EP0941789B1 - Procédé et installation de moulage de pièces en alliage léger - Google Patents
Procédé et installation de moulage de pièces en alliage léger Download PDFInfo
- Publication number
- EP0941789B1 EP0941789B1 EP99400547A EP99400547A EP0941789B1 EP 0941789 B1 EP0941789 B1 EP 0941789B1 EP 99400547 A EP99400547 A EP 99400547A EP 99400547 A EP99400547 A EP 99400547A EP 0941789 B1 EP0941789 B1 EP 0941789B1
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- EP
- European Patent Office
- Prior art keywords
- mould
- mold
- sand
- process according
- casting
- 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.)
- Revoked
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- 238000005266 casting Methods 0.000 title claims abstract description 18
- 238000000034 method Methods 0.000 title claims description 47
- 230000008569 process Effects 0.000 title claims description 40
- 229910001234 light alloy Inorganic materials 0.000 title claims description 7
- 238000009434 installation Methods 0.000 title description 6
- 239000004576 sand Substances 0.000 claims abstract description 51
- 238000007711 solidification Methods 0.000 claims abstract description 20
- 230000008023 solidification Effects 0.000 claims abstract description 20
- 230000005484 gravity Effects 0.000 claims abstract description 7
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims description 65
- 229910052751 metal Inorganic materials 0.000 claims description 17
- 239000002184 metal Substances 0.000 claims description 16
- 229910045601 alloy Inorganic materials 0.000 claims description 15
- 239000000956 alloy Substances 0.000 claims description 15
- 238000000465 moulding Methods 0.000 claims description 14
- 239000002245 particle Substances 0.000 claims description 9
- 229910000838 Al alloy Inorganic materials 0.000 claims description 7
- 239000000377 silicon dioxide Substances 0.000 claims description 7
- 238000002360 preparation method Methods 0.000 claims description 2
- 239000007787 solid Substances 0.000 claims 1
- 239000000463 material Substances 0.000 abstract description 2
- 230000000903 blocking effect Effects 0.000 abstract 1
- 238000007789 sealing Methods 0.000 description 11
- 238000004519 manufacturing process Methods 0.000 description 10
- 239000000126 substance Substances 0.000 description 9
- 238000007514 turning Methods 0.000 description 8
- 241001508691 Martes zibellina Species 0.000 description 7
- 238000001816 cooling Methods 0.000 description 6
- 229910001338 liquidmetal Inorganic materials 0.000 description 5
- 229910001018 Cast iron Inorganic materials 0.000 description 3
- 229910052782 aluminium Inorganic materials 0.000 description 3
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 3
- 238000004064 recycling Methods 0.000 description 3
- 238000013519 translation Methods 0.000 description 3
- 229910052845 zircon Inorganic materials 0.000 description 3
- GFQYVLUOOAAOGM-UHFFFAOYSA-N zirconium(iv) silicate Chemical compound [Zr+4].[O-][Si]([O-])([O-])[O-] GFQYVLUOOAAOGM-UHFFFAOYSA-N 0.000 description 3
- 230000009471 action Effects 0.000 description 2
- 230000008901 benefit Effects 0.000 description 2
- 239000000440 bentonite Substances 0.000 description 2
- 229910000278 bentonite Inorganic materials 0.000 description 2
- SVPXDRXYRYOSEX-UHFFFAOYSA-N bentoquatam Chemical compound O.O=[Si]=O.O=[Al]O[Al]=O SVPXDRXYRYOSEX-UHFFFAOYSA-N 0.000 description 2
- 238000004140 cleaning Methods 0.000 description 2
- 230000007547 defect Effects 0.000 description 2
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- 239000007788 liquid Substances 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
- 238000003032 molecular docking Methods 0.000 description 2
- 239000011347 resin Substances 0.000 description 2
- 229920005989 resin Polymers 0.000 description 2
- 238000000926 separation method Methods 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- 229910001208 Crucible steel Inorganic materials 0.000 description 1
- 229910004298 SiO 2 Inorganic materials 0.000 description 1
- 241001080024 Telles Species 0.000 description 1
- 238000010521 absorption reaction Methods 0.000 description 1
- 238000013459 approach Methods 0.000 description 1
- 230000001680 brushing effect Effects 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 230000000295 complement effect Effects 0.000 description 1
- 229910052802 copper Inorganic materials 0.000 description 1
- 230000002542 deteriorative effect Effects 0.000 description 1
- 229940082150 encore Drugs 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
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- 238000010438 heat treatment Methods 0.000 description 1
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- XEEYBQQBJWHFJM-UHFFFAOYSA-N iron Substances [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 238000005304 joining Methods 0.000 description 1
- 238000003754 machining Methods 0.000 description 1
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- 238000006116 polymerization reaction Methods 0.000 description 1
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Images
Classifications
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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
- B22D15/00—Casting using a mould or core of which a part significant to the process is of high thermal conductivity, e.g. chill casting; Moulds or accessories specially adapted therefor
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
- B22D18/00—Pressure casting; Vacuum casting
- B22D18/04—Low pressure casting, i.e. making use of pressures up to a few bars to fill the mould
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
- B22D33/00—Equipment for handling moulds
- B22D33/02—Turning or transposing moulds
Definitions
- the present invention relates to a new process production of alloy casting parts aluminum, as well as an installation for the work of this process.
