EP0340152A1 - Apparatus for atomising a liquid-metal jet - Google Patents

Apparatus for atomising a liquid-metal jet Download PDF

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Publication number
EP0340152A1
EP0340152A1 EP89730045A EP89730045A EP0340152A1 EP 0340152 A1 EP0340152 A1 EP 0340152A1 EP 89730045 A EP89730045 A EP 89730045A EP 89730045 A EP89730045 A EP 89730045A EP 0340152 A1 EP0340152 A1 EP 0340152A1
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EP
European Patent Office
Prior art keywords
nozzles
inclination
groups
same
angle
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Withdrawn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
EP89730045A
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German (de)
French (fr)
Inventor
Manfred Aey
Klaus Dr. Wünnenberg
Reinhard Dr. Flender
Klaus Schwarz
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.)
Vodafone GmbH
Original Assignee
Mannesmann AG
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Filing date
Publication date
Application filed by Mannesmann AG filed Critical Mannesmann AG
Publication of EP0340152A1 publication Critical patent/EP0340152A1/en
Withdrawn legal-status Critical Current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
    • C—CHEMISTRY; METALLURGY
    • C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
    • C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
    • C23C4/00—Coating by spraying the coating material in the molten state, e.g. by flame, plasma or electric discharge
    • C23C4/12—Coating by spraying the coating material in the molten state, e.g. by flame, plasma or electric discharge characterised by the method of spraying
    • C23C4/123—Spraying molten metal
    • 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
    • B22F2009/088—Fluid nozzles, e.g. angle, distance

Definitions

  • the invention relates to a device for the atomization of a pouring stream of liquid metal by means of a fluid emerging under pressure from several nozzles, the nozzles being arranged in the lower half of a line surrounding the pouring stream and the fluid streams emerging from the nozzles cutting the pouring stream and the atomized metal forms a body on a moving surface.
  • the principle of such devices or methods is known e.g. made of steel and Eisen, 107 (1987), pp. 333 to 336 or DE-PS 22 52 139. According to these known methods, liquid metal flows from a pan with a controllable discharge cross-section into a distributor, the fill level of which is kept constant in order to maintain a constant throughput.
  • the distributor has an outflow opening with a preselected cross section, which projects into an atomizing device.
  • the atomizing device usually consists of a standing line in which numerous bores or nozzles are mounted at an equal angle of inclination so that the metal jet flowing centrally through the ring line is hit by inert atomizing gas below the ring line.
  • a symmetrical spray cone is formed, which consists of the gas flow and small metal particles.
  • the particles accelerated by the gas flow hit a base with a high momentum in a partially solidified state and form a shaped body there.
  • the support is moved away under the spray jet.
  • the width of the molded body produced can be varied by swinging the gas nozzle device about an axis lying parallel to the feed direction of the support or by the width of the spray jet with the gas nozzle stationary (see, for example, EPO 225 080 Al).
  • the object of the invention is to influence the quantity distribution of the particles in the spray jet over the cross section in such a way that the profile of the spray jet leads to a more uniform thickness of the body produced over its width and losses of the spray material in the edge area are reduced.
  • metal melt 2 is contained in a storage vessel 1, which is supplied to an atomizing device 5 through a spout 3 and a subsequent guide nozzle 4.
  • the atomizing device 5 is connected to supply pipes 6, with which a fluid, in particular gas, is supplied.
  • the pouring jet 7 emerging from the guide nozzle 4 is atomized by the fluid emerging from nozzles of an annular line 8.
  • a spray jet 9 is formed in the process.
  • the spray material 10 thus produced is collected on a carrier 11 and further processed, e.g. a rolling process.
  • the fluid-carrying line 8 is shown as a ring line.
  • the line 8 surrounds the pouring jet 7, shown as the longitudinal axis V of the annular line 8, concentrically.
  • the line 8 is provided with nozzles or bores 12 which are at equal distances from one another.
  • the nozzles 12 are inclined to the axis V such that the nozzle axes 13, 13 'seen the axis V in the direction of flow of the pouring jet 7, cut below the line 8.
  • nozzles with the same axis inclination are combined in such a way that two opposing groups have the same inclination angles ⁇ 1 and ⁇ 2, and adjacent groups have different inclination angles ( ⁇ 1, ⁇ 2) exhibit.
  • the groups 14, 15 have the same angle of inclination ⁇ 2
  • the groups 16, 17 have the different angle of inclination ⁇ 1.
  • 3 shows the groups 14, 16, each with a different angle of inclination ⁇ 1, ⁇ 2.
  • the same pressure of the fluid is applied to all nozzle groups. This initially shows that the nozzles 7 of groups 14, 15 are used for the usual atomization of the pouring jet at intersection 18, with an essentially conical configuration of the spray jet, that is to say with a practically circular base area.
  • the spray cone formed in this way is detected by the fluid jets of the nozzles 12 of the groups 16, 17 with a lower-lying intersection 19 of the nozzle axes 13 with the pouring jet axis V and converted into a spray cone with an approximately oval or elliptical base area.
  • the groups are arranged in such a way that the nozzles producing the first intersection 18 are cut from the withdrawal direction 20 of the carrier 11 or spray material 10 in plan view, the nozzle groups 16, 17 with the lower intersection point 19 accordingly lying next to the withdrawal direction 20.
  • FIGS. 4 and 5 show further variants of the atomizing device according to the invention.
  • the nozzles 12 are combined here into concentric groups 21, 22.
  • the inner concentric group 21 has nozzles 7 with the same angle of inclination ⁇ i, while the outer Concentric group 22 according to a first variant likewise has inclination angles ⁇ 1 that are identical to one another but different from the inclination angle ⁇ i, or according to a second variant have nozzles with different sectors, as shown in FIGS. 2 and 3.
  • the spray cone is formed by applying different pressures to the individual sectors of the outer group. This results in a higher density of the sprayed material.

