EP1525933A2 - Procede et machine pour la production de composants en alliage metallique - Google Patents
Procede et machine pour la production de composants en alliage metallique Download PDFInfo
- Publication number
- EP1525933A2 EP1525933A2 EP04077922A EP04077922A EP1525933A2 EP 1525933 A2 EP1525933 A2 EP 1525933A2 EP 04077922 A EP04077922 A EP 04077922A EP 04077922 A EP04077922 A EP 04077922A EP 1525933 A2 EP1525933 A2 EP 1525933A2
- Authority
- EP
- European Patent Office
- Prior art keywords
- mold
- lower half
- piston
- metal alloy
- recovery
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Withdrawn
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Classifications
-
- 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
- B22D18/02—Pressure casting making use of mechanical pressure devices, e.g. cast-forging
Definitions
- the present invention relates to a method and a machine for the production of alloy components metallic.
- the invention relates to a process of type "direct squeeze casting” in which said components are produced by a casting process of the molten alloy in a mold reproducing the shape of said component and subsequent solidification of the alloy, which resorts to the exercise of a pressure continuous on said mold.
- the end caps for safety shoes made in aluminum or aluminum alloy, are an example of such components produced by the process of this invention.
- Other components that we can possibly realize are pan parts, aluminum window frame components, horseshoes, etc.
- Such tips must be made in such a way as to withstand a shock test with a force of 200 joules imposed by a known standard.
- the tip must have characteristics of robustness and homogeneity that does not can be obtained only with a production method very precise of it, in which matter introduced into the mold must be metered accurately.
- a subsequent problem with known methods is the distribution of the material in the mold during pressure process of the punch in the mold itself. Indeed, during the pressure, the material, in the hypothesis of an abundant dosage, would tend to leave the in the event of insufficient dosage, the product component would have defects homogeneity that could lead to failure in the resistance test referred to above.
- the Applicant has solved these problems by point a process and a machine for the realization of components made of aluminum or its alloys, in which the dosing phase of the material in the molds is produced simultaneously in at least two fingerprints of the mold, so as to obtain self-leveling.
- the method according to the present invention performs, during the pressure of the upper punch or half-mold, controlled recovery of at least a part of the molten material that tends to come out of the half-mold under the effect of said pressure, so as to to make a component having a quantity of alloy adequate and properly distributed.
- the machine includes in addition a compensation and recovery device material that may have flowed in excessive quantities into the lower mold half during the molding phase of the component.
- a further aspect of the present invention relates to a machine for producing by molding metal alloy components comprising a half-mold lower and an upper half-mold that one can mate with each other to form the model of at least one of said metal alloy components and a supply device of the molten alloy in said lower half-mold.
- Said lower mold half includes a pair of indentations identical to each other and communicating with each other by a central conduit, so that said feeding device fills both footprints in one casting.
- the machine for producing end caps for safety shoes and similar products made of aluminum, its alloys and light alloys in general comprises a lower half-mold 2 and a half-mold 3, which can be associated respectively to a lower press platen 4 and a upper press plate 5.
- a feed device for the molten metal including an anthropomorphic arm 6 that dumps the metal melt in the lower half-mold by a conduit of introduction made for that.
- Said upper press platen comprises a piston 7 whose lower end is supported by preferably on the upper half-mold.
- Said piston moves in a substantially vertical direction of way to push the upper half-mold inside of a cavity defined by said lower half-mold, so that, after the introduction of the molten metal, the coupling between the half-mold upper and the lower half-mold.
- the lower half-mold according to the present invention consists of at least two fingerprints 21 and 22 arranged symmetrically to each other so as to make at least one pair of tips at each casting of molten material. These two prints communicate between they in a central zone 23 of the mold, so that that the liquid metal spilled by said device in a footprint can also fill the symmetrical imprint passing through this area communication center 23. In this way, the level of in both footprints is found identical and by therefore the amount of material in both imprints is also substantially identical; this "Self-leveling" allows to make both ends in a very similar way for one and the other: it is fundamental since two tips produced simultaneously can equip the same pair of shoes.