- the quality of these parts relates so much to the aspects metallurgical (i.e. researching the most highest by a most foundry microstructure as fine and as healthy as possible in the areas requested) only on the dimensional aspects (in particular the maximum dimensional accuracy of all the room geometries that are critical for vehicle performance.
- the metal mold foundry processes essentially the gravity process and the process by low pressure are certainly economically efficient and deliver a high level of metallurgical quality and dimensional. They are however unsuitable for production of parts with complex shapes.
- the interior shapes are in this case produced by chemically bound sand cores, and these processes are only suitable if it is possible to insert all of these nuclei quickly after opening the mold and extracting the part previous.
- the present invention aims to overcome the limitations of the state of the art and to propose a foundry process which better responds to needs of the market and in particular of the automobile market, while remaining economical implementation.
- Another object of the present invention is to propose a foundry process using at least substantial part of the sand with physical setting, or sand green, not posing the particular problems of recycling and environment encountered with sands at chemical setting.
- the invention offers a mold intended for the casting of a piece in light alloy such as aluminum alloy, the mold being provided with a molten alloy supply channel under pressure, the mold being characterized in that it is rotatably mounted on an essentially horizontal axis of so that it can be returned after filling, and what it includes a mechanical sealing means supply channel.
- FIG. 1 we have shown a mold 10 whose imprints are formed by physically bound sand, i.e. not using no thermally or chemically cured resin, and preferably by sand to green.
- the sand with green has a cost per unit of weight which is ten to fifteen times lower than that of a box type chemical sand Cold.
- this type of sand does not pose the recycling and pollution problems posed so known by chemical setting sands.
- This sand is used in chassis, most of the mold, produced in the form of two half-molds 10a and 10b, consisting of two metal half-frames 17a, 17b, each half-chassis carrying a half-cavity 11a, 11b carried out by the usual technologies of production of green sand molds, using a model.
- each half-chassis Before closing the two half-frames, one on the other, each half-chassis is presented on a conveyor C in open position, indent side facing high, so as to facilitate remolding, that is to say the positioning of the different cores and inserts (together 13 primary and individual secondary nuclei 12) intended for obtaining interior shapes and certain external forms of the part to be produced, the example illustrated schematically here being that of a engine block.
- These cores can be handled by hand in the case of small cores 12, or even by robots operating in successive work stations (case of the main set of cores 13).
- These cores are preferably made of chemical setting sand (preferably of the cold box type or according to the “Isocet” type process.
- silica sand (SiO 2 ) with a particle size equal to approximately 55 is preferably used. -60 AFS or more, the best surface states being obtained with the highest AFS particle size values).
- nuclei 13 has in this example, besides different chemical sand nuclei 131 forming the desired geometry, metallic inserts 132 intended for form cylinder liners, as well as a block massive metallic cooling 16, as we will see further.
- This cooling block can be incorporated into the set of cores 13 during the production of the nuclei 131, so as to produce a joining between cores and cooler.
- the two half-chassis are assembled, the upper half-chassis, initially placed next to the lower half-chassis, imprint up, being turned 180 ° (see position of Figure 2a) to be assembled, with appropriate position indexing means, on the half-frame inferior.
- FIG. 2b illustrates the position of the mold 10 during the filling phase, the example always being that of molding of an engine block.
- Convenient filling at the bottom pressure is preferably achieved with the contacting of the sand mold 10 with a dip tube (not shown on Figure 2a) connected to a sealed oven type low oven pressure, classic in itself. After this docking, the metal rise and flow control are done by pressurization of the oven. Alternatively, use an electromagnetic pump.
- An advantageous characteristic of the process according to the invention is the use of a mechanical obturation of the feeding system at the end of filling and before turning the mold 180 °.
- Such a reversal has for the purpose of putting the flyweights 14 in the high position and achieve solidification under conditions identical to those of gravity feed.
- reversal must be performed no later than 15 seconds, preferably 5 seconds later, after shutter.
- the filling itself is performed the most as soon as possible after filling is complete not to waste time and not to be disturbed by a beginning of solidification in the supply duct.
- the obturation is carried out at the latest 10 seconds after completion of filling, without that exceeding this limit poses a risk for the health of the room.
