EP0451552A1 - Procédé et appareil pour produire un jet de métal liquide - Google Patents

Procédé et appareil pour produire un jet de métal liquide Download PDF

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Publication number
EP0451552A1
EP0451552A1 EP91104212A EP91104212A EP0451552A1 EP 0451552 A1 EP0451552 A1 EP 0451552A1 EP 91104212 A EP91104212 A EP 91104212A EP 91104212 A EP91104212 A EP 91104212A EP 0451552 A1 EP0451552 A1 EP 0451552A1
Authority
EP
European Patent Office
Prior art keywords
funnel
melt
coil
segments
melting
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
EP91104212A
Other languages
German (de)
English (en)
Other versions
EP0451552B1 (fr
Inventor
Otto W. Dr. Stenzel
Georg Dr. Sick
Michael Hohmann
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.)
ALD Vacuum Technologies GmbH
Original Assignee
Leybold AG
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 Leybold AG filed Critical Leybold AG
Publication of EP0451552A1 publication Critical patent/EP0451552A1/fr
Application granted granted Critical
Publication of EP0451552B1 publication Critical patent/EP0451552B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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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
    • B22F9/06—Making metallic powder or suspensions thereof using physical processes starting from liquid material
    • B22F9/08—Making metallic powder or suspensions thereof using physical processes starting from liquid material by casting, e.g. through sieves or in water, by atomising or spraying
    • B22F9/082—Making metallic powder or suspensions thereof using physical processes starting from liquid material by casting, e.g. through sieves or in water, by atomising or spraying atomising using a fluid