Abstract

The invention relates to an apparatus for atomising a liquid-metal casting stream by means of a gas emerging under pressure from a plurality of nozzles, the nozzles being arranged in the lower half of a pipe surrounding the casting stream and the nozzle axes intersecting the axis of the casting stream at spaced points of intersection lying one below the other, and the atomised metal forming a body on a moving base. In order to influence the quantitative distribution of the particles of the atomised metal in the spray stream over the cross-section in such a way that the profile of the spray stream leads to a more uniform thickness of the body produced, over its width, and that losses of the sprayed metal in the edge region are reduced, it is proposed according to the invention that the nozzles (12) be gathered into groups (14, 16) in such a way that, where they are at different distances from the axis of the casting stream, the groups have an identical angle of inclination or, where the distance is the same, the angle of inclination within a group is the same but adjacent groups have different angles of inclination, groups with nozzles at the same distance and the same angle of inclination being arranged opposite one another. <IMAGE>

Description

Die Erfindung betrifft eine Einrichtung für die Zerstäubung eines Gießstrahles flüssigen Metalls mittels eines unter Druck aus mehreren Düsen austretenden Fluids, wobei die Düsen in der unteren Hälfte einer den Gießstrahl umgebenden Leitung angeordnet sind und die aus den Düsen austretenden Fluidstrahlen den Gießstrahl schneiden und das zerstäubte Metall auf einer bewegten Unterlage einen Körper bildet. Das Prinzip derartiger Vorrichtungen bzw. Verfahren ist bekannt z.B. aus Stahl u. Eisen, 107 (1987), S. 333 bis 336 bzw. der DE-PS 22 52 139. Gemäß diesen bekannten Verfahren fließt flüssiges Metall aus einer Pfanne mit regelbarem Ausflußquerschnitt in einen Verteiler, dessen Füllhöhe zur Aufrechterhaltung eines gleichbleibenden Durchsatzes konstant gehalten wird. Der Verteiler besitzt eine Ausflußöffnung mit vorgewähltem Querschnitt, die in eine Zerstäubungseinrichtung hineinragt.The invention relates to a device for the atomization of a pouring stream of liquid metal by means of a fluid emerging under pressure from several nozzles, the nozzles being arranged in the lower half of a line surrounding the pouring stream and the fluid streams emerging from the nozzles cutting the pouring stream and the atomized metal forms a body on a moving surface. The principle of such devices or methods is known e.g. made of steel and Eisen, 107 (1987), pp. 333 to 336 or DE-PS 22 52 139. According to these known methods, liquid metal flows from a pan with a controllable discharge cross-section into a distributor, the fill level of which is kept constant in order to maintain a constant throughput. The distributor has an outflow opening with a preselected cross section, which projects into an atomizing device.

