EP0470021A1 - Method for realization of castings of aluminium or its alloys with integrated runners - Google Patents

Method for realization of castings of aluminium or its alloys with integrated runners Download PDF

Info

Publication number
EP0470021A1
EP0470021A1 EP91420284A EP91420284A EP0470021A1 EP 0470021 A1 EP0470021 A1 EP 0470021A1 EP 91420284 A EP91420284 A EP 91420284A EP 91420284 A EP91420284 A EP 91420284A EP 0470021 A1 EP0470021 A1 EP 0470021A1
Authority
EP
European Patent Office
Prior art keywords
tube
mold
casting
alloys
tubes
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
EP91420284A
Other languages
German (de)
French (fr)
Other versions
EP0470021B1 (en
Inventor
Eric Darsy
Philippe Meyer
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.)
Montupet SA
Original Assignee
Montupet SA
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 Montupet SA filed Critical Montupet SA
Publication of EP0470021A1 publication Critical patent/EP0470021A1/en
Application granted granted Critical
Publication of EP0470021B1 publication Critical patent/EP0470021B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Images

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
    • B22D19/00—Casting in, on, or around objects which form part of the product
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
    • B22D19/00—Casting in, on, or around objects which form part of the product
    • B22D19/0072—Casting in, on, or around objects which form part of the product for making objects with integrated channels
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02F—CYLINDERS, PISTONS OR CASINGS, FOR COMBUSTION ENGINES; ARRANGEMENTS OF SEALINGS IN COMBUSTION ENGINES
    • F02F1/00—Cylinders; Cylinder heads 
    • F02F1/24—Cylinder heads

Definitions

  • the invention relates to a method for producing parts molded from A1 or its alloys comprising integrated channels for the distribution of a lubricant or the circulation of a heat transfer fluid.
  • One (or more) main tube (s) made of aluminum or one of its alloys previously shaped (s) and possibly fitted with one or more several nozzles are (are) placed in the mold, in a determined position, the open ends of the tubes being able to correspond with the outside of the mold, either through the latter or through cores; closed ends can be embedded in the room.
  • the alloy of the part is then poured into the mold cavity after closing it, to drown the tube or tube system.
  • the alloy constituting the tubes and their thicknesses are determined so as to avoid any local fusions during filling of the mold with the liquid alloy.
  • the use of an A5 tube (AFNOR-NF-57702 standard) with a thickness greater than or equal to 1 mm is recommended.
  • the bending radii of the tubes must not cause excessively thinning in the stretched fiber of the elbows, incompatible with the strength of the tube at the time of filling; preferably the bending radius is greater than or equal to 3 times the external diameter of the tubes.
  • the penetration depth of a tapping into the main tube is of the order of 1 mm relative to its internal surface. This positioning is fixed by the position of the collar in case a) or by external longitudinal grooving by pushing back the end of the adjustment in case b). In the latter case, the extra thicknesses obtained on the diameter then ensure lateral tightening and the end beads of the grooves ensure the axial positioning of the fitting on the tube.
  • the positioning of the tube (or of the tube system) in the mold ensures its centering with respect to its reference position, offers the possibility of axial expansion of the tubes and their rotation blocking.
  • the positioning of the tube (or of the tube system) in the mold is for example carried out by a 90 ° elbow, external to the useful part of the molded part and inserted in a core adjacent to the mold with a clearance of the order of 1 to 2 mm, for an overall length of approximately 50 cm.
  • the other end of the tube is inserted into a cylindrical housing core allowing free axial expansion of the tube but also ensuring perfect centering of the tube system in the mold.
  • the mold itself is made either of sand, or of metal, or mixed, under the usual conditions for the casting of aluminum alloys.
  • the alloys usually used are AS7G or AS5U3G in states Y20,23 or Y30.33 according to the AFNOR standard NF-A-57702.
  • the center-to-center dimensions of the taps will be corrected, with respect to the desired dimensions, by a coefficient taking into account the deformations of the main tube during casting and the solidification of the part: namely elongation under the effect of the heat of the liquid metal and shrinkage when the part solidifies.
  • the casting temperature of the part is the lowest temperature allowing the good coming of the part and the non-melting of the tube.
  • the casting temperature is less than or equal to 760 ° C and preferably between 720 ° C and 740 ° C.
  • the usual internal diameters of the tubes used are generally between 3 and 15 mm.
  • the alloys of the tube or tube system and of the casting so that the melting temperature of the alloy of the molded part is less than or equal to that of the metal (or alloy) constituting the tubes ( or tube system).
  • the contact time between the tube system and the molten metal must be less than 10 seconds, and preferably 5 seconds.
  • the tube (or tube system) can also be cooled during the casting operation by the circulation of a cooling fluid, such as compressed air or liquid nitrogen vapor. .
  • a cooling fluid such as compressed air or liquid nitrogen vapor.
  • FIGS. 1 to 3 reproducing the conditions for casting a part of the cylinder head.
  • Figure 1 shows a sectional view of a tube and its tappings in place in a casting mold, in elevation (1A) along line II-II of fig.1B and in plan (1B) along line II of fig. 1A.
  • Figure 2 shows in section the detail of the junction of a tapping on the main tube using a shaped and glued collar (fig.2A to 2D) at different stages of shaping.
  • FIG. 3 represents the detail of the junction of a nozzle on the main tube by force fitting, FIG. 3A being an elevation view of a nozzle, FIG. 3B an end view and FIG. 3C, a axial section of the force fitting obtained.
  • the nozzles are provided with a collar 7, shaped and bonded to the main tube 1 using a cyanoacrylic adhesive 10 (Black Max from the company "LOCTITE").
  • the main tube 1 has an end bend 8 placed in the part 9 of the mold 3, with a clearance 12 of between 1 and 2 mm, which makes it possible to precisely position the tube (1) provided with its tappings in the mold 3
  • the other flattened end 13 of the tube 1, 50 cm long, is straight and can slide in part 10 of the mold 3 (free thermal expansion towards the outside of the mold).
  • the flanges are obtained by axial crushing of the tube 2 constituting the nozzles (fig.2A, B and C) and after shaping, these are glued to the tube 1 (fig.2D).
  • the penetration of the nozzle into the tube takes place over a length 1 of the order of mm.
  • an AS5U3G alloy is poured into the cavity 11 at a temperature of 730 ° C. and at a speed of 120 l / minute.
  • the part fitted with its system of integrated channels is removed from the mold, which is then rid of unnecessary excess lengths, 8 and 13, for example.
  • the tube is then chamfered over a length b of the order of mm, then force-fitted into the opening 23 of the tube 1 until the beads 22 serving as a stop provide the desired depth of penetration 1.
  • the method according to the invention makes it possible to obtain parts having a system of internal channels which can have a complex design, without resorting to precise and long machining on specialized machines, and without having to plug the outputs of the machined channels which are unnecessary in service and simply required by the drilling steps.

