EP3395482A3 - Method for the preparation of particles by means of spark erosion and erosion device for same - Google Patents

Method for the preparation of particles by means of spark erosion and erosion device for same Download PDF

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Publication number
EP3395482A3
EP3395482A3 EP18000382.4A EP18000382A EP3395482A3 EP 3395482 A3 EP3395482 A3 EP 3395482A3 EP 18000382 A EP18000382 A EP 18000382A EP 3395482 A3 EP3395482 A3 EP 3395482A3
Authority
EP
European Patent Office
Prior art keywords
electrode
erosion
electrodes
particles
spark
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
EP18000382.4A
Other languages
German (de)
French (fr)
Other versions
EP3395482A2 (en
EP3395482B1 (en
Inventor
Kai Osswald
Jörg Woidasky
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.)
Hochschule Pforzheim
Original Assignee
Hochschule Pforzheim
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 Hochschule Pforzheim filed Critical Hochschule Pforzheim
Publication of EP3395482A2 publication Critical patent/EP3395482A2/en
Publication of EP3395482A3 publication Critical patent/EP3395482A3/en
Application granted granted Critical
Publication of EP3395482B1 publication Critical patent/EP3395482B1/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

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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
    • B22F9/00—Making metallic powder or suspensions thereof
    • B22F9/02—Making metallic powder or suspensions thereof using physical processes
    • B22F9/14—Making metallic powder or suspensions thereof using physical processes using electric discharge
    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22C—ALLOYS
    • C22C1/00—Making non-ferrous alloys
    • C22C1/04—Making non-ferrous alloys by powder metallurgy

Abstract

Es wird ein Verfahren und eine Erodiervorrichtung zur Herstellung von Partikeln mittels Funkenerosion vorgeschlagen, indem eine erste Elektrode aus einem ersten Metall und eine zweite Elektrode aus einem zweiten Metall bereitgestellt wird, die Elektroden in einem fluiden Dielektrikum werden, an die Elektroden eine gepulste elektrische Spannung angelegt wird und die Elektroden aufeinander zu bewegt werden, um elektrische Funkenentladungen zwischen denselben zu erzeugen, wonach die anlässlich der Funkenentladungen erzeugten Partikeln aus den Elektrodenmaterialien gewonnen werden. Die Erfindung sieht vor, dass wenigstens eine dritte Elektrode aus einem drittes Metall bereitgestellt und in dem Dielektrikum angeordnet wird, wobei ferner zwischen die erste und die dritte Elektrode eine gepulste elektrische Spannung angelegt wird und die erste Elektrode und die dritte Elektrode aufeinander zu bewegt werden, um elektrische Funkenentladungen zwischen denselben zu erzeugen, wonach die anlässlich der Funkenentladungen erzeugten Partikel aus den Materialien der ersten und dritten Elektrode gewonnen werden und der Anteil der aus dem Material der ersten, zweiten und dritten Elektrode erzeugten Partikel durch Verlagern der ersten Elektrode in Bezug auf die zweite und dritte Elektrode gesteuert wird.A method and erosion apparatus for producing particles by spark erosion is proposed by providing a first electrode of a first metal and a second electrode of a second metal which become electrodes in a fluid dielectric to which a pulsed electrical voltage is applied and the electrodes are moved toward each other to generate electrical spark discharges therebetween, whereafter the particles generated from the spark discharges are recovered from the electrode materials. The invention provides that at least one third electrode is provided from a third metal and arranged in the dielectric, wherein a pulsed electrical voltage is also applied between the first and the third electrode and the first electrode and the third electrode are moved toward one another, to generate electric spark discharges therebetween, whereafter the particles generated on the occasion of the spark discharges are obtained from the materials of the first and third electrodes, and the proportion of the particles generated from the materials of the first, second and third electrodes by displacing the first electrode with respect to second and third electrode is controlled.

EP18000382.4A 2017-04-26 2018-04-19 Method for the preparation of particles by means of spark erosion and erosion device for same Active EP3395482B1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE102017004003.6A DE102017004003A1 (en) 2017-04-26 2017-04-26 Process for the production of particles by means of spark erosion and suitable erosion device

Publications (3)

Publication Number Publication Date
EP3395482A2 EP3395482A2 (en) 2018-10-31
EP3395482A3 true EP3395482A3 (en) 2019-01-02
EP3395482B1 EP3395482B1 (en) 2021-03-10

Family

ID=62044457

Family Applications (1)

Application Number Title Priority Date Filing Date
EP18000382.4A Active EP3395482B1 (en) 2017-04-26 2018-04-19 Method for the preparation of particles by means of spark erosion and erosion device for same

Country Status (2)

Country Link
EP (1) EP3395482B1 (en)
DE (1) DE102017004003A1 (en)

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2080176A (en) * 1980-06-12 1982-02-03 Inoue Japax Res Electrical discharge machining methods and apparatus
WO2013056185A1 (en) * 2011-10-12 2013-04-18 The Regents Of The University Of California Nanomaterials fabricated using spark erosion and other particle fabrication processes

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2111772B (en) * 1981-12-10 1985-09-18 Tioxide Group Plc Electric arc discharge apparatus
WO2005023406A2 (en) 2003-09-10 2005-03-17 Ramot At Tel-Aviv University Ltd. Production of nanoparticles and microparticles
WO2013008112A2 (en) * 2011-07-08 2013-01-17 Pst Sensors (Proprietary) Limited Method of producing nanoparticles

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2080176A (en) * 1980-06-12 1982-02-03 Inoue Japax Res Electrical discharge machining methods and apparatus
WO2013056185A1 (en) * 2011-10-12 2013-04-18 The Regents Of The University Of California Nanomaterials fabricated using spark erosion and other particle fabrication processes

Non-Patent Citations (2)

* Cited by examiner, † Cited by third party
Title
BURAKOV V S ET AL: "Combined Gas-Liquid Plasma Source for Nanoparticle Synthesis", JOURNAL OF APPLIED SPECTROSCOPY, NEW YORK,NY, US, vol. 83, no. 4, 5 September 2016 (2016-09-05), pages 643 - 649, XP036052538, ISSN: 0021-9037, [retrieved on 20160905], DOI: 10.1007/S10812-016-0341-Y *
PEREKOS A E ET AL: "Structure and magnetic properties of highly dispersed Ni-Mn-Ga powders prepared by spark-erosion", JOURNAL OF APPLIED PHYSICS, AMERICAN INSTITUTE OF PHYSICS, US, vol. 112, no. 9, 1 November 2012 (2012-11-01), pages 93909 - 93909, XP012167840, ISSN: 0021-8979, [retrieved on 20121105], DOI: 10.1063/1.4764017 *

Also Published As

Publication number Publication date
EP3395482A2 (en) 2018-10-31
DE102017004003A1 (en) 2018-10-31
EP3395482B1 (en) 2021-03-10

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