Die Zerstäubungseinrichtung besteht üblicherweise aus einer stehenden Leitung, in der zahlreiche Bohrungen oder Düsen unter einem gleichen Neigungswinkel so angebracht sind, daß der zentrisch durch die Ringleitung fließende Metallstrahl unterhalb der Ringleitung von inertem Zerstäubungsgas getroffen wird. Dabei bildet sich bei stehender Zerstäubungseinrichtung ein symmetrischer Sprühkegel, der aus dem Gasstrom und kleinen Metallpartikeln besteht. Die durch den Gasstrom beschleunigten Partikel treffen mit hohem Impuls in teilweise erstarrtem Zustand auf eine Unterlage und bilden dort einen Formkörper. Zur Erzeugung von bandförmigem Vormaterial wird die Auflage unter dem Sprühstrahl hinwegbewegt. Die Breite des erzeugten Formkörpers kann durch Schwingen der Gasdüseneinrichtung um eine parallel zur Vorschubrichtung der Auflage liegende Achse oder durch die Breite des Sprühstrahls bei feststehender Gasdüse variiert werden (siehe z.B. EPO 225 080 Al).The atomizing device usually consists of a standing line in which numerous bores or nozzles are mounted at an equal angle of inclination so that the metal jet flowing centrally through the ring line is hit by inert atomizing gas below the ring line. When the atomizing device is stationary, a symmetrical spray cone is formed, which consists of the gas flow and small metal particles. The particles accelerated by the gas flow hit a base with a high momentum in a partially solidified state and form a shaped body there. In order to produce band-shaped primary material, the support is moved away under the spray jet. The width of the molded body produced can be varied by swinging the gas nozzle device about an axis lying parallel to the feed direction of the support or by the width of the spray jet with the gas nozzle stationary (see, for example, EPO 225 080 Al).

Bei diesen bekannten Verfahren und Einrichtungen ist nachteilig, daß über die Breite des zu erzeugenden Bandes gesehen eine Materialanhäufung im Mittenbereich des Bandes erfolgt. Will man diesen Formkörper dem Endprofil stärker anpassen, müssen hohe Sprühgutverluste in Kauf genommen werden, ohne ein befriedigendes Ergebnis zu erzielen.A disadvantage of these known methods and devices is that, seen across the width of the strip to be produced, there is an accumulation of material in the central region of the strip. If you want to adapt this molding more closely to the end profile, high spray material losses have to be accepted without achieving a satisfactory result.

Aus der US-PS 40 66 117 ist es ferner bekannt, den Düsen eines Zerstäuberringes eine derartige Neigung zu erteilen, daß die Gasstrahlen der Düsen in zwei untereinander liegenden Schnittpunkten mit der Gießstrahlachse liegen. Dabei besitzen unmittelbar nebeneinander angeordnete Düsen abwechselnd eine unterschiedliche Neigung zur Gießstrahlachse. Dadurch soll eine Bündelung des Sprühgutes im Sinne einer Verkleinerung der kreisförmigen Auftrefffläche erzielt werden.From US-PS 40 66 117 it is also known to give the nozzles of an atomizer ring such an inclination that the gas jets of the nozzles lie in two mutually intersection points with the pouring jet axis. In this case, nozzles arranged directly next to one another alternately have a different inclination to the pouring jet axis. This is intended to bundle the spray material in the sense of reducing the circular impact area.

Aufgabe der Erfindung ist es, die Mengenverteilung der Partikel im Sprühstrahl über den Querschnitt derart zu beeinflussen, daß das Profil des Sprühstrahles zu einer gleichmäßigeren Dicke des erzeugten Körpers über seine Breite führt und Verluste des Sprühgutes im Randbereich verringert werden.The object of the invention is to influence the quantity distribution of the particles in the spray jet over the cross section in such a way that the profile of the spray jet leads to a more uniform thickness of the body produced over its width and losses of the spray material in the edge area are reduced.

