WO2014053754A1 - Procede pour l'integration de materiau abradable dans un logement par compression isostatique - Google Patents
Procede pour l'integration de materiau abradable dans un logement par compression isostatique Download PDFInfo
- Publication number
- WO2014053754A1 WO2014053754A1 PCT/FR2013/052316 FR2013052316W WO2014053754A1 WO 2014053754 A1 WO2014053754 A1 WO 2014053754A1 FR 2013052316 W FR2013052316 W FR 2013052316W WO 2014053754 A1 WO2014053754 A1 WO 2014053754A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- abradable material
- housing
- temperature
- sheath
- abradable
- Prior art date
Links
Classifications
-
- 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
- B22F3/00—Manufacture of workpieces or articles from metallic powder characterised by the manner of compacting or sintering; Apparatus specially adapted therefor ; Presses and furnaces
- B22F3/12—Both compacting and sintering
- B22F3/14—Both compacting and sintering simultaneously
- B22F3/15—Hot isostatic pressing
-
- 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
- B22F3/00—Manufacture of workpieces or articles from metallic powder characterised by the manner of compacting or sintering; Apparatus specially adapted therefor ; Presses and furnaces
- B22F3/12—Both compacting and sintering
-
- 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
- B22F3/00—Manufacture of workpieces or articles from metallic powder characterised by the manner of compacting or sintering; Apparatus specially adapted therefor ; Presses and furnaces
- B22F3/24—After-treatment of workpieces or articles
-
- 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
- B22F5/00—Manufacture of workpieces or articles from metallic powder characterised by the special shape of the product
- B22F5/009—Manufacture of workpieces or articles from metallic powder characterised by the special shape of the product of turbine components other than turbine blades
-
- 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
- B22F7/00—Manufacture of composite layers, workpieces, or articles, comprising metallic powder, by sintering the powder, with or without compacting wherein at least one part is obtained by sintering or compression
- B22F7/06—Manufacture of composite layers, workpieces, or articles, comprising metallic powder, by sintering the powder, with or without compacting wherein at least one part is obtained by sintering or compression of composite workpieces or articles from parts, e.g. to form tipped tools
- B22F7/08—Manufacture of composite layers, workpieces, or articles, comprising metallic powder, by sintering the powder, with or without compacting wherein at least one part is obtained by sintering or compression of composite workpieces or articles from parts, e.g. to form tipped tools with one or more parts not made from powder
-
- 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
- B22F3/00—Manufacture of workpieces or articles from metallic powder characterised by the manner of compacting or sintering; Apparatus specially adapted therefor ; Presses and furnaces
- B22F3/24—After-treatment of workpieces or articles
- B22F2003/247—Removing material: carving, cleaning, grinding, hobbing, honing, lapping, polishing, milling, shaving, skiving, turning the surface
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
- F05D—INDEXING SCHEME FOR ASPECTS RELATING TO NON-POSITIVE-DISPLACEMENT MACHINES OR ENGINES, GAS-TURBINES OR JET-PROPULSION PLANTS
- F05D2230/00—Manufacture
- F05D2230/20—Manufacture essentially without removing material
- F05D2230/22—Manufacture essentially without removing material by sintering
Definitions
- the present invention relates to a method of manufacturing a part having a housing which comprises an opening opening on a free surface of this part, this housing being intended to receive an abradable material.
- the solution currently used is to bring the dawn as close as possible to the casing by installing a soft material in a housing on the casing, at the right of the blades.
- This material is abradable, which means that it has the property of being easily dug by the end of the dawn in case of contact. In some cases, this material has wear properties, which can sometimes allow polishing of the end of the blade.
- the blade is virtually undamaged when it rubs against this abradable material, and the space between the end of the blade and the inner surface of the housing is kept to a minimum.
- inside and outside denote the region inside and outside the housing of the room, respectively.
- portions of abradable material are made by sintering, then these portions are assembled and adjusted within the housing, and these portions are glued into the housing to form a layer that fills the housing.
- the present invention aims to remedy these disadvantages.
- the aim of the invention is to propose a method which allows a good adhesion of the abradable material to the wall of the housing, and a good mechanical cohesion of the abradable material so that no detachment occurs at the interface between the block abradable material and the wall of the housing and that it does not occur cracking or premature damage within the block of abradable material.