- the sealing device allows the metal to remain in the mold, so that it contributes significantly entirely, to the process (increase in the volume of weights).
- obturation can be achieved by the actuation of a metal hatch placed in the sand mold, as will be described in detail later (guillotine system), or by any other solution mechanical performing this function.
- FIG. 2c illustrates the position of the mold 10 after 180 ° turning, the engine block produced being designated by BM.
- the arrows F2 indicate the direction of propagation main cooling, this cooling mostly done from the cooler massive 16 now located in the lower part.
- the method according to the invention puts advantageously in play one or more coolers placed opposite the weighting system and remoulded during the assembly sequences of the assembly principal of 13 nuclei in chemically bound sand.
- coolers are preferably consisting of masses of cast iron or a other material with absorption capacity adequate heat. These masses can if necessary be in shape, that is to say serve to achieve partially the geometry of the part.
- the coolers will preferably be monobloc. They can be placed in the core boxes used the production of chemically set and inserted cores in these at the time of their realization by spraying and polymerization of resin-coated sand in the core box.
- the part is then subjected to the usual cycles of cleaning (removal of sand), deburring, heat treatment, machining and control.
- FIGS 3a to 3e schematically illustrate the process of the invention, in which provision is made at the level passage 22 for supplying liquid metal, intended to be connected to the dip tube 20, sealing means, generally designated by the reference 30, which we will describe an example below.
- the sealing means 30 are open and the supply tube 20 is docked on the mold 10 by movement of the mold according to arrow F3 ( Figure 3a). More precisely, thanks to an opening 21 practiced in the mold frame, the tube feed 20 then comes into contact with the sand to physical grip of the mold. Filling by bass pressure is then carried out ( Figure 3b). Ways shutter are then used to isolate the mold cavity, once filled, of the system feed (arrow F4 in Figure 3c), then we separate the dip tube 20 of the mold 10 according to arrow F5 (figure 3d). Finally the turning by rotation around a horizontal axis A is produced according to F6 in Figure 3e).
- Figures 4a to 4d and Figure 5 illustrate a example of concrete implementation of the sealing means 30.
- These include a metal plate 31, for example example in cast iron or steel, with a thickness of the order from 2 to 5 mm, inserted in one (here 11b) of the two footprints in sand to green of the mold during the realization thereof so as to be at the right of the metal supply channel 22.
- the plate 31 At its free end facing the channel 22, the plate 31 has two lateral appendages 31a intended to allow a easy positioning of the plate 31 during the realization of the half-mold 11b, as well as to facilitate guiding the plate during its movement to shutter position.
- the opposite imprint 11a has two substantially complementary cavities 33 in which said appendages can come engage when assembling the two half-chassis.
- Figure 4a illustrates the making of the imprint 11b with a PM model plate, the imprint including the cover plate 31 and the two overhanging appendages 31a.
- FIG. 4b illustrates the assembly of the two half-chassis, the ends of the appendages 31a, 31a engaging in the cavities 33 of the opposite impression.
- FIG. 4c illustrates a cavity 34 formed in the imprint 11b and intended to receive the rod 216 and the head 216a of a jack intended to act on the plate 31 for close the channel 22 before closing.
- the bottom of this cavity ends a short distance from the edge of the plate 31 opposite the channel.
- Figure 4d illustrates the situation after the jack, via the rod 216 and its head 216a, pressed plate 31, after having driven out locally sand to green, to achieve the filling.
- Figures 6a to 6c give an example of a mold handling EQ equipment which includes a main frame 100 comprising a frame part mobile 106 mounted on a base plate by through a tree 104 so that we can rotate around a vertical axis B under the action of a motor, like a carousel.
- a secondary frame 200 intended to receive a mold 10 and to move it as we will see it later.
- This secondary frame has a 202 mounted frame pivoting, for example on a toothed wheel 108, the rotation about the horizontal axis A is controlled by a suitable motor (not shown).
- the mold 10 is mounted in this frame 202 with its feed channel 22 facing outward, and is held in place between a stressed pressure plate 204 by a jack 208 and a counter plate 210. Rollers of guide 206, 212 defining supports according to different directions allow the mold to be guided and wedged 10 in position in the equipment.
- Figures 7a and 7b show the same equipment in side elevation, with the oven 300 fitted with its tube supply 20.
- the secondary frame 200 is mounted via slides 110 on guide rails 220 integral with the main frame 106, to be able to slide, when the mold 10 is located with its supply channel 22 facing to the feed tube 20, in approach and at distance from this tube, under the action of a jack (not represented).
- FIGS 8a to 8c illustrate for above the equipment described above, in cooperation with the conveyor C on which the molds are assembled, the low pressure oven 300 and a conveyor C 'for the start products after pouring and turning, to the cooling station.