Bei einer Einrichtung gemäß Gattungsbegriff des Hauptanspruches 1 wird diese Aufgabe gelöst mit den Merkmalen des kennzeichnenden Teils des Hauptanspruches.In a device according to the preamble of main claim 1, this object is achieved with the features of the characterizing part of the main claim.

Die Unteransprüche beinhalten vorteilhafte Ausgestaltungen dieser Erfindung.The subclaims contain advantageous embodiments of this invention.

Anhand der beiliegenden Zeichnungen, die Ausführungsbeispiele darstellen, soll die Erfindung näher erläutert werden.The invention will be explained in more detail with reference to the accompanying drawings, which show exemplary embodiments.

Es zeigen

  • Fig. 1 den Aufbau einer Gesamtanlage im Schnitt,
  • Fig. 2 eine Draufsicht der Zerstäubungseinrichtung,
  • Fig. 3 einen Schnitt nach der Linie A-A der Fig. 2,
  • Fig. 4 eine Abwandlung der Zerstäubungseinrichtung in Draufsicht,
  • Fig. 5 einen Schnitt nach der Linie B-B der Fig 4,
Show it
  • 1 shows the structure of an overall system in section,
  • 2 is a plan view of the atomizing device,
  • 3 shows a section along the line AA of FIG. 2,
  • 4 shows a modification of the atomizing device in plan view,
  • 5 shows a section along the line BB of FIG. 4,

Gemäß Fig. 1 ist in einem Vorratsgefäß 1 Metallschmelze 2 enthalten, die durch einen Ausguß 3 und eine anschließende Führungsdüse 4 einer Zerstäubungseinrichtung 5 zugeführt wird. Die Zerstäubungseinrichtung 5 ist mit Zuleitungsrohren 6 verbunden, mit denen ein Fluid, insbesondere Gas, zugeführt wird. Der aus der Führungsdüse 4 austretende Gießstrahl 7 wird durch das aus Düsen einer ringförmigen Leitung 8 austretende Fluid zerstäubt. Dabei bildet sich ein Sprühstrahl 9. Das so erzeugte Sprühgut 10 wird auf einem Träger 11 aufgefangen und der Weiterverarbeitung, z.B. einem Walzprozeß, zugeführt.According to FIG. 1, metal melt 2 is contained in a storage vessel 1, which is supplied to an atomizing device 5 through a spout 3 and a subsequent guide nozzle 4. The atomizing device 5 is connected to supply pipes 6, with which a fluid, in particular gas, is supplied. The pouring jet 7 emerging from the guide nozzle 4 is atomized by the fluid emerging from nozzles of an annular line 8. A spray jet 9 is formed in the process. The spray material 10 thus produced is collected on a carrier 11 and further processed, e.g. a rolling process.