Definitions

  • the invention relates to a method and a device for shaping a pouring jet according to the preamble of patent claim 1.
  • a method for producing high-purity ceramic-free metal powders is already known, in which a melt flowing freely from a melting container is atomized by means of a gas stream and subsequently solidifies (DE-A-3 211 861).
  • the melt is maintained by means of an arc electrode and can flow off via an overflow, the atomization taking place below the overflow.
  • a drip-melting process in which rod-shaped starting material is melted and fed to an atomizing nozzle (DE-A-3 433 458).
  • the rod-shaped material is shifted vertically against an induction coil, the axial extent and opening of which are smaller than the rod diameter, and the lower end of the rod is held with its end face at a substantially constant axial distance above the induction coil.
  • a disadvantage of this process is that the starting material must be in the form of a rod.
  • the object of the invention is to generate a liquid metal jet that is as thin as possible while avoiding the risk of freezing and to allow the outlet to freeze and to melt again.
  • the advantage achieved by the invention is in particular that the melt in the casting funnel is heated inductively and at the same time the cooling wall contact of the melt with the container is reduced. This makes it possible to keep the heat transfer coefficient between the melt and the crucible small, with the result that with a small outlet diameter of z. B. 5 mm to 20 mm the freezing of the cross section is prevented in continuous operation.
  • a melting trough 1 shows a melting trough 1, in which a metal melt 4 is generated by means of a plasma jet 2, which comes from a plasma cannon 3 which is only indicated.
  • a funnel-shaped, slotted, cold induction crucible 6 which has the shape of a paraboloid and is surrounded by an induction coil 7, which adapts to the outer contour of the cooled funnel 6.
  • This induction coil 7 is connected to an AC power source 8.
  • the induction field of this coil couples to the melt 4 in the funnel 6 and heats the melt.
  • an opening 9 is provided, from which liquid metal 10 flows.
  • the cold funnel 6 consists of several segments 11 to 17, which are separated from one another by slots 18 to 21.
  • These segments 11 to 17 are cooled with water via channels 22, 25, which are supplied via ring distributors 23, 24, 26, 27. Such water-cooled segments are already known per se (see, for example, EP-A-0 276 544).
  • Below the cold funnel 6 there is an atomizing chamber 28, into which an atomizing nozzle 29 opens from the side.
  • This nozzle 29 is aligned precisely with the falling path of the liquid metal 10, so that a gas jet 30 emerging from the nozzle 29 at high speed always detects the liquid 10 from the same direction and divides it into a stream of very fine metal particles 31. Based on the impulse they received from the gas jet 30, these metal particles 31 describe a parabolic trajectory which finally ends in a drop shaft 32 which is attached to the atomization chamber 28 in a side and downward direction.
  • a gas line 35 with a metering valve 36 also opens into the atomizing chamber 28, through which the entire device can be filled with a protective gas.
  • the chamber 28 can be evacuated. A suction port required for this is not shown for the sake of simplicity.
  • the average power density of the power induced in the melt is chosen so large that the heat losses in the funnel 6 are approximately compensated.
  • the electromagnetic forces which exert a pressure on the liquid metal in the funnel 6 and which are generated by the coil 7 with the turns 37 to 42.
  • This pressure is determined by the power density, which is based on the formula calculated, where f denotes the frequency of the alternating field, ⁇ the penetration depth, S o the power density flowing over the surface, e the Euler number and x the distance from the surface of the melt in the funnel 6 in the direction of the funnel axis.
  • the compensation of the liquid pressure is of importance insofar as the heat transfer coefficient in the cold induction crucible is dependent on the resulting liquid pressure which presses the melt against the cold crucible segments 11 to 17.
  • the liquid pressure can be completely or partially compensated for by the electromagnetic radiation pressure.
  • the radiation pressure at the slots 18 to 21 is higher than in the middle of the web.
  • a high contact pressure of the melt means that a large heat flow occurs. Greater induction power is required to compensate for the increased heat losses. Because of the in principle poor electrical efficiency, which is geometrically determined, an unnecessarily large power supply is then required.
  • the radiation pressure which acts on the melt in the funnel 6 must not become so great that the melt is prevented from escaping. Spatial field strength changes must not stimulate turbulent flow. This condition is guaranteed by a conical or rotationally hyperbolic shape of the inner funnel contour.
  • the cone shape has advantages in terms of production, but disadvantages in terms of process technology in beam shaping. Curved segments 11 to 15 are difficult to manufacture, but they allow a better distribution of force and power in the melt, and their shape comes very close to the ideal fluidic shape of a potential funnel.
  • the suitable frequency of the voltage source 8 to meet the requirement to compensate for the liquid pressure and compensate for the heat losses can be selected in accordance with the melting material.
  • vertical gas atomization or rotary atomization can also be provided.
  • a standing wave generation is also conceivable.
  • metal powder investment casting can also be produced, so that the entire atomization device is dispensed with.
  • Metallic, water-cooled containers or cold containers with a separate induction coil can be provided as storage containers 1, from which the liquid metal flows into the funnel 6.
  • An arc heater or an electron beam heater can replace a plasma beam generator 3.
  • FIG. 2 shows a further embodiment of the invention, in which an overflow trough 50 is provided, the melt 51 of which flows into the melting trough 1 via a spout 52.
  • the melt 51 of this overflow trough 50 is fed by a plasma jet 53 from a plasma source 54, which melts a rod 55 which is pushed into the plasma jet 53.
  • annular nozzle 56 is provided which vertically atomizes the jet 10 coming from the funnel 6.
  • a relatively large chute 62 ends in a tapering powder tower 63, in which the atomized powder collects.

Landscapes

  • Manufacture Of Metal Powder And Suspensions Thereof (AREA)
EP91104212A 1990-04-09 1991-03-19 Procédé et appareil pour produire un jet de métal liquide Expired - Lifetime EP0451552B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE4011392A DE4011392B4 (de) 1990-04-09 1990-04-09 Verfahren und Vorrichtung zur Formung eines Gießstrahls
DE4011392 1990-04-09

Publications (2)

Publication Number Publication Date
EP0451552A1 true EP0451552A1 (fr) 1991-10-16
EP0451552B1 EP0451552B1 (fr) 1997-04-23

Family

ID=6404033

Family Applications (1)

Application Number Title Priority Date Filing Date
EP91104212A Expired - Lifetime EP0451552B1 (fr) 1990-04-09 1991-03-19 Procédé et appareil pour produire un jet de métal liquide

Country Status (3)

Country Link
EP (1) EP0451552B1 (fr)
JP (1) JP3063861B2 (fr)
DE (2) DE4011392B4 (fr)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0560494A1 (fr) * 1992-02-11 1993-09-15 General Electric Company Procédé et installation pour le contrôle de l'écoulement de métal en fusion
FR2706992A1 (fr) * 1993-06-23 1994-12-30 Leybold Durferrit Gmbh
EP1008407A2 (fr) * 1998-12-09 2000-06-14 Böhler Edelstahl GmbH & Co KG Procédé et installation de préparation de poudre métallique dans un conteneur par pulvérisation de métal fondu
WO2023078911A1 (fr) * 2021-11-03 2023-05-11 Sms Group Gmbh Unité d'atomisation pour atomiser des matières métalliques en fusion, en particulier pour la métallurgie des poudres

