EP3655178A1 - Device and method for producing metal slugs - Google Patents

Device and method for producing metal slugs

Info

Publication number
EP3655178A1
EP3655178A1 EP18735344.6A EP18735344A EP3655178A1 EP 3655178 A1 EP3655178 A1 EP 3655178A1 EP 18735344 A EP18735344 A EP 18735344A EP 3655178 A1 EP3655178 A1 EP 3655178A1
Authority
EP
European Patent Office
Prior art keywords
cavities
slugs
walls
metal
under
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
EP18735344.6A
Other languages
German (de)
French (fr)
Other versions
EP3655178B1 (en
EP3655178B8 (en
Inventor
Sébastien GRAVIER
Georges KAPELSKI
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.)
Institut Polytechnique de Grenoble
Universite Grenoble Alpes
Original Assignee
Institut Polytechnique de Grenoble
Universite Grenoble Alpes
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 Institut Polytechnique de Grenoble, Universite Grenoble Alpes filed Critical Institut Polytechnique de Grenoble
Publication of EP3655178A1 publication Critical patent/EP3655178A1/en
Publication of EP3655178B1 publication Critical patent/EP3655178B1/en
Application granted granted Critical
Publication of EP3655178B8 publication Critical patent/EP3655178B8/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
    • B22D11/00—Continuous casting of metals, i.e. casting in indefinite lengths
    • B22D11/10—Supplying or treating molten metal
    • B22D11/103—Distributing the molten metal, e.g. using runners, floats, distributors
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
    • B22D11/00—Continuous casting of metals, i.e. casting in indefinite lengths
    • B22D11/06—Continuous casting of metals, i.e. casting in indefinite lengths into moulds with travelling walls, e.g. with rolls, plates, belts, caterpillars
    • B22D11/0608—Continuous casting of metals, i.e. casting in indefinite lengths into moulds with travelling walls, e.g. with rolls, plates, belts, caterpillars formed by caterpillars
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
    • B22D11/00—Continuous casting of metals, i.e. casting in indefinite lengths
    • B22D11/06—Continuous casting of metals, i.e. casting in indefinite lengths into moulds with travelling walls, e.g. with rolls, plates, belts, caterpillars
    • B22D11/0637—Accessories therefor
    • B22D11/064—Accessories therefor for supplying molten metal
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
    • B22D23/00—Casting processes not provided for in groups B22D1/00 - B22D21/00
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
    • B22D27/00—Treating the metal in the mould while it is molten or ductile ; Pressure or vacuum casting
    • B22D27/04—Influencing the temperature of the metal, e.g. by heating or cooling the mould
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
    • B22D27/00—Treating the metal in the mould while it is molten or ductile ; Pressure or vacuum casting
    • B22D27/15—Treating the metal in the mould while it is molten or ductile ; Pressure or vacuum casting by using vacuum
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
    • B22D29/00—Removing castings from moulds, not restricted to casting processes covered by a single main group; Removing cores; Handling ingots
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
    • B22D39/00—Equipment for supplying molten metal in rations
    • B22D39/06—Equipment for supplying molten metal in rations having means for controlling the amount of molten metal by controlling the pressure above the molten metal
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
    • B22D5/00—Machines or plants for pig or like casting
    • B22D5/02—Machines or plants for pig or like casting with rotary casting tables