- the machine according to the present invention comprises in in addition to a device for compensation and recovery of material that may have flowed in excessive quantities into the lower half mold.
- such a device includes a hydraulic circuit for the recovering molten metal comprising a piston of backpressure 81 whose movement is controlled from preferably by an oleodynamic circuit.
- This circuit oleodynamic is used to maintain pressure constant on the backpressure piston.
- the circuit oleodynamic comprises a chamber 82 in which is inserted said piston and which is filled with fluid so much below above the piston, which is placed in a intermediate position. The filling of this room is carried out via two conduits 83 and 84 and a feed pump 85. This pump is able to maintain pressure fluid constant in said chamber and therefore constant pressure on said back pressure piston.
- This hydraulic circuit for the recovery of metal melt further comprises a recovery conduit 86 connected at one of its ends to said piston 81 and associated at the end opposite a peripheral portion of the lower half mold. From this peripheral part 87 can overflow a quantity of molten metal during the molding operation.
- the process for the production of components in metal alloy according to the present invention is as follows.
- the first phase (illustrated in particular on the Figure 1) provides for the casting of the molten metal at the interior of the lower mold half using said supply circuit and in particular said arm anthropomorphic 6.
- the liquid at least partially fills the two footprints 21 and 22 arranged symmetrically one by relation to each other and the amount of molten metal spilled into a footprint is found substantially identical to the one in the other, since the communication 23 allows the passage between them of the liquid.
- the second phase (illustrated in particular on the Figure 2) provides for the closure of the mold by bringing the top press platter in contact with the platter lower press.
- the third phase (illustrated in particular on the Figure 3) provides for the descent of the upper half-mold 3 (punch) in the lower mold half 2 (die).
- this phase excess liquid can overflow of the mold under the effect of the pressure of the half-mold superior.
- this liquid excess is channeled inside the said conduit 86.
- a calibration of the excess liquid In particular, it turns out necessary to control the amount of liquid in excess that tends to overflow the half-mold lower and invade the recovery duct.
- the backpressure piston 81 exerts on the metal in melting or liquid in excess a predetermined pressure able to allow the overflow of a quantity pre-established of that one.
- Figures 4a and 4b show how the liquid that overflows the lower half mold, in the direction of the arrow F1, is routed inside the conduit 86.
- This thrust of the liquid tends to move the piston of backpressure 81 in the direction of the arrow F2.
- the movement resulting from this pressure however is limited by the fluid pressure inside the chamber 82 which allows the piston a limited movement and therefore only to a pre-established amount of molten metal to overflow the mold.
- By acting on the oleodynamic circuit can be determined the amount of molten metal that should be overflowed mold.
- the compensation device and recovery of the material having been able to flow in excessive quantities into the mold only include a metal recovery pipe melted in excess.
- the backpressure piston is arranged in the lower press platter, especially nearby of the central duct 26, so as to fulfill the function additional ejection of the ends of the half-mold lower once finished the molding phase.
- the backpressure piston in addition to the oleodynamic circuit which controls the thrust of the back pressure piston, provides for the presence of a pre-compressed spring which allows the movement up the piston once the Upper press platen was raised.
- the tips produced can undergo subsequent treatment, by a method of solubilization and quenching able to give them a more great robustness.
- Another work that can be done on bits relates to the realization on these of holes in pre-established locations in order to decrease the amount of alloy contained in a mouthpiece and for the purpose to ventilate the area of the shoe where the tip is himself. Of course we will not practice holes in areas of the tip that require greater crush resistance.
- the upper half-mold is shaped so that during the introduction of it into the lower mold half, in an intermediate position like that highlighted in Figure 2, the area middle of the upper half-mold is already in contact with the molten metal while the mold is not completely closed. This allows the molten metal to overflow partially from the mold to contribute to the calibration referred to by the backpressure piston or the recovery conduit.
- the type of alloy used to produce these tips is a composition that in itself confers characteristics of successfully passing the test of robustness mentioned above.
- An alloy that is suitable for making these tips, in addition to containing aluminum, contains 3.5 to 4% copper, silicon in a content of less than 0.1%, magnesium from 0.4 to 0.5%, titanium from 0.15 to 0.20% and about 0.16% iron.
