EP3003600A1 - Preforme d'aube de turbomachine - Google Patents
Preforme d'aube de turbomachineInfo
- Publication number
- EP3003600A1 EP3003600A1 EP14733252.2A EP14733252A EP3003600A1 EP 3003600 A1 EP3003600 A1 EP 3003600A1 EP 14733252 A EP14733252 A EP 14733252A EP 3003600 A1 EP3003600 A1 EP 3003600A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- upstream
- preform
- blade
- downstream
- mold
- 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
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22C—FOUNDRY MOULDING
- B22C9/00—Moulds or cores; Moulding processes
- B22C9/10—Cores; Manufacture or installation of cores
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22C—FOUNDRY MOULDING
- B22C9/00—Moulds or cores; Moulding processes
- B22C9/06—Permanent moulds for shaped castings
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22C—FOUNDRY MOULDING
- B22C9/00—Moulds or cores; Moulding processes
- B22C9/22—Moulds for peculiarly-shaped castings
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
- B22D25/00—Special casting characterised by the nature of the product
- B22D25/02—Special casting characterised by the nature of the product by its peculiarity of shape; of works of art
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01D—NON-POSITIVE DISPLACEMENT MACHINES OR ENGINES, e.g. STEAM TURBINES
- F01D5/00—Blades; Blade-carrying members; Heating, heat-insulating, cooling or antivibration means on the blades or the members
- F01D5/12—Blades
- F01D5/14—Form or construction
- F01D5/141—Shape, i.e. outer, aerodynamic form
-
- 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
- F05D2230/21—Manufacture essentially without removing material by casting
-
- 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
- F05D2230/60—Assembly methods
- F05D2230/61—Assembly methods using limited numbers of standard modules which can be adapted by machining
Definitions
- the invention relates to a turbomachine blade preform, such as in particular a turbine blade preform in a turbomachine, and a mold and a method for obtaining the blade preform.
- the turbine blades are monoblock pieces obtained from foundry by means of a mold comprising a cavity whose three-dimensional shape makes it possible to obtain the desired shape by complementarity.
- the part obtained after the molding step consists of a blade preform that is necessary to machine to give it the desired shapes and final dimensions.
- a turbine blade preform comprises a stilt connecting a blade root to a platform.
- the blade preform also comprises two transverse upstream and downstream sails formed at the upstream and downstream ends of the stilt and connecting the upstream and downstream edges of the platform to the upstream and downstream ends of the blade root, respectively.
- upstream and downstream are to be considered with respect to a general direction of flow of an upstream fluid downstream around the blade when it is mounted in a turbomachine.
- each blade vane Viewed in an upstream / downstream direction, each blade vane has side edges connected to the sidewalls of the blade root through concave curved walls extending towards each other and forming an area of the blade. throttling whose width measured in a transverse direction is less than that of the blade root.
- a throttling zone at the junction between each sail and the blade root limits the time required for the final machining of the blade root.
- the mold must also comprise corresponding throttling zones.
- the present invention provides a simple, effective and economical solution to these problems.
- a turbomachine blade preform comprising a stilt connecting a platform to a part of the blade root extending longitudinally along an upstream / downstream direction, two upstream and downstream sails. extending in a direction substantially perpendicular to the longitudinal direction of the blade root and being formed at the upstream and downstream ends of the stilt, these upstream and downstream sails connecting the upstream and downstream ends of the platform to the upstream and downstream ends of the blade root, characterized in that the blade root extends in a direction perpendicular to the longitudinal direction of the blade root a distance less than that of the upstream and downstream sails and in that the lateral edges of each veil are extended by walls converging towards each other up to the sides of the foot of dawn.
- said convergent walls are formed by flat faces inclined with respect to a median plane of the blade root extending longitudinally along an upstream / downstream direction.
- the aforementioned faces are inclined at an angle of approximately 45 ° with respect to the median plane.
- the invention also relates to a mold for the manufacture of a foundry blade preform as described above, comprising an internal cavity whose three-dimensional shape determines by complementarity the three-dimensional shape of the blade preform, the mold comprising at least two first and two second blocks arranged in pairs facing each other along perpendicular axes, the first two impression blocks each comprising an imprint comprising a boss intended to delimit the internal surface of a platform of the preform the dawn and defining with impressions of the second blocks impressed spaces for forming upstream and downstream side sails connecting upstream and downstream edges of a platform of the blade preform at the upstream and downstream ends of a dawn foot, the first impression block also comprising substantially parallel vis-à-vis faces intended to form flanks of a part of the foot of the prefo blade, characterized in that the footprint of each first block comprises first and second surfaces on either side of the boss connected to the side
- first and second converging surfaces avoids the formation of a throttling zone in the connection zones of the side veils at the blade root, which limits the formation of defects in these places.
