrusion temperature can also be fully automated by control electronics so that the optimum frequency of injected microwave energy is always adjusted for different powder bulk and powder compositions.
  • the powder bed can first be precompressed, for example, by means of a screw conveyor in an intermediate container. Subsequently, the thus pre-compressed powder bed in the intermediate container is irradiated with the resonant frequency and thereby heated quickly and uniformly to extrusion temperature. By means of a punch the precompressed and heated to extrusion temperature powder bed is pressed out of the intermediate container through the die opening. In this way, a continuous extrusion of metallic powder material can be realized.

Landscapes

  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Mechanical Engineering (AREA)
  • Powder Metallurgy (AREA)
  • Extrusion Of Metal (AREA)
  • Manufacture Of Alloys Or Alloy Compounds (AREA)
  • Constitution Of High-Frequency Heating (AREA)
EP07405206A 2007-07-13 2007-07-13 Procédé d'extruder une poudre de métal, qu'est chaufé par des micro-ondes Withdrawn EP2014394A1 (fr)

Priority Applications (8)

Application Number Priority Date Filing Date Title
EP07405206A EP2014394A1 (fr) 2007-07-13 2007-07-13 Procédé d'extruder une poudre de métal, qu'est chaufé par des micro-ondes
JP2010515393A JP2010533238A (ja) 2007-07-13 2008-07-04 押し出し異形材を製造するための粉末冶金方法
EP08784627A EP2178663A2 (fr) 2007-07-13 2008-07-04 Procédé d'extruder une poudre de métal, qu'est chaufé par des micro-ondes
US12/668,952 US20100183469A1 (en) 2007-07-13 2008-07-04 Powder metallurgy method for producing an extruded profile
PCT/EP2008/005489 WO2009010201A2 (fr) 2007-07-13 2008-07-04 Procédé relevant de la métallurgie des poudres pour produire un profilé extrudé
BRPI0813720-0A2A BRPI0813720A2 (pt) 2007-07-13 2008-07-04 Método de metalurgia do pó para produção de um perfil estrudado
CA 2692925 CA2692925A1 (fr) 2007-07-13 2008-07-04 Procede relevant de la metallurgie des poudres pour produire un profile extrude
CN200880024157.0A CN101743080A (zh) 2007-07-13 2008-07-04 挤压经微波加热的金属粉末的方法

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP07405206A EP2014394A1 (fr) 2007-07-13 2007-07-13 Procédé d'extruder une poudre de métal, qu'est chaufé par des micro-ondes

Publications (1)

Publication Number Publication Date
EP2014394A1 true EP2014394A1 (fr) 2009-01-14

Family

ID=38740313

Family Applications (2)

Application Number Title Priority Date Filing Date
EP07405206A Withdrawn EP2014394A1 (fr) 2007-07-13 2007-07-13 Procédé d'extruder une poudre de métal, qu'est chaufé par des micro-ondes
EP08784627A Withdrawn EP2178663A2 (fr) 2007-07-13 2008-07-04 Procédé d'extruder une poudre de métal, qu'est chaufé par des micro-ondes

Family Applications After (1)

Application Number Title Priority Date Filing Date
EP08784627A Withdrawn EP2178663A2 (fr) 2007-07-13 2008-07-04 Procédé d'extruder une poudre de métal, qu'est chaufé par des micro-ondes

Country Status (7)

Country Link
US (1) US20100183469A1 (fr)
EP (2) EP2014394A1 (fr)
JP (1) JP2010533238A (fr)
CN (1) CN101743080A (fr)
BR (1) BRPI0813720A2 (fr)
CA (1) CA2692925A1 (fr)
WO (1) WO2009010201A2 (fr)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106077656B (zh) * 2016-07-30 2018-05-25 上海交通大学 一种制备具有纳米结构钛制品的方法
US20220016842A1 (en) * 2018-12-19 2022-01-20 Hewlett-Packard Development Company, L.P. Determining a thermal footprint for a three-dimensional printed part
CN111940531B (zh) * 2020-06-23 2022-04-08 西安理工大学 一种冷挤压模具及其制备方法

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4313806A1 (de) * 1993-04-27 1994-11-03 Rene Salina Vorrichtung zum Erhitzen von Materialien in einer mit Mikrowellen bestrahlbaren Heizkammer und Verfahren zum Herstellen von keramischem Gut, bei dem das Rohgut mittels Mikrowellen getrocknet wird

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2419014C3 (de) * 1974-04-19 1985-08-01 Nyby Bruks AB, Nybybruk Verfahren zum Herstellen von Rohren aus rostfreiem Stahl und Anwendung des Verfahrens auf das Herstellen von Verbundrohren
JPS6393806A (ja) * 1986-10-07 1988-04-25 Ishikawajima Harima Heavy Ind Co Ltd 粉末押出プレス装置に於ける粉末供給装置
US4699657A (en) * 1986-11-03 1987-10-13 Worl-Tech Limited Manufacture of fine grain metal powder billets and composites
EP0327064A3 (fr) * 1988-02-05 1989-12-20 Anval Nyby Powder Ab Procédé de fabrication d'objets par la métallurgie des poudres, en particulier d'objets allongés tels que barres, profils, tubes, etc.
US6121595A (en) * 1997-01-06 2000-09-19 International Business Machines Corporation Applicator to provide uniform electric and magnetic fields over a large area and for continuous processing
JP4346360B2 (ja) * 2002-12-25 2009-10-21 東レ株式会社 電波吸収体用シート材および電波吸収体

