EP3250336B1 - Ausschüttelverfahren und maschine für einen anguss von lost-pattern-gussstücken - Google Patents

Ausschüttelverfahren und maschine für einen anguss von lost-pattern-gussstücken Download PDF

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Publication number
EP3250336B1
EP3250336B1 EP16703566.6A EP16703566A EP3250336B1 EP 3250336 B1 EP3250336 B1 EP 3250336B1 EP 16703566 A EP16703566 A EP 16703566A EP 3250336 B1 EP3250336 B1 EP 3250336B1
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EP
European Patent Office
Prior art keywords
cluster
shell
blade
castings
movement
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EP16703566.6A
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English (en)
French (fr)
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EP3250336A1 (de
Inventor
Alain GRANDIN
Vincent AUFFRET
Jean-Claude DEL RE
Arnaud JEAN-BART
Gabriel SAUNIER
Jean-Pierre VINCETTE
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Safran Aircraft Engines SAS
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Safran Aircraft Engines SAS
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    • 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
    • B22D29/00—Removing castings from moulds, not restricted to casting processes covered by a single main group; Removing cores; Handling ingots
    • B22D29/04—Handling or stripping castings or ingots
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22C—FOUNDRY MOULDING
    • B22C7/00—Patterns; Manufacture thereof so far as not provided for in other classes
    • B22C7/02—Lost patterns

Definitions

  • the invention relates to the unhinging of clusters of cast metal parts lost model.
  • the lost-model (or lost-wax) foundry process is a well-known foundry process used in particular for the manufacture of turbine blades, especially aeronautical turbines, in particular turbomachines. This method is for example described in the document WO2014 / 049223 .
  • this foundry process for the manufacture of a cluster of parts we obtain a cluster of parts formed in a shell or shell.
  • This shell is typically ceramic. It is here called indifferently carapace or shell mold.
  • the stall is done by striking on the shell with a hammer so as to break it and detach from the bunch of pieces.
  • this technique has two disadvantages: firstly, it is painful and tiring for the operators in charge of these operations; moreover, it can create mechanical stresses in foundry pieces. These mechanical stresses may, during the subsequent heat treatment, result in the appearance of metallurgical defects called 'recrystallized grains'. These recrystallized metal grains are areas of weakness that reduce the life of the parts obtained and may lead to the scrapping thereof.
  • the object of the invention is to propose a process for unclamping clusters of lost-model foundry metal parts in which the two disadvantages indicated above are eliminated or at least reduced.
  • This object is achieved according to the invention by means of a method of unhinging a cluster of lost-model foundry metal parts in which, the cluster of parts being formed in a shell, at least one blade is displaced using a machine, without contact with the cluster, so that the blade engages the shell, breaks it into a plurality of fragments, and detaches from the cluster at least a portion of the shell.
  • blade is meant a tooling surface provided to engage an outer body, particularly in this case the shell of the cluster.
  • the displacement of the blade or blades for the shakeout of the cluster of parts occurs at a reduced speed; for example, at a speed less than 0.2 m / s, or even less than 0.05 m / s. This reduces the impact between the blade and the shell and the risk of damage to the parts.
  • the invention can also be implemented without impact with the shell; that is to say that during the first contact between the blade (s) and the shell, the speed of the blades is almost zero.
  • the movement of the stall blade (s) can be done without stopping.
  • the speed of movement of the blade or blades may for example be substantially constant.
  • the method is implemented by means of a machine to ensure that the blade or blades move under the conditions (including no contact with the cluster at the parts) indicated.
  • the machine advantageously avoids the tiring operation of shaking the clusters with the hammer.
  • the efficiency of the process results from the fact that the shell formed around foundry pieces is a fragile piece, having a relatively low adhesion on the foundry parts constituting the cluster. Also advantageously, even if the blade or blades of the tool do not come into contact, far from it, with all parts of the shell, their engagement with some protruding parts or 'protuberances' of the shell is enough to fracture almost completely this one, and consequently to uncheck the castings.
