EP2475796A2 - Metallic part provided with fibrous reinforcements and having a bevelled edge - Google Patents

Metallic part provided with fibrous reinforcements and having a bevelled edge

Info

Publication number
EP2475796A2
EP2475796A2 EP10810744A EP10810744A EP2475796A2 EP 2475796 A2 EP2475796 A2 EP 2475796A2 EP 10810744 A EP10810744 A EP 10810744A EP 10810744 A EP10810744 A EP 10810744A EP 2475796 A2 EP2475796 A2 EP 2475796A2
Authority
EP
European Patent Office
Prior art keywords
metal
fibrous reinforcements
mechanical part
fibrous
fibers
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
EP10810744A
Other languages
German (de)
French (fr)
Other versions
EP2475796B1 (en
Inventor
Richard Masson
Patrick Dunleavy
Jean-Michel Franchet
Gilles Klein
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.)
Safran Landing Systems SAS
Original Assignee
Messier Bugatti Dowty 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 Messier Bugatti Dowty SA filed Critical Messier Bugatti Dowty SA
Publication of EP2475796A2 publication Critical patent/EP2475796A2/en
Application granted granted Critical
Publication of EP2475796B1 publication Critical patent/EP2475796B1/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22C—ALLOYS
    • C22C47/00—Making alloys containing metallic or non-metallic fibres or filaments
    • C22C47/02—Pretreatment of the fibres or filaments
    • C22C47/04—Pretreatment of the fibres or filaments by coating, e.g. with a protective or activated covering
    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22C—ALLOYS
    • C22C47/00—Making alloys containing metallic or non-metallic fibres or filaments
    • C22C47/02—Pretreatment of the fibres or filaments
    • C22C47/025—Aligning or orienting the fibres
    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22C—ALLOYS
    • C22C47/00—Making alloys containing metallic or non-metallic fibres or filaments
    • C22C47/02—Pretreatment of the fibres or filaments
    • C22C47/06—Pretreatment of the fibres or filaments by forming the fibres or filaments into a preformed structure, e.g. using a temporary binder to form a mat-like element
    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22C—ALLOYS
    • C22C47/00—Making alloys containing metallic or non-metallic fibres or filaments
    • C22C47/20—Making alloys containing metallic or non-metallic fibres or filaments by subjecting to pressure and heat an assembly comprising at least one metal layer or sheet and one layer of fibres or filaments
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
    • B22F2998/00—Supplementary information concerning processes or compositions relating to powder metallurgy
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T428/00—Stock material or miscellaneous articles
    • Y10T428/13—Hollow or container type article [e.g., tube, vase, etc.]
    • Y10T428/131—Glass, ceramic, or sintered, fused, fired, or calcined metal oxide or metal carbide containing [e.g., porcelain, brick, cement, etc.]
    • Y10T428/1314—Contains fabric, fiber particle, or filament made of glass, ceramic, or sintered, fused, fired, or calcined metal oxide, or metal carbide or other inorganic compound [e.g., fiber glass, mineral fiber, sand, etc.]

Abstract

The invention relates to a mechanical part produced from a metallic preform having at least one recess (5) extending longitudinally in a privileged direction of the effort to which the operating mechanical part is subjected, and in which at least one fibrous reinforcement is inserted and then connected to the blank by a hot isostatic compression. The invention is characterised in that the fibrous reinforcement has a bevelled edge (10).