- the invention further relates to a method of manufacturing a turbine blade using the mold described above, comprising:
- FIG. 1 is a schematic view of a preform of turbomachine blade according to the prior art
- FIG. 2 is a view from the upstream of the zone delimited in dashed line in FIG. 1;
- FIG. 3 is a schematic perspective view of a turbomachine blade preform according to the invention.
- FIGS. 4 to 6 are diagrammatic representations in perspective of a plurality of blocks impressed with a tool for producing a preform according to the invention
- FIG. 7 is a view from upstream showing simultaneously and in superposition a turbine blade preform according to the invention and a turbomachine blade obtained after machining of the preform;
- FIG. 8 is a schematic perspective view simultaneously showing and superimposed a turbine blade preform according to the invention and a turbomachine blade obtained after machining of the preform.
- FIG. 1 shows a monobloc turbomachine blade preform 10 according to the prior art obtained by molding in a mold and comprising along an axis 12 a blade root portion 14 extending longitudinally in an upstream / downstream direction and having in cross section a substantially rectangular shape, a platform 16, a blade 18 and a blade heel 20.
- the contour of the foot forms a U, the branches of the U being substantially parallel and being formed by the flanks 42 of the blade root.
- Dawn represented in FIG. 1 represents more particularly a blade mounted in a turbine of the turbomachine.
- the mold 22 comprises an internal cavity 24 whose three-dimensional shape is determined so that by filling the mold with liquid material the desired three-dimensional shape of the blade preform 10 is obtained.
- the liquid material is injected into the mold. the mold 22 from a lower portion 23 of the mold 12 corresponding to that to obtain the heel 20 of the blade.
- the liquid material progressively fills the mold (arrow A) to an upper part 25 of the mold corresponding to that making it possible to obtain a blade root portion 14.
- the mold 22 is shown in the inverted position relative to its position of use.
- FIG. 2 represents the part delimited in dotted line in FIG. 1, that is to say the internal part of the blade preform comprising two upstream and downstream sails 28 extending in a direction substantially perpendicular to the longitudinal direction. of the blade root 14, the two upstream and downstream sails 26 connecting the blade root portion 14 to the platform 16 (only the upstream web 26 is shown in FIG. 2, the downstream web 28 being visible on the Figure 3 representing the invention).
- FIG. 2 also shows diagrammatically two cavity blocks 30, 32 of the mold 22, arranged facing each other and each comprising a projecting portion 34 towards each other, these parts 34 comprising curved surfaces.
- convex means 36 making it possible to form, by complementary shape, concave curved walls 38 connecting the lateral edges 40 of the webs 26, 28 to the blade root part 14.
- this type of blade preform may present mechanical defects such as cracks, at the connection areas 38 of the webs 26, 28 to the flanks 42 of the foot portion 14 of the blade preform 10 of the makes the presence of a throttling zone in the mold between the two parts 34 slowing down material flow (arrow A).
- the invention thus proposes to modify the connection areas of the lateral edges of the webs 26, 28 to the flanks 42 of the blade root by extending the lateral edges 40 of the webs by walls 44 converging towards each other until flanks 42 of the blade root 14 as shown in Figure 3.
- the blade root 14 thus extends in a direction substantially perpendicular to the longitudinal direction upstream / downstream of the blade root a distance less than that of the upstream sails 26 and downstream 28.
- the blade preform 46 no longer includes a throttling zone, which greatly reduces the risk of defects forming at the junction of the webs 26, 28 with the part of the blade. dawn foot 14.
- the walls 44 are formed by flat surfaces inclined at an angle of approximately 45 ° with respect to a median plane of the blade root extending from upstream to downstream; - ie a plane extending longitudinally and passing through the middle of the blade root 14.
- the walls may be curved concave or convex while converging towards the flanks of the blade root.
- This mold comprises two first 50A, 52A and two second 54A, 56A impression blocks arranged in pairs in two screws along perpendicular axes 58, 60 ( Figure 4).