Landscapes

  • Mechanical Engineering (AREA)
  • Engineering & Computer Science (AREA)
  • Forging (AREA)
  • Cylinder Crankcases Of Internal Combustion Engines (AREA)
  • Manufacture Of Alloys Or Alloy Compounds (AREA)
  • Continuous Casting (AREA)
  • Rigid Pipes And Flexible Pipes (AREA)
  • Laminated Bodies (AREA)
  • Powder Metallurgy (AREA)
  • Automatic Assembly (AREA)
  • Golf Clubs (AREA)
  • Valve Housings (AREA)
  • Bending Of Plates, Rods, And Pipes (AREA)
  • Forms Removed On Construction Sites Or Auxiliary Members Thereof (AREA)
  • Body Structure For Vehicles (AREA)
  • Molds, Cores, And Manufacturing Methods Thereof (AREA)
  • Moulds For Moulding Plastics Or The Like (AREA)
  • Diaphragms For Electromechanical Transducers (AREA)

Abstract

The invention relates to a method for production of castings of aluminium or its alloys comprising integrated runners intended for the distribution of a lubricant or for the circulation of a heat-exchange fluid. <??>The method is characterised in that:   - one or more previously shaped tubes of aluminium or aluminium alloys are placed in a mould, the ends of the tube or tubes being outside the mould or the cores inserted therein;   - the alloy is poured into the cavity of the mould;   - after removal from the mould, the excess parts of the tube or tubes are removed. <??>This method applies to the mass-production of castings having a system of internal runners, such as cylinder heads, compressor cylinders, lubrication systems, convectors, etc. <IMAGE>

Description

L'invention concerne un procédé de réalisation de pièces moulées en A1 ou ses alliages comportant des canaux intégrés en vue de la distribution d'un lubrifiant ou de la circulation d'un fluide caloporteur.The invention relates to a method for producing parts molded from A1 or its alloys comprising integrated channels for the distribution of a lubricant or the circulation of a heat transfer fluid.

Elle s'applique en particulier à la fabrication de culassesIt applies in particular to the manufacture of cylinder heads

On connaît un procédé de ce type décrit dans les demandes japonaises JA-55-73455 et JA-55-68168 dans lesquelles un tube métallique rempli de sable ou de matériau analogue est noyé dans une pièce moulée. Après solidification le sable est éliminé. Cependant, cette méthode présente les désavantages suivants :

  • avant coulée, il faut remplir les tubes avec du sable ce qui constitue une opération supplémentaire et délicate, surtout si les tubes sont étroits et tortueux;
  • après coulée, il faut éliminer le sable contenu à l'intérieur des canaux, ce qui peut être difficile si les canaux sont étroits et tortueux;
  • des grains de sable peuvent ne pas être éliminés en restant accrochés aux parois internes du tube, ce qui peut induire des inconvénients si ceux-ci sont entraînés par la suite dans les circuits d'utilisation (de lubrifiant ou de refroidissement);
  • difficultés à réfrigérer les tubes en cours de coulée.
A process of this type is known, described in Japanese applications JA-55-73455 and JA-55-68168 in which a metal tube filled with sand or similar material is embedded in a molded part. After solidification the sand is removed. However, this method has the following disadvantages:
  • before casting, the tubes must be filled with sand which is an additional and delicate operation, especially if the tubes are narrow and tortuous;
  • after casting, remove the sand inside the channels, which can be difficult if the channels are narrow and tortuous;
  • grains of sand may not be eliminated by remaining attached to the internal walls of the tube, which can cause drawbacks if these are subsequently entrained in the circuits of use (lubricant or cooling);
  • difficulties in refrigerating the tubes during casting.

La demanderesse, voulant éliminer ces inconvénients, a donc mis au point la méthode suivante selon l'invention.The Applicant, wishing to eliminate these drawbacks, has therefore developed the following method according to the invention.

Un (ou plusieurs) tube(s) principal(aux) en aluminium ou un de ses alliages préalablement conformé(s) et éventuellement muni(s) d'un ou plusieurs piquages est (sont) placé(s) dans le moule, dans une position déterminée, les extrémités ouvertes des tubes pouvant correspondre avec l'extérieur du moule, soit au travers de celui-ci, soit au travers de noyaux; les extrémités fermées peuvent être noyées dans la pièce.One (or more) main tube (s) made of aluminum or one of its alloys previously shaped (s) and possibly fitted with one or more several nozzles are (are) placed in the mold, in a determined position, the open ends of the tubes being able to correspond with the outside of the mold, either through the latter or through cores; closed ends can be embedded in the room.

L'alliage de la pièce est alors coulé dans la cavité du moule après fermeture de celui-ci, pour noyer le tube ou système de tubes.The alloy of the part is then poured into the mold cavity after closing it, to drown the tube or tube system.