- the EQ equipment then rotates 90 ° around the vertical axis B, so that the mold 10 is facing the oven, and, simultaneously or dissociated, the mold is rotated 90 ° to adopt its position vertical molding ( Figures 6b and 8b).
- the mold 10 is then moved in translation towards the oven 300 for bringing the supply tube 20 into waterproof communication with its supply channel 22 ( Figure 7a), and the low pressure casting is performed.
- the channel 22 is closed and the pressure of the furnace 300 is released so as to bring the metal at a lower level than the tube feed 20, then the mold 10 is separated from the tube supply 20 and returned 180 ° around the axis horizontal A as described above ( Figure 6c and 7b).
- the frame 200 is rotated 90 ° around the vertical axis B to bring the mold 10 facing an outlet conveyor C '(figure 8c) directing the mold to a cooling station.
- a 4-cylinder in-line engine block weighing 18 kg is produced according to the low-pressure supply system shown in FIG. 2, but without coolers and with green sand of the zircon type with a particle size 113 AFS and of the following composition (in percentages by mass): bentonite 1.8%, water 1.5% the rest being zircon sand.
- Interior and end cores are made with setting sand chemical.
- the alloy used for casting has the following composition (in mass percentages): Yes 8.6% Cu 2.2% mg 0.3% Fe 0.4% mn 0.3% the rest being aluminum.
- the temperature of the metal at the time of casting is 720 ° C.
- Filling is carried out at low pressure and lasts 15 seconds.
- the supply system is blocked performed 2 seconds after filling is completed.
- the 180 ° turnaround is performed 30 seconds after filling.
- the same engine block is made with a mold sand to siliceous green with a particle size of 55-65 AFS with the same bentonite and water concentrations as in example 1.
- the inner cores and ends are made of chemical setting sand as in Example 1.
- a cast iron cooler 16 is placed as shown in figure 2.
- the conditions of pouring and filling are identical to those of Example 1.
- the obturation is carried out 2 seconds after the end of filling.
- 180 ° flipping begins a second after the shutter lasts 4 seconds. During this phase of reversal, it is advantageous to carry out the depressurization of the low pressure oven which is used to bring the liquid metal in the mold.
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Molds, Cores, And Manufacturing Methods Thereof (AREA)
- Manufacture Of Alloys Or Alloy Compounds (AREA)
- Cylinder Crankcases Of Internal Combustion Engines (AREA)
- Forging (AREA)
- Powder Metallurgy (AREA)
- Mold Materials And Core Materials (AREA)
- Casting Devices For Molds (AREA)
- Dental Prosthetics (AREA)
- Refinement Of Pig-Iron, Manufacture Of Cast Iron, And Steel Manufacture Other Than In Revolving Furnaces (AREA)
Description
- préparer un moule avec empreinte en sable à prise physique,
- incorporer au moule un moyen d'obturation déplaçable au voisinage d'un conduit d'alimentation du moule,
- placer le moule de telle sorte que son conduit d'alimentation se trouve en partie inférieure,
- connecter le conduit d'alimentation du moule à un tube d'alimentation en alliage en fusion mis en pression,
- effectuer le remplissage du moule avec ledit alliage,
- avant toute solidification substantielle de la pièce, déplacer le moyen d'obturation pour obturer le conduit d'alimentation, puis retourner le moule à environ 180° pour assurer une solidification en mode gravité.
- il est prévu en outre, entre les étapes de remplissage et de solidification, une étape d'obturation de ladite région inférieure du moule suivie d'une séparation entre un tube d'alimentation en alliage en fusion et le moule.
- l'étape d'obturation est achevée moins de dix secondes environ après la fin de l'étape de remplissage.
- l'étape de retournement est achevée au plus tard 25 secondes, de préférence 15 secondes, après la fin de l'obturation.
- l'étape de retournement est achevée au plus tard 15 secondes , de préférence 5 secondes, après la fin de l'obturation.
- l'on utilise un moule en sable siliceux d'une granulométrie au moins égale à 40 AFS, de préférence au moins égale à 55 AFS ou encore 80 AFS pour l'obtention d'états de surface excellents.
- on utilise un moule à deux demi-châssis, et l'étape de préparation du moule comprend les phases consistant à mouler deux demi-empreintes dans les cieux demi-châssis, à positionner des noyaux de moulage dans les deux demi-châssis disposés avec leur demi-empreinte sur le dessus, et à assembler les deux demi-châssis.
- l'étape d'assemblage des deux demi-châssis aboutit à un moule en position généralement horizontale, et le procédé comprend en outre l'étape consistant à faire basculer le moule jusqu'à une position de remplissage généralement verticale.
- les noyaux sont réalisés en sable à prise chimique.
- les noyaux sont réalisés en sable siliceux d'une granulométrie au moins égale à 40 AFS.