  • the projecting parts or protuberances at which the mold-shell is fractured may for example be formed around a heat shield provided in the mold-shell.
  • Such a heat shield serves to improve the cooling of the cluster during and after casting (An example of a heat shield is described in the document FR2874340 ). In particular, it serves to maintain the solidification front (solid / liquid interface during the cooling of the foundry cluster in the mold) as horizontal as possible.
  • the blade or blades engage protrusions of the mold-shell and only these (excluding the cluster itself), it is not necessary that the blade approaches close to the parts to be unchecked. On the contrary, to reduce as much as possible the mechanical stresses applied to the surface of the parts, it is even preferable that the displacement of the blade and the contact with the shell is made at a certain distance from the parts.
  • the method according to the invention can often be implemented with one or more blade (s) and / or movements of this or these blade (s) extremely simple.
  • the speed of the blade may be constant.
  • the displacement of the at least one blade for unhitching the part bundle consists solely of a translational movement.
  • This movement can in particular be carried out in a direction parallel to an axis of the cluster (the axis of casting, or the axis of symmetry or axisymmetry of the cluster).
  • This axis is generally oriented vertically during the casting of the cluster.
  • this movement of said at least one blade may also comprise a movement that is not parallel to an axis of the cluster, for example a rotational movement. It can thus possibly be constituted solely by a rotational movement.
  • the displacement can be any, depending on the possibilities (number of degrees of freedom or number of axes) of the machine on which the blade is fixed, and the geometry of the cluster.
  • the movement of said at least one blade comprises a passage between any pair of adjacent pieces of said pieces. Indeed, in the case of a pair of adjacent parts, the passage of a blade between the two parts of the pair of adjacent parts ensures that the carapace portion possibly connecting these parts is fractured, which facilitates the separation between the carapace and the cluster.
  • the parts of the cluster are distributed around a casting axis
  • the parts are distributed over a circle around the casting axis. They are then adjacent two by two along the circumference of said circle.
  • said at least one blade is constituted by a plurality of blades, and during the displacement of said plurality of blades, all said blades come into contact with the shell substantially at the same time. This makes it easier to detach the shell from the cluster.
  • the invention also relates to a process for manufacturing castings comprising the following steps: a cluster of lost-model foundry pieces is produced, the part-bundle being formed in a shell, and then at least a portion of the pieces are discarded. of the carapace by the process of unplugging the foundry cluster defined previously.
  • the invention also relates to a machine of shakeout of cluster of pieces of foundry to lost model, the cluster of pieces being formed in a carapace, the machine comprising a frame with rigid attachment means of the shell on the frame; at least one blade; at least one actuator adapted to move said at least one blade relative to the frame, in a space provided for fixing the cluster.
  • the actuator is provided for moving said at least one blade relative to the frame in the space provided for fixing the cluster at a speed of less than 0.2 m / s, or even less than 0.05 m / sec. s.
  • the machine can be a relatively simple press.
  • the actuator (s) may include an actuator adapted to move at least one blade for unhitching the part bundle only by a translational movement or only by a rotational movement.
  • the actuator (s) may include in particular a jack. This jack can ensure the displacement of said at least one blade, in particular in translation.
  • Said at least one blade is preferably non-rotating (it is neither a drill nor a mill).
  • said at least one blade is constituted by a plurality of blades integrated into a tool.
  • These blades can in particular be rigidly fixed to each other within the tooling.
  • They can in particular be oriented (extend) in directions substantially perpendicular to the direction of movement of the tool.
  • They may in particular be elongated and be formed on tooling portions, for example in the form of fingers, directed in radial directions relative to a center of the tooling.
  • the machine is provided for the unhinging of a cluster of pieces formed in a shell.
  • the actuator or actuators are provided, depending on the configuration of the cluster, so as to move the blade or blades without shock relative to the cluster and without contact with the blades so as to separate at least a portion of the shell of the bunch.