L'alliage constituant les tubes ainsi que leurs épaisseurs sont déterminés de façon à éviter toutes fusions locales lors du remplissage du moule par l'alliage liquide. D'une façon générale il est préconisé l'utilisation d'un tube en A5 (Norme AFNOR-NF-57702) d'épaisseur supérieur ou égale à 1 mm. Les rayons de cintrage des tubes ne doivent pas engendrer dans la fibre tendue des coudes des amincissements trop importants, incompatibles avec la tenue du tube au moment du remplissage; de préférence le rayon de cintrage est supérieur ou égal à 3 fois le diamètre externe des tubes.The alloy constituting the tubes and their thicknesses are determined so as to avoid any local fusions during filling of the mold with the liquid alloy. In general, the use of an A5 tube (AFNOR-NF-57702 standard) with a thickness greater than or equal to 1 mm is recommended. The bending radii of the tubes must not cause excessively thinning in the stretched fiber of the elbows, incompatible with the strength of the tube at the time of filling; preferably the bending radius is greater than or equal to 3 times the external diameter of the tubes.

- Les piquages sont fixés sur le tube principal :

  • a) soit par des collerettes, obtenues par écrasement axial du tube et conformées au diamètre externe du tube principal. La fixation a lieu alors par collage ou soudage. Le positionnement est donné par la collerette et l'ajustement du piquage dans le tube principal (fig.2);
  • b) soit par emmanchement à force de l'extrémité chanfreinée du piquage dans un orifice du tube principal avec un serrage positif allant jusqu'à 0,5 mm. Le positionnement est donné par l'extrémité des rainures longitudinales des piquages assurant le serrage latéral (fig.3);
  • c) soit par soudage direct.
- The nozzles are fixed on the main tube:
  • a) or by flanges, obtained by axial crushing of the tube and shaped to the external diameter of the main tube. The fixing then takes place by gluing or welding. The positioning is given by the collar and the adjustment of the nozzle in the main tube (fig.2);
  • b) or by force fitting the chamfered end of the nozzle into an orifice of the main tube with a positive clamping of up to 0.5 mm. The positioning is given by the end of the longitudinal grooves of the nozzles ensuring lateral tightening (fig.3);
  • c) either by direct welding.

La profondeur de pénétration d'un piquage dans le tube principal est de l'ordre de 1 mm par rapport à sa surface interne. Ce positionnement est fixé par la position de la collerette dans le cas a) soit par rainurage longitudinal externe par repoussage de l'extrémité de l'ajustage dans le cas b). Dans ce dernier cas, les surépaisseurs obtenues sur le diamètre assurent alors le serrage latéral et les bourrelets d'extrémité des rainures assurent le positionnement axial de l'ajustage sur le tube. Le positionnement du tube (ou du système de tubes) dans le moule assure son centrage par rapport à sa position de référence, offre la possibilité de dilatation axiale des tubes et le blocage en rotation de ceux-ci.The penetration depth of a tapping into the main tube is of the order of 1 mm relative to its internal surface. This positioning is fixed by the position of the collar in case a) or by external longitudinal grooving by pushing back the end of the adjustment in case b). In the latter case, the extra thicknesses obtained on the diameter then ensure lateral tightening and the end beads of the grooves ensure the axial positioning of the fitting on the tube. The positioning of the tube (or of the tube system) in the mold ensures its centering with respect to its reference position, offers the possibility of axial expansion of the tubes and their rotation blocking.

Le postionnement du tube (ou du système de tube) dans le moule est par exemple réalisé par un coude à 90°, externe à la partie utile de la pièce moulée et inséré dans un noyau adjacent au moule avec un jeu de l'ordre de 1 à 2 mm, pour une longueur hors tout de 50 cm environ. L'autre extrémité du tube est insérée dans un noyau à logement cylindrique permettant la libre dilatation axiale du tube mais assurant par ailleurs, un parfait centrage du système de tubes dans le moule. Le moule lui-même est réalisé soit en sable, soit en métal, soit mixte, dans les conditions habituelles pour la coulée des alliages d'aluminium. Les alliages habituellement utilisés sont les AS7G ou AS5U3G aux états Y20,23 ou Y30,33 suivant la norme AFNOR NF-A-57702.The positioning of the tube (or of the tube system) in the mold is for example carried out by a 90 ° elbow, external to the useful part of the molded part and inserted in a core adjacent to the mold with a clearance of the order of 1 to 2 mm, for an overall length of approximately 50 cm. The other end of the tube is inserted into a cylindrical housing core allowing free axial expansion of the tube but also ensuring perfect centering of the tube system in the mold. The mold itself is made either of sand, or of metal, or mixed, under the usual conditions for the casting of aluminum alloys. The alloys usually used are AS7G or AS5U3G in states Y20,23 or Y30.33 according to the AFNOR standard NF-A-57702.

Les cotes d'entraxe des piquages seront corrigées, par rapport aux cotes souhaitées, d'un coefficient tenant compte des déformations du tube principal lors de la coulée et de la solidification de la pièce : à savoir allongement sous l'effet de la chaleur du métal liquide et retrait au moment de la solidification de la pièce.The center-to-center dimensions of the taps will be corrected, with respect to the desired dimensions, by a coefficient taking into account the deformations of the main tube during casting and the solidification of the part: namely elongation under the effect of the heat of the liquid metal and shrinkage when the part solidifies.

La température de coulée de la pièce est la température la plus faible permettant d'obtenir la bonne venue de la pièce et la non fusion du tube. La température de coulée est inférieure ou égale à 760°C et de préférence comprise entre 720°C et 740°C.The casting temperature of the part is the lowest temperature allowing the good coming of the part and the non-melting of the tube. The casting temperature is less than or equal to 760 ° C and preferably between 720 ° C and 740 ° C.