- il est prévu en outre, après solidification de la pièce, une étape de séparation de la pièce et du moule permettant de récupérer séparément le sable d'empreinte et le sable de noyaux.
- il est prévu en outre, avant l'étape de remplissage du moule, une étape de positionnement d'au moins un refroidisseur massif placé à dans une région du moule distante de ladite région d'alimentation du moule, et après la solidification, une étape de récupération du ou des refroidisseurs.
- un moule apte à être retourné par rotation autour d'un axe essentiellement horizontal, possédant un chenal d'alimentation en alliage fondu et incorporant un moyen d'obturation dudit chenal, et
- un dispositif de manutention de moule apte à déplacer le moule par rotation autour dudit axe horizontal et possédant un moyen d'actionnement dudit moyen d'obturation.
- le dispositif de manutention possède des moyens pour déplacer le moule en translation en direction d'un tube d'alimentation en alliage fondu.
- le dispositif de manutention est également apte à déplacer le moule par rotation autour dudit axe horizontal entre une position initiale en sortie d'une station d'assemblage de moule et une position de moulage.
- le dispositif de manutention est apte à déplacer le moule autour d'un axe vertical pour coopérer respectivement avec un convoyeur d'arrivée du moule, un four de coulée en basse pression muni dudit tube d'alimentation et un convoyeur de départ du moule.
- le moule possède au moins une empreinte en sable à prise physique, et ledit moyen d'obturation mécanique comprend une plaque métallique incorporée dans l'empreinte et guidée directement par celle-ci.
- le moule comprend un évidement borgne se terminant au droit d'un bord de ladite plaque métallique et apte à recevoir une tige d'un moyen d'actionnement de ladite plaque.
- ladite plaque possède au moins un appendice de guidage qui, dans une position initiale de ladite plaque, pénètre dans une empreinte opposée du moule.
- en premier lieu, le moule est assemblé sur le convoyeur C, comme décrit plus haut, et se trouve en position horizontale face à l'équipement de manutention EQ, dans lequel il est chargé, le bâti secondaire 200 étant préalablement tourné vers le convoyeur avec l'orientation requise (figures 6a et 8a).
| bentonite | 1,8 %, |
| eau | 1,5 % |
| le reste étant du sable zircon. |
| Si | 8,6 % |
| Cu | 2,2 % |
| Mg | 0,3 % |
| Fe | 0,4 % |
| Mn | 0,3 % |
| le reste étant de l'aluminium. |
Claims (20)
- Procédé de moulage d'une pièce en alliage léger tel qu'un alliage d'aluminium, caractérisé en ce qu'il comprend les étapes successives consistant à :préparer un moule (10) avec empreinte (11a, 11b) en sable à prise physique,incorporer au moule un moyen d'obturation déplaçable (31) au voisinage d'un conduit d'alimentation (22) du moule,placer le moule de telle sorte que son conduit d'alimentation se trouve en partie inférieure,connecter le conduit d'alimentation du moule à un tube d'alimentation (20) en alliage en fusion mis en pression,effectuer le remplissage du moule avec ledit alliage,avant toute solidification substantielle de la pièce, déplacer le moyen d'obturation (31) pour obturer le conduit d'alimentation, puis retourner le moule à environ 180° pour assurer une solidification en mode gravité.
- Procédé selon la revendication 1, caractérisé en ce que l'étape d'obturation est achevée moins de dix secondes environ après la fin de l'étape de remplissage.
- Procédé selon l'une des revendications 1 et 2, caractérisé en ce que l'étape de retournement est achevée au plus tard 25 secondes après la fin de l'obturation.
- Procédé selon la revendication 3, caractérisé en ce que l'étape de retournement est achevée au plus tard 15 secondes après la fin de l'obturation.
- Procédé selon l'une des revendications 1 à 4, caractérisé en ce que l'on utilise un moule en sable siliceux d'une granulométrie comprise entre environ 40 et environ 55 AFS.
- Procédé selon la revendication 5, caractérisé en ce que l'on utilise un moule en sable siliceux d'une granulométrie au moins égale à 80 AFS.
- Procédé selon l'une des revendications 1 à 6, caractérisé en ce que l'on utilise un moule à deux demi-châssis (10a, 10b), et en ce que l'étape de préparation du moule comprend les phases consistant à mouler deux demi-empreintes dans les deux demi-châssis, à positionner des noyaux de moulage (12, 13) dans les deux demi-châssis disposés avec leur demi-empreinte sur le dessus, et à assembler les deux demi-châssis.
- Procédé selon la revendication 7, caractérisé en ce que l'étape d'assemblage des deux demi-châssis aboutit à un moule en position généralement horizontale, et en ce qu'il comprend en outre l'étape consistant à faire basculer le moule jusqu'à une position de remplissage généralement verticale.