In den Fig. 2 und 3 ist die das Fluid führende Leitung 8 als Ringleitung dargestellt. Die Leitung 8 umgibt den Gießstrahl 7, dargestellt als Längsachse V der ringförmigen Leitung 8, konzentrisch. Die Leitung 8 ist mit Düsen bzw. Bohrungen 12 versehen, die voneinander gleiche Abstände aufweisen. Die Düsen 12 sind zur Achse V derart geneigt, daß die Düsenachsen 13, 13′ die Achse V in Fließrichtung des Gießstrahles 7 gesehen, unterhalb der Leitung 8 schneiden. Dabei sind Düsen mit gleicher Achsneigung zusammengefaßt derart, daß jeweils zwei sich gegenüberliegende Gruppen gleiche Neigungswinkel α 1 und α 2, nebeneinanderliegende Gruppen unterschiedliche Neigungswinkel (α 1, α2) aufweisen. In Fig. 2 weisen die Gruppen 14, 15 den gleichen Neigungswinkel α 2 auf, während die Gruppen 16, 17 den abweichenden Neigungswinkel α 1 aufweisen. In Fig. 3 sind die Gruppen 14, 16 mit jeweils unterschiedlichem Neigungswinkel α 1, α 2 dargestellt. Alle Düsengruppen sind mit gleichem Druck des Fluids beaufschlagt. Daraus ergibt sich zunächst, daß durch die Düsen 7 der Gruppen 14, 15 die übliche Zerstäubung des Gießstrahles im Schnittpunkt 18 erfolgt, mit einer im wesentlichen kegelförmigen Ausbildung des Sprühstrahles, also mit praktisch kreisringförmiger Grundfläche. Der so gebildete Sprühkegel wird durch die Fluidstrahlen der Düsen 12 der Gruppen 16, 17 mit tiefer­liegendem Schnittpunkt 19 der Düsenachsen 13 mit der Gießstrahlachse V erfaßt und in einen Sprühkegel mit etwa ovaler bzw. elliptischer Grundfläche umgeformt. Die Gruppen sind so angeordnet, daß die den ersten Schnittpunkt 18 erzeugenden Düsen von der Abzugsrichtung 20 des Trägers 11 bzw. Sprühgutes 10 in der Draufsicht geschnitten werden, die Düsengruppen 16, 17 mit dem tieferliegenden Schnittpunkt 19 demgemäß neben der Abzugsrichtung 20 liegen. Das bedeutet, daß die Achse der elliptischen Grundfläche des Sprühkegels parallel zur Abzugsrichtung 20 des Sprühgutes liegt. Dadurch wird erreicht, vor allem bei pendelnder Bewegung der Düse zur Bestreichung der gesamten Trägerbreite bei Erzeugung eines bandförmigen Körpers, daß das Dickenprofil über die Sprühgutbreite gleichmäßiger ist und gleichzeitig der Overspray-Anteil (Partikel, die neben dem Träger vorbeifliegen oder durch flachen Auftreffwinkel auf den Träger abprallen und dadurch zur Körperbildung nicht mehr beitragen) minimiert wird. Gleichzeitig wird die Porosität des erzeugten Körpers durch den konzentrierten Sprühstrahl verringert.2 and 3, the fluid-carrying line 8 is shown as a ring line. The line 8 surrounds the pouring jet 7, shown as the longitudinal axis V of the annular line 8, concentrically. The line 8 is provided with nozzles or bores 12 which are at equal distances from one another. The nozzles 12 are inclined to the axis V such that the nozzle axes 13, 13 'seen the axis V in the direction of flow of the pouring jet 7, cut below the line 8. Here, nozzles with the same axis inclination are combined in such a way that two opposing groups have the same inclination angles α 1 and α 2, and adjacent groups have different inclination angles (α 1, α2) exhibit. 2, the groups 14, 15 have the same angle of inclination α 2, while the groups 16, 17 have the different angle of inclination α 1. 3 shows the groups 14, 16, each with a different angle of inclination α 1, α 2. The same pressure of the fluid is applied to all nozzle groups. This initially shows that the nozzles 7 of groups 14, 15 are used for the usual atomization of the pouring jet at intersection 18, with an essentially conical configuration of the spray jet, that is to say with a practically circular base area. The spray cone formed in this way is detected by the fluid jets of the nozzles 12 of the groups 16, 17 with a lower-lying intersection 19 of the nozzle axes 13 with the pouring jet axis V and converted into a spray cone with an approximately oval or elliptical base area. The groups are arranged in such a way that the nozzles producing the first intersection 18 are cut from the withdrawal direction 20 of the carrier 11 or spray material 10 in plan view, the nozzle groups 16, 17 with the lower intersection point 19 accordingly lying next to the withdrawal direction 20. This means that the axis of the elliptical base of the spray cone is parallel to the withdrawal direction 20 of the spray material. It is thereby achieved, especially when the nozzle oscillates to cover the entire width of the carrier when producing a band-shaped body, that the thickness profile is more uniform over the width of the spray material and at the same time the overspray content (particles that fly past the carrier or due to a flat angle of impact on the Bounce off the carrier and therefore no longer contribute to body formation) is minimized. At the same time, the porosity of the body produced is reduced by the concentrated spray jet.