Description

PIECE METALLIQUE POURVUE DE RENFORTS FIBREUX A EXTREMITE  METAL PIECE WITH FIBROUS REINFORCEMENTS
BISEAUTEE  Chisel
L'invention est relative à une pièce métallique pourvue de renforts fibreux. The invention relates to a metal part provided with fibrous reinforcements.
ARRIERE-PLAN TECHNOLOGIQUE DE L'INVENTION On connaît du document WO 2009/034264 une bielle fabriquée de la façon suivante : réalisation d'une ébauche métallique comportant deux logements oblongs parallèles de part et d'autre d'un plan de symétrie de la bielle ; insertion dans les logements de renforts fibreux réalisés à partir de fibres de carbure gainées d'un métal compatible avec celui du conteneur ; mise sous vide et compression isostatique à chaud de l'ensemble permettant une liaison intime des fibres du renfort fibreux avec le métal de l'ébauche par diffusion métallique autour des fibres .  BACKGROUND OF THE INVENTION WO 2009/034264 discloses a connecting rod manufactured as follows: making a metal blank comprising two oblong parallel slots on either side of a plane of symmetry of the connecting rod ; inserting into the housing fibrous reinforcements made from carbide fibers sheathed with a metal compatible with that of the container; evacuation and hot isostatic compression of the assembly allowing an intimate connection of the fibers of the fibrous reinforcement with the metal of the blank by metal diffusion around the fibers.
Le métal gainant les fibres de carbure fond et se mélange au métal voisin de la préforme métallique pour réaliser un continuum métallique englobant de façon intime les fibres des renforts fibreux. Il reste alors à usiner l'ébauche pour obtenir la bielle (notamment le perçage des orifices des chapes) .  The metal sheathing the carbide fibers melts and mixes with the metal near the metal preform to achieve a metal continuum intimately encompassing the fibers of the fibrous reinforcements. It then remains to machine the blank to get the connecting rod (including the drilling holes screeds).
En général, les renforts fibreux présentent au moins une extrémité complètement noyée dans le métal de la pièce et qui présente une face terminale transversale aux fibres. A ce niveau, il existe dans la pièce un saut de rigidité abrupt, et la transmission des contraintes mécaniques entre les renforts fibreux et le conteneur risque de donner lieu à des décollements ou des arrachements susceptibles de former le départ de criques. Qui plus est, les contraintes internes sont, dans cette zone, généralement perpendiculaires aux fibres, de sorte que cette zone est affaiblie.  In general, the fibrous reinforcements have at least one end completely embedded in the metal of the part and which has an end face transverse to the fibers. At this level, there is in the piece a steep jump of rigidity, and the transmission of mechanical stresses between the fibrous reinforcements and the container may give rise to detachments or tearing likely to form the start of cracks. Moreover, the internal stresses are, in this area, generally perpendicular to the fibers, so that this zone is weakened.
OBJET DE L'INVENTION L'invention vise à proposer des pièces mécaniques en métal pourvues d'au moins un renfort fibreux, dans lequel l'inconvénient précité est atténué, voire éliminé. OBJECT OF THE INVENTION The invention aims to provide metal mechanical parts provided with at least one fibrous reinforcement, wherein the aforementioned drawback is reduced or eliminated.
BREVE DESCRIPTION DE L'INVENTION  BRIEF DESCRIPTION OF THE INVENTION
A cet effet, on propose une pièce mécanique fabriquée à partir d'une ébauche métallique présentant au moins un logement s 'étendant sensiblement selon une direction privilégiée d'effort subie par la pièce mécanique en service, et dans laquelle au moins un renfort fibreux est inséré puis intimement lié à l'ébauche par une diffusion métallique autour des fibres du renfort fibreux de sorte à présenter au moins une extrémité complètement noyée dans le métal de la pièce. Selon l'invention, la dite extrémité s'étend en biseau.  For this purpose, there is provided a mechanical part manufactured from a metal blank having at least one housing extending substantially in a preferred direction of force experienced by the mechanical part in use, and wherein at least one fibrous reinforcement is inserted then intimately bonded to the blank by a metal diffusion around the fibers of the fibrous reinforcement so as to have at least one end completely embedded in the metal of the workpiece. According to the invention, said end extends in bevel.
Ainsi, l'interface s 'étendant à l'extrémité du renfort fibreux entre ce dernier et le métal de l'ébauche est oblique relativement aux efforts transitant dans la pièce mécanique, ce qui permet une adaptation progressive de la rigidité de la pièce en suivant la direction des renforts fibreux. Cette disposition atténue les risques de désolidarisâtion du renfort fibreux avec le reste du métal .  Thus, the interface extending at the end of the fibrous reinforcement between the latter and the metal of the blank is oblique relative to the forces passing through the mechanical part, which allows a gradual adaptation of the rigidity of the part by following the direction of the fibrous reinforcements. This arrangement mitigates the risk of the fibrous reinforcement being separated from the rest of the metal.