  • the invention also relates to an assembly comprising a shake machine as defined above, and a cluster of lost model casting parts, the cluster of parts being formed in a shell ;
  • the shakeout machine is adapted to allow the attachment of said cluster on the frame;
  • said at least one actuator is adapted, when the cluster is fixed on the frame, to move said at least one blade relative to the cluster and without contact with the cluster, so that said at least one blade engages the shell, breaks it into a plurality of fragments, and detaches from the cluster at least a portion of the shell.
  • the shell in the vicinity of each piece of the cluster, has at least one protuberance that said at least one blade engages during said movement.
  • This or these protuberance (s) are one or portions (s) of the shell containing no part of the cluster; thus, the blade (s) can engage the protrusion (s) without risk of hitting the cluster.
  • This or these protuberance (s) preferably extend to at least 6 mm, and preferably at least 8 mm, of the room in the vicinity of which it is located.
  • At least one of the protuberances surrounds at least one of the parts of the cluster 360 ° in view along an axis of the cluster.
  • This protuberance may in particular be a heat shield to improve the cooling of the cluster during the casting and cooling of the metal.
  • the protuberances are disposed substantially in a plane.
  • At least a portion of the protuberances are formed around or from a tray-shaped piece pierced with holes.
  • This part is mostly intended to form a heat shield.
  • the blade production process presented is a lost model foundry process ( Fig.1 ).
  • the first step S1 of this method consists in manufacturing a model of cluster 21 in wax ( Fig.2 ), still called 'non-permanent cluster'. Then, around the wax cluster model, a shell mold 1 is manufactured in a manner known per se.
  • the cluster model 21 comprises a plurality of blade models 22, connected by auxiliary parts 23.
  • These auxiliary parts 23 comprise two additional parts 14 in the form of a disc, made waxen.
  • Each of these additional pieces 14 is in the form of a plate pierced with holes through which the blade patterns 22 pass.
  • the dawn patterns 22 are all identical to each other. They are arranged in a circle axisymmetrically about an axis X, said casting axis.
  • the X axis is disposed in the vertical direction during the foundry operation, when molten metal is poured into the shell mold 1 (operation discussed in more detail below).
  • the blade models 22 are arranged parallel to the X axis.
  • a second step S2 the shell mold 1 is manufactured from the wax cluster 21 (this step is described in greater detail in the document WO2014 / 049223 ).
  • this step is described in greater detail in the document WO2014 / 049223 .
  • two additional parts of shell are obtained directly from the additional pieces 14 added to the cluster model 21.
  • step S2 consists of removing the wax from the bunch model from the mold. This removal of the wax is achieved by wearing the shell mold in an autoclave mold (or other) at a temperature above the melting temperature of the wax.
  • the additional carapace portions define cavities, referred to herein as 'additional cavities'.
  • a third step S3 the blade cluster 32 is formed in the shell mold 1 by casting molten metal into the shell mold 1.
  • the result of the casting differs according to whether or not the additional cavities are connected to the main cavity:
  • the additional cavities are not in communication with the main cavity; the communication between these cavities and the main cavity has for example been deliberately blocked. These cavities then remain empty during casting and do not fill with metal.
  • the additional cavities are in communication with the main cavity. They fill up then during the casting.
  • a fourth step S4 after cooling and solidification of the metal in the shell mold 1, the cluster 30 is unchecked from the shell mold 1.
  • the stall consists in breaking up the shell by acting on the additional shell parts. During this step, contact with the solidified metal should be avoided.
  • each of the blades 32 is separated from the rest of the cluster 30 and finished by finishing processes, for example machining processes.
  • the invention particularly relates to the shakeout method implemented during the fourth step S4 indicated above.
  • This stalling process is implemented by means of a shaking machine 40 ( Fig.4 ).
  • This machine 40 comprises a frame or structure 42, a tooling 50 and an actuator 46.