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4313806A1 (de) * 1993-04-27 1994-11-03 Rene Salina Vorrichtung zum Erhitzen von Materialien in einer mit Mikrowellen bestrahlbaren Heizkammer und Verfahren zum Herstellen von keramischem Gut, bei dem das Rohgut mittels Mikrowellen getrocknet wird

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
WONG W L E ET AL: "Effect of hybrid length scales (micro + nano) of SiC reinforcement on the properties of magnesium", DIFFUSION AND DEFECT DATA. SOLID STATE DATA. PART B, SOLID STATE PHENOMENA, VADUZ, LI, vol. 111, 3 July 2005 (2005-07-03), pages 91 - 94, XP009093338, ISSN: 1012-0394 *

Also Published As

Publication number Publication date
CA2692925A1 (fr) 2009-01-22
WO2009010201A2 (fr) 2009-01-22
JP2010533238A (ja) 2010-10-21
BRPI0813720A2 (pt) 2014-12-30
CN101743080A (zh) 2010-06-16
WO2009010201A3 (fr) 2009-08-13
US20100183469A1 (en) 2010-07-22
EP2178663A2 (fr) 2010-04-28

Similar Documents

Publication Publication Date Title
EP2200797B1 (fr) Procédé de fabrication d'une pièce en matériau composite renforcé par des fibres
DE102008031587A1 (de) Vorrichtung zum schichtweisen Herstellen eines dreidimensionalen Objekts
DE2419014A1 (de) Verfahren zum herstellen von rohren oder dergl. und kapsel zum durchfuehren des verfahrens sowie nach dem verfahren hergestellte presslinge und rohre
DE112010002170T5 (de) Verfahren und vorrichtung zum herstellen eines schleifsteins mit metallbindung
DE102010008960A1 (de) Verfahren und Vorrichtung zum Herstellen eines dreidimensionalen Objekts, das sich insbesondere für den Einsatz in der Mikrotechnik eignet
EP0823190B1 (fr) Procede et dispositif de traitement thermique de materiaux dans un four a micro-ondes, et utilisation de ce procede et de ce dispositif
EP3200984A1 (fr) Procédé, dispositif et module de revêtement pour la réalisation d'un objet tridimensionnel
EP3268152A1 (fr) Procédé et dispositif de fabrication d'un objet tridimensionnel à qualité de surface améliorée
DE102013224693A1 (de) Verfahren zur beschleunigten Herstellung von Objekten mittels generativer Fertigung
EP2014394A1 (fr) Procédé d'extruder une poudre de métal, qu'est chaufé par des micro-ondes
WO2018210811A1 (fr) Procédé de fabrication de pièces par impression 3d
DE19928997C2 (de) Verfahren und Vorrichtung zum Schäumen von Metallen
DE102014117424A1 (de) Schmelzverfahren für Legierungen
DE1571510A1 (de) Verfahren zur Herstellung von Konstruktionsteilen aus schwer schmelzbarem Werkstoff
DE19953438A1 (de) Verfahren und Vorrichtung zur Herstellung von Bremsbelägen
DE2818418A1 (de) Verfahren zur herstellung von gegenstaenden aus feuerfesten pulverfoermigen diboriden
EP3423220B1 (fr) Procédé et dispositif destiné à la fabrication par impression 3d de pièces
DE3906268A1 (de) Verfahren und vorrichtung zum herstellen eines mehrheitlich aus keramischen materialien bestehenden profils
EP1652608B1 (fr) Procédé de fabrication d'une couche en cermet et produit revêtu
DE102014204105B3 (de) Vorrichtung zur Eintragung eines Eintragsgutes in einen Reaktor und ihre Verwendung
DE2749614C2 (fr)
DE2705824C3 (de) Verfahren zum isostatischen Heißpressen von Pulver oder kaltgepreßten Vorpreßkörpern
DE2154622A1 (de) Verfahren zur Herstellung von Kernbrennstoffpreßlingen
DE2712463C3 (de) Anwendung des Verfahrens der Hochfrequenz-Sinterung auf die Herstellung poröser Sinterkörper
DE102016211787A1 (de) Vorrichtung und Verfahren zum generativen Herstellen eines Werkstücks

Legal Events

Date Code Title Description
PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

AK Designated contracting states

Kind code of ref document: A1

Designated state(s): AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IS IT LI LT LU LV MC MT NL PL PT RO SE SI SK TR

AX Request for extension of the european patent

Extension state: AL BA HR MK RS

AKX Designation fees paid
REG Reference to a national code

Ref country code: DE

Ref legal event code: 8566

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: THE APPLICATION IS DEEMED TO BE WITHDRAWN

18D Application deemed to be withdrawn

Effective date: 20090115