Definitions

  • Embodiments of the present invention relate to the field of manufacturing metal slugs.
  • metal slugs is applied to metal masses intended to be shaped, generally hot, in order to produce particular metal objects or parts, for example by injection, forging, stamping or molding. or others, and in particular in the form of pellets, pebbles or balls.
  • metals or metal alloys any metals or metal alloys, whatever their compositions and their states.
  • metallic glasses' refers to metallic materials which are not crystalline and also applies to metallic materials which are partially crystalline and which therefore contain a mass or volume fraction of crystals. , usually less than 50%.
  • the metal or molten metal alloy that exits the extrusion orifice is naturally segmented by beading.
  • the molten metal or metal alloy flows by gravity from the extrusion orifice forming a net which is segmented under the effect of a magnetic field. Then, the falling metal slugs are cooled by the ambient gas and / or during their penetration into a coolant.
  • the above extrusion methods can in particular be applied to the manufacture of small metal glass slugs, generally not exceeding millimetric dimensions when cooled in gas and larger in size when cooled. in a liquid.
  • a liquid When cooled in a liquid, there is a problem of pollution of the material constituting the slugs by the liquid.
  • US patent 2009/0308560 discloses a molding device which comprises a plurality of circumferentially rotatably displaced molding cups and a gutter for discharging the liquid metal into the cups successively during the rotational movement of the cups along that cup. circumference. The formed parts are extracted by successive tilting down the buckets.
  • FR 2 290 266 discloses a molding device which comprises an endless chain provided with plates extending outwardly. Along an upper path, the plates are close together and form molding cavities between them, which are successively filled with a liquid metal from a spout of a tilting vessel. The formed parts are discharged at a tilting end of the endless chain as the plates move apart from each other.
  • a device for manufacturing metal plots which comprises a movable support having a plurality of cavities separated by cutting walls, so that the cavities move on a course; and feeding means positioned above a location on said path and capable of forming a molten metal net, flowing under the effect of gravity, so that during continuous movement of the movable support, the continuous stream of molten metal from the feed means is divided or fragmented into pieces successively formed in said cavities, under the effect of said sectioning walls.
  • the feeding means comprises a crucible adapted to receive the metallic material and provided with at least one lower extrusion orifice, a means for heating the metallic material contained in the crucible and a pressure means acting on the surface of the metal contained in the crucible.
  • the amount of material constituting the slugs can be controlled and the slugs can be cooled in contact with the tray.
  • the movable support may comprise a rotary plate, said cavities being formed on an annular zone of this plate.
  • the device may comprise evacuation means capable of evacuating cavities from the formed metal slugs.
  • Said evacuation means may comprise pushers mounted on the plate and an actuating cam of these pushers.
  • Said evacuation means may comprise at least one nozzle capable of generating a gas and a gas.
  • Said evacuation means may comprise a deflection blade.
  • the tray may comprise at least one peripheral annular washer with an upper face adapted to receive the slugs extracted cavities.
  • the device may comprise means for evacuating the plots disposed on said flange.
  • Said cavities may respectively have a bottom and may be delimited internally by a common annular partition projecting upwards and circumferentially by cutting walls which separate them, these partition walls being able to extend in the direction of the axis of rotation to the top from the bottoms and radially outwardly from the common annular septum, so that the cavities are open upward and radially outward, opposite the common annular septum and are of equivalent shapes.
  • the device may comprise evacuation means able to evacuate cavities, radially outwardly, the metal slugs formed.
  • the bottoms of the cavities may extend in the same approximately radial plane, the upper edges of the partition walls being able to extend in the same radial plane and the partition walls being able to be distributed in equal circumferential pitches.
  • the bottoms of the cavities may be inclined towards the common annular partition.
  • the movable support may comprise a plurality of support members connected to each other in an articulated manner, forming an endless chain having an upper strand, said support members having at least one cavity, the feeding means being above a place of the course of said upper strand.
  • Said pressure means may comprise a piston.
  • Said pressure means may comprise a gas under pressure.
  • the device may comprise means for cooling said mobile support.
  • the device can be installed in a vacuum chamber or containing a neutral gas.
  • the metal may be capable of forming an at least partially amorphous metallic glass.
  • a method of manufacturing metal slugs which comprises: forming a continuous stream of molten metal material through at least one lower extrusion hole of a crucible containing the metallic material and under the effect of a pressure means acting on the surface of the metal contained in the crucible; let the molten metal stream flow, under the effect of gravity, over a course on which continuous movements of cavities of a movable support, separated by cutting walls, so that the molten metal net is divided or fragmented into pieces successively formed in said cavities, under the effect of said sectioning walls.
  • Figure 1 shows a partial perspective view of a device for manufacturing metal plots, in a situation
  • Figure 2 shows a perspective view in section of the device of Figure 1, including an ejection means
  • Figure 3 is a perspective view in section of a detail of the device of Figure 1, including another ejection means;
  • FIG. 4 shows a partial perspective view of the device of Figure 1, in another situation; and
  • FIG. 5 is a perspective view of another device for manufacturing metal billets.
  • a device 1 for manufacturing metal plots comprises a metal mobile support 2 consisting of a rotary radial plate 3 carried by a vertical shaft 4 and extending radially to this shaft .
  • the shaft 4 is connected to an electrical or hydraulic drive means (not shown) for rotating the plate 2 at a controlled rotational speed.
  • a plurality of cavities 5 On an annular zone of the plate 3 is arranged a plurality of cavities 5 so that the cavities 5 move on an annular or circular path when the plate 3 rotates.
  • the cavities 5 respectively have a bottom 6 and are delimited internally by a common annular partition 7 projecting upwards and circumferentially by sectioning walls 8 which separate them, these partition walls extending in the direction of the axis of rotation upwards from the bottoms 6 and radially outwards from the common annular septum 7.
  • sectioning walls 8 extend in the same radial plane.
  • the bottoms 6 of the cavities 5 extend approximately in a same radial plane.
  • the bottoms 6 of the cavities 5 are in the form of radial gutters situated above and adjacent to a plane that is even radial.
  • the bottoms 6 of the cavities 5 may be slightly inclined a few degrees towards the common annular septum 7.
  • the cavities 5 are open upwards and radially outwards, opposite the common annular septum 7 and are of equivalent shapes.
  • sectioning walls 8 are distributed in equal circumferential pitches, so that the cavities 5 are identical.
  • the upper part of the sectioning walls 8 is thin, or even shaped and / or serrated, so as to be able to produce a cutting effect (shear) as will be described later.
  • the device 1 comprises a feed means 9 placed above a point in the annular path of the cavities 5.
  • the feed means 9 comprises a crucible 10 which comprises a vertical cylindrical wall 11 and a bottom radial bottom 12 provided, for example in the middle, with a through-orifice 13 which is located radially approximately in the middle of the path annular cavities 5.
  • the crucible 10 can be engaged a piston 14 whose upper rod 1 5 is connected to a drive means in vertical translation (not shown).
  • the crucible 10 is equipped with a heating means 16, constituted for example by induction turns 17 which surround the cylindrical portion 11.
  • the device 1 operates in the following manner.
  • Pieces 10 of a metal material M such as a metal, several metals or a metal alloy, are deposited in the crucible.
  • the piston 14 is engaged in the crucible 10.
  • the metal material is heated until this material melts, at least partially.
  • the plateau 3 is continuously rotated.
  • the piston 14 Under the effect of the piston 14, pressure is exerted on the upper face of the metallic material M contained in the crucible 10. In doing so, the molten metal material is extruded through the extrusion orifice 13 of the crucible 10 and flows down under the effect of gravity, in the form of a continuous net F of molten metal material.
  • the piston 14 could be replaced by a gas exerting a pressure on the free surface of the metal in the crucible 10.
  • the tray 3 may be provided with channels (not shown) connected by a rotating seal to a source (not shown) of a coolant.
  • the L-shaped slugs formed have the same amount of metallic material.
  • the device 1 also comprises extraction means 1 8 able to extract cavities 5 the metal slugs L, so lidified at least at their periphery, at an extraction location before the slugs L 'reach the point where there is formed the net F of molten metal material, from the crucible 10.
  • the extraction means 1 8 comprise a plurality of radial pushers 19 which extend through radial passages 20 arranged through the portions of the common annular partition 7 corresponding to the cavities 5.
  • the radial pushers 19 have shoulders 21 located on the side of the cavities 5 and are subjected to springs 22 on the inner side of the annular partition 7.
  • the pushers occupy an inwardly retracted position, in which the shoulders 2 1 are engaged in recesses 23 of the annular partition 7 under the effect of the springs 22, leaving the cavities free. .
  • the radial pushers 19 When they pass successively to the extraction point, the radial pushers 19 are subjected to a fixed cam 24 which acts on the inner end of the pushers located on the inside of the annular partition 7. Successively, under the effect of the cam 24, the radial pushers 1 9 move radially against the springs 22 in a movement of going outwards and back inwards. During the outward movement, the radial pushers 19 radially push out the corresponding metal pieces L and extract them from the corresponding cavities 5.
  • the extraction means 18 comprise a nozzle 25 connected to a source of a gas under pressure and one end of which is situated above and in the vicinity of the annular partition 7, at the extraction location, and is oriented towards the path of the cavities 5. Under the effect of the jet of gas leaving the nozzle 25, the slugs L are successively extracted from the cavities 5, radially outwardly.
  • the slugs L could be extracted under the effect of a blade placed crosswise above the cavities 5 at the extraction point.
  • the slugs L extracted from the cavities 5 at the extraction point can be discharged by falling directly into a recovery vessel.
  • the residence time of the slugs L on the plate 3, between the feeding place and the extraction location is sufficient for the slugs L are sufficiently cooled and sufficiently solidified from their periphery.
  • the plate 3 comprises a peripheral annular collar 26 having an annular upper face 27 located at the periphery of the cavities 5, at the same level or slightly below the bottoms 6 of the cavities 5.
  • the annular upper face 27 may be radial or slightly inclined inwards a few degrees.
  • the device 1 further comprises means 28 for evacuating the slugs L placed on the chord 26 at an evacuation location located before the slugs L 'reach the extraction place where they are extracted from cavities 5.
  • the evacuation means 28 comprise a deflection plate 29 which extends above and at a short distance from the peripheral annular radiator 26.
  • the evacuation means 28 could comprise a nozzle producing a gas and a gas able to evacuate the slugs L.
  • the plate 3 could comprise a plurality of radially successive peripheral annular shells, the slugs L passing from one flange to the other under the flange. effect of successive evacuation means.
  • another device 1 A for manufacturing metal billets comprises a metal mobile support 2A constituted by a plurality of support elements 30 articulated with respect to one another, by the intermediate transverse axes 3 1, forming an endless chain carried by horizontally spaced wheels 32 and 33 and mounted on parallel transverse axes 32a and 33a, so that this endless chain has a strand 34 and a lower strand 35.
  • One of the axes 32a and 33a is connected to an electrical or hydraulic rotation drive means so as to continuously drive the endless chain constituted by the support elements 30.
  • the support elements 30 comprise blocks in each of which is formed a cavity 36 open towards the outside relative to the course of the endless chain.
  • the cavities 36 move on the same circumferential path and are identical.
  • the cavities 36 have a bottom 37 and are delimited by opposite side walls 38 and 39 and opposite transverse walls 40 and 41.
  • the end edges of the transverse walls 41 have flanges 42 capable of coming above the end edges of the transverse walls 40.
  • transverse walls 40 and 41 adj acentes of two successive support members 30 bear against each other when the support members 30 are located on the upper strand 34, the flanges 42 covering the end edges of the walls.
  • Transverse walls 40. Adjacent contiguous transverse walls 40 and 41 constitute, successively, sectioning walls 36a, separating cavities 36.
  • the transverse walls 40 and 41 are spaced apart to form spacing Vs.
  • the transverse walls 40 and 41 may be in contact or slightly apart by forming spacing V's.
  • the device 1 A comprises a supply means 43, equivalent to the extrusion feed means 9, capable of forming a continuous thread F of a molten metal material flowing downwards.
  • the feeding means 43 is placed at a feed point situated above and at a distance from the upper run 34, in a position such that the continuous thread F flows over the middle part of the path of the cavities 36. .
  • the device 1 A operates in the following manner.
  • the metal slugs L formed take a rounded shape under the effect of surface tensions, cool and at least partially, at least partially, in contact with the plate 3 and the gas which surrounds them.
  • the device 1A may be equipped with means for cooling the support elements 30.
  • these cooling means may comprise one or more fixed nozzles (not shown) connected to a source (not shown) of a cooling gas, generating cooling gas jets to the support members 30, for example over part of their path.
  • the metal slugs L formed are carried by the support elements 30 in translation along the upper run 34, then in rotation on the return wheel 33.
  • the metal slugs L successively extract cavities 36 under the effect of gravity and fall for example into a recovery container (not shown).
  • each billet L is directly a function of the flow velocity and the section of the thread F, the linear displacement velocity of the cavities 5 along the upper strand and the separation pitch of the partition walls formed by the adjacent transverse walls 40 and 41.
  • the L-shaped slugs formed comprise the same amount of metallic material.
  • the devices 1 and 1A can be housed inside controlled atmosphere enclosures, neutral vis-à-vis the metallic material implemented or vacuum.
  • the gases that may be used for cooling the supports 2 and 2A, the gases that may be used for cooling the formed slugs L and the gases that may be used to evacuate the formed slugs L may be neutral with respect to the metallic material used. implemented.
  • the devices 1 and 1 A can advantageously be used for the manufacture of metal slugs L in metallic glasses or in materials capable of forming metallic glasses, in particular based on zirconium (Zr), magnesium (Mg), iron ( Fe), copper (Cu), aluminum (Al), palladium (Pd), platinum (Pt), titanium (Ti), cobalt (Co).
  • Zr zirconium
  • Mg magnesium
  • Fe iron
  • Cu copper
  • Al aluminum
  • Pd platinum
  • Pt platinum
  • Ti titanium
  • cobalt Co
  • the weight of the slugs L formed may be between one gram to twenty grams.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Furnace Details (AREA)
  • Manufacture And Refinement Of Metals (AREA)
  • Manufacture Of Metal Powder And Suspensions Thereof (AREA)
  • Casting Support Devices, Ladles, And Melt Control Thereby (AREA)

Abstract

A device and method for producing metal slugs, in which: a movable support (1) has a plurality of cavities (5) separated by partition walls (8, 36a), such that the cavities travel over a path, a feeding means (9) is positioned above a location on said path and is capable of forming a stream of molten metal (F), flowing under the effect of gravity, such that, during the continuous movement of the movable support, the continuous stream of molten metal from the feeding means is divided or fragmented into slugs (L) formed successively in said cavities, under the effect of said partition walls.