Fig. 4 und 5 zeigen weitere Varianten der erfindungsgemäßen Zerstäubungseinrichtung. Die Düsen 12 sind hier zu konzentrischen Gruppen 21, 22 zusammengefaßt. Die innere konzentrische Gruppe 21 weist Düsen 7 mit gleichem Neigungswinkel α i auf, während die äußere konzentrische Gruppe 22 nach einer ersten Variante ebenfalls untereinander gleiche, jedoch vom Neigungswinkel α i unterschiedliche Neigungswinkel α 1, oder gemäß einer zweiten Variante sektorenweise Düsen mit unterschiedlichem Neigungswinkel aufweist, wie in Fig. 2 und 3 dargestellt. Die Umformung des Sprühkegels wird durch unterschiedliche Druckbeaufschlagung der einzelnen Sektoren der äußeren Gruppe erreicht. Dadurch wird eine größere Dichte des Sprühgutes erreicht.4 and 5 show further variants of the atomizing device according to the invention. The nozzles 12 are combined here into concentric groups 21, 22. The inner concentric group 21 has nozzles 7 with the same angle of inclination α i, while the outer Concentric group 22 according to a first variant likewise has inclination angles α 1 that are identical to one another but different from the inclination angle α i, or according to a second variant have nozzles with different sectors, as shown in FIGS. 2 and 3. The spray cone is formed by applying different pressures to the individual sectors of the outer group. This results in a higher density of the sprayed material.

Claims (9)

1. Einrichtung für die Zerstäubung eines Gießstrahles flüssigen Metalls mittels eines unter Druck aus mehreren Düsen austretenden Gases, wobei die Düsen in der unteren Hälfte einer den Gießstrahl umgebenden Leitung angeordnet sind und die Düsen zu Gruppen zusammengefaßt sind, derart, daß die Düsenachsen die Gießstrahlachse in in Abstand untereinander liegenden Schnittpunkten schneiden und das zerstäubte Metall auf einer bewegten Unterlage einen Körper bildet,
dadurch gekennzeichnet,
daß die Gruppen aus unmittelbar nebeneinanderliegenden Düsen mit gleichem Neigungswinkel gebildet sind und die Gruppen bei unterschiedlichem Abstand von der Gießstrahlachse einen gleichen Neigungswinkel oder bei gleichem Abstand unterschiedliche Neigungswinkel aufweisen, wobei die Gruppen mit gleichem Abstand und gleichem Neigungswinkel der Düsen einander gegenüberliegend angeordnet sind.1. Device for the atomization of a pouring stream of liquid metal by means of a gas emerging under pressure from a plurality of nozzles, the nozzles being arranged in the lower half of a line surrounding the pouring stream and the nozzles being combined in groups such that the nozzle axes are in the pouring stream axis cut at spaced intersection points and the atomized metal forms a body on a moving surface,
characterized,
that the groups are formed from juxtaposed nozzles with the same angle of inclination and the groups at different distances from the pouring jet axis have the same angle of inclination or at the same distance different angles of inclination, the groups being arranged opposite one another with the same distance and the same angle of inclination. 2. Einrichtung nach Anspruch 1,
dadurch gekennzeichnet,
daß bei kreisringförmiger Anordnung der Düsen (12) eine Gruppe einem Quadranten eines Kreisringes entspricht.2. Device according to claim 1,
characterized,
that with a circular arrangement of the nozzles (12) a group corresponds to a quadrant of a circular ring. 3. Einrichtung nach den Ansprüchen 1 und 2,
dadurch gekennzeichnet,
daß die Gruppen mit den Düsen mit größerem Neigungswinkel in der Draufsicht von der Längsachse der Unterlage (Träger 11) für das Sprühgut (10) mittig geschnitten werden.3. Device according to claims 1 and 2,
characterized,
that the groups with the nozzles with a larger angle of inclination are cut in the plan view from the center of the longitudinal axis of the base (carrier 11) for the spray material (10). 4. Einrichtung nach den Ansprüchen 1 bis 3,
dadurch gekennzeichnet,
daß die Gruppen mit gleichem Neigungswinkel mit einem gleichen Druck des Gases beaufschlagt sind.4. Device according to claims 1 to 3,
characterized,
that the groups with the same angle of inclination are subjected to the same pressure of the gas. 5. Einrichtung nach einem der Ansprüche 1 bis 4,
dadurch gekennzeichnet,
daß die Düsen (12) auf mehreren zur Achse V konzentrischen Linien der Ringleitung (8) angeordnet sind.5. Device according to one of claims 1 to 4,
characterized,
that the nozzles (12) are arranged on several lines of the ring line (8) concentric to the axis V. 6. Einrichtung nach einem der Ansprüche 1 bis 5,
dadurch gekennzeichnet,
daß die Ringleitung (8) ovale Gestalt besitzt.6. Device according to one of claims 1 to 5,
characterized,
that the ring line (8) has an oval shape. 7. Einrichtung nach Anspruch 6,
dadurch gekennzeichnet,
daß die große und die kleine Achse ein Verhältnis von 1,1 bis 2,5 aufweist und der Anstellwinkel der Düsen (12) auf den Umfang gleich ist.7. Device according to claim 6,
characterized,
that the major and minor axes have a ratio of 1.1 to 2.5 and the angle of attack of the nozzles (12) is the same on the circumference. 8. Einrichtung nach einem der Ansprüche 1 bis 6,
dadurch gekennzeichnet,
daß die Ringleitung (8) eine länglich rechteckige Gestalt besitzt und alle Düsen einen gleichen Neigungswinkel besitzen.8. Device according to one of claims 1 to 6,
characterized,
that the ring line (8) has an elongated rectangular shape and all nozzles have the same angle of inclination. 9. Einrichtung nach den Ansprüchen 6 bis 8,
dadurch gekennzeichnet,
daß die Ringleitung (8) um ihre größere Achse drehoszillierbar ist.9. Device according to claims 6 to 8,
characterized,
that the ring line (8) is rotationally oscillatable about its larger axis.
EP89730045A 1988-03-29 1989-02-27 Apparatus for atomising a liquid-metal jet Withdrawn EP0340152A1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3811077A DE3811077A1 (en) 1988-03-29 1988-03-29 DEVICE FOR SPRAYING A SPRAYING RAY OF LIQUID METAL
DE3811077 1988-03-29