Families Citing this family (26)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5160532A (en) * 1991-10-21 1992-11-03 General Electric Company Direct processing of electroslag refined metal
DE4140723A1 (de) * 1991-12-10 1993-06-17 Leybold Durferrit Gmbh Fuer einen schmelztiegel mit keramikfreiem auslass zum ableiten eines schmelzstrahles bestimmte spule
DE4207694A1 (de) * 1992-03-11 1993-09-16 Leybold Durferrit Gmbh Vorrichtung fuer die herstellung von metallen und metall-legierungen hoher reinheit
DE4209964C2 (de) * 1992-03-27 2000-11-02 Ald Vacuum Techn Ag Vorrichtung für die Herstellung von Metallen und Metall-Legierungen hoher Reinheit
DE4222399C2 (de) * 1992-07-08 2001-06-07 Ald Vacuum Techn Ag Gießstrahl-Führungstrichter
DE4241359A1 (de) * 1992-09-14 1994-03-17 Leybold Durferrit Gmbh Verfahren und Vorrichtung zum Bodenabstich einer keramikfreien Schmelze, insbesondere für die Metallpulvererzeugung
JP2954896B2 (ja) * 1997-01-09 1999-09-27 核燃料サイクル開発機構 コールドクルーシブル誘導溶融炉からの溶融物抜き出し装置
JP4147604B2 (ja) 1997-04-23 2008-09-10 神鋼電機株式会社 誘導加熱溶解炉およびその底部出湯機構
DE19738682B4 (de) * 1997-09-04 2006-10-19 Ald Vacuum Technologies Ag Schmelzbehälter
US8891583B2 (en) 2000-11-15 2014-11-18 Ati Properties, Inc. Refining and casting apparatus and method
US6496529B1 (en) 2000-11-15 2002-12-17 Ati Properties, Inc. Refining and casting apparatus and method
DE10305053A1 (de) * 2003-02-07 2004-08-26 Ald Vacuum Technologies Ag Vorrichtung für die Herstellung von Metallen und Metall-Legierungen hoher Reinheit
JP2006307265A (ja) * 2005-04-27 2006-11-09 Hitachi Metals Ltd 微細金属球の製造装置
US7803211B2 (en) 2005-09-22 2010-09-28 Ati Properties, Inc. Method and apparatus for producing large diameter superalloy ingots
US7803212B2 (en) 2005-09-22 2010-09-28 Ati Properties, Inc. Apparatus and method for clean, rapidly solidified alloys
US7578960B2 (en) 2005-09-22 2009-08-25 Ati Properties, Inc. Apparatus and method for clean, rapidly solidified alloys
US8748773B2 (en) 2007-03-30 2014-06-10 Ati Properties, Inc. Ion plasma electron emitters for a melting furnace
US8642916B2 (en) 2007-03-30 2014-02-04 Ati Properties, Inc. Melting furnace including wire-discharge ion plasma electron emitter
US7798199B2 (en) 2007-12-04 2010-09-21 Ati Properties, Inc. Casting apparatus and method
DE102008037259A1 (de) * 2008-08-08 2010-02-25 Doncasters Precision Castings-Bochum Gmbh Elektromagnetischer Stopfen
US8747956B2 (en) 2011-08-11 2014-06-10 Ati Properties, Inc. Processes, systems, and apparatus for forming products from atomized metals and alloys
JP5803197B2 (ja) * 2011-03-25 2015-11-04 セイコーエプソン株式会社 金属粉末製造装置および金属粉末製造方法
JP5803196B2 (ja) * 2011-03-25 2015-11-04 セイコーエプソン株式会社 金属粉末製造装置および金属粉末製造方法
JP5803198B2 (ja) * 2011-03-25 2015-11-04 セイコーエプソン株式会社 金属粉末製造装置および金属粉末製造方法
US20160332232A1 (en) * 2015-05-14 2016-11-17 Ati Properties, Inc. Methods and apparatuses for producing metallic powder material
DE102021208605A1 (de) 2021-08-06 2023-02-09 Sms Group Gmbh Wechselsystem für eine Tundish-Einheit, Tundish-Einheit für ein Wechselsystem, Verdüsungsanlage sowie Verfahren zum Verdüsen von Metallschmelze