Description

Dispositif et procédé de fabrication de lopins métalliques  Device and method for manufacturing metal slugs
Des modes de réalisation de la présente invention concernent le domaine de la fabrication de lopins métalliques. Embodiments of the present invention relate to the field of manufacturing metal slugs.
Il est précisé que l ' appellation « lopins métalliques » s ' applique à des masses métalliques destinées à être conformées, généralement à chaud, en vue de réaliser des obj ets ou pièces métalliques particulières, par exemple par inj ection, forgeage, matriçage, moulage ou autres, et se présentant notamment sous la forme de pastilles, de galets ou de billes .  It is specified that the term "metal slugs" is applied to metal masses intended to be shaped, generally hot, in order to produce particular metal objects or parts, for example by injection, forging, stamping or molding. or others, and in particular in the form of pellets, pebbles or balls.
Il est également précisé que l ' appellation « matières métalliques » s ' applique à des métaux ou des alliages métalliques, quels que soient leurs compositions et leurs états.  It is also specified that the term "metallic materials" applies to metals or metal alloys, whatever their compositions and their states.
Il est également précisé que l' appellation « verres métalliques » s ' applique à des matières métalliques qui ne sont pas cristallines et s ' applique également à des matières métalliques qui sont partiellement cristallines et qui, donc, contiennent une fraction massique ou volumique de cristaux, généralement inférieure à 50% .  It is also clarified that the term 'metallic glasses' refers to metallic materials which are not crystalline and also applies to metallic materials which are partially crystalline and which therefore contain a mass or volume fraction of crystals. , usually less than 50%.
Il est connu de fabriquer des lopins métalliques par extrusion d'une matière métallique en fusion contenue dans un creuset, au travers d'un orifice d' extrusion aménagé au travers du fond d'un creuset.  It is known to manufacture metal plots by extrusion of a molten metal material contained in a crucible, through an extrusion orifice arranged through the bottom of a crucible.
Selon une méthode d' extrusion décrite par exemple dans les brevets US 2 595 780 et EP 0 136 866, le métal ou l ' alliage métallique en fusion qui sort de l 'orifice d' extrusion se segmente naturellement par perlage.  According to an extrusion method described for example in US Pat. Nos. 2,595,780 and EP 0,136,866, the metal or molten metal alloy that exits the extrusion orifice is naturally segmented by beading.
Selon une autre méthode d' extrusion décrite dans le brevet WO 2013/ 141 879, le métal ou l ' alliage métallique en fusion s ' écoule par gravité depuis l ' orifice d' extrusion en formant un filet qui est segmenté sous l ' effet d'un champ magnétique. Puis, les lopins métalliques qui tombent sont refroidis par le gaz ambiant et/ou lors de leur pénétration dans un liquide de refroidissement. According to another extrusion method described in the patent WO 2013/141487, the molten metal or metal alloy flows by gravity from the extrusion orifice forming a net which is segmented under the effect of a magnetic field. Then, the falling metal slugs are cooled by the ambient gas and / or during their penetration into a coolant.
Les méthodes d' extrusion ci-dessus peuvent être en particulier appliquées à la fabrication de lopins en verres métalliques de petites dimensions, généralement ne dépassant pas des dimensions millimétriques lorsqu 'ils sont refroidis dans un gaz et de plus grandes dimensions lorsqu 'ils sont refroidis dans un liquide. Lorsqu'ils sont refroidis dans un liquide, il existe un problème de pollution du matériau constituant les lopins par le liquide.  The above extrusion methods can in particular be applied to the manufacture of small metal glass slugs, generally not exceeding millimetric dimensions when cooled in gas and larger in size when cooled. in a liquid. When cooled in a liquid, there is a problem of pollution of the material constituting the slugs by the liquid.
Le brevet US 2009/0308560 décrit un dispositif de moulage qui comprend une pluralité de godets de moulage disposés sur une circonférence et déplacés en rotation et une gouttière pour déverser le métal liquide dans successivement les godets lors du déplacement en rotation des godets le long de cette circonférence. Les pièces formées sont extraites par basculement successifs vers le bas des godets .  US patent 2009/0308560 discloses a molding device which comprises a plurality of circumferentially rotatably displaced molding cups and a gutter for discharging the liquid metal into the cups successively during the rotational movement of the cups along that cup. circumference. The formed parts are extracted by successive tilting down the buckets.
Le brevet FR 2 290 266 décrit un dispositif de moulage qui comprend une chaîne sans fin pourvue de plaques s ' étendant vers l ' extérieur. Le long d'un parcours supérieur, les plaques sont rapprochées et forment entre elles des cavités de moulage, qui sont successivement remplies d'un métal liquide depuis un bec verseur d'une cuve basculante. Les pièces formées sont évacuées à une extrémité de renversement de la chaîne sans fin, lorsque les plaques s ' écartent les unes des autres.  FR 2 290 266 discloses a molding device which comprises an endless chain provided with plates extending outwardly. Along an upper path, the plates are close together and form molding cavities between them, which are successively filled with a liquid metal from a spout of a tilting vessel. The formed parts are discharged at a tilting end of the endless chain as the plates move apart from each other.
Néanmoins, il subsiste toujours des difficultés pour l'obtention de lopins métalliques dont le vo lume soit calibré avec précision et qui ne soient pas dégradés ou pollués, en particulier lorsqu' il s ' agit d' obtenir des lopins en verres métalliques, ces difficultés étant considérablement accrues lorsque les lopins métalliques à obtenir doivent présenter des vo lumes plus importants, par exemple de l ' ordre de quelques millimètres cube à quelques centimètres cube.  Nevertheless, there are still difficulties in obtaining metal slugs whose volume is accurately calibrated and which are not degraded or polluted, particularly when it comes to obtaining slugs made of metallic glasses. being considerably increased when the metal slugs to be obtained must have larger volumes, for example of the order of a few cubic millimeters to a few cubic centimeters.
Il est proposé un dispositif de fabrication de lopins métalliques, qui comprend un support mobile présentant une pluralité de cavités séparées par des murets de sectionnement, de sorte que les cavités se déplacent sur un parcours ; et un moyen d' alimentation placé au-dessus d'un endroit dudit parcours et apte à former un filet de métal en fusion, s ' écoulant sous l ' effet de la gravité, de sorte que lors du mouvement continu du support mobile , le filet continu de métal en fusion issu du moyen d' alimentation est divisé ou fragmenté en lopins formés successivement dans lesdites cavités, sous l ' effet desdits murets de sectionnement. It is proposed a device for manufacturing metal plots, which comprises a movable support having a plurality of cavities separated by cutting walls, so that the cavities move on a course; and feeding means positioned above a location on said path and capable of forming a molten metal net, flowing under the effect of gravity, so that during continuous movement of the movable support, the continuous stream of molten metal from the feed means is divided or fragmented into pieces successively formed in said cavities, under the effect of said sectioning walls.
Le moyen d' alimentation comprend un creuset apte à recevoir la matière métallique et pourvu d ' au moins un orifice inférieur d' extrusion, un moyen de chauffage de la matière métallique contenue dans le creuset et un moyen de pression agissant sur la surface du métal contenu dans le creuset.  The feeding means comprises a crucible adapted to receive the metallic material and provided with at least one lower extrusion orifice, a means for heating the metallic material contained in the crucible and a pressure means acting on the surface of the metal contained in the crucible.
Ainsi, la quantité de matériau constituant les lopins peut être maîtrisée et les lopins peuvent être refroidis au contact du plateau.  Thus, the amount of material constituting the slugs can be controlled and the slugs can be cooled in contact with the tray.
Le support mobile peut comprendre un plateau rotatif, lesdites cavités étant formées sur une zone annulaire de ce plateau.  The movable support may comprise a rotary plate, said cavities being formed on an annular zone of this plate.
Le dispositif peut comprendre des moyens d' évacuation aptes à évacuer des cavités les lopins métalliques formés .  The device may comprise evacuation means capable of evacuating cavities from the formed metal slugs.
Lesdits moyens d' évacuation peuvent comprendre des poussoirs montés sur le plateau et une came d' actionnement de ces poussoirs .  Said evacuation means may comprise pushers mounted on the plate and an actuating cam of these pushers.