BREVE DESCRIPTION DES FIGURES  BRIEF DESCRIPTION OF THE FIGURES
- la figure 1 est une vue schématique de dessus d'une bielle selon l'invention, illustrant l'extrémité oblique des renforts fibreux selon un premier mode particulier de réalisation de l'invention ;  - Figure 1 is a schematic top view of a connecting rod according to the invention, illustrating the oblique end of the fibrous reinforcements according to a first particular embodiment of the invention;
- la figure 2 est une vue en perspective de l'extrémité d'un des renforts fibreux, selon un deuxième mode particulier de réalisation de l'invention ;  FIG. 2 is a perspective view of the end of one of the fibrous reinforcements, according to a second particular embodiment of the invention;
- la figure 3 est une vue en perspective de dessus de l'extrémité d'un des renforts fibreux, selon un troisième mode particulier de réalisation de 1 ' invention ; - la figure 4 est une vue de face et de dessus d'une autre bielle selon l'invention, illustrant l'extrémité oblique des renforts fibreux. FIG. 3 is a perspective view from above of the end of one of the fibrous reinforcements, according to a third particular embodiment of the invention; - Figure 4 is a front view and top of another connecting rod according to the invention, illustrating the oblique end of the fibrous reinforcements.
DESCRIPTION DETAILLEE DES FIGURES  DETAILED DESCRIPTION OF THE FIGURES
Dans l'explication qui suit, la réalisation des renforts fibreux n'est pas l'objet de l'invention et ne sera donc pas décrite en détail . On pourra se référer par exemple au document WO2009/034264 qui décrit plusieurs modes de réalisation de tels renforts fibreux.  In the following explanation, the production of fibrous reinforcements is not the subject of the invention and will therefore not be described in detail. We can refer for example to WO2009 / 034264 which describes several embodiments of such fibrous reinforcements.
En référence à la figure 1, la bielle de l'invention est, conformément à un premier mode de réalisation, réalisée à partir d'une ébauche métallique 1 ici de forme généralement plate et présentant une partie courante 2 de section constante terminée par deux parties d'extrémité 3 arrondies formant des chapes d'extrémité et comportant des orifices traversants 4. Ici, l'ébauche est en alliage de titane.  Referring to Figure 1, the rod of the invention is, according to a first embodiment, made from a metal blank 1 here of generally flat shape and having a running portion 2 of constant section terminated by two parts 3 rounded end forming end screeds and having through holes 4. Here, the blank is made of titanium alloy.
Des logements longitudinaux 5 s'étendent ici parallèlement à un plan de symétrie P de l'ébauche 1, de part et d'autre de celui-ci, et forment des logements adaptés à recevoir des renforts fibreux 10 (les renforts fibreux ont été représentés coupés pour mieux faire apparaître les logements, mais en réalité, ils occupent les logements sur toute leur longueur) . On remarquera que le plan de symétrie P est parallèle à une direction privilégiée d'introduction d'efforts dans la bielle (essentiellement des efforts de traction et de compression dans l'axe de la bielle) .  Longitudinal housings 5 extend here parallel to a plane of symmetry P of the blank 1, on either side of it, and form housings adapted to receive fibrous reinforcements 10 (the fibrous reinforcements have been represented cut to better show housing, but in reality, they occupy the dwellings over their entire length). It will be noted that the plane of symmetry P is parallel to a preferred direction of introduction of forces into the connecting rod (essentially traction and compression forces in the axis of the connecting rod).
Les renforts fibreux 10 comprennent des fibres s 'étendant longitudinalement . Ici, les fibres sont des fibres de carbure de silicium gainées de titane. De préférence, les fibres sont solidarisées entre elles avant mise en place dans les rainures en leur faisant subir une compression isostatique à chaud. Selon l'invention, les logements 5 ont des extrémités 11 obliques par rapport au plan de symétrie P, et s'étendent ici parallèlement à un plan P' tangent à l'orifice traversant adjacent. Les extrémités obliques 11 peuvent être obtenues de diverses manières. De façon préférée, les rainures sont usinées dans l'ébauche métallique sur toute sa longueur, de sorte que les rainures débouchent sur le chant de l'ébauche. Puis on rapporte à chaque extrémité de rainure un bouchon en titane, ayant une partie terminale biseautée définissant l'extrémité biseautée du logement correspondant, les bouchons étant de préférence mis en place après le positionnement des renforts fibreux dans les rainures. Les bouchons peuvent être constitués d'un morceau de titane en un seul bloc, ou être réalisés par compactage d'une poudre métallique. The fibrous reinforcements comprise fibers extending longitudinally. Here, the