A titre indicatif, les diamètres internes usuels des tubes utilisés sont généralement compris entre 3 et 15 mm.As a guide, the usual internal diameters of the tubes used are generally between 3 and 15 mm.

Il est préférable de choisir les alliages du tube ou système de tubes et de la pièce coulée de telle sorte que la température de fusion de l'alliage de la pièce moulée soit inférieure ou égale à celle du métal (ou alliage) constituant les tubes (ou système de tubes).It is preferable to choose the alloys of the tube or tube system and of the casting so that the melting temperature of the alloy of the molded part is less than or equal to that of the metal (or alloy) constituting the tubes ( or tube system).

Pendant la phase de remplissage, le temps de contact entre le système de tubes et le métal fondu doit être inférieur à 10 secondes, et de préférence 5 secondes.During the filling phase, the contact time between the tube system and the molten metal must be less than 10 seconds, and preferably 5 seconds.

Le tube (ou système des tubes) peu(ven)t aussi être refroidi(s) au cours de l'opération de coulée par une circulation d'un fluide de refroidissement, tel que l'air comprimé ou la vapeur d'azote liquide.The tube (or tube system) can also be cooled during the casting operation by the circulation of a cooling fluid, such as compressed air or liquid nitrogen vapor. .

L'invention sera mieux comprise à l'aide de l'exemple suivant, illustré par les figures 1 à 3 et, reproduisant les conditions de coulée d'une partie de culasse.The invention will be better understood with the aid of the following example, illustrated by FIGS. 1 to 3 and, reproducing the conditions for casting a part of the cylinder head.

La figure 1 représente une vue en coupe d'un tube et de ses piquages en place dans un moule de coulée, en élévation (1A) selon la ligne II-II de la fig.1B et en plan (1B) selon la ligne I-I de la fig.1A.Figure 1 shows a sectional view of a tube and its tappings in place in a casting mold, in elevation (1A) along line II-II of fig.1B and in plan (1B) along line II of fig. 1A.

Par souci de clarté des dessins le système d'alimentation de la pièce coulée en gravité n'est pas représenté.For the sake of clarity of the drawings, the feed system for the gravity casting is not shown.

La figure 2 montre en coupe le détail de la jonction d'un piquage sur le tube principal à l'aide d'une collerette conformée et collée (fig.2A à 2D) à différentes étapes de conformation.Figure 2 shows in section the detail of the junction of a tapping on the main tube using a shaped and glued collar (fig.2A to 2D) at different stages of shaping.

La figure 3 représente le détail de la jonction d'un piquage sur le tube principal par emmanchement à force, la figure 3A étant une vue en élévation d'un piquage, la fig.3B une vue en bout et la fig.3C, une coupe axiale de l'emmanchement à force obtenu.FIG. 3 represents the detail of the junction of a nozzle on the main tube by force fitting, FIG. 3A being an elevation view of a nozzle, FIG. 3B an end view and FIG. 3C, a axial section of the force fitting obtained.

Un tube 1 muni de 3 piquages fermés 2 est placé dans un moule 3 constitué d'une partie inférieure 4 et d'une partie supérieure 5, s'appuyant entre elles par le plan de joint 6; le tube 1 a les dimensions suivantes : diamètre 12 X 8 mm et les piquages diamètre 6 X 4 mm. Le moule est constitué d'un mélange PET-SET de la societé "ASHLAND AVEBENE" dont la composition est :

  • silice 55AFA
  • isocyanate : 0,6% (en poids)
  • résine phénolique : 0,6% (en poids)
  • catalyseur PP 3/4 = 20% de la quantité de résine (en poids).
A tube 1 provided with 3 closed nozzles 2 is placed in a mold 3 consisting of a lower part 4 and an upper part 5, bearing between them by the joint plane 6; the tube 1 has the following dimensions: diameter 12 X 8 mm and the nozzles diameter 6 X 4 mm. The mold consists of a PET-SET mixture from the company "ASHLAND AVEBENE", the composition of which is:
  • 55AFA silica
  • isocyanate: 0.6% (by weight)
  • phenolic resin: 0.6% (by weight)
  • catalyst PP 3/4 = 20% of the quantity of resin (by weight).

Les piquages sont munis d'une collerette 7, conformée et collée sur le tube principal 1 à l'aide d'une colle 10 cyanoacrylique (Black Max de la societé "LOCTITE").The nozzles are provided with a collar 7, shaped and bonded to the main tube 1 using a cyanoacrylic adhesive 10 (Black Max from the company "LOCTITE").

Le tube principal 1 possède un coude d'extrémité 8 placé dans la partie 9 du moule 3, avec un jeu 12 compris entre 1 et 2 mm, qui permet de positionner avec précision le tube (1) muni de ses piquages dans le moule 3. L'autre extrémité aplatie 13 du tube 1 de 50 cm de longueur, est droite et peut coulisser dans la partie 10 du moule 3 (libre dilatation thermique vers l'extérieur du moule).The main tube 1 has an end bend 8 placed in the part 9 of the mold 3, with a clearance 12 of between 1 and 2 mm, which makes it possible to precisely position the tube (1) provided with its tappings in the mold 3 The other flattened end 13 of the tube 1, 50 cm long, is straight and can slide in part 10 of the mold 3 (free thermal expansion towards the outside of the mold).

Les collerettes sont obtenues par écrasement axial du tube 2 constituant les piquages (fig.2A, B et C) et après conformation, celles-ci sont collées sur le tube 1 (fig.2D).The flanges are obtained by axial crushing of the tube 2 constituting the nozzles (fig.2A, B and C) and after shaping, these are glued to the tube 1 (fig.2D).

La pénétration du piquage dans le tube a lieu sur une longueur 1 de l'ordre du mm.The penetration of the nozzle into the tube takes place over a length 1 of the order of mm.