- the method comprises the following steps: (a) The opening is closed with a sheath, the sheath having a vacuum port and a filling port,
- step (d) the following steps are performed:
- step (d) the following steps are performed:
- FIG. 1A represents a part before step (a) of the method according to the invention
- FIG. 1B represents a part after step (a) of the method according to the invention
- FIG. 1C represents a part after steps (b) and (c) and before step (d) of the method according to the invention
- FIG. 1D represents a part after step (d) of the method according to the invention
- FIG. 1E represents a part after steps (e) and (f) of the method according to the invention
- FIG. 2 shows a part after steps (b) and (c) of a variant of the method according to the invention
- FIG. 3 shows a part before step (d) of the method according to a second embodiment of the invention.
- An abradable material 50 is provided which consists of a set of particles.
- particle is meant an element which may have a grain shape, substantially spherical, or a more elongated shape in one dimension (fibers) or two dimensions (platelets).
- fibers fibers
- platelets two dimensions
- These particles are in whole or in majority in a sinterable material, that is to say a material which is able to diffuse from one particle to an adjacent particle when the particles are kept in contact with each other at high temperature. for a while, so that links are created between the particles.
- the material is then sintered.
- the abradable material 50 may further comprise particles (organic, inorganic, metallic, intermetallic, etc.) which will transform to form gas bubbles or which will have poor adhesion by diffusion. Thus, these particles facilitate the stall of abradable pieces to the passage of the movable elements to better reduce the clearance between these elements and the surface of the abradable on which the elements come to rub.
- particles organic, inorganic, metallic, intermetallic, etc.
- a part 10 which has one or more housings 20.
- This or these housings 20 are cavities formed in the part 10, and which open on a free surface 15 of the part 10.
- These housings 20 are for example grooves, or depressions.
- a housing 20 thus has at least one opening 15 at an outer surface of the part.
- This opening 15 is continuous. It can also be discontinuous, that is to say composed of several sub-openings.
- This piece 10 is in its final or near-final form.
- final shape we mean a piece already shaped and machined closer to the final dimensions.
- quasi-final form means a piece already formatted, before its machining closer to the final dimensions.
- this part 10 is a turbomachine casing, and the movable elements are blades.
- the invention applies to any part 10 having at least one housing 20 as described above.
- Such a part (housing) 10 is shown in section in FIG. 1A.
- the free surface 15 on which opens the opening 25 of the housing 20 is the radially inner face of the housing 10 which is a shell centered on an axis.
- the housing 20 is a dovetail-shaped groove which extends in a direction perpendicular to the cutting plane.
- the housing 20 may also be of any shape.
- the maximum section of the housing 20 in a plane parallel to the free surface 15 may be at a non-zero distance from the free surface 15.
- the bottom of the housing 20 (the furthest part of the free surface 15) has a maximum section.
- the housing 20 has at least one convergent portion approximating the opening 25. In this way, the abradable material 25 which fills the housing 20 (see below), once forming a block in one piece , is mechanically held in the housing 20.
- the opening 25 is closed with a sheath 30 (step (a) of the process).
- FIG. 1B illustrates this step.
- This sheath 30 is made of a sufficiently flexible or ductile material and with a thickness sufficiently small to deform under the effect of the pressure P which will be applied at a subsequent stage at a certain temperature and for a certain duration (see below). .
- the sheath 30 closes the opening 25 sealingly except for a vacuum port 31 and a filling port 32.
- edges of the sheath 30 are secured to the free surface 15 over the entire periphery of the opening 25.
- This fixing is, for example, performed by welding.
- the sheath has a vacuum port 31 and a filling port 32.
- One and / or the other of these orifices may be continuous, or discontinuous, that is to say composed of several disjoint sub-orifices.
- the housing 20 is filled with the abradable material 50 using the filling port 32, and the housing 20 is evacuated using the vacuum port 31 (process step (b)). For example, first fill the housing 20, then it evacuates. Alternatively, the housing 20 is filled and evacuated simultaneously.
- abradable material 50 is in the form of a set of disjoint particles allows this filling.