Lesdits moyens d' évacuation peuvent comprendre au moins une buse apte à générer un j et de gaz.  Said evacuation means may comprise at least one nozzle capable of generating a gas and a gas.
Lesdits moyens d' évacuation peuvent comprendre une lame de déviation.  Said evacuation means may comprise a deflection blade.
Le plateau peut comprendre au moins une co llerette annulaire périphérique présentant une face supérieure apte à recevoir les lopins extraits des cavités .  The tray may comprise at least one peripheral annular washer with an upper face adapted to receive the slugs extracted cavities.
Le dispositif peut comprendre des moyens d' évacuation des lopins disposés sur ladite collerette.  The device may comprise means for evacuating the plots disposed on said flange.
Lesdites cavités peuvent présenter respectivement un fond et peuvent être délimitées intérieurement par une cloison annulaire commune en saillie vers le haut et circonférentiellement par des murets de sectionnement qui les séparent, ces murets de sectionnement pouvant s ' étendre dans la direction de l ' axe de rotation vers le haut depuis les fonds et radialement vers l ' extérieur depuis la cloison annulaire commune, de sorte que les cavités sont ouvertes vers le haut et radialement vers l ' extérieur, à l ' opposé de la cloison annulaire commune et sont de formes équivalentes . Said cavities may respectively have a bottom and may be delimited internally by a common annular partition projecting upwards and circumferentially by cutting walls which separate them, these partition walls being able to extend in the direction of the axis of rotation to the top from the bottoms and radially outwardly from the common annular septum, so that the cavities are open upward and radially outward, opposite the common annular septum and are of equivalent shapes.
Le dispositif peut comprendre des moyens d' évacuation aptes à évacuer des cavités, radialement vers l ' extérieur, les lopins métalliques formés .  The device may comprise evacuation means able to evacuate cavities, radially outwardly, the metal slugs formed.
Les fonds des cavités peuvent s ' étendre dans un même plan approximativement radial, les bords supérieurs des murets de sectionnement pouvant s ' étendre dans un même plan radial et les murets de sectionnement pouvant être répartis selon des pas circonférentiels égaux.  The bottoms of the cavities may extend in the same approximately radial plane, the upper edges of the partition walls being able to extend in the same radial plane and the partition walls being able to be distributed in equal circumferential pitches.
Les fonds des cavités peuvent être inclinés en direction de la cloison annulaire commune.  The bottoms of the cavities may be inclined towards the common annular partition.
Le support mobile peut comprendre une pluralité d' éléments de support reliés les uns aux autres de façon articulée, en formant une chaîne sans fin présentant un brin supérieur, lesdits éléments de support présentant au moins une cavité, le moyen d' alimentation étant placé au-dessus d'un endroit du parcours dudit brin supérieur.  The movable support may comprise a plurality of support members connected to each other in an articulated manner, forming an endless chain having an upper strand, said support members having at least one cavity, the feeding means being above a place of the course of said upper strand.
Ledit moyen de pression peut comprendre un piston.  Said pressure means may comprise a piston.
Ledit moyen de pression peut comprendre un gaz sous pression. Said pressure means may comprise a gas under pressure.
Le dispositif peut comprendre des moyens de refroidissement dudit support mobile. The device may comprise means for cooling said mobile support.
Le dispositif peut être installé dans une enceinte sous vide ou contenant un gaz neutre.  The device can be installed in a vacuum chamber or containing a neutral gas.
Le métal peut être apte à former un verre métallique au moins partiellement amorphe .  The metal may be capable of forming an at least partially amorphous metallic glass.
Il est également proposé un procédé de fabrication de lopins métalliques, qui comprend : former un filet continu de matière métallique en fusion, au travers d ' au moins un orifice inférieur d' extrusion d 'un creuset contenant la matière métallique et sous l ' effet d'un moyen de pression agissant sur la surface du métal contenu dans le creuset ; laisser couler le filet de métal en fusion, sous l ' effet de la gravité, au-dessus d'un parcours sur lequel se déplacent en continu des cavités d'un support mobile, séparées par des murets de sectionnement, de sorte que le filet de métal en fusion est divisé ou fragmenté en lopins formés successivement dans lesdites cavités, sous l ' effet desdits murets de sectionnement. Also provided is a method of manufacturing metal slugs, which comprises: forming a continuous stream of molten metal material through at least one lower extrusion hole of a crucible containing the metallic material and under the effect of a pressure means acting on the surface of the metal contained in the crucible; let the molten metal stream flow, under the effect of gravity, over a course on which continuous movements of cavities of a movable support, separated by cutting walls, so that the molten metal net is divided or fragmented into pieces successively formed in said cavities, under the effect of said sectioning walls.
Des dispositifs de fabrication de lopins métalliques vont maintenant être décrits à titre d' exemples de réalisation non limitatifs, illustrés par le dessin annexé dans lequel :  Devices for manufacturing metal plots will now be described as nonlimiting exemplary embodiments, illustrated by the appended drawing in which:
la figure 1 représente une vue partielle en perspective d 'un dispositif de fabrication de lopins métalliques, dans une situation ;  Figure 1 shows a partial perspective view of a device for manufacturing metal plots, in a situation;
la figure 2 représente une vue en perspective et en coupe du dispositif de la figure 1 , incluant un moyen d' éj ection ;  Figure 2 shows a perspective view in section of the device of Figure 1, including an ejection means;
la figure 3 représente une vue en perspective et en coupe d'un détail du dispositif de la figure 1 , incluant un autre moyen d' éj ection ;  Figure 3 is a perspective view in section of a detail of the device of Figure 1, including another ejection means;
la figure 4 représente une vue partielle en perspective du dispositif de la figure 1 , dans une autre situation ; et la figure 5 représente une vue en perspective d'un autre dispositif de fabrication de lopins métallique.  Figure 4 shows a partial perspective view of the device of Figure 1, in another situation; and FIG. 5 is a perspective view of another device for manufacturing metal billets.
Selon un exemple de réalisation illustré sur les figures 1 à 4 , un dispositif 1 de fabrication de lopins métalliques, comprend un support mobile métallique 2 constitué par un plateau circulaire radial rotatif 3 porté par un arbre vertical 4 et s ' étendant radialement à cet arbre .  According to an exemplary embodiment illustrated in Figures 1 to 4, a device 1 for manufacturing metal plots, comprises a metal mobile support 2 consisting of a rotary radial plate 3 carried by a vertical shaft 4 and extending radially to this shaft .
L ' arbre 4 est relié à un moyen d' entraînement (non représenté) électrique ou hydraulique pour entraîner en rotation le plateau 2 à une vitesse de rotation contrôlée.  The shaft 4 is connected to an electrical or hydraulic drive means (not shown) for rotating the plate 2 at a controlled rotational speed.
Sur une zone annulaire du plateau 3 est aménagée une pluralité de cavités 5 de sorte que les cavités 5 se déplacent sur un parcours annulaire ou circulaire lorsque le plateau 3 tourne.  On an annular zone of the plate 3 is arranged a plurality of cavities 5 so that the cavities 5 move on an annular or circular path when the plate 3 rotates.
Les cavités 5 présentent respectivement un fond 6 et sont délimitées intérieurement par une cloison annulaire commune 7 en saillie vers le haut et circonférentiellement par des murets de sectionnement 8 qui les séparent, ces murets de sectionnement s ' étendant dans la direction de l ' axe de rotation vers le haut depuis les fonds 6 et radialement vers l ' extérieur depuis la cloison annulaire commune 7. The cavities 5 respectively have a bottom 6 and are delimited internally by a common annular partition 7 projecting upwards and circumferentially by sectioning walls 8 which separate them, these partition walls extending in the direction of the axis of rotation upwards from the bottoms 6 and radially outwards from the common annular septum 7.
Les bords supérieurs des murets de sectionnement 8 s ' étendent dans un même plan radial.  The upper edges of sectioning walls 8 extend in the same radial plane.
Selon une configuration illustrée sur les figures 1 à 3 , les fonds 6 des cavités 5 s ' étendent approximativement dans un plan même radial.  According to a configuration illustrated in FIGS. 1 to 3, the bottoms 6 of the cavities 5 extend approximately in a same radial plane.