Le tube 1 et ses piquages étant positionnés dans le moule 3, comme cela vient d'être décrit, on coule dans la cavité 11 un alliage AS5U3G à une température de 730°C et à une vitesse de 120 l/minute.The tube 1 and its tappings being positioned in the mold 3, as has just been described, an AS5U3G alloy is poured into the cavity 11 at a temperature of 730 ° C. and at a speed of 120 l / minute.

Après solidification, on démoule la pièce munie de son système de canaux intégrés, laquelle est ensuite débarrassée des surlongueurs inutiles, 8 et 13, par exemple.After solidification, the part fitted with its system of integrated channels is removed from the mold, which is then rid of unnecessary excess lengths, 8 and 13, for example.

Un autre mode de jonction du piquage 2 sur le tube 1 est représenté à la fig.3.Another method of joining the tap 2 on the tube 1 is shown in fig.3.

Il consiste à former par repoussage à l'extrémité du piquage des rainures longitudinales 20 sur sa face externe, ce qui forme de légers bourrelets longitudinaux 21 de hauteur a (environ 0,3 mm) et un bourrelet d'extrémité 22.It consists in forming, by pushing back, at the end of the stitching, longitudinal grooves 20 on its external face, which forms light longitudinal beads 21 of height a (about 0.3 mm) and an end bead 22.

Le tube est ensuite chanfreiné sur une longueur b de l'ordre du mm, puis emmanché à force dans l'ouverture 23 du tube 1 jusqu'à ce que les bourrelets 22 servant de butée assurent la profondeur de pénétration 1 recherchée.The tube is then chamfered over a length b of the order of mm, then force-fitted into the opening 23 of the tube 1 until the beads 22 serving as a stop provide the desired depth of penetration 1.

Le procédé selon l'invention permet d'obtenir des pièces ayant un système de canaux internes pouvant présenter un dessin complexe, sans recourir à un usinage précis et long sur machines spécialisées, et sans avoir à reboucher les sorties des canaux usinés inutiles en service et simplement exigées par les étapes de perçages.The method according to the invention makes it possible to obtain parts having a system of internal channels which can have a complex design, without resorting to precise and long machining on specialized machines, and without having to plug the outputs of the machined channels which are unnecessary in service and simply required by the drilling steps.

Ce procédé simple et peu coûteux est adaptable à la production en série de toutes sortes de pièces moulées telles que des culasses, des cylindres et valves de compresseurs, des systèmes de lubrification, des convecteurs, etc...This simple and inexpensive process is suitable for mass production of all kinds of molded parts such as cylinder heads, compressor cylinders and valves, lubrication systems, convectors, etc.

Claims (17)

Procédé d'obtention d'une pièce moulée en A1 ou ses alliages contenant des canaux intégrés caractérisé en ce que - un tube (1) (ou système de tubes) en aluminium ou un de ses alliages d'épaisseur supérieure ou égale à 1 mm, préalablement conformé est placé dans un moule (3) dans une position déterminée, les extrémités du tube (ou du système de tubes) étant à l'extérieur du moule ou des noyaux qui y sont insérés - on coule l'alliage de la pièce dans la cavité du moule - après démoulage on élimine les parties excédentaires du tube (ou du système de tubes) Process for obtaining a part molded from A1 or its alloys containing integrated channels, characterized in that - a tube (1) (or system of tubes) made of aluminum or one of its alloys with a thickness greater than or equal to 1 mm, previously shaped, is placed in a mold (3) in a determined position, the ends of the tube (or of the tube system) being outside the mold or the cores inserted therein - the alloy of the part is poured into the mold cavity - after demolding, the excess parts of the tube (or of the tube system) are removed Procédé de coulée selon la revendication 1 caractérisé en ce que la pièce moulée en aluminium ou ses alliages est une culasse.Casting method according to claim 1 characterized in that the molded part of aluminum or its alloys is a cylinder head. Procédé selon l'une quelconque des revendications 1 ou 2 caractérisé en ce que le système de tubes est constitué par un tube (1) pouvant être muni d'un ou plusieurs piquages (2).Method according to either of Claims 1 and 2, characterized in that the tube system consists of a tube (1) which can be provided with one or more tappings (2). Procédé selon la revendication 3 caractérisé en ce que les piquages (2) sont fixés sur le tube (1) par des collerettes conformées (7) et collées (10).Method according to claim 3 characterized in that the nozzles (2) are fixed to the tube (1) by shaped flanges (7) and glued (10). Procédé selon la revendication 3 caractérisé en ce que les piquages (2) sont fixés sur le tube (1) par emmanchement à force.Method according to Claim 3, characterized in that the nozzles (2) are fixed to the tube (1) by force fitting. Procédé selon la revendication 5 caractérisé en ce que l'extrémité du piquage (2) est muni de rainures longitudinales (20) obtenues par repoussage, avant emmanchement à force.A method according to claim 5 characterized in that the end of the nozzle (2) is provided with longitudinal grooves (20) obtained by pushing back, before force fitting. Procédé selon l'une des revendications 5 ou 6 caractérisé en ce que le serrage au diamètre est positif pouvant aller jusqu'à 5/10 de mm.Method according to one of claims 5 or 6 characterized in that the tightening to the diameter is positive up to 5/10 mm. Procédé selon l'une des revendications 4 à 7 caractérisé en ce que le (ou les) piquage(s)(2) pénétre(nt) dans le tube (1)Method according to one of Claims 4 to 7, characterized in that the nozzle (s) (2) penetrate (s) into the tube (1) Procédé selon la revendication 8 caractérisé en ce que la pénétration 1 est de l'ordre du mm.Method according to claim 8 characterized in that the penetration 1 is of the order of mm. Procédé selon une des revendications 1 ou 2 caractérisé en ce que le tube (ou le système de tubes) (1) est positionné avant coulée dans le moule (1) de façon parfaitement centrée, avec la possibilité de dilatation axiale des tubes et un blocage en rotation.Method according to one of claims 1 or 2 characterized in that the tube (or the tube system) (1) is positioned before casting in the mold (1) in a perfectly centered manner, with the possibility of axial expansion of the tubes and a blocking in rotation. Procédé selon la revendication 10 caractérisé en ce que le positionnement du tube (ou système de tubes) est réalisé par un coude à 90° (2) externe à la partie utile de la pièce moulée (1), inséré dans un noyau (9) externe au moule avec un jeu (12) et par l'extrémité aplatie (13) du tube.Method according to Claim 10, characterized in that the positioning of the tube (or tube system) is carried out by a 90 ° bend (2) external to the useful part of the molded part (1), inserted in a core (9) external to the mold with a clearance (12) and by the flattened end (13) of the tube. Procédé selon l'une des revendications 1 à 11 caractérisé en ce que pendant la coulée de la pièce on fait circuler un fluide de refroidissement dans le tube (ou système de tube) (1).Method according to one of claims 1 to 11 characterized in that during the casting of the part a coolant is circulated in the tube (or tube system) (1). Procédé selon l'une des revendications 1 à 12 caractérisé en ce que la température de fusion du tube (ou système de tubes) est supérieure ou égale à celle de l'alliage coulé constituant la pièce moulée.Method according to one of claims 1 to 12 characterized in that the melting temperature of the tube (or tube system) is greater than or equal to that of the cast alloy constituting the molded part. Procédé selon l'une des revendications 1 à 13 caractérisé en ce que l'alliage constituant la pièce moulée est de l'aluminium commercialement pur (type A5)Method according to one of claims 1 to 13 characterized in that the alloy constituting the molded part is commercially pure aluminum (type A5) Procédé selon l'une des revendications 1 à 14 caractérisé en ce que la température de coulée est inférieure à 760°C.Method according to one of claims 1 to 14 characterized in that the casting temperature is less than 760 ° C. Procédé selon la revendication 15 caractérisé en ce que la température de coulée est comprise entre 720°C et 740°C.Process according to Claim 15, characterized in that the casting temperature is between 720 ° C and 740 ° C. Procédé selon l'une des revendications 15 ou 16 caractérisé en ce que le temps de contact entre le tube (ou système de tubes) et le métal fondu est inférieur à 10 secondes, et de préférence 5 secondes.Method according to one of claims 15 or 16 characterized in that the contact time between the tube (or tube system) and the molten metal is less than 10 seconds, and preferably 5 seconds.
EP91420284A 1990-08-02 1991-07-31 Method for realization of castings of aluminium or its alloys with integrated runners Expired - Lifetime EP0470021B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR9010487 1990-08-02
FR9010487A FR2665384B1 (en) 1990-08-02 1990-08-02 PROCESS FOR PRODUCING A MOLDED PART IN AL OR ITS ALLOYS PROVIDED WITH INTEGRATED CHANNELS.