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3387783A (en) * 1964-11-18 1968-06-11 Basf Ag Apparatus for atomizing molten solids
CH576302A5 (fr) * 1973-07-16 1976-06-15 Bicc Ltd
EP0238425A1 (fr) * 1986-03-13 1987-09-23 Technogenia S.A. Procédé et dispositif pour l'élaboration de matériaux réfractaires par induction
US4762553A (en) * 1987-04-24 1988-08-09 The United States Of America As Represented By The Secretary Of The Air Force Method for making rapidly solidified powder
EP0291288A1 (fr) * 1987-05-11 1988-11-17 Electricity Association Services Limited Valve électromagnétique
EP0427379A2 (fr) * 1989-11-09 1991-05-15 Crucible Materials Corporation Procédé de préparation de poudre de titane

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4523621A (en) * 1982-02-18 1985-06-18 Allied Corporation Method for making metallic glass powder
DE3211861A1 (de) * 1982-03-31 1983-10-06 Leybold Heraeus Gmbh & Co Kg Verfahren und vorrichtung zur herstellung von hochreinen keramikfreien metallpulvern
GB2142046B (en) * 1983-06-23 1987-01-07 Gen Electric Method and apparatus for making alloy powder
DE3433458A1 (de) * 1984-09-12 1986-03-20 Leybold-Heraeus GmbH, 5000 Köln Verfahren und vorrichtung zum abschmelzen von stangenfoermigem material mittels einer induktionsspule
DE3533964C1 (de) * 1985-09-24 1987-01-15 Alfred Prof Dipl-Ing Dr-I Walz Verfahren und Vorrichtung zum Herstellen von Feinstpulver in Kugelform
US4738713A (en) * 1986-12-04 1988-04-19 The Duriron Company, Inc. Method for induction melting reactive metals and alloys
DE3809072A1 (de) * 1988-03-18 1989-09-28 Didier Werke Ag Dreh- und/oder schieberverschluss und dessen verschlussteile
US5056692A (en) * 1988-10-13 1991-10-15 The Electricity Counsil And Chamberlin & Hill Plc Dispensing apparatus for molten metal

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3387783A (en) * 1964-11-18 1968-06-11 Basf Ag Apparatus for atomizing molten solids
CH576302A5 (fr) * 1973-07-16 1976-06-15 Bicc Ltd
EP0238425A1 (fr) * 1986-03-13 1987-09-23 Technogenia S.A. Procédé et dispositif pour l'élaboration de matériaux réfractaires par induction
US4762553A (en) * 1987-04-24 1988-08-09 The United States Of America As Represented By The Secretary Of The Air Force Method for making rapidly solidified powder
EP0291288A1 (fr) * 1987-05-11 1988-11-17 Electricity Association Services Limited Valve électromagnétique
EP0427379A2 (fr) * 1989-11-09 1991-05-15 Crucible Materials Corporation Procédé de préparation de poudre de titane

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0560494A1 (fr) * 1992-02-11 1993-09-15 General Electric Company Procédé et installation pour le contrôle de l'écoulement de métal en fusion
FR2706992A1 (fr) * 1993-06-23 1994-12-30 Leybold Durferrit Gmbh
EP1008407A2 (fr) * 1998-12-09 2000-06-14 Böhler Edelstahl GmbH & Co KG Procédé et installation de préparation de poudre métallique dans un conteneur par pulvérisation de métal fondu
EP1008407A3 (fr) * 1998-12-09 2004-06-09 Böhler Edelstahl GmbH & Co KG Procédé et installation de préparation de poudre métallique dans un conteneur par pulvérisation de métal fondu
WO2023078911A1 (fr) * 2021-11-03 2023-05-11 Sms Group Gmbh Unité d'atomisation pour atomiser des matières métalliques en fusion, en particulier pour la métallurgie des poudres

Also Published As

Publication number Publication date
EP0451552B1 (fr) 1997-04-23
DE4011392B4 (de) 2004-04-15
DE59108671D1 (de) 1997-05-28
JPH06128611A (ja) 1994-05-10
DE4011392A1 (de) 1991-10-10
JP3063861B2 (ja) 2000-07-12

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