- a tip made according to this method and using this alloy has successfully undergone the shock test referred to above.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Forging (AREA)
- Footwear And Its Accessory, Manufacturing Method And Apparatuses (AREA)
- Molds, Cores, And Manufacturing Methods Thereof (AREA)
- Moulds For Moulding Plastics Or The Like (AREA)
Abstract
Description
Claims (13)
- Procédé pour la production de composants en alliage métallique comprenant les phases consistant à :couler une quantité prédéterminée d'alliage métallique en fusion dans un demi-moule inférieur comprenant au moins une paire d'empreintes ayant la même forme, disposées symétriquement l'une par rapport à l'autre et reliées entre elles par un conduit central,déplacer un demi-moule supérieur en direction dudit demi-moule inférieur,récupérer une quantité prédéterminée d'alliage métallique en fusion débordant dudit demi-moule inférieur pendant la phase de fermeture du moule,fermer le demi-moule supérieur sur ledit demi-moule inférieur et mouler le composant,extraire du moule le composant réalisé.
- Procédé selon la revendication 1, dans lequel ladite phase de récupération comprend les étapes consistant à :canaliser ladite quantité prédéterminée d'alliage,exercer une contre-pression préétablie sur ledit conduit de manière à réguler ladite quantité d'alliage en fusion.
- Procédé selon la revendication 1, comprenant ultérieurement les étapes consistant à :solubiliser le composant moulé,tremper le composant moulé.
- Embout pour chaussure de sécurité, caractérisé en ce qu'il est réalisé dans un alliage d'aluminium comprenant de 3,5 à 4% de cuivre, du silicium dans une teneur inférieure à 0,1%, du magnésium de 0,4 à 0,5%, du titane de 0,15 à 0,20% et environ 0,16% de fer.
- Embout pour chaussure de sécurité selon la revendication 4, comprenant une pluralité de trous traversants réalisés en des endroits préétablis dudit embout.
- Machine pour la réalisation par moulage de composants en alliage métallique comprenant :caractérisée en ce queun demi-moule inférieur et un demi-moule supérieur que l'on peut accoupler l'un à l'autre de façon à former le modèle d'au moins un desdits composants en alliage métallique,un dispositif d'alimentation de l'alliage en fusion dans ledit demi-moule inférieur,
ledit demi-moule inférieur comprend au moins une paire d'empreintes identiques entre elles et communiquant l'une avec l'autre par un conduit central, de manière à ce que ledit dispositif d'alimentation remplisse les deux empreintes en une seule coulée. - Machine pour la réalisation par moulage de composants en alliage métallique comprenant :caractérisée en ce qu'elle comprend en outre un dispositif de compensation et récupération de la matière ayant pu couler en quantité excessive dans le demi-moule inférieur pendant la phase de moulage du composant.un demi-moule inférieur et un demi-moule supérieur que l'on peut accoupler l'un à l'autre de façon à former le modèle d'au moins un desdits composants en alliage métallique,un dispositif d'alimentation de l'alliage en fusion dans ledit demi-moule inférieur,
- Machine selon la revendication 7, dans laquelle ledit demi-moule inférieur comprend au moins une paire d'empreintes identiques entre elles et communiquant l'une avec l'autre par un conduit central, de manière à ce que ledit dispositif d'alimentation remplisse les deux empreintes en une seule coulée.
- Machine selon la revendication 7, dans laquelle ledit dispositif de compensation comprend un circuit hydraulique comprenant un piston de contre-pression et un conduit de récupération, relié à une de ses extrémités audit piston et associé à l'extrémité opposée à une partie périphérique dudit demi-moule inférieur.
- Machine selon la revendication 7, dans laquelle le mouvement dudit piston est contrôlé par un circuit oléodynamique.