Publications (2)

Publication Number Publication Date
EP0470021A1 true EP0470021A1 (en) 1992-02-05
EP0470021B1 EP0470021B1 (en) 1995-06-28

Family

ID=9399743

Family Applications (1)

Application Number Title Priority Date Filing Date
EP91420284A Expired - Lifetime EP0470021B1 (en) 1990-08-02 1991-07-31 Method for realization of castings of aluminium or its alloys with integrated runners

Country Status (16)

Country Link
US (1) US5305818A (en)
EP (1) EP0470021B1 (en)
JP (1) JP2986585B2 (en)
KR (1) KR100210171B1 (en)
AT (1) ATE124306T1 (en)
BR (1) BR9105018A (en)
CA (1) CA2048187C (en)
DE (1) DE69110786T2 (en)
ES (1) ES2074246T3 (en)
FI (1) FI96285C (en)
FR (1) FR2665384B1 (en)
IE (1) IE76321B1 (en)
IS (1) IS1675B (en)
MX (1) MX9100475A (en)
NO (1) NO178918C (en)
PT (1) PT98547B (en)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0610020A1 (en) * 1993-02-05 1994-08-10 Clifford Youngs Metal gates and fencing and methods of making the same
WO2008028669A1 (en) * 2006-09-08 2008-03-13 Knorr-Bremse Systeme für Nutzfahrzeuge GmbH Air compressor comprising a cast aluminum crankcase
EP2008740A1 (en) * 2007-06-29 2008-12-31 Trimet Aluminium AG Method and device for pressure moulding of layered metal moulded pieces
WO2010106043A1 (en) 2009-03-17 2010-09-23 Hispano Suiza Moulded casing with added piping
CN109648063A (en) * 2017-10-12 2019-04-19 烟台吉森新材料科技有限公司 The fixed structure and method of water cooling tube in a kind of casting of pipe laying

Families Citing this family (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NL9401061A (en) * 1994-06-27 1996-02-01 Intergas B V Method for manufacturing a heat exchanger and a heat exchanger.
JPH1076357A (en) * 1996-09-04 1998-03-24 Toyota Motor Corp Method and device for casting in cylindrical body
DE19647069A1 (en) * 1996-11-14 1998-05-20 Heidelberger Druckmasch Ag Hollow cast body e.g. printing machine cylinder preform
DE10036481A1 (en) * 2000-07-20 2002-02-07 Metallwerke Harzgerode Gmbh Production of a piston comprises filling a hollow profile forming a wall of a cooling channel in the piston, placing the profile in a mold, filling the mold with a melt, pressing, solidifying, removing from the mold, and heating the piston
US20050133187A1 (en) * 2003-12-17 2005-06-23 Sean Seaver Die casting method system and die cast product
US20050133102A1 (en) * 2003-12-22 2005-06-23 Blackman Donald E. Hydraulic end head with internally cast hydraulic circuits
FR2876320B1 (en) 2004-10-12 2008-05-16 Montupet Sa Sa WHEEL AND METHOD OF MOLDING WHEEL WITH VALVE DEPORTEE AND MASQUEE
DE102008005438A1 (en) * 2008-01-22 2009-07-23 Knorr-Bremse Systeme für Nutzfahrzeuge GmbH Compressor cylinder head and method of making a compressor cylinder head
US8863381B2 (en) * 2010-12-22 2014-10-21 GM Global Technology Operations LLC Method of making a piston oil gallery using a hollow metallic core
KR101692932B1 (en) * 2014-06-17 2017-01-04 육송(주) jig for cutting and elbow for fire hose reel apparatus
US20160256922A1 (en) * 2015-03-03 2016-09-08 Asia Vital Components (China) Co., Ltd. Manufacturing method of cole plate structure
CN105750505A (en) * 2016-04-13 2016-07-13 浙江锠泰机械工业有限公司 Compressor bore casting method