Selon une autre configuration illustrée sur la figure 4, les fonds 6 des cavités 5 sont en forme de gouttières radiales situées au-dessus et adjacentes à un plan même radial.  According to another configuration illustrated in FIG. 4, the bottoms 6 of the cavities 5 are in the form of radial gutters situated above and adjacent to a plane that is even radial.
Néanmoins, les fonds 6 des cavités 5 peuvent être légèrement inclinés de quelques degrés en direction de la cloison annulaire commune 7.  Nevertheless, the bottoms 6 of the cavities 5 may be slightly inclined a few degrees towards the common annular septum 7.
Ainsi, les cavités 5 sont ouvertes vers le haut et radialement vers l ' extérieur, à l 'opposé de la cloison annulaire commune 7 et sont de formes équivalentes .  Thus, the cavities 5 are open upwards and radially outwards, opposite the common annular septum 7 and are of equivalent shapes.
Avantageusement, les murets de sectionnement 8 sont répartis selon des pas circonférentiels égaux, de sorte que les cavités 5 sont identiques.  Advantageously, the sectioning walls 8 are distributed in equal circumferential pitches, so that the cavities 5 are identical.
La partie supérieure des murets de sectionnement 8 est de faible épaisseur, voire appointée et/ou dentelée, de façon à être apte à produire un effet de sectionnement (cisaillement) comme on le décrira plus loin.  The upper part of the sectioning walls 8 is thin, or even shaped and / or serrated, so as to be able to produce a cutting effect (shear) as will be described later.
Le dispositif 1 comprend un moyen d' alimentation 9 placé au- dessus d'un endroit du parcours annulaire des cavités 5.  The device 1 comprises a feed means 9 placed above a point in the annular path of the cavities 5.
Le moyen d' alimentation 9 comprend un creuset 10 qui comprend une paroi cylindrique verticale 1 1 et un fond radial inférieur 12 pourvu, par exemple en son milieu, d'un orifice traversant d' extrusion 13 qui est situé radialement approximativement au milieu du parcours annulaire des cavités 5.  The feed means 9 comprises a crucible 10 which comprises a vertical cylindrical wall 11 and a bottom radial bottom 12 provided, for example in the middle, with a through-orifice 13 which is located radially approximately in the middle of the path annular cavities 5.
Dans le creuset 1 0 peut être engagé un piston 14 dont la tige supérieure 1 5 est reliée à un moyen d' entraînement en translation verticale (non représenté) . Le creuset 10 est équipé d'un moyen de chauffage 16, constitué par exemp le par des spires d' induction 17 qui entourent la paro i cylindrique 1 1 . In the crucible 10 can be engaged a piston 14 whose upper rod 1 5 is connected to a drive means in vertical translation (not shown). The crucible 10 is equipped with a heating means 16, constituted for example by induction turns 17 which surround the cylindrical portion 11.
Le dispositif 1 fonctionne de la manière suivante.  The device 1 operates in the following manner.
On dépose dans le creuset 10 des morceaux d'une matière métallique M, telle qu'un métal, plusieurs métaux ou un alliage métallique.  Pieces 10 of a metal material M, such as a metal, several metals or a metal alloy, are deposited in the crucible.
On engage le piston 14 dans le creuset 10.  The piston 14 is engaged in the crucible 10.
Sous l ' effet du moyen de chauffage 1 6, on chauffe la matière métallique jusqu' à mettre cette matière en fusion, au moins partiellement.  Under the effect of the heating means 166, the metal material is heated until this material melts, at least partially.
On met en rotation continue le plateau 3.  The plateau 3 is continuously rotated.
Sous l ' effet du piston 14, on exerce une pression sur la face supérieure de la matière métallique M contenue dans le creuset 10. Ce faisant, la matière métallique en fusion est extrudée au travers de l ' orifice d' extrusion 13 du creuset 10 et s ' écoule vers le bas sous l ' effet de la gravité, sous la forme d'un filet continu F de matière métallique en fusion. Selon une variante de réalisation, le piston 14 pourrait être remplacé par un gaz exerçant une pression sur la surface libre du métal dans le creuset 10.  Under the effect of the piston 14, pressure is exerted on the upper face of the metallic material M contained in the crucible 10. In doing so, the molten metal material is extruded through the extrusion orifice 13 of the crucible 10 and flows down under the effect of gravity, in the form of a continuous net F of molten metal material. According to an alternative embodiment, the piston 14 could be replaced by a gas exerting a pressure on the free surface of the metal in the crucible 10.
Lorsqu'il atteint le parcours des cavités 5 en mouvement continu, au fur et à mesure de l ' écoulement, progressivement et successivement, Le filet F de matière métallique en fusion pénètre dans les cavités 5 et est alors divisé ou segmenté, sous l ' effet des murets de sectionnement 8 , pour former des lopins métalliques L qui prennent place sur les fonds 6 des cavités 5 , en étant éventuellement en contact avec les portions correspondantes de la cloison annulaire 7 et les murets de sectionnement 8 correspondants.  When it reaches the path of the cavities 5 in continuous movement, as the flow progressively and successively, the net F of molten metal material enters the cavities 5 and is then divided or segmented, under the effect of the sectioning walls 8, to form metal slugs L which take place on the bottoms 6 of the cavities 5, possibly being in contact with the corresponding portions of the annular partition 7 and the sectioning walls 8 corresponding.
Après quoi, les lopins métalliques L formés, qui sont emmenés par le plateau 3 en rotation, prennent une forme arrondie sous l ' effet des tensions de surface, se refroidissent et se solidifient au contact du plateau 3. Dans le cas où le dispositif 1 est dans un gaz, ce gaz peut contribuer au refroidissement. Le plateau 3 peut être pourvu de canaux (non représenté) reliés par un joint tournant à une source (non représentée) d'un fluide de refroidissement. After that, the metal slugs L formed, which are led by the plate 3 in rotation, take a rounded shape under the effect of surface tensions, cool and solidify in contact with the plate 3. In the case where the device 1 is in a gas, this gas can contribute to cooling. The tray 3 may be provided with channels (not shown) connected by a rotating seal to a source (not shown) of a coolant.
Il résulte de ce qui précède que la quantité, notamment en poids, de matière métallique constituant chaque lopin L est directement fonction de la vitesse d' écoulement et de la section du filet F, de la vitesse de déplacement circonférentielle des cavités 5 et du pas circonférentiel de séparation des murets de sectionnement 8.  It follows from the foregoing that the quantity, in particular by weight, of metallic material constituting each billet L is directly a function of the flow velocity and the section of the thread F, the circumferential displacement speed of the cavities 5 and the pitch circumferential separation of sectioning walls 8.
Dans la mesure où la vitesse de déplacement circonférentielle des cavités 5 est constante, correspondant à une vitesse de rotation constante du plateau 3 , et dans la mesure où la vitesse d ' écoulement et la section du filet F sont constantes, alors les lopins L formés comportent la même quantité de matière métallique.  Insofar as the circumferential displacement speed of the cavities 5 is constant, corresponding to a constant speed of rotation of the plate 3, and insofar as the flow velocity and the section of the thread F are constant, then the L-shaped slugs formed have the same amount of metallic material.
Le dispositif 1 comprend également des moyens d' extraction 1 8 aptes à extraire des cavités 5 les lopins métalliques L, so lidifiés au moins à leur périphérie, à un endroit d' extraction situé avant que les lopins L n' atteignent l ' endroit où se trouve formé le filet F de matière métallique en fusion, issu du creuset 10.  The device 1 also comprises extraction means 1 8 able to extract cavities 5 the metal slugs L, so lidified at least at their periphery, at an extraction location before the slugs L 'reach the point where there is formed the net F of molten metal material, from the crucible 10.
Selon une variante de réalisation illustrée sur la figure 2, les moyens d' extraction 1 8 comprennent une pluralité de poussoirs radiaux 19 qui s ' étendent au travers de passages radiaux 20 aménagés au travers des portions de la cloison annulaire commune 7 correspondant aux cavités 5. Les poussoirs radiaux 19 présentent des épaulements 21 situés du côté des cavités 5 et sont soumis à des ressorts 22 du côté intérieur de la cloison annulaire 7.  According to an alternative embodiment illustrated in FIG. 2, the extraction means 1 8 comprise a plurality of radial pushers 19 which extend through radial passages 20 arranged through the portions of the common annular partition 7 corresponding to the cavities 5. The radial pushers 19 have shoulders 21 located on the side of the cavities 5 and are subjected to springs 22 on the inner side of the annular partition 7.