- Procédé selon l'une des revendications 7 et 8, caractérisé en ce que les noyaux (12, 13) sont réalisés en sable à prise chimique.
- Procédé selon la revendication 9, caractérisé en ce que les noyaux sont réalisés en sable siliceux d'une granulométrie au moins égale à 40 AFS.
- Procédé selon l'une des revendications 8 à 10, caractérisé en ce qu'il comprend, après solidification de la pièce, une étape de séparation de la pièce et du moule permettant de récupérer séparément le sable d'empreinte et le sable de noyaux.
- Procédé selon l'une des revendications 1 à 11, caractérisé en ce qu'il comprend en outre, avant l'étape de remplissage du moule, une étape de positionnement d'au moins un refroidisseur massif (16) placé à dans une région du moule distante de ladite région d'alimentation du moule, et après la solidification, une étape de récupération du ou des refroidisseurs.
- Installation pour le moulage d'une pièce en alliage léger tel qu'un alliage d'aluminium, caractérisée en ce qu'elle comprend :un moule (10) apte à être retourné par rotation autour d'un axe essentiellement horizontal, possédant un chenal (22) d'alimentation en alliage fondu et incorporant un moyen (31) d'obturation dudit chenal, etun dispositif (EQ) de manutention de moule apte à déplacer le moule par rotation autour dudit axe horizontal et possédant un moyen (214, 216) d'actionnement dudit moyen d'obturation.
- Installation selon la revendication 13, caractérisé en ce que le dispositif de manutention (EQ) possède des moyens pour déplacer le moule en translation en direction d'un tube (20) d'alimentation en alliage fondu.
- Installation selon l'une des revendications 13 à 14, caractérisée en ce que le dispositif de manutention est également apte à déplacer le moule par rotation autour dudit axe horizontal entre une position initiale en sortie d'une station d'assemblage de moule et une position de moulage.
- Installation selon l'une des revendications 13 à 15, caractérisée en ce que le dispositif de manutention est apte à déplacer le moule autour d'un axe vertical pour coopérer respectivement avec un convoyeur (C) d'arrivée du moule, un four de coulée en basse pression (300) muni dudit tube d'alimentation (20) et un convoyeur (C') de départ du moule.
- Moule (10) destiné à la coulée d'une pièce en alliage léger tel qu'un alliage d'aluminium, le moule étant pourvu d'un chenal (22) d'alimentation en alliage fondu sous pression, le moule étant caractérisé en ce qu'il est monté à rotation sur un axe (A) essentiellement horizontal de manière à pouvoir être retourné après remplissage, et en ce qu'il comprend un moyen (30, 31) d'obturation mécanique dudit chenal d'alimentation.
- Moule selon la revendication 17, caractérisé en ce qu'il possède au moins une empreinte (11b) en sable à prise physique, et en ce que ledit moyen d'obturation mécanique comprend une plaque métallique (31) incorporée dans l'empreinte et guidée directement par celle-ci.
- Moule selon la revendication 18, caractérisé en ce qu'il comprend un évidement borgne (34) se terminant au droit d'un bord de ladite plaque métallique et apte à recevoir une tige (216) d'un moyen d'actionnement de ladite plaque.
- Moule selon l'une des revendications 18 et 19, caractérisé en ce que ladite plaque (31) possède au moins un appendice de guidage (31a) qui, dans une position initiale de ladite plaque, pénètre dans une empreinte opposée (11a) du moule.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FR9803028 | 1998-03-10 | ||
| FR9803028A FR2775917B1 (fr) | 1998-03-10 | 1998-03-10 | Procede de moulage en grande serie de pieces d'alliage d'aluminium et equipements associes |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| EP0941789A1 EP0941789A1 (fr) | 1999-09-15 |
| EP0941789B1 true EP0941789B1 (fr) | 2003-05-28 |