- Each impression block 50A, 52A, 54A, 56A comprises a recess 50B, 52B, 54B, 56B delimiting after assembly of the impression blocks 50A, 52A, 54A, 56A a cavity intended to complementarily form a portion of the blade preform. 46 turbine.
- the 50B footprint of the block 50A includes a boss 50C an outer surface 50D is arranged with play vis-à-vis an outer surface 52D of a boss 52C corresponding to the cavity 52B of the block 52A so as to form the stilt of the preform 46
- Each outer surface 50D, 52D of a boss 50C, 52C is connected to the remainder of the recess 50B, 52B by a periphery whose upper surface 50E is intended to delimit an inner face of the platform 16, two lateral surfaces.
- 50F are intended to form with the cavities 54B, 56B second impression blocks 54A, 56A the upstream and downstream lateral sails 26 of the blade preform 46.
- the boss 50C, 52C of each recess 50B, 52B of a first block protrudes from a surface 50G intended to form the lateral edges of the platform 16 as well as the lateral edges 40 of the upstream and downstream sails 26 of the platform 16.
- This surface 50G is connected to a first 50H and a second 50I surfaces extending on either side of the boss 50D and intended to form the connection zones according to the invention at the foot of dawn 14.
- the first surfaces 50H, 52H of the impressions 50B, 52B converge towards each other in an oriented direction of the blade 18 towards the blade root 14.
- the second surfaces 50I, 52I converge towards each other in a direction oriented from the blade towards the dawn foot.
- the first surface 50H, 52H and the second surface 50I, 52H of each impression block 50A, 52A are connected to the same surface 50J, 52J intended to form a flank 42 of a part of the blade root 14. These surfaces of the first impression blocks 50A, 52A forming the aforementioned flanks are substantially parallel.
- the second impression blocks 54A, 56A each comprise a slot 54C intended to form a spoiler 62 extending from a lateral web 26, 28 of the blade preform 46 and opposite the platform 16 relative to in the veil.
- a machining operation of the preform is carried out so as to obtain a turbine blade 64 with the desired dimensions.
- machining of the part of the blade root and the connection areas of the side sails to the part of the blade root so as to achieve a blade root dovetail 66 capable of being engaged axially and retained radially in a cell of a turbine disk in a well known manner.
- the machining step also involves machining the side edges of the platform.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- General Engineering & Computer Science (AREA)
- Turbine Rotor Nozzle Sealing (AREA)
- Molds, Cores, And Manufacturing Methods Thereof (AREA)
Description
Claims
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FR1355177A FR3006616B1 (fr) | 2013-06-05 | 2013-06-05 | Preforme d'aube de turbomachine |
| PCT/FR2014/051324 WO2014195634A1 (fr) | 2013-06-05 | 2014-06-04 | Preforme d'aube de turbomachine |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| EP3003600A1 true EP3003600A1 (fr) | 2016-04-13 |
| EP3003600B1 EP3003600B1 (fr) | 2017-08-02 |
Family
ID=49212802
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP14733252.2A Active EP3003600B1 (fr) | 2013-06-05 | 2014-06-04 | Preforme d'aube de turbomachine |
Country Status (9)
| Country | Link |
|---|---|
| US (1) | US9833834B2 (fr) |
| EP (1) | EP3003600B1 (fr) |
| JP (1) | JP6549103B2 (fr) |
| CN (1) | CN105263650B (fr) |
| BR (1) | BR112015029844B1 (fr) |
| CA (1) | CA2912924C (fr) |
| FR (1) | FR3006616B1 (fr) |
| RU (1) | RU2660436C2 (fr) |
| WO (1) | WO2014195634A1 (fr) |
Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR3052088B1 (fr) * | 2016-06-02 | 2018-06-22 | Safran | Moule pour la fabrication d'une aube monocristalline par fonderie, installation et procede de fabrication le mettant en oeuvre |