Hormis à l ' endroit d' extraction, les poussoirs occupent une position rétractée vers l' intérieur, dans laquelle les épaulements 2 1 sont engagés dans des évidements 23 de la cloison annulaire 7 sous l ' effet des ressorts 22, laissant libres les cavités 5.  Except at the extraction point, the pushers occupy an inwardly retracted position, in which the shoulders 2 1 are engaged in recesses 23 of the annular partition 7 under the effect of the springs 22, leaving the cavities free. .
Lorsqu' ils passent successivement à l ' endroit d' extraction, les poussoirs radiaux 19 sont soumis à une came fixe 24 qui agit sur l ' extrémité intérieure des poussoirs située du côté intérieur de la cloison annulaire 7. Successivement, sous l ' effet de la came 24, les poussoirs radiaux 1 9 se déplacent radialement à l ' encontre des ressorts 22 en un mouvement d'aller vers l'extérieur et de retour vers l'intérieur. Lors du mouvement d'aller vers l'extérieur, les poussoirs radiaux 19 poussent radialement vers l'extérieur les lopins métalliques L correspondants et extraient ces derniers des cavités 5 correspondantes. When they pass successively to the extraction point, the radial pushers 19 are subjected to a fixed cam 24 which acts on the inner end of the pushers located on the inside of the annular partition 7. Successively, under the effect of the cam 24, the radial pushers 1 9 move radially against the springs 22 in a movement of going outwards and back inwards. During the outward movement, the radial pushers 19 radially push out the corresponding metal pieces L and extract them from the corresponding cavities 5.
Selon une autre variante de réalisation illustrée sur la figure 3, les moyens d'extraction 18 comprennent une buse 25 reliée à une source d'un gaz sous pression et dont une extrémité est située au- dessus et à proximité de la cloison annulaire 7, à l'endroit d'extraction, et est orientée vers le parcours des cavités 5. Sous l'effet du jet de gaz sortant de la buse 25, les lopins L sont successivement extraits des cavités 5, radialement vers l'extérieur.  According to another variant embodiment illustrated in FIG. 3, the extraction means 18 comprise a nozzle 25 connected to a source of a gas under pressure and one end of which is situated above and in the vicinity of the annular partition 7, at the extraction location, and is oriented towards the path of the cavities 5. Under the effect of the jet of gas leaving the nozzle 25, the slugs L are successively extracted from the cavities 5, radially outwardly.
Selon une autre variante de réalisation, dans la mesure où les lopins L dépassent vers le haut, les lopins L pourraient être extraits sous l'effet d'une lame placée en travers au-dessus des cavités 5 à l'endroit d'extraction.  According to another embodiment, insofar as the slugs L protrude upwards, the slugs L could be extracted under the effect of a blade placed crosswise above the cavities 5 at the extraction point.
Les lopins L extraits des cavités 5 à l'endroit d'extraction, peuvent être évacués en tombant directement dans un récipient de récupération. Dans ce cas, la durée du séjour des lopins L sur le plateau 3, entre l'endroit d'alimentation et l'endroit d'extraction est suffisante pour que les lopins L soient suffisamment refroidis et suffisamment solidifiés depuis leur périphérie.  The slugs L extracted from the cavities 5 at the extraction point can be discharged by falling directly into a recovery vessel. In this case, the residence time of the slugs L on the plate 3, between the feeding place and the extraction location is sufficient for the slugs L are sufficiently cooled and sufficiently solidified from their periphery.
Néanmoins, il peut être avantageux d'augmenter la durée de séjour des lopins L sur le plateau 3, pour que les lopins L soient suffisamment refroidis et suffisamment solidifiés avant leur évacuation.  Nevertheless, it may be advantageous to increase the residence time of the slugs L on the plate 3, so that the slugs L are sufficiently cooled and sufficiently solidified before their evacuation.
Pour cela, le plateau 3 comprend une collerette annulaire périphérique 26 présentant une face supérieure annulaire 27 située à la périphérie des cavités 5, au même niveau ou légèrement au-dessous des fonds 6 des cavités 5. La face supérieure annulaire 27 peut être radiale ou légèrement inclinée vers l'intérieur de quelques degrés.  For this, the plate 3 comprises a peripheral annular collar 26 having an annular upper face 27 located at the periphery of the cavities 5, at the same level or slightly below the bottoms 6 of the cavities 5. The annular upper face 27 may be radial or slightly inclined inwards a few degrees.
Les lopins L extraits successivement des cavités 5 à l'endroit d'extraction se placent successivement sur la face supérieure 27 de la collerette annulaire 26 et sont déplacés lors de la rotation du plateau 3. Selon une variante de réalisation illustrée sur la figure 4, le dispositif 1 comprend en outre des moyens d' évacuation 28 des lopins L placés sur la co llerette 26, en un endroit d' évacuation situé avant que les lopins L n' atteignent l ' endroit d' extraction où ils sont extraits des cavités 5. The slugs L successively extracted from the cavities 5 at the extraction place are placed successively on the upper face 27 of the annular flange 26 and are displaced during the rotation of the plate 3. According to an alternative embodiment illustrated in FIG. 4, the device 1 further comprises means 28 for evacuating the slugs L placed on the chord 26 at an evacuation location located before the slugs L 'reach the extraction place where they are extracted from cavities 5.
Les moyens d' évacuation 28 comprennent une lame de déviation 29 qui s ' étend au-dessus et à faible distance de la co llerette annulaire périphérique 26.  The evacuation means 28 comprise a deflection plate 29 which extends above and at a short distance from the peripheral annular radiator 26.
Lorsque les lopins L rencontrent la lame de déviation 29, ils sont déviés radialement vers l ' extérieur au fur et à mesure de la rotation du plateau 3 et sont évacués. Les lopins L évacués tombent par exemple dans un récipient de récupération.  When the slugs L meet the deflection blade 29, they are deflected radially outwards as the rotation of the plate 3 and are evacuated. The evacuated L plots fall for example into a recovery container.
Selon une autre variante de réalisation, les moyens d' évacuation 28 pourraient comprendre une buse produisant un j et de gaz apte à évacuer les lopins L.  According to another variant embodiment, the evacuation means 28 could comprise a nozzle producing a gas and a gas able to evacuate the slugs L.
Selon une autre variante de réalisation, pour augmenter encore la durée de séjour des lopins L sur le plateau 3 , le plateau 3 pourrait comprendre plusieurs co llerettes annulaires périphériques, radialement successives, les lopins L passant d'une collerette à l ' autre sous l ' effet de moyens d' évacuation successifs.  According to another variant embodiment, to further increase the residence time of the slugs L on the plate 3, the plate 3 could comprise a plurality of radially successive peripheral annular shells, the slugs L passing from one flange to the other under the flange. effect of successive evacuation means.
Selon un autre exemple de réalisation illustré sur la figure 5 , un autre dispositif 1 A de fabrication de lopins métalliques, comprend un support mobile métallique 2A constitué par une pluralité d' éléments de support 30 articulés les uns par rapport aux autres, par l' intermédiaire d' axes d ' articulation transversaux 3 1 , en formant une chaîne sans fin portée par des roues de renvoi 32 et 33 espacées horizontalement et montées sur des axes transversaux parallèles 32a et 33 a, de sorte que cette chaîne sans fin présente un brin supérieur 34 et un brin inférieur 35. L 'un des axes 32a et 33 a est relié à un moyen d' entraînement en rotation électrique ou hydraulique de façon à entraîner en continu la chaîne sans fin constituée par les éléments de support 30.  According to another exemplary embodiment illustrated in FIG. 5, another device 1 A for manufacturing metal billets, comprises a metal mobile support 2A constituted by a plurality of support elements 30 articulated with respect to one another, by the intermediate transverse axes 3 1, forming an endless chain carried by horizontally spaced wheels 32 and 33 and mounted on parallel transverse axes 32a and 33a, so that this endless chain has a strand 34 and a lower strand 35. One of the axes 32a and 33a is connected to an electrical or hydraulic rotation drive means so as to continuously drive the endless chain constituted by the support elements 30.
Les éléments de support 30 comprennent des blocs dans chacun desquels est formée une cavité 36 ouverte vers l ' extérieur par rapport au parcours de la chaîne sans fin. Les cavités 36 se déplacent sur un même parcours circonférentiel et sont identiques . The support elements 30 comprise blocks in each of which is formed a cavity 36 open towards the outside relative to the course of the endless chain. The cavities 36 move on the same circumferential path and are identical.