- the filling can be performed simultaneously with the creation of the vacuum housing 20, which reduces the total time of the process.
- step (c) of the process illustrates this step.
- the volume defined by the wall of the housing 20 and the sheath 30, called initial volume, is strictly greater than the volume of the housing 20, the volume of the housing 20 being defined by the wall of the housing 20 and a plane which is located in the extension of the free surface 15 on which opens the opening 25.
- a pressure P greater than the atmospheric pressure is then applied to the outer face of the sheath 30.
- the sheath 30 is deformed under the effect of a unidirectional stress normal to its surface, and the sheath 30 subjects the abradable material 50 to one deformation in the housing 20 (the abradable material 50 being constrained by the wall of the housing 20), while heating the abradable material 50 to a temperature above 150 ° C until sintering occurs between the particles of the abradable material 50 (step (d) of the process).
- Figure 1D illustrates this step.
- the abradable material 50 is sintered and occupies a volume (called the final volume) which is smaller than the initial volume, due to the compaction and sintering that took place between the particles of the abradable material 50 .
- the temperature and pressure are then lowered to room temperature and ambient pressure respectively, and the sheath 30 is removed (step (e) of the process).
- the final volume may be greater than the volume of the housing 20.
- the abradable material 50 may form a bulge beyond the free surface 15.
- the surface 55 is the free surface of the abradable material which gives on the outside of the part 10 (in the case where the part 10 is a housing, the surface 55 gives on the internal space of the housing).
- the surface 55 of the abradable material 50 can be machined at the opening 25 so that the surface 55 after machining is substantially in line with the free surface 15 of the part 10.
- FIG. 1E illustrates this step (step (f) of the method).
- a blade (shown dashed in Figure 1E) is positioned so that its end rubs against the surface 55, and the gas leak at the end of the blade is minimized.
- the surface 55 after machining is in the extension of the free surface 15.
- the housing 20 is filled with a plurality of layers of abradable materials 50, each layer being different in nature from an adjacent layer.
- two layers of different nature means a layer made of a material different from another layer, or a layer consisting of a mixture of several materials and another layer consisting of the mixture of the same materials but in different proportions.
- the layers do not have the same properties.
- FIG. 2 This situation is illustrated in FIG. 2 in the case of two layers.
- a portion of the housing 20 is filled with a first abradable material 51 which forms a first layer, and then the remainder of the housing 20 is filled with a second abradable material 52 which forms a second layer.
- step (d) the following steps are performed:
- the abradable material 50 is heated until each of its points is at a temperature T1 greater than 150 ° C. while exerting an isostatic compression of the sheath 30 so that it is exerted on the sheath A pressure P,
- the duration of the step (k2) may be low, less than 5 minutes, or even zero because the sintering of all the particles of the abradable material 50 may have occurred during the rise in temperature during the step (kl).
- the assembly consisting of the part 10, the sheath 30 and the abradable material 50 in a chamber filled with gas.
- This method has the advantage that the part 10 does not deform substantially during the process according to the invention.
- the temperature T1 may be greater than the temperature at which a maximum of the porosities of the abradable material 50 is resorbed.
- the adhesion of the particles of abradable material 50 to the surface of the wall of the housing 20 is improved. There is therefore less subsequent detachment of the abradable material 50.
- the filling of the housing 20 with the particles of abradable material 50 is also more efficient, which allows for a complex shaped housing with recesses and protuberances.
- the adhesion in use between the wall of the housing 20 and the abradable material is further improved.
- the temperature T1 is greater than 500 ° C.
- a part 10 comprising a first solid continuous part made of a first material, and a second part made of a second distinct material, this second part initially being in powder form and intended to be secured to this first part by compression isostatic hot, it is possible to carry out isostatic hot pressing of this second part simultaneously and the hot isostatic pressing of the abradable material 50.
- the housing 20 is then located in the first part of the part 10.
- the part 10 is a casing
- the first part is made of steel
- the second part is initially a titanium alloy powder, which forms at the end of the isostatic compression a continuous solid part made of titanium alloy.
- step (d) the following steps are performed:
- the abradable material 50 is heated until each of its points is at a temperature T2 of between 150 ° C. and 500 ° C.
- Steps (ml) and (m2) constitute a warm hydroforming.