- Machine selon la revendication 10, dans laquelle ledit circuit oléodynamique comprend une chambre dans laquelle est inséré ledit piston et qui est remplie d'un fluide tant au-dessous qu'au-dessus du piston par l'intermédiaire d'une paire de conduits d'alimentation et d'une pompe d'alimentation, ledit piston étant placé dans une position intermédiaire et cette pompe étant capable de maintenir une pression constante du fluide dans ladite chambre et une pression constante sur ledit piston.
- Machine selon la revendication 8, dans laquelle ledit piston de contre-pression est disposé dans le plateau de presse inférieur, à proximité du conduit central, et comporte un ressort pré-comprimé qui permet le mouvement vers le haut du piston une fois que le plateau de presse supérieur a été soulevé, de manière à remplir la fonction d'éjection des embouts du demi-moule inférieur une fois terminée la phase de moulage.
- Machine selon la revendication 7, dans laquelle ledit dispositif de compensation et de récupération comprend un conduit de récupération du métal fondu en excès.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| TN03104 | 2003-10-24 | ||
| TN03104 | 2003-10-24 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| EP1525933A2 true EP1525933A2 (fr) | 2005-04-27 |
| EP1525933A3 EP1525933A3 (fr) | 2006-01-18 |
Family
ID=34388829
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP04077922A Withdrawn EP1525933A3 (fr) | 2003-10-24 | 2004-10-25 | Procede et machine pour la production de composants en alliage metallique |
Country Status (4)
| Country | Link |
|---|---|
| US (1) | US20050167074A1 (fr) |
| EP (1) | EP1525933A3 (fr) |
| JP (1) | JP2005138183A (fr) |
| CA (1) | CA2485846A1 (fr) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| ITMI20111423A1 (it) * | 2011-07-28 | 2013-01-29 | Group S R L U | Macchina per la produzione di componenti in leghe metalliche |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR101803298B1 (ko) * | 2011-09-21 | 2017-11-30 | 스미토모 세이미츠 고교 가부시키가이샤 | 금속 충진 장치 |
| DE102016123491B4 (de) * | 2016-12-05 | 2019-12-24 | Schuler Pressen Gmbh | Gießvorrichtung, Presse und Verfahren zum Gießen eines Bauteils |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4049040A (en) * | 1975-08-07 | 1977-09-20 | N L Industries, Inc. | Squeeze casting apparatus and method |
| JPS59174260A (ja) * | 1983-03-18 | 1984-10-02 | Kubota Ltd | 鋳鉄鋳物の加圧鋳造方法 |
| IT1231211B (it) * | 1989-08-24 | 1991-11-23 | Tva Holding | Procedimento per la colata a pressione controllata di metalli fusi, particolarmente leghe leggere di alluminio e di magnesio, e apparecchiatura per la sua esecuzione |
| ITMI20010949A1 (it) * | 2001-05-09 | 2002-11-09 | Claudio Frulla | Apparecchiatura per la realizzazione di puntali per scarpe di sucurezza e simili in alluminio sue leghe e leghe leggere in genere nonche' pr |
| US20030056929A1 (en) * | 2001-09-24 | 2003-03-27 | Staley James T. | Die casting of wrought aluminum alloys |
| ITMI20020223A1 (it) * | 2002-02-07 | 2003-08-07 | Claudio Frulla | Apparecchiatura per la realizzazione di oggetti in alluminio leghe dialluminio leghe leggere e simili |
-
2004
- 2004-10-22 US US10/971,567 patent/US20050167074A1/en not_active Abandoned
- 2004-10-22 CA CA002485846A patent/CA2485846A1/fr not_active Abandoned
- 2004-10-25 JP JP2004309714A patent/JP2005138183A/ja active Pending
- 2004-10-25 EP EP04077922A patent/EP1525933A3/fr not_active Withdrawn
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| ITMI20111423A1 (it) * | 2011-07-28 | 2013-01-29 | Group S R L U | Macchina per la produzione di componenti in leghe metalliche |
Also Published As
| Publication number | Publication date |
|---|---|
| EP1525933A3 (fr) | 2006-01-18 |
| JP2005138183A (ja) | 2005-06-02 |
| CA2485846A1 (fr) | 2005-04-24 |
| US20050167074A1 (en) | 2005-08-04 |
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