Les cavités 36 présentent un fond 37 et sont délimitées par des parois latérales opposées 38 et 39 et des parois transversales opposées 40 et 41 . Les bords d' extrémité des parois transversales 41 présentent des rebords 42 aptes à venir au-dessus des bords d' extrémité des parois transversales 40.  The cavities 36 have a bottom 37 and are delimited by opposite side walls 38 and 39 and opposite transverse walls 40 and 41. The end edges of the transverse walls 41 have flanges 42 capable of coming above the end edges of the transverse walls 40.
Les parois transversales 40 et 41 adj acentes de deux éléments de support 30 successifs sont en appui l 'une sur l ' autre lorsque les éléments de supports 30 sont situés sur le brin supérieur 34, les rebords 42 recouvrant les bords d' extrémité des parois transversales 40. Les parois transversales adj acentes accolées 40 et 41 constituent successivement des murets de sectionnement 36a, séparant les cavités 36.  The transverse walls 40 and 41 adj acentes of two successive support members 30 bear against each other when the support members 30 are located on the upper strand 34, the flanges 42 covering the end edges of the walls. Transverse walls 40. Adjacent contiguous transverse walls 40 and 41 constitute, successively, sectioning walls 36a, separating cavities 36.
Lorsque les éléments de supports 30 contournent les roues de renvoi 32 et 33 , les parois transversales 40 et 41 s ' écartent en formant des V d' espacement. Lorsque les éléments de supports 30 sont situés sur le brin inférieur 35 , les parois transversales 40 et 41 peuvent être en contact ou légèrement écartées en formant des V d' espacement.  When the support members 30 bypass the return wheels 32 and 33, the transverse walls 40 and 41 are spaced apart to form spacing Vs. When the support members 30 are located on the lower strand 35, the transverse walls 40 and 41 may be in contact or slightly apart by forming spacing V's.
Le dispositif 1 A comprend un moyen d' alimentation 43 , équivalent au moyen d' alimentation par extrusion 9, apte à former un filet continu F d'une matière métallique en fusion s ' écoulant vers le bas. Le moyen d' alimentation 43 est placé à un endroit d' alimentation situé au-dessus et à distance du brin supérieur 34, dans une position telle que le filet continu F s ' écoule au-dessus de la partie médiane du parcours des cavités 36.  The device 1 A comprises a supply means 43, equivalent to the extrusion feed means 9, capable of forming a continuous thread F of a molten metal material flowing downwards. The feeding means 43 is placed at a feed point situated above and at a distance from the upper run 34, in a position such that the continuous thread F flows over the middle part of the path of the cavities 36. .
Le dispositif 1 A fonctionne de la manière suivante.  The device 1 A operates in the following manner.
De façon équivalente à l ' exemp le de réalisation précédent, lorsque le filet continu F de matière métallique en fusion, issu du dispositif d' alimentation 43 , atteint le parcours des cavités 36 des éléments de support 30 en mouvement continu rectiligne le long du brin supérieur 34, progressivement et successivement, le filet continu F de matière métallique en fusion pénètre dans les cavités 36 et est divisé ou segmenté, sous l ' effet des bords supérieurs des murets de sectionnement 36a constitués par les bords supérieurs des parois transversales 40 pourvues des rebords 42, pour former des lopins métalliques L qui prennent place sur les fonds 37 des cavités 36 correspondantes, en étant éventuellement en contact avec les parois 38 , 39, 40 et 41 . Equivalently with the preceding embodiment, when the continuous thread F of molten metal material, coming from the feed device 43, reaches the path of the cavities 36 of the support elements 30 in continuous rectilinear motion along the strand. 34, progressively and successively, the continuous net F of molten metal material enters the cavities 36 and is divided or segmented, under the effect of the upper edges of the walls of sectioning 36a constituted by the upper edges of the transverse walls 40 provided with flanges 42, to form metal slugs L which take place on the bottoms 37 of the corresponding cavities 36, possibly being in contact with the walls 38, 39, 40 and 41.
Après quoi, les lopins métalliques L formés prennent une forme arrondie sous l ' effet des tensions de surface, se refroidissent et se so lidifient, au moins en partie, au contact du plateau 3 et du gaz qui les environne.  After this, the metal slugs L formed take a rounded shape under the effect of surface tensions, cool and at least partially, at least partially, in contact with the plate 3 and the gas which surrounds them.
Le dispositif 1 A peut être équipé de moyens de refroidissement des éléments de support 30. Par exemple, ces moyens de refroidissement peuvent comprendre une ou plusieurs buses fixes (non représentées) reliées à une source (non représentée) d'un gaz de refroidissement, générant des j ets de gaz de refroidissement vers les éléments de support 30 , par exemple sur une partie de leur parcours.  The device 1A may be equipped with means for cooling the support elements 30. For example, these cooling means may comprise one or more fixed nozzles (not shown) connected to a source (not shown) of a cooling gas, generating cooling gas jets to the support members 30, for example over part of their path.
Les lopins métalliques L formés sont emmenés par les éléments de support 30 en translation le long du brin supérieur 34, puis en rotation sur la roue de renvoi 33.  The metal slugs L formed are carried by the support elements 30 in translation along the upper run 34, then in rotation on the return wheel 33.
Au cours du renversement des éléments de support 30 sur la roue de renvoi 33 , les lopins métalliques L s ' extraient successivement des cavités 36 sous l ' effet de la gravité et tombent par exemple dans un récipient de récupération (non représenté) .  During the overturning of the support elements 30 on the return wheel 33, the metal slugs L successively extract cavities 36 under the effect of gravity and fall for example into a recovery container (not shown).
Il résulte de ce qui précède que la quantité, notamment en poids, de matière métallique constituant chaque lopin L est directement fonction de la vitesse d' écoulement et de la section du filet F, de la vitesse de déplacement linéaire des cavités 5 le long du brin supérieur et du pas de séparation des murets de sectionnement constitués par les parois transversales adj acentes 40 et 41 .  It follows from the foregoing that the quantity, in particular by weight, of metal material constituting each billet L is directly a function of the flow velocity and the section of the thread F, the linear displacement velocity of the cavities 5 along the upper strand and the separation pitch of the partition walls formed by the adjacent transverse walls 40 and 41.
Dans la mesure où la vitesse de déplacement linéaire des cavités 36 est constante, correspondant à une vitesse de rotation constante de la roue de renvoi 32 et 33 , et dans la mesure où la vitesse d' écoulement et la section du filet F sont constantes, alors, les lopins L formés comportent la même quantité de matière métallique. Les dispositifs 1 et 1A peuvent être logés à l' intérieur d' enceintes à atmosphère contrôlée, neutre vis-à-vis de la matière métallique mise en œuvre ou sous vide. Les gaz éventuellement utilisés pour refroidir les supports 2 et 2A, les gaz éventuellement utilisés pour refroidir les lopins L en cours de formation formés et les gaz éventuellement utilisés pour évacuer les lopins L formés peuvent être neutres vis-à-vis de la matière métallique mise en œuvre. Insofar as the linear displacement speed of the cavities 36 is constant, corresponding to a constant rotational speed of the deflection wheel 32 and 33, and insofar as the flow velocity and the section of the thread F are constant, then, the L-shaped slugs formed comprise the same amount of metallic material. The devices 1 and 1A can be housed inside controlled atmosphere enclosures, neutral vis-à-vis the metallic material implemented or vacuum. The gases that may be used for cooling the supports 2 and 2A, the gases that may be used for cooling the formed slugs L and the gases that may be used to evacuate the formed slugs L may be neutral with respect to the metallic material used. implemented.
Les dispositifs 1 et 1 A peuvent avantageusement être utilisés pour la fabrication de lopins métalliques L en verres métalliques ou en des matières aptes à former des verres métalliques, en particulier à base de zirconium (Zr), de magnésium (Mg), de fer (Fe), de cuivre (Cu), d' aluminium (Al), de palladium (Pd), de platine (Pt), de titane (Ti), de cobalt (Co) . Par exemple, le poids des lopins L formés peut être compris entre un gramme à vingt grammes .  The devices 1 and 1 A can advantageously be used for the manufacture of metal slugs L in metallic glasses or in materials capable of forming metallic glasses, in particular based on zirconium (Zr), magnesium (Mg), iron ( Fe), copper (Cu), aluminum (Al), palladium (Pd), platinum (Pt), titanium (Ti), cobalt (Co). For example, the weight of the slugs L formed may be between one gram to twenty grams.