  • the frame 42 comprises fixing lugs or pins 44 (of the valet type), which make it possible to rigidly fix the shell mold 1 containing the blade cluster 30 on a perforated plate 41 of the frame 42.
  • the perforated portions of this plate which serve to evacuate the fragments of the shell mold during the shakeout operation, are not shown.
  • the pins 44 make it possible to fix the shell mold 1 so that the axis of symmetry (X) of this mold is oriented in the vertical direction.
  • the actuator 46 is a linear jack. It is arranged to move the tooling 50 vertically in the downward direction along the X axis of the shell mold 1.
  • Tooling 50 ( Fig.6 ) has a cage shape, with an upper disk 54, and a lower disk 52 fixed on the disk 54 by four vertical metal bars 56.
  • the tooling 50 is fixed on the output shaft 48 of the jack 46 by a sleeve 58 fixed on the upper outer surface of the disk 54, and in which the end of the shaft 48 is fixed.
  • the upper disk 54 is therefore the trained part of the tooling 50.
  • the lower disc 52 is the working part of the tooling 50, namely the part that includes the blade 64 which engages the shell mold 1 to allow the shaving of the blade cluster 30.
  • the disk 52 has in its central part a large opening 60 of generally circular shape ( Fig.6 ). On the periphery of this opening 60 are provided shaking fingers 62. These fingers are disc portions which extend from the peripheral ring 61 of the disc 52 in a radial direction reentrant towards the axis X of the machine 40 .
  • the lower surface of the disk 52 (under the fingers 62 and under the peripheral ring 61) constitutes the blade 64.
  • This blade 64 is provided to engage the shell mold 1, when the cylinder 46 moves the tooling 50 downwards ( arrows A, Fig.3 ).
  • the jack 46 is provided to move the tool 50 - and therefore the blade 64 - in translation relative to the frame at a constant speed of less than 0.2 m / s.
  • the choice of a rather low speed makes it possible to avoid creating too large constraints of stress on the casting cluster when the blades are unstuck, and thus to avoid creating mechanical stresses capable of generating grains recrystallized during the treatment. thermal.
  • the shakeout machine 40 is designed such that during the downward movement of the tooling 50, the jack 46 moves the blade 64 (and more generally, the tooling 50) without contact with the cluster 30, particularly without contact. with the blades.
  • the disk 52 is arranged so that the blade cluster 30 can pass without contact in its opening 60.
  • the shake machine 40 is further designed so that during the downward movement of the tooling 50, the blade 64 engages different parts of the shell mold 1, said protuberances, and detaches from the cluster 30 most of the carapace .
  • these protuberances are constituted by the additional parts of shell forming the heat shields 13 and 13 '.
  • the disc 52 is provided to come into contact with the shell mold 1 at the protuberances (the heat shields 13 and 13 '). However, the disk 52 (and thus the blade 64) must not come into contact with the (metallic) cluster 30.
  • the protuberances are constituted by the additional parts of the shell, that is to say the heat shields 13 and 13 '. Depending on the mode of implementation, these additional parts are empty, or filled or partially filled with metal: In the first embodiment of the process mentioned above, the protuberances are empty. In this case, so that the disk 52 can descend without coming into contact with the cluster 30, it suffices that the disk 52 engages or interferes with the additional part of the shell, while maintaining a sufficient safety distance with respect to the cluster 30. The disk 52 can in this case come largely in contact with the additional parts of shell (heat shields 13 and 13 ').
  • the protuberances or heat shields 13,13 ' are partially or completely filled with metal.
  • the zone of radial interference between the disk 52 and the heat shield 13 can extend only over a short distance d1 between the disk 52 and the shell mold 1.
  • the trajectory of the disk 52 is intended to allow in no case a contact between the disk and the cluster 30; for this purpose, it is provided that a safety distance d2 at all times separates the disk 52 from the cluster 30.