Publications (1)

Publication Number Publication Date
EP0340152A1 true EP0340152A1 (en) 1989-11-02

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EP89730045A Withdrawn EP0340152A1 (en) 1988-03-29 1989-02-27 Apparatus for atomising a liquid-metal jet

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EP (1) EP0340152A1 (en)
JP (1) JPH01278951A (en)
DE (1) DE3811077A1 (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0520442A2 (en) * 1991-06-27 1992-12-30 CENTRO SVILUPPO MATERIALI S.p.A. Device for atomizing liquid metals for powder production
EP0659898A1 (en) * 1993-12-17 1995-06-28 General Electric Company Improved molten metal spray forming atomizing ring converter
EP0852976A1 (en) * 1996-12-10 1998-07-15 Howmet Research Corporation Method and apparatus for spraycasting
AT7111U3 (en) * 2004-06-17 2005-03-25 Imr Metalle Und Technologie Gm METHOD FOR PRODUCING PRODUCTS FROM METAL

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB8824823D0 (en) * 1988-10-22 1988-11-30 Osprey Metals Ltd Atomisation of metals
DE4340102C2 (en) * 1993-11-22 1996-12-12 Mannesmann Ag Device for atomizing metal melts, in particular for the production of metal powder or metal objects
CN103008658B (en) * 2011-09-28 2015-03-04 宝山钢铁股份有限公司 Manufacturing method of high-temperature alloy blanks in large-size single crystal structures
CN105478770A (en) * 2015-12-03 2016-04-13 中国航空工业集团公司北京航空材料研究院 Double-scanning spray forming preparation method of high-carbon wear resisting tool and mold steel
JP6982015B2 (en) * 2019-02-04 2021-12-17 三菱パワー株式会社 Metal powder manufacturing equipment and its gas injector

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2046873A1 (en) * 1969-06-18 1971-03-12 Republic Steel Corp
US3909921A (en) * 1971-10-26 1975-10-07 Osprey Metals Ltd Method and apparatus for making shaped articles from sprayed molten metal or metal alloy
FR2294786A1 (en) * 1974-12-18 1976-07-16 Int Nickel Ltd METHOD AND INSTALLATION FOR THE ATOMIZATION OF METALS
FR2329387A1 (en) * 1975-10-28 1977-05-27 Inco Europ Ltd SPRAY MOLDING PROCESS AND DEVICE
DE2818720B1 (en) * 1978-04-28 1979-01-11 Elektrometallurgie Gmbh Method and device for the production of metal powder
EP0198607A1 (en) * 1985-03-25 1986-10-22 Alcan International Limited Metal matrix composite manufacture
EP0225732A1 (en) * 1985-11-12 1987-06-16 Osprey Metals Limited Production of spray deposits