Claims

REVENDICATIONS
1. Dispositif de fabrication de lopins métalliques, comprenant : un support mobile (1, 1A) présentant une pluralité de cavitésA device for manufacturing metal slugs, comprising: a movable support (1, 1A) having a plurality of cavities
(5, 36) séparées par des murets de sectionnement (8, 36a), de sorte que les cavités se déplacent sur un parcours, et (5, 36) separated by cutting walls (8, 36a), so that the cavities move on a path, and
un moyen d'alimentation (9, 43) placé au-dessus d'un endroit dudit parcours et apte à former un filet de métal en fusion (F), s'écoulant sous l'effet de la gravité, de sorte que lors du mouvement continu du support mobile, le filet continu de métal en fusion issu du moyen d'alimentation est divisé ou fragmenté en lopins (L) formés successivement dans lesdites cavités, sous l'effet desdits murets de sectionnement ;  a feeding means (9, 43) placed above a location on said path and capable of forming a molten metal net (F) flowing under the effect of gravity, so that during continuous movement of the movable support, the continuous stream of molten metal from the feed means is divided or fragmented into pieces (L) formed successively in said cavities, under the effect of said sectioning walls;
dans lequel le moyen d'alimentation comprend un creuset (11) apte à recevoir la matière métallique et pourvu d'au moins un orifice inférieur d'extrusion (13), un moyen de chauffage (16) de la matière métallique contenue dans le creuset et un moyen de pression (14) agissant sur la surface du métal contenu dans le creuset.  wherein the feed means comprises a crucible (11) adapted to receive the metallic material and provided with at least one lower extrusion orifice (13), means for heating (16) the metallic material contained in the crucible and pressure means (14) acting on the surface of the metal contained in the crucible.
2. Dispositif selon la revendication 1, dans lequel le support mobile comprend un plateau rotatif (3), lesdites cavités (5) étant formées sur une zone annulaire de ce plateau.  2. Device according to claim 1, wherein the movable support comprises a rotary plate (3), said cavities (5) being formed on an annular zone of this plate.
3. Dispositif selon la revendication 2, comprenant des moyens d'évacuation (18, 28) aptes à évacuer des cavités les lopins métalliques formés.  3. Device according to claim 2, comprising evacuation means (18, 28) able to evacuate cavities formed metal slugs.
4. Dispositif selon la revendication 3, dans lequel lesdits moyens d'évacuation (18) comprennent des poussoirs (19) montés sur le plateau et une came (24) d'actionnement de ces poussoirs.  4. Device according to claim 3, wherein said discharge means (18) comprises pushers (19) mounted on the plate and a cam (24) for actuating these pushers.
5. Dispositif selon la revendication 3, dans lequel lesdits moyens d'évacuation (18) comprennent au moins une buse apte à générer un jet de gaz.  5. Device according to claim 3, wherein said evacuation means (18) comprise at least one nozzle capable of generating a jet of gas.
6. Dispositif selon la revendication 3, dans lequel lesdits moyens d'évacuation (28) comprennent une lame de déviation (29).  6. Device according to claim 3, wherein said evacuation means (28) comprise a deflection blade (29).
7. Dispositif selon l'une quelconque des revendications 2 à 6, dans lequel le plateau comprend au moins une collerette annulaire périphérique (26) présentant une face supérieure (27) apte à recevoir les lopins extraits des cavités. 7. Device according to any one of claims 2 to 6, wherein the plate comprises at least one annular flange. peripheral (26) having an upper face (27) adapted to receive the slugs extracted cavities.
8. Dispositif selon la revendication 7, comprenant des moyens d' évacuation (29) des lopins disposés sur ladite collerette .  8. Device according to claim 7, comprising means for evacuating (29) the plots disposed on said flange.
9. Dispositif selon l'une quelconque des revendications 2 à 8 , dans lequel lesdites cavités (5) présentent respectivement un fond (6) et sont délimitées intérieurement par une cloison annulaire commune (7) en saillie vers le haut et circonférentiellement par des murets de sectionnement (8) qui les séparent, ces murets de sectionnement s ' étendant dans la direction de l ' axe de rotation vers le haut depuis les fonds (6) et radialement vers l ' extérieur depuis la cloison annulaire commune (7), de sorte que les cavités (5 ) sont ouvertes vers le haut et radialement vers l ' extérieur, à l ' opposé de la cloison annulaire commune (7) et sont de formes équivalentes,  9. Device according to any one of claims 2 to 8, wherein said recesses (5) respectively have a bottom (6) and are internally delimited by a common annular partition (7) projecting upwards and circumferentially by walls severing section (8) separating them, said sectioning walls extending in the direction of the axis of rotation upward from the bottoms (6) and radially outwardly from the common annular partition (7), whereby the cavities (5) are open upwards and radially outwards, opposite the common annular wall (7) and are of equivalent shape,
et comprenant des moyens d' évacuation ( 1 8 , 28) aptes à évacuer des cavités, radialement vers l ' extérieur, les lopins métalliques formés .  and comprising evacuation means (1 8, 28) able to evacuate cavities, radially outwardly, the formed metal slugs.
10. Dispositif selon l'une quelconque des revendications 2 à 9, dans lequel les fonds (6) des cavités (5 ) s ' étendent dans un même plan approximativement radial, les bords supérieurs des murets de sectionnement (8) s ' étendent dans un même plan radial et les murets de sectionnement (8) sont répartis selon des pas circonférentiels égaux.  10. Device according to any one of claims 2 to 9, wherein the bottoms (6) of the cavities (5) extend in the same approximately radial plane, the upper edges of the cutting walls (8) extend into the same radial plane and the partition walls (8) are distributed in equal circumferential pitches.
1 1 . Dispositif selon l'une quelconque des revendications 2 à 10 , dans lequel les fonds (6) des cavités (5) sont inclinés en direction de la cloison annulaire commune (7) .  1 1. Device according to any one of claims 2 to 10, wherein the bottoms (6) of the cavities (5) are inclined towards the common annular partition (7).
12. Dispositif selon la revendication 1 , dans lequel le support mobile comprend une pluralité d' éléments de support (30) reliés les uns aux autres de façon articulée, en formant une chaîne sans fin présentant un brin supérieur (34), lesdits éléments de support présentant au moins une cavité (36), le moyen d' alimentation étant placé au-dessus d'un endroit du parcours dudit brin supérieur.  The device according to claim 1, wherein the movable support comprises a plurality of support members (30) hingedly connected to each other, forming an endless chain having an upper strand (34), said members support having at least one cavity (36), the feeding means being placed above a location on the path of said upper run.
13. Dispositif selon l'une quelconque des revendications 1 à 12 , dans lequel ledit moyen de pression comprend un piston ( 14) . 13. Device according to any one of claims 1 to 12, wherein said pressure means comprises a piston (14).
14. Dispositif selon l'une quelconque des revendications 1 à 13 , dans lequel ledit moyen de pression comprend un gaz sous pression. 14. Device according to any one of claims 1 to 13, wherein said pressure means comprises a gas under pressure.
15. Dispositif selon l'une quelconque des revendications précédentes, comprenant des moyens de refroidissement dudit support mobile.  15. Device according to any one of the preceding claims, comprising means for cooling said movable support.
16. Procédé de fabrication de lopins métalliques comprenant : former un filet continu (F) de matière métallique en fusion, au travers d' au moins un orifice inférieur d' extrusion ( 13) d' un creuset ( 1 1 ) contenant la matière métallique et sous l ' effet d'un moyen de pression ( 14) agissant sur la surface du métal contenu dans le creuset ; laisser couler le filet de métal en fusion, sous l ' effet de la gravité, au-dessus d'un parcours sur lequel se déplacent en continu des cavités (5 , 36) d'un support mobile ( 1 , 1 A), séparées par des murets de sectionnement (8 , 36a), de sorte que le filet de métal en fusion est divisé ou fragmenté en lopins (L) formés successivement dans lesdites cavités, sous l ' effet desdits murets de sectionnement.  A method of manufacturing metal slugs comprising: forming a continuous net (F) of molten metal material through at least one lower extrusion orifice (13) of a crucible (11) containing the metallic material and under the effect of pressure means (14) acting on the surface of the metal contained in the crucible; flowing the molten metal net, under the effect of gravity, over a path on which continuously moves cavities (5, 36) of a movable support (1, 1 A), separated by cutting walls (8, 36a), so that the molten metal net is divided or fragmented into pieces (L) formed successively in said cavities, under the effect of said sectioning walls.
EP18735344.6A 2017-07-17 2018-07-09 Method and apparatus of producing metallic billets Active EP3655178B8 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR1756745A FR3068900B1 (en) 2017-07-17 2017-07-17 DEVICE AND METHOD FOR MANUFACTURING METAL SHEETS
PCT/EP2018/068574 WO2019016015A1 (en) 2017-07-17 2018-07-09 Device and method for producing metal slugs

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EP3655178A1 true EP3655178A1 (en) 2020-05-27
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EP3655178B8 EP3655178B8 (en) 2021-06-16

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Publication number Priority date Publication date Assignee Title
US650372A (en) * 1899-04-07 1900-05-29 David T Croxton Casting apparatus.
US2595780A (en) * 1949-12-23 1952-05-06 Gen Electric Method of producing germanium pellets
DE1239066B (en) * 1965-03-05 1967-04-20 Ullrich & Roser Ges Mit Beschr Device for continuous molding and casting of metallic workpieces
ZA734874B (en) * 1972-08-05 1974-06-26 Rheinstahl Ag Process for teeming starting material for rolling mills and installations for applying the process
US3993119A (en) 1974-11-08 1976-11-23 Norton Company Progressively or continuously cycled mold for forming and discharging a fine crystalline material
DE3485382D1 (en) 1983-09-30 1992-02-06 Toshiba Kawasaki Kk METHOD FOR PRODUCING A LOW-MELTING ALLOY FOR SEALING FLUORESCENT LAMPS.
US4589467A (en) * 1984-08-01 1986-05-20 Hunter Automated Machinery Corporation Mold handling system
JP2540619B2 (en) * 1988-11-18 1996-10-09 新東工業株式会社 Operation method of molten metal pressure feeding and holding furnace
US7849910B2 (en) * 2008-06-12 2010-12-14 Pcc Airfoils, Inc. Method and apparatus for casting metal articles
CN104582877A (en) * 2012-03-23 2015-04-29 苹果公司 Continuous moldless fabrication of amorphous alloy ingots

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FR3068900A1 (en) 2019-01-18
EP3655178B1 (en) 2021-05-05
EP3655178B8 (en) 2021-06-16
US11097336B2 (en) 2021-08-24
WO2019016015A1 (en) 2019-01-24
FR3068900B1 (en) 2021-12-03
US20200238369A1 (en) 2020-07-30

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