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3013745A1 (en) * 1980-04-10 1981-10-15 Zahnradfabrik Friedrichshafen Ag, 7990 Friedrichshafen CASTING PART WITH CHANNELS
WO1987000779A1 (en) * 1985-07-31 1987-02-12 Fonderies Et Affinage De L'isere Method for fabricating by casting a metal part which is internally provided with a recessed portion surrounded by a tube

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3848666A (en) * 1970-11-19 1974-11-19 Ethyl Corp Foamed metal bodies
FR2379340A1 (en) * 1977-02-08 1978-09-01 Roche Maurice Mfr. of large section castings with internal tubing - involves casting the metal around the tubing while the tubing is injected with atomised water droplets
JPS5597861A (en) * 1978-11-25 1980-07-25 Keiichiro Miyazaki Insert casting method of metal tubular body of pressure- resistant cylinder casting
JPS5573455A (en) * 1978-11-28 1980-06-03 Keiichiro Miyazaki Pipe body insert casting method weld-combining straight pipe and bend
JPS5934472A (en) * 1982-08-20 1984-02-24 Toyota Motor Corp Interlock controller for suction path wall heating and cabin warming

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3013745A1 (en) * 1980-04-10 1981-10-15 Zahnradfabrik Friedrichshafen Ag, 7990 Friedrichshafen CASTING PART WITH CHANNELS
WO1987000779A1 (en) * 1985-07-31 1987-02-12 Fonderies Et Affinage De L'isere Method for fabricating by casting a metal part which is internally provided with a recessed portion surrounded by a tube

Non-Patent Citations (3)

* Cited by examiner, † Cited by third party
Title
PATENT ABSTRACTS OF JAPAN vol. 4, no. 108 (M-24)(590), 5 août 1980; & JP - A - 5568168 (KEIICHIROU) 22.05.1980 *
PATENT ABSTRACTS OF JAPAN vol. 4, no. 116 (M-27)(598), 19 août 1980; & JP - A - 5573455 (KEIICHIROU) 03.06.1980 *
PATENT ABSTRACTS OF JAPAN vol. 6, no. 113 (M-138)(991), 24 juin 1982; & JP - A - 5741874 (HONDA GIKEN) 09.03.1982 *

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0610020A1 (en) * 1993-02-05 1994-08-10 Clifford Youngs Metal gates and fencing and methods of making the same
WO2008028669A1 (en) * 2006-09-08 2008-03-13 Knorr-Bremse Systeme für Nutzfahrzeuge GmbH Air compressor comprising a cast aluminum crankcase
US8371828B2 (en) 2006-09-08 2013-02-12 Knorr-Bremse Systeme Fuer Nutzfahrzeuge Gmbh Air compressor having a cast aluminum crankcase
EP2008740A1 (en) * 2007-06-29 2008-12-31 Trimet Aluminium AG Method and device for pressure moulding of layered metal moulded pieces
WO2010106043A1 (en) 2009-03-17 2010-09-23 Hispano Suiza Moulded casing with added piping
CN109648063A (en) * 2017-10-12 2019-04-19 烟台吉森新材料科技有限公司 The fixed structure and method of water cooling tube in a kind of casting of pipe laying
CN109648063B (en) * 2017-10-12 2021-04-06 烟台吉森新材料科技有限公司 Fixing structure and method for water cooling pipe in buried pipe casting

Also Published As

Publication number Publication date
NO178918B (en) 1996-03-25
IE76321B1 (en) 1997-10-22
NO913006D0 (en) 1991-08-01
NO178918C (en) 1996-07-03
EP0470021B1 (en) 1995-06-28
FR2665384A1 (en) 1992-02-07
DE69110786T2 (en) 1995-11-23
PT98547A (en) 1993-09-30
CA2048187C (en) 1999-04-27
IS3738A7 (en) 1992-02-03
MX9100475A (en) 1992-04-01
IE912728A1 (en) 1992-02-12
PT98547B (en) 1999-01-29
IS1675B (en) 1997-12-31
FR2665384B1 (en) 1992-10-16
ATE124306T1 (en) 1995-07-15
KR100210171B1 (en) 1999-07-15
FI96285C (en) 1996-06-10
JP2986585B2 (en) 1999-12-06
JPH04251656A (en) 1992-09-08
FI96285B (en) 1996-02-29
FI913671A0 (en) 1991-08-01
CA2048187A1 (en) 1992-02-03
DE69110786D1 (en) 1995-08-03
FI913671A (en) 1992-02-03
BR9105018A (en) 1993-05-25
ES2074246T3 (en) 1995-09-01
US5305818A (en) 1994-04-26
NO913006L (en) 1992-02-03