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
SE334214B (en) * 1964-07-09 1971-04-19 Elektriska Svetsnings Ab
GB1272229A (en) * 1968-11-27 1972-04-26 British Iron Steel Research Improvements in and relating to the treatment of molten material
BE755514A (en) * 1969-09-04 1971-03-01 Metal Innovations Inc PROCESS AND APPARATUS FOR PRODUCING HIGH PURITY METAL POWDERS
GB1359486A (en) * 1970-06-20 1974-07-10 Vandervell Products Ltd Methods and apparatus for producing composite metal material
BE790453A (en) * 1971-10-26 1973-02-15 Brooks Reginald G MANUFACTURE OF METAL ARTICLES
US4628643A (en) * 1985-11-27 1986-12-16 Ex-Cell-O Corporation Grinding wheel infeed control method

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2046873A1 (en) * 1969-06-18 1971-03-12 Republic Steel Corp
US3909921A (en) * 1971-10-26 1975-10-07 Osprey Metals Ltd Method and apparatus for making shaped articles from sprayed molten metal or metal alloy
FR2294786A1 (en) * 1974-12-18 1976-07-16 Int Nickel Ltd METHOD AND INSTALLATION FOR THE ATOMIZATION OF METALS
FR2329387A1 (en) * 1975-10-28 1977-05-27 Inco Europ Ltd SPRAY MOLDING PROCESS AND DEVICE
DE2818720B1 (en) * 1978-04-28 1979-01-11 Elektrometallurgie Gmbh Method and device for the production of metal powder
EP0198607A1 (en) * 1985-03-25 1986-10-22 Alcan International Limited Metal matrix composite manufacture
EP0225732A1 (en) * 1985-11-12 1987-06-16 Osprey Metals Limited Production of spray deposits

Non-Patent Citations (4)

* Cited by examiner, † Cited by third party
Title
PATENT ABSTRACTS OF JAPAN, Band 10, Nr. 267 (M-516)[2323], 11. September 1986; & JP-A-61 91 303 (MITSUBISHI STEEL MFG CO., LTD) 09-05-1986 *
PATENT ABSTRACTS OF JAPAN, Band 11, Nr. 310 (M-630)[2757], 9. Oktober 1987; & JP-A-62 96 606 (KOBE STEEL LTD) 06-05-1987 *
SOVIET INVENTIONS ILLUSTRATED, Woche 8539, 8. November 1985, Nr. M22P53, Nr. 85-241684/39, Derwent Publications Ltd, London, GB; & SU-A-1144 768 (KRASD POLY) 15-03-1985 *
STAHL & EISEN, Band 107, Nr. 7, 6. April 1987, Seiten 333-336, Düsseldorf, DE; W. REICHELT et al.: "Sprühkompaktieren - ein neues Verfahren zur endabmessungs nahen Herstellung von Vormaterial" *

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0520442A2 (en) * 1991-06-27 1992-12-30 CENTRO SVILUPPO MATERIALI S.p.A. Device for atomizing liquid metals for powder production
EP0520442A3 (en) * 1991-06-27 1993-08-04 Centro Sviluppo Materiali S.P.A. Device for atomizing liquid metals for powder production
EP0659898A1 (en) * 1993-12-17 1995-06-28 General Electric Company Improved molten metal spray forming atomizing ring converter
EP0852976A1 (en) * 1996-12-10 1998-07-15 Howmet Research Corporation Method and apparatus for spraycasting
AT7111U3 (en) * 2004-06-17 2005-03-25 Imr Metalle Und Technologie Gm METHOD FOR PRODUCING PRODUCTS FROM METAL

Also Published As

Publication number Publication date
JPH01278951A (en) 1989-11-09
DE3811077A1 (en) 1989-10-19

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