- the duration of the step (m3) may be low, less than 5 minutes, or even zero because the sintering of all the particles of the abradable material 50 may have occurred during the rise in temperature during the step (ml) or during steps (ml) and (m2).
- the rigid enclosure is stiffer than the sheath 30 so that the sheath 30 deforms during the process.
- the part 10 can be placed in a rigid mold 70 which does not cover the enclosure 60, so that the deformation of the part 10 during the steps (m2) and (m3) is minimized.
- the mold 70 is more rigid than the part 10.
- the sintering of the abradable material 50 is more efficient (better particle compaction and fewer residual porosities, and better cohesion of the particles) and faster compared to the processes of the art. previous thanks preheating and compressing the abradable material 50 (steps (ml) and (m2)).
- the adhesion of the particles of abradable material 50 to the surface of the wall of the housing 20 is improved. There is therefore less subsequent detachment of the abradable material 50.
- the temperature T3 may be greater than the temperature at which a maximum of the porosities of the abradable material 50 is resorbed.
- the filling of the housing 20 with the particles of abradable material 50 is also more efficient, which allows for a complex shaped housing with recesses and protuberances.
- the temperature T3 is greater than 500 ° C.
- a part 10 comprising a first solid continuous part made of a first material, and a second part made of a second distinct material, this second part initially being at least partially in the form of powder and being intended to be secured to this first material part by warm hydroforming followed by sintering, it is possible to perform simultaneous hydroforming followed by sintering of this second part and warm hydroforming followed by sintering of the abradable material 50.
- the part 10 is a casing, the first part is made of steel, the second part is initially a titanium alloy powder, which forms at the end of the warm hydroforming followed by sintering a continuous solid part in titanium alloy.
- the part 10 is a housing, the first part consists of one or more materials, and the second part is a composite layer made of titanium fibers in a matrix in powder form.
- the second part will form a continuous solid part reinforced by titanium fibers.
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- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Mechanical Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Composite Materials (AREA)
- Materials Engineering (AREA)
- Turbine Rotor Nozzle Sealing (AREA)
- Powder Metallurgy (AREA)
Abstract
Description
Claims
Priority Applications (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB1507630.0A GB2521976B (en) | 2012-10-05 | 2013-09-30 | Method for incorporating abradable material into a housing by isostatic pressing |
US14/433,586 US9943908B2 (en) | 2012-10-05 | 2013-09-30 | Method for incorporating abradable material into a housing by isostatic pressing |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR1259511 | 2012-10-05 | ||
FR1259511A FR2996474B1 (fr) | 2012-10-05 | 2012-10-05 | Procede pour l'integration de materiau abradable dans un logement par compression isostatique |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2014053754A1 true WO2014053754A1 (fr) | 2014-04-10 |
Family
ID=47557220
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/FR2013/052316 WO2014053754A1 (fr) | 2012-10-05 | 2013-09-30 | Procede pour l'integration de materiau abradable dans un logement par compression isostatique |
Country Status (4)
Country | Link |
---|---|
US (1) | US9943908B2 (fr) |
FR (1) | FR2996474B1 (fr) |
GB (1) | GB2521976B (fr) |
WO (1) | WO2014053754A1 (fr) |
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR3044946A1 (fr) * | 2015-12-14 | 2017-06-16 | Snecma | Revetement abradable a densite variable |
FR3044945A1 (fr) * | 2015-12-14 | 2017-06-16 | Snecma | Revetement abradable a densite variable |