Family
ID=9523953
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP99400547A Revoked EP0941789B1 (fr) | 1998-03-10 | 1999-03-08 | Procédé et installation de moulage de pièces en alliage léger |
Country Status (10)
| Country | Link |
|---|---|
| US (1) | US6540007B2 (fr) |
| EP (1) | EP0941789B1 (fr) |
| JP (1) | JPH11320071A (fr) |
| AT (1) | ATE241441T1 (fr) |
| BR (1) | BR9904551A (fr) |
| CA (1) | CA2265231C (fr) |
| DE (1) | DE69908212T2 (fr) |
| FR (1) | FR2775917B1 (fr) |
| HU (1) | HU221249B1 (fr) |
| PL (1) | PL189660B1 (fr) |
Families Citing this family (19)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20020060715A (ko) | 1999-10-15 | 2002-07-18 | 로라멘디, 에스.아. | 생형 금속주조법 및 주조거터 밀봉장치 |
| DE10019309C2 (de) * | 2000-04-19 | 2002-04-18 | Vaw Mandl & Berger Gmbh Linz | Verfahren und Vorrichtung zum Rotationsgießen |
| FR2814096B1 (fr) * | 2000-09-15 | 2002-12-27 | Montupet Sa | Procede de fabrication de pieces de fonderie munies d'inserts avec cohesion mecanique piece/insert amelioree, et insert utilisable dans un tel procede |
| US20050121165A1 (en) * | 2002-07-25 | 2005-06-09 | Pacifica Group Technologies Pty Ltd | Method and apparatus for casting |
| EP1498197B1 (fr) * | 2003-07-18 | 2017-11-22 | MAN Truck & Bus AG | Procédé de coulée de bloc moteur à combustion à pistons alternatifs |
| US6929053B1 (en) | 2004-05-26 | 2005-08-16 | General Motors Corporation | Mold fill method and system |
| DE102004043444B3 (de) * | 2004-09-06 | 2006-06-14 | Hydro Aluminium Alucast Gmbh | Verfahren und Vorrichtung zum Gießen von Metallschmelze |
| DE102006058142B4 (de) * | 2006-12-09 | 2016-09-01 | Volkswagen Ag | Verfahren und Vorrichtung zum Kippgießen von Bauteilen aus Leichtmetall |
| DE102006058145A1 (de) * | 2006-12-09 | 2008-06-12 | Ksm Castings Gmbh | Verfahren zum Verarbeiten, insbesondere Gießen, eines Materials, Gießform zur Durchführung des Verfahrens und nach dem Verfahren bzw. in der Gießform hergestellte Gegenstände |
| DE102008015856A1 (de) * | 2008-03-27 | 2009-10-01 | Volkswagen Ag | Verfahren und Vorrichtung zum Gießen von Bauteilen aus Leichtmetall |
| BRPI0921178B1 (pt) * | 2008-11-24 | 2019-06-18 | Nemak Dillingen Gmbh | Método para fundir uma peça a partir de um banho metálico |
| WO2010078201A1 (fr) | 2008-12-31 | 2010-07-08 | Tenedora Nemak, S.A. De C.V. | Moulage en sable basse pression d'éléments de moteur à cylindres en alliage d'aluminium |
| DE102010023644A1 (de) * | 2009-07-01 | 2011-01-05 | Ksm Castings Gmbh | Verfahren zum Gießen eines Materials, Verwendung des Verfahrens, Gießform zur Durchführung des Verfahrens und nach dem Verfahren bzw. in der Gießform hergestellte Gegenstände sowie Kern zum Einlegen in eine solche Gießform |
| CN102009125B (zh) * | 2010-06-28 | 2012-10-03 | 芜湖新兴铸管有限责任公司 | 一种大口径球铁管芯盒半模 |
| DE202016100133U1 (de) * | 2016-01-13 | 2017-04-19 | Kurtz Gmbh | Vorrichtung zum Gießen |
| CN116921623A (zh) * | 2023-06-27 | 2023-10-24 | 共享铸钢有限公司 | 一种缸体铸件的成型方法 |
| CN117103420A (zh) * | 2023-10-11 | 2023-11-24 | 南京福翊铭环保新材料有限公司 | 一种环保砖制坯设备 |
| CN118357450B (zh) * | 2024-06-19 | 2024-08-23 | 江苏华杰不锈钢制品有限公司 | 一种不锈钢板铸造装置 |
| CN119525427B (zh) * | 2025-01-22 | 2025-04-25 | 四川简阳海特有限公司 | 一种用于消失模涂料的流涂装置 |
Family Cites Families (23)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR715226A (fr) * | 1931-03-04 | 1931-11-27 | Ver Aluminiumwerke A G | Procédé et moule pour la confection de lingots à structure finement granulée, sans pores ni retassures |
| FR1317810A (fr) | 1962-04-06 | 1963-05-08 | ||
| FR1424986A (fr) * | 1964-03-06 | 1966-01-14 | Alusuisse | Procédé et dispositif de coulée sous pression |
| CH415972A (de) * | 1964-03-06 | 1966-06-30 | Alusuisse | Druckgiessverfahren und Einrichtung zur Durchführung des Verfahrens |
| FR1560465A (fr) | 1968-01-17 | 1969-03-21 | ||