Similar Documents

Publication Publication Date Title
EP0470021B1 (en) Method for realization of castings of aluminium or its alloys with integrated runners
US6145184A (en) Method of manufacturing hollow bicycle crank arm
FR2642155A1 (en) HEAT EXCHANGER WITH GLUE TUBES AND METHOD FOR THE PRODUCTION THEREOF
CH646045A5 (en) HANDLE FOR A ROTARY CHANNEL DENTAL INSTRUMENT, AND METHOD FOR MANUFACTURING SUCH A HANDLE
JP3759981B2 (en) Fuel filler pipe and its manufacturing method
FR2833512A1 (en) INSTALLATION FOR BLOWING TERMOPLASTIC POLYMER CONTAINERS
EP0019256A1 (en) Socketed ductile cast iron pipe
EP0586314B1 (en) Method of making pieces of casting alloys with reinforced parts
EP0433125B1 (en) Method for producing a sparkplug well in the cylinder head of an internal combustion engine
FR2787548A1 (en) COMPOSITE FLEXIBLE FOR TRANSPORTING FLUID AND MANUFACTURING METHOD THEREOF
BE1010995A3 (en) POSITIVE ENGAGEMENT ASSEMBLY OF CERAMIC MOLDS.
EP0466077B1 (en) Method of connecting an optical cable to a protection tube for a ferrule or splice connection
FR2518014A1 (en) Mfr. of cranked flexible hose - prevented from shrinking during thermosetting by clamping ends of hose
EP2408578A1 (en) Moulded casing with added piping
CH366636A (en) Machine component and method for its manufacture
JPH09277313A (en) Mold for tubular molded article and molding method thereof
FR2625455A1 (en) Method and device for making moulded pieces
FR2662471A1 (en) Method for making spark plug wells in a cylinder head of an internal combustion engine, and set of elements intended to form at least one such spark plug well
BE1006006A3 (en) Refractory piece for a casting tap hole on a furnace receptacle
FR2710972A1 (en) Plastic collecting vessel for heat exchanger and method of manufacture
FR2784158A1 (en) HYDRODYNAMIC TORQUE CONVERTER FOR THE TRANSMISSION OF A MOTOR VEHICLE
FR2685230A1 (en) Assembly in the form of a cluster of patterns for the consumable- (disposable-) pattern moulding of components, and method for assembling such patterns as a cluster
EP1987311A1 (en) Metallic manifold, heat exchanger comprising such a manifold and method for making same
EP1125775A1 (en) Method to fix the suspension arm to the axle and axle with suspension arm fixed with this method
BE340406A (en)

Legal Events

Date Code Title Description
PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

AK Designated contracting states

Kind code of ref document: A1

Designated state(s): AT BE CH DE DK ES GB GR IT LI LU NL SE

17P Request for examination filed

Effective date: 19920215

17Q First examination report despatched

Effective date: 19930805

GRAA (expected) grant

Free format text: ORIGINAL CODE: 0009210

AK Designated contracting states

Kind code of ref document: B1

Designated state(s): AT BE CH DE DK ES GB GR IT LI LU NL SE

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: DK

Effective date: 19950628

Ref country code: GR

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 19950628

REF Corresponds to:

Ref document number: 124306

Country of ref document: AT

Date of ref document: 19950715

Kind code of ref document: T

ITF It: translation for a ep patent filed

Owner name: ING. A. GIAMBROCONO & C. S.R.L.

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: CH

Effective date: 19950731

Ref country code: BE

Effective date: 19950731

Ref country code: LU

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 19950731

Ref country code: LI

Effective date: 19950731

GBT Gb: translation of ep patent filed (gb section 77(6)(a)/1977)

Effective date: 19950629

REF Corresponds to:

Ref document number: 69110786

Country of ref document: DE

Date of ref document: 19950803

REG Reference to a national code

Ref country code: ES

Ref legal event code: FG2A

Ref document number: 2074246

Country of ref document: ES

Kind code of ref document: T3

BERE Be: lapsed

Owner name: S.A. MONTUPET

Effective date: 19950731

REG Reference to a national code

Ref country code: CH

Ref legal event code: PL

PLBE No opposition filed within time limit

Free format text: ORIGINAL CODE: 0009261

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: NO OPPOSITION FILED WITHIN TIME LIMIT

26N No opposition filed
REG Reference to a national code

Ref country code: CH

Ref legal event code: AUV

Free format text: LE BREVET CI-DESSUS EST TOMBE EN DECHEANCE, FAUTE DE PAIEMENT, DE LA 5E ANNUITE.

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: GB

Payment date: 20010618

Year of fee payment: 11

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: AT

Payment date: 20010622

Year of fee payment: 11

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: SE

Payment date: 20010627

Year of fee payment: 11

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: ES

Payment date: 20010713

Year of fee payment: 11

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: NL

Payment date: 20010731

Year of fee payment: 11

REG Reference to a national code

Ref country code: GB

Ref legal event code: IF02

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: GB

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20020731

Ref country code: AT

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20020731

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: SE

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20020801

Ref country code: ES

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20020801

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: NL

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20030201

GBPC Gb: european patent ceased through non-payment of renewal fee

Effective date: 20020731

EUG Se: european patent has lapsed
NLV4 Nl: lapsed or anulled due to non-payment of the annual fee

Effective date: 20030201

REG Reference to a national code

Ref country code: ES

Ref legal event code: FD2A

Effective date: 20030811

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: IT

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES;WARNING: LAPSES OF ITALIAN PATENTS WITH EFFECTIVE DATE BEFORE 2007 MAY HAVE OCCURRED AT ANY TIME BEFORE 2007. THE CORRECT EFFECTIVE DATE MAY BE DIFFERENT FROM THE ONE RECORDED.

Effective date: 20050731

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: DE

Payment date: 20100705

Year of fee payment: 20

REG Reference to a national code

Ref country code: DE

Ref legal event code: R071

Ref document number: 69110786

Country of ref document: DE

REG Reference to a national code

Ref country code: DE

Ref legal event code: R071

Ref document number: 69110786

Country of ref document: DE

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: DE

Free format text: LAPSE BECAUSE OF EXPIRATION OF PROTECTION

Effective date: 20110801