fibers are titanium-sheathed silicon carbide fibers. Preferably, the fibers are secured to each other before being placed in the grooves by subjecting them to hot isostatic compression. According to the invention, the housings 5 have ends 11 oblique with respect to the plane of symmetry P, and here extend parallel to a plane P 'tangential to the adjacent through orifice. The oblique ends 11 can be obtained in various ways. Preferably, the grooves are machined in the metal blank over its entire length, so that the grooves open on the edge of the blank. Then, at each end of the groove, there is a titanium plug, having a bevelled end portion defining the beveled end of the corresponding housing, the plugs being preferably placed after the positioning of the fibrous reinforcements in the grooves. The plugs may consist of a piece of titanium in one block, or be made by compacting a metal powder.
Selon l'invention, les renforts fibreux ont une forme complémentaire de celle des logements, et comportent donc une extrémité 12 en biseau compatible avec l'extrémité oblique du logement.  According to the invention, the fibrous reinforcements have a shape complementary to that of the housings, and therefore comprise an end 12 bevelled compatible with the oblique end of the housing.
Les renforts fibreux 10 sont recouverts par des blocs en alliage de titane venant combler les logements 5. Ces blocs peuvent être prévus solidaires des bouchons fermant les logements.  The fibrous reinforcements 10 are covered by titanium alloy blocks filling the housing 5. These blocks may be provided integral plugs closing the housing.
Puis l'ensemble rendu étanche est mis sous vide, avant d'être soumis à une compression isostatique à chaud, de sorte que le gainage métallique des fibres fonde et diffuse pour former un composé métallique avec le métal de l'ébauche et des blocs, assurant ainsi une liaison intime entre les fibres et le métal environnant. On forme ainsi une pièce composite à matrice métallique.  Then the sealed assembly is evacuated, before being subjected to hot isostatic pressing, so that the metal cladding of the fibers melts and diffuses to form a metal compound with the metal of the blank and blocks, thus ensuring an intimate connection between the fibers and the surrounding metal. A metal matrix composite part is thus formed.
Le biseau de l'extrémité des renforts fibreux, qui est complètement noyé dans le métal de la pièce permet une transmission d'efforts entre l'extrémité des fibres et le métal environnant qui ne soit plus uniquement en arrachement, mais en cisaillement, ce qui permet de diminuer le risque de désolidarisâtion des fibres à ce niveau, et de créer une zone de transition évitant un saut de raideur trop important . The bevel of the end of the fibrous reinforcements, which is completely embedded in the metal of the part allows a transmission of forces between the end of the fibers and the surrounding metal which is no longer only in tearing, but in shear, which reduces the risk of the fibers becoming detached at this level, and to create a transition zone avoiding a jump of too much stiffness.
Selon maintenant un deuxième mode de réalisation de l'invention illustré à la figure 2, l'extrémité des renforts est biseauté selon deux pentes. Selon un troisième mode de réalisation de l'invention illustré à la figure 3, les renforts fibreux sont biseautés sur chacune de leurs faces. Ces deux derniers modes de réalisation peuvent être réalisés par chanfreinage du renfort fibreux et évitent la formation d'une pointe fine qui fragilise le renfort fibreux lors de sa manipulation.  According to now a second embodiment of the invention illustrated in Figure 2, the end of the reinforcements is beveled along two slopes. According to a third embodiment of the invention illustrated in FIG. 3, the fibrous reinforcements are bevelled on each of their faces. These last two embodiments can be made by chamfering the fibrous reinforcement and avoid the formation of a thin tip which weakens the fibrous reinforcement during handling.
La figure 4 illustre la mise en œuvre de l'invention sur une bielle 101 qui est pourvue de quatre renforts fibreux 110 biseautés selon l'invention.  Figure 4 illustrates the implementation of the invention on a rod 101 which is provided with four fiber reinforcements 110 bevelled according to the invention.
On notera bien évidement que le biseau de l'invention n'a pas strictement rien à voir avec le biseau mentionné dans le document EP1726678, qui désigne l'angle de coupe de l'extrémité de la nappe de renfort, et qui sert à imprimer un angle d'hélice à la nappe lors de sa pose. On notera qu'en tout état de cause, cette extrémité est tangente au bord de la pièce tubulaire recouverte par la nappe et qu'elle n'est donc pas noyée.  It will be noted of course that the bevel of the invention has nothing to do with the bevel mentioned in EP1726678, which designates the cutting angle of the end of the reinforcing ply, and which serves to print a helix angle to the web during its installation. Note that in any case, this end is tangent to the edge of the tubular part covered by the sheet and it is not embedded.