| US3905419A (en) | 1970-09-29 | 1975-09-16 | Gravicast Patent Gmbh | Device for rise casting into a mold |
| DE2056243A1 (en) | 1970-11-16 | 1972-05-18 | Heinrich Wagner, Maschinenfabrik, 5928 Laasphe | Bottom feeding casting plant - with melt level statically adjusted |
| GB1410770A (en) | 1971-12-03 | 1975-10-22 | Dimo Holdings | Methods and apparatus for casting metal |
| FR2177466B1 (fr) | 1972-02-07 | 1974-08-30 | Alsacienne Atom | |
| GB1542857A (en) | 1975-11-21 | 1979-03-28 | Workman J | Moulding apparatus |
| DE2747320B2 (de) | 1977-10-21 | 1979-08-30 | Heinrich Wagner Maschinenfabrik, 5928 Laasphe | Verfahren und Vorrichtung zum Transport von Formkasten in automatischen Formanlagen |
| FR2559407B1 (fr) | 1984-02-15 | 1986-09-05 | Pont A Mousson | Procede de moulage en fonderie et moule pour la coulee de precision sous basse pression, avec modele gazeifiable et moule en sable sans liant |
| GB8604385D0 (en) * | 1986-02-21 | 1986-03-26 | Cosworth Res & Dev Ltd | Casting |
| DE3706929A1 (de) | 1987-03-04 | 1988-09-15 | Bruehl Eisenwerk | Verfahren zum giessen von metallformstuecken und vorrichtung zur durchfuehrung des verfahrens |
| GB2225970A (en) * | 1988-07-04 | 1990-06-20 | Collins Motor Corp Ltd | Low pressure casting of metal |
| JP2640761B2 (ja) * | 1988-08-02 | 1997-08-13 | 株式会社リケン | 成型鋳型移載装置 |
| WO1991012104A1 (fr) | 1990-02-16 | 1991-08-22 | Combustion Engineering, Inc. | Methode de moulage a coulee verticale |
| DK0615476T3 (da) | 1991-12-07 | 1999-10-25 | Alloy Techn Ltd | Støbning af letmetallegeringer |
| US5163500A (en) * | 1991-12-13 | 1992-11-17 | Ford Motor Company | Rollover method for metal casting |
| EP0599768B1 (fr) * | 1992-11-20 | 1998-05-13 | Agustin Arana Erana | Dispositif d'alimentation de métal sans basse pression d'un moule et sable borgne, moule et installation de coules correspondants |
| RU2127172C1 (ru) | 1994-05-27 | 1999-03-10 | Георг Фишер Диса А/С | Способ закрытия входа в литейную форму после неграфитационного литья нежелезного сплава в сырые литейные формы рядной устанвоки (варианты) |
| JP3147285B2 (ja) | 1995-07-07 | 2001-03-19 | 新東工業株式会社 | 低圧鋳造設備 |
| DE29708575U1 (de) | 1997-05-14 | 1997-07-31 | Heinrich Wagner Sinto Maschinenfabrik Gmbh, 57334 Bad Laasphe | Vorrichtung zum steigenden Gießen in Gießformen |
-
1998
- 1998-03-10 FR FR9803028A patent/FR2775917B1/fr not_active Expired - Fee Related
-
1999
- 1999-03-08 DE DE69908212T patent/DE69908212T2/de not_active Expired - Lifetime
- 1999-03-08 EP EP99400547A patent/EP0941789B1/fr not_active Revoked
- 1999-03-08 AT AT99400547T patent/ATE241441T1/de not_active IP Right Cessation
- 1999-03-09 CA CA002265231A patent/CA2265231C/fr not_active Expired - Fee Related
- 1999-03-10 JP JP11063954A patent/JPH11320071A/ja active Pending
- 1999-03-10 BR BR9904551-6A patent/BR9904551A/pt not_active IP Right Cessation
- 1999-03-10 US US09/265,605 patent/US6540007B2/en not_active Expired - Fee Related
- 1999-03-10 HU HU9900591A patent/HU221249B1/hu not_active IP Right Cessation
- 1999-03-10 PL PL99331874A patent/PL189660B1/pl not_active IP Right Cessation
Also Published As
| Publication number | Publication date |
|---|---|
| PL331874A1 (en) | 1999-09-13 |
| DE69908212D1 (de) | 2003-07-03 |
| EP0941789A1 (fr) | 1999-09-15 |
| DE69908212T2 (de) | 2004-04-08 |
| ATE241441T1 (de) | 2003-06-15 |
| US20010050156A1 (en) | 2001-12-13 |
| HU221249B1 (en) | 2002-09-28 |
| HU9900591D0 (en) | 1999-05-28 |
| BR9904551A (pt) | 2001-10-09 |
| FR2775917A1 (fr) | 1999-09-17 |
| PL189660B1 (pl) | 2005-09-30 |
| HUP9900591A2 (hu) | 1999-11-29 |
| FR2775917B1 (fr) | 2000-06-02 |
| US6540007B2 (en) | 2003-04-01 |
| CA2265231C (fr) | 2009-01-27 |
| CA2265231A1 (fr) | 1999-09-10 |
| JPH11320071A (ja) | 1999-11-24 |
| HUP9900591A3 (en) | 2000-05-29 |
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