  • the shape of the disc 52 is provided so that the contact between the latter and the shell mold occurs first on the upper heat shield 13. This implies in particular that the disc 52 is arranged inversely so as to do not come into contact with parts of the mold 1 located above the screen 13, such as in particular the upper projections 38 of the shell mold 1 ( 5B ).
  • the screen 13 constitutes a 'protrusion' that the blade 64 engages during the movement of the tooling 50 according to the invention; which is not the case of projections 38.
  • the heat shield 13 is situated at a certain distance from the blades, the mechanical stresses applied to the blades during the contact between the blades 64 and the shell mold are relatively small and do not create zones capable of creating recrystallized grains.
  • the blade 64 then applies on the surface of the screen 13 (as protuberance) a force that tends to split the ceramic shell into fragments; the rupture lines propagate and extend from the protuberance to the rest of the shell.
  • the descent of the tool 50 continues, it hits the mold-shell 1 (moderate speed) and continues its descent movement by exerting a force on the mold-shell.
  • the shell-mold 1 which is fragile, breaks into a large number of fragments; under the effect of gravity, most of these fragments are detached from the cluster 30 and fall. The bulk of the shake-out of the cluster is thus achieved in a single simple and fast operation.
  • the blade 64 After striking the heat shield 13 constituting an upper protrusion, continuing its descent the blade 64 strikes the heat shield 13 ', which constitutes a lower protuberance. It then breaks the remaining parts of the carapace mold and thus completes the stall of it (except for some remaining parts eventually).
  • the tooling 50 presented above has the advantage of being implemented by a simple translational movement. This is made possible by the fact that the shape of the shell mold 1 allows the passage of the tool when it descends in the vertical direction (X axis).
  • a more complex shake machine including including different shake tools, may be necessary when the shape of the shell mold does not allow to achieve the disengagement of the cluster by moving a tool by a simple translational movement.
  • FIG. 7A, 7B and 7C An example of such a situation is illustrated by the Figures 7A, 7B and 7C .
  • the vanes of a cluster 130 which must be unchecked from a shell mold 101 have protrusions 138 very prominent. These protrusions 138 are incompatible with tooling down vertically without hitting the shell mold 101 at the right of these protrusions, but by engaging the heat shield 113 ( 7A ).
  • the parts of the machine 140 or the mold 101 which have a structure and / or a function identical or similar to that (s) of the corresponding part of the machine 40 or the mold 1 bear the reference of this corresponding part, increased by 100 .
  • the stalling machine 140 comprises a frame 142 with a perforated plate 141 on which the shell mold 101 can be fixed, a tool 150, and actuators 146.
  • the tooling 150 is not constituted in a single rigid part as the tooling 50, but in four parts (It can naturally be made in any number of parts, other than four). Each of these four parts comprises a plate 152 in the general shape of disk quarter, these four plates being identical.
  • the shake machine 140 comprises four rotary actuators 146 identical to each other.
  • Each actuator 146 is a rotary jack adapted to rotate one of the trays 152 about a horizontal axis.
  • each of the trays 152 includes a flange portion 158 provided to allow the tray 152 to be fixed to one of the actuators 146.
  • the actuators 146 drive the four plates 152 in rotation simultaneously.
  • trays 152 engage the carapace mold 101 at the upper heat shield 113 thereof, fragment the mold 101 into a large number of pieces, and thus separate a large part of the mold 101 of the blade cluster.
  • the different parts of the tooling can naturally be moved not simultaneously, but in any conceivable sequence, for example one after the other, or successively in diametrically opposed pairs, etc.
  • the movement of the trays 152 is a rotational movement, carried out in such a way that they do not come into contact with the cluster 130.
  • This rotational movement makes it possible to bring the ends of the fingers 162 of the tool 150 closer to the X axis of the carapace mold 101 (arrows on the Figure 7B ). With this, the fingers 162 pass between each pair of adjacent blades, and thus ensure that the shell mold 101 is fractured between all pairs of adjacent blades. By thus fragmenting the shell mold 101 in at least as many portions as there are blades 132, the tooling 150 thus ensures the unhinging of a very large portion of the shell mold 101.