Claims

REVENDICATIONS
1. Pièce mécanique fabriquée à partir d'une préforme métallique présentant au moins un logement (5) s 'étendant sensiblement selon une direction privilégiée d'effort subie par la pièce mécanique en service, et dans laquelle au moins un renfort fibreux (10) est inséré puis lié à l'ébauche par diffusion métallique autour des fibres du renfort fibreux de sorte qu'au moins une de ces extrémités soit entièrement noyée dans le métal formant la pièce mécanique, caractérisée en ce que ladite extrémité (12) s'étend en biseau. 1. Mechanical part manufactured from a metal preform having at least one housing (5) extending substantially in a preferred direction of force experienced by the mechanical part in use, and wherein at least one fibrous reinforcement (10) is inserted and then bonded to the blank by metal diffusion around the fibers of the fibrous reinforcement so that at least one of these ends is entirely embedded in the metal forming the mechanical part, characterized in that said end (12) extends bevel.
2. Pièce mécanique selon la revendication 1, dans laquelle l'extrémité du renfort fibreux est biseautée selon deux pentes.  2. Mechanical part according to claim 1, wherein the end of the fiber reinforcement is tapered along two slopes.
3. Pièce mécanique selon la revendication 1, dans laquelle l'extrémité du renfort fibreux est biseautée sur chacune des faces du renfort .  3. Mechanical part according to claim 1, wherein the end of the fiber reinforcement is beveled on each side of the reinforcement.
EP10810744.2A 2009-09-11 2010-09-13 Metallic part provided with fibrous reinforcements and having a bevelled edge and manufacturing process thereof Active EP2475796B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR0904370A FR2950078B1 (en) 2009-09-11 2009-09-11 METAL PIECE PROVIDED WITH FIBROUS REINFORCEMENTS WITH BITEAUTEE END.
PCT/EP2010/005593 WO2011029619A2 (en) 2009-09-11 2010-09-13 Metallic part provided with fibrous reinforcements and having a bevelled edge

Publications (2)

Publication Number Publication Date
EP2475796A2 true EP2475796A2 (en) 2012-07-18
EP2475796B1 EP2475796B1 (en) 2018-09-05

Family

ID=42077141

Family Applications (1)

Application Number Title Priority Date Filing Date
EP10810744.2A Active EP2475796B1 (en) 2009-09-11 2010-09-13 Metallic part provided with fibrous reinforcements and having a bevelled edge and manufacturing process thereof

Country Status (8)

Country Link
US (1) US20120251744A1 (en)
EP (1) EP2475796B1 (en)
CN (1) CN102597293B (en)
BR (1) BR112012005444A2 (en)
CA (1) CA2773032C (en)
FR (1) FR2950078B1 (en)
RU (1) RU2509172C2 (en)
WO (1) WO2011029619A2 (en)

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US6568061B2 (en) * 2001-09-21 2003-05-27 Atlantic Research Corporation Method for controlling composite preform elements during processing
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FR2886290B1 (en) * 2005-05-27 2007-07-13 Snecma Moteurs Sa METHOD FOR MANUFACTURING A PIECE WITH AN INSERT IN METALLIC MATRIX COMPOSITE MATERIAL AND CERAMIC FIBERS
FR2886180B1 (en) * 2005-05-27 2007-07-13 Snecma Moteurs Sa METHOD FOR MANUFACTURING A BONDED FLAG CONSISTING OF METALLIC MATRIX CERAMIC YARNS, DEVICE FOR IMPLEMENTING THE BONDED FLOOR METHOD OBTAINED BY THE METHOD
FR2886181B1 (en) * 2005-05-27 2008-12-26 Snecma Moteurs Sa METHOD FOR MANUFACTURING A TUBULAR PIECE WITH AN INSERT IN METALLIC MATRIX COMPOSITE MATERIAL
FR2919284B1 (en) * 2007-07-26 2010-09-24 Snecma MECHANICAL PIECE COMPRISING AN INSERT IN COMPOSITE MATERIAL.
FR2919283B1 (en) * 2007-07-26 2010-09-17 Snecma MECHANICAL PIECE COMPRISING AN INSERT IN COMPOSITE MATERIAL.
FR2925896B1 (en) * 2007-12-28 2010-02-05 Messier Dowty Sa PROCESS FOR MANUFACTURING A CERAMIC FIBER REINFORCED METAL PIECE
FR2946550A1 (en) * 2009-06-16 2010-12-17 Messier Dowty Sa PROCESS FOR MANUFACTURING A METAL PIECE INCORPORATING A FIBROUS ANNULAR REINFORCEMENT.

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Also Published As

Publication number Publication date
RU2012114001A (en) 2013-10-20
FR2950078A1 (en) 2011-03-18
FR2950078B1 (en) 2012-10-05
RU2509172C2 (en) 2014-03-10
CA2773032C (en) 2015-04-21
EP2475796B1 (en) 2018-09-05
BR112012005444A2 (en) 2016-04-12
CN102597293A (en) 2012-07-18
CN102597293B (en) 2014-03-19
WO2011029619A3 (en) 2011-05-05
CA2773032A1 (en) 2011-03-17
WO2011029619A2 (en) 2011-03-17
US20120251744A1 (en) 2012-10-04

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