US9943908B2 (en) | 2012-10-05 | 2018-04-17 | Safran Aircraft Engines | Method for incorporating abradable material into a housing by isostatic pressing |
FR3082765A1 (fr) * | 2018-06-25 | 2019-12-27 | Safran Aircraft Engines | Procede de fabrication d'une couche abradable |
Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US20090297331A1 (en) * | 2008-04-23 | 2009-12-03 | Snecma | Turbomachine casing including a device for preventing instability during contact between the casing and the rotor |
US20120032404A1 (en) * | 2010-08-03 | 2012-02-09 | Dresser-Rand Company | Low deflection bi-metal rotor seals |
Family Cites Families (8)
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US3975165A (en) * | 1973-12-26 | 1976-08-17 | Union Carbide Corporation | Graded metal-to-ceramic structure for high temperature abradable seal applications and a method of producing said |
JPH0717929B2 (ja) * | 1987-12-07 | 1995-03-01 | 株式会社神戸製鋼所 | 粉末原料の熱間静水圧加圧成形方法と熱間静水圧加圧成形用容器 |
JPH0717929A (ja) | 1993-06-30 | 1995-01-20 | Mitsui Petrochem Ind Ltd | N,o−ジアルキルヒドロキシルアミンの製造方法 |
US20040261690A1 (en) * | 2003-06-30 | 2004-12-30 | Ivy Malcolm N. | Method of making optical fluoride crystal feedstock |
US20070092394A1 (en) * | 2005-10-26 | 2007-04-26 | General Electric Company | Supersolvus hot isostatic pressing and ring rolling of hollow powder forms |
FR2996254B1 (fr) | 2012-10-03 | 2014-09-12 | Snecma | Methode de surveillance d'un defaut de poussee d'un turboreacteur d'aeronef |
FR2996474B1 (fr) | 2012-10-05 | 2014-12-12 | Snecma | Procede pour l'integration de materiau abradable dans un logement par compression isostatique |
FR2996476B1 (fr) * | 2012-10-05 | 2015-02-13 | Snecma | Procede de fabrication d'une piece couverte d'un revetement abradable |
-
2012
- 2012-10-05 FR FR1259511A patent/FR2996474B1/fr active Active
-
2013
- 2013-09-30 GB GB1507630.0A patent/GB2521976B/en active Active
- 2013-09-30 US US14/433,586 patent/US9943908B2/en active Active
- 2013-09-30 WO PCT/FR2013/052316 patent/WO2014053754A1/fr active Application Filing
Patent Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US20090297331A1 (en) * | 2008-04-23 | 2009-12-03 | Snecma | Turbomachine casing including a device for preventing instability during contact between the casing and the rotor |
US20120032404A1 (en) * | 2010-08-03 | 2012-02-09 | Dresser-Rand Company | Low deflection bi-metal rotor seals |
Cited By (11)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US9943908B2 (en) | 2012-10-05 | 2018-04-17 | Safran Aircraft Engines | Method for incorporating abradable material into a housing by isostatic pressing |
FR3044946A1 (fr) * | 2015-12-14 | 2017-06-16 | Snecma | Revetement abradable a densite variable |
FR3044945A1 (fr) * | 2015-12-14 | 2017-06-16 | Snecma | Revetement abradable a densite variable |
WO2017103422A1 (fr) * | 2015-12-14 | 2017-06-22 | Safran Aircraft Engines | Revêtement abradable a densité variable |
WO2017103420A1 (fr) * | 2015-12-14 | 2017-06-22 | Safran Aircraft Engines | Revetement abradable a densite variable. |
CN108367360A (zh) * | 2015-12-14 | 2018-08-03 | 赛峰航空器发动机 | 具有可变密度的耐磨损涂层 |
RU2728166C2 (ru) * | 2015-12-14 | 2020-07-28 | Сафран Эркрафт Энджинз | Истираемое покрытие переменной плотности |
US11174749B2 (en) | 2015-12-14 | 2021-11-16 | Safran Aircraft Engines | Abradable coating having variable densities |
FR3082765A1 (fr) * | 2018-06-25 | 2019-12-27 | Safran Aircraft Engines | Procede de fabrication d'une couche abradable |
WO2020002799A1 (fr) * | 2018-06-25 | 2020-01-02 | Safran Aircraft Engines | Procede de fabrication d'une couche abradable |
US12129553B2 (en) | 2018-06-25 | 2024-10-29 | Safran Aircraft Engines | Method for manufacturing an abradable layer |
Also Published As
Publication number | Publication date |
---|---|
FR2996474B1 (fr) | 2014-12-12 |
GB2521976A (en) | 2015-07-08 |
US9943908B2 (en) | 2018-04-17 |
GB201507630D0 (en) | 2015-06-17 |
GB2521976B (en) | 2017-02-08 |
US20150266093A1 (en) | 2015-09-24 |
FR2996474A1 (fr) | 2014-04-11 |
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