  • Each cylinder 146 is controlled so that it moves the end of the plate 152 which it drives, that is to say the end of the finger 162, at a substantially constant speed, less than 0.2 m / s.
  • a machine or a stalling method according to the invention can be made according to many other embodiments than those presented above. Many possibilities exist as regards the arrangement of stall blades and the tooling that supports them, as regards the kinetics or the path of movement of the blade or blades.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Molds, Cores, And Manufacturing Methods Thereof (AREA)
  • Turbine Rotor Nozzle Sealing (AREA)
  • Perforating, Stamping-Out Or Severing By Means Other Than Cutting (AREA)
  • Moulds For Moulding Plastics Or The Like (AREA)

Claims (13)

  1. Verfahren zur Entformung einer Gruppe (30, 130) von Metallgussteilen (32, 132) aus einem verlorenen Modell, wobei die Gruppe von Teilen durch eine Formschale (1, 101) gebildet wird, wobei zumindest eine Klinge (64) mithilfe einer Maschine (40, 140) ohne Kontakt mit der Gruppe bewegt wird, auf solche Weise, dass die Klinge mit der Formschale in Eingriff gelangt, diese in eine Vielzahl von Bruchteilen zerbricht und zumindest einen Teil der Formschale von der Gruppe ablöst.
  2. Verfahren zur Entformung nach Anspruch 1, wobei die Bewegung der zumindest einen Klinge (64) zur Entformung der Gruppe von Teilen mit einer Geschwindigkeit von unter 0,2 m/s erfolgt.
  3. Verfahren zur Entformung nach Anspruch 1 oder 2, wobei die Bewegung der zumindest einen Klinge (64) zur Entformung der Gruppe von Teilen ausschließlich aus einer Verschiebungsbewegung oder ausschließlich aus einer Drehbewegung besteht.
  4. Verfahren zur Entformung nach einem der Ansprüche 1 bis 3, wobei die Bewegung der zumindest einen Klinge (64) einen Übergang zwischen jedem Paar von benachbarten Teilen unter den Teilen (32, 132) umfasst.
  5. Verfahren zur Entformung nach einem der Ansprüche 1 bis 4, wobei die zumindest eine Klinge aus einer Vielzahl von Klingen besteht, und während der Bewegung der Vielzahl von Klingen alle Klingen im Wesentlichen gleichzeitig mit der Formschale in Kontakt treten.
  6. Verfahren zur Herstellung von Gussteilen, umfassend die folgenden Schritte: Herstellen einer Gruppe (30, 130) von Gussteilen (32, 132) aus einem verlorenen Modell, wobei die Gruppe von Teilen in einer Formschale (1, 101) gebildet wird, anschließend Entfernen zumindest eines Teils der Formschale durch das Verfahren nach einem der Ansprüche 1 bis 5.
  7. Maschine zur Entformung (40, 140) der Gruppe (30, 130) von Gussteilen aus einem verlorenen Modell hergestellt werden, wobei die Gruppe von Teilen in einer Formschale (1, 101) gebildet wird, wobei die Maschine umfasst:
    einen Rahmen (42, 142) mit Mitteln (44) zur steifen Fixierung der Formschale auf dem Rahmen,
    zumindest eine Klinge (64),
    zumindest ein Stellglied (46, 146), das dazu geeignet ist, die zumindest eine Klinge in Bezug auf den Rahmen zu bewegen, in einem Raum, der zur Fixierung der Gruppe vorgesehen ist.
  8. Maschine zur Entformung (40, 140) der Gruppe (30, 130) von Teilen nach Anspruch 7, wobei deren zumindest eines Stellglied dazu geeignet ist, die zumindest eine Klinge in Bezug auf den Rahmen mit einer Geschwindigkeit von unter 0,2 m/s zu bewegen.
  9. Maschine zur Entformung (40, 140) der Gruppe (30, 130) von Teilen nach Anspruch 7 oder 8, wobei das zumindest eine Stellglied ein Stellglied umfasst, das dazu geeignet ist, zumindest eine Klinge zur Entformung der Gruppe von Teilen ausschließlich durch eine Verschiebungsbewegung oder ausschließlich durch eine Drehbewegung zu bewegen.
  10. Anordnung, umfassend eine Maschine zur Entformung (40, 140) nach einem der Ansprüche 7 bis 9, und eine Gruppe (30) von Gussteilen aus einem verlorenen Modell, wobei die Gruppe von Teilen in einer Formschale (1, 101) gebildet wird, wobei die Maschine zur Entformung dazu geeignet ist, die Fixierung der Gruppe auf dem Rahmen (42, 142) zu ermöglichen, und das zumindest eine Stellglied dazu geeignet ist, wenn die Gruppe auf dem Rahmen (42, 142) fixiert ist, die zumindest eine Klinge (64) in Bezug auf die Gruppe und ohne Kontakt mit der Gruppe (30, 130) auf solche Weise zu bewegen, dass die Klinge mit der Formschale in Eingriff gelangt, diese in eine Vielzahl von Bruchstücken zerbricht und zumindest einen Teil der Formschale von der Gruppe ablöst.
  11. Anordnung nach Anspruch 10, wobei in der Umgebung eines jeden Teils (32) der Gruppe (30, 130) die Formschale (1, 101) zumindest einen Vorsprung (13, 113) umfasst, mit dem die zumindest eine Klinge während der Bewegung in Eingriff gelangt.
  12. Anordnung nach Anspruch 11, wobei die Vorsprünge (13, 113) im Wesentlichen in einer Ebene angeordnet sind.
  13. Anordnung nach Anspruch 11 oder 12, wobei zumindest ein Teil der Vorsprünge (13, 113) um oder ausgehend von einem Teil (14) in Form eines durchlöcherten Plateaus gebildet ist.
EP16703566.6A 2015-01-27 2016-01-11 Ausschüttelverfahren und maschine für einen anguss von lost-pattern-gussstücken Active EP3250336B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR1550595A FR3031921B1 (fr) 2015-01-27 2015-01-27 Procede et machine de decochage pour grappe de pieces de fonderie a modele perdu
PCT/FR2016/050039 WO2016120538A1 (fr) 2015-01-27 2016-01-11 Procédé et machine de décochage pour grappe de pièces de fonderie à modèle perdu

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EP3250336A1 EP3250336A1 (de) 2017-12-06
EP3250336B1 true EP3250336B1 (de) 2019-03-06

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US (1) US10632531B2 (de)
EP (1) EP3250336B1 (de)
CN (1) CN107427910B (de)
FR (1) FR3031921B1 (de)
WO (1) WO2016120538A1 (de)

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FR3056994B1 (fr) * 2016-09-30 2021-01-22 Safran Four de cristallisation pour la production d'aubes de turboreacteur avec ecran thermique embarque
FR3062588B1 (fr) * 2017-02-06 2019-04-26 Safran Aircraft Engines Systeme de raccordement d'une sole de four a une embase de moule carapace pour la fabrication d'un element aubage
FR3089438B1 (fr) 2018-12-11 2020-12-25 Safran Barbotine de fonderie améliorée pour la fabrication de moules carapaces
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US20180178280A1 (en) 2018-06-28
US10632531B2 (en) 2020-04-28
WO2016120538A1 (fr) 2016-08-04
CN107427910B (zh) 2019-12-06
CN107427910A (zh) 2017-12-01
FR3031921B1 (fr) 2017-02-10
FR3031921A1 (fr) 2016-07-29
EP3250336A1 (de) 2017-12-06

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