| CN106077506B (zh) * | 2016-08-11 | 2019-06-07 | 山东豪迈机械科技股份有限公司 | 一种叶片铸造模具及其应用及叶片成型方法 |
| FR3090032B1 (fr) * | 2018-12-12 | 2021-01-29 | Safran Aircraft Engines | Aube pour roue de turbomachine |
| CN116000565B (zh) * | 2022-12-08 | 2025-10-24 | 中国航发南方工业有限公司 | 锯齿形叶冠涡轮叶片防护夹具的制备方法及其防护夹具 |
| FR3148058B1 (fr) * | 2023-04-20 | 2026-01-30 | Safran | Ebauche d’aube de turbomachine obtenue par coulée de métal et procédé de fabrication d’une telle ébauche. |
Family Cites Families (20)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2028928B (en) * | 1978-08-17 | 1982-08-25 | Ross Royce Ltd | Aerofoil blade for a gas turbine engine |
| DE3862891D1 (de) * | 1987-05-04 | 1991-06-27 | Siemens Ag | Verfahren zum herstellen von profilteilen durch schleifen und entsprechend hergestellte turbomaschinenschaufel. |
| JP3395019B2 (ja) * | 1994-03-10 | 2003-04-07 | 株式会社日立製作所 | ガスタービン用単結晶ブレードの製造法 |
| US6186867B1 (en) * | 1996-04-30 | 2001-02-13 | United Technologies Corporation | Method for manufacturing precisely shaped parts |
| US5673745A (en) * | 1996-06-27 | 1997-10-07 | General Electric Company | Method for forming an article extension by melting of an alloy preform in a ceramic mold |
| JPH09144502A (ja) * | 1996-08-02 | 1997-06-03 | Hitachi Ltd | ガスタービンブレード及びその製造方法並びにガスタービン |
| JPH10131705A (ja) * | 1996-10-31 | 1998-05-19 | Toshiba Corp | タービン翼およびその製造方法 |
| JPH11828A (ja) * | 1997-06-06 | 1999-01-06 | United Technol Corp <Utc> | 精度の高い形状の部品を製造するための固定装置 |
| DE10064268A1 (de) * | 2000-12-22 | 2002-07-04 | Alstom Switzerland Ltd | Werkzeug und Verfahren zum Giessen eines Formteils für die Herstellung einer Turbinenschaufel |
| FR2861128B1 (fr) * | 2003-10-16 | 2007-06-08 | Snecma Moteurs | Dispositif d'attache d'une aube mobile sur un disque de rotor de turbine dans un turbomachine |
| US7144220B2 (en) * | 2004-07-30 | 2006-12-05 | United Technologies Corporation | Investment casting |
| FR2878458B1 (fr) * | 2004-11-26 | 2008-07-11 | Snecma Moteurs Sa | Procede de fabrication de noyaux ceramiques de fonderie pour aubes de turbomachines, outil pour la mise en oeuvre du procede |
| DE102004062174A1 (de) * | 2004-12-17 | 2006-06-22 | Rolls-Royce Deutschland Ltd & Co Kg | Verfahren zur Herstellung von hoch belastbaren Bauteilen durch Präzisionsschmieden |
| FR2923524B1 (fr) * | 2007-11-12 | 2013-12-06 | Snecma | Aube metallique fabriquee par moulage et procede de fabrication de l'aube |
| US20090324841A1 (en) * | 2008-05-09 | 2009-12-31 | Siemens Power Generation, Inc. | Method of restoring near-wall cooled turbine components |
| US8137072B2 (en) * | 2008-10-31 | 2012-03-20 | Solar Turbines Inc. | Turbine blade including a seal pocket |
| US9033673B2 (en) * | 2010-06-28 | 2015-05-19 | Herakles | Turbomachine blade or vane having complementary asymmetrical geometry |
| FR2985923B1 (fr) * | 2012-01-24 | 2016-02-05 | Snecma | Carapace pour la fabrication par moulage a cire perdue d'elements aubages de turbomachine d'aeronef, comprenant des bras de coulee inclines |
| FR2990462B1 (fr) * | 2012-05-14 | 2014-05-30 | Snecma | Dispositif d'attache d'aubes sur un disque de rotor de turbomachine |
| US9863249B2 (en) * | 2012-12-04 | 2018-01-09 | Siemens Energy, Inc. | Pre-sintered preform repair of turbine blades |
-
2013
- 2013-06-05 FR FR1355177A patent/FR3006616B1/fr active Active
-
2014
- 2014-06-04 EP EP14733252.2A patent/EP3003600B1/fr active Active
- 2014-06-04 JP JP2016517659A patent/JP6549103B2/ja active Active
- 2014-06-04 US US14/895,777 patent/US9833834B2/en active Active
- 2014-06-04 RU RU2015149780A patent/RU2660436C2/ru active
- 2014-06-04 BR BR112015029844A patent/BR112015029844B1/pt active IP Right Grant
- 2014-06-04 WO PCT/FR2014/051324 patent/WO2014195634A1/fr not_active Ceased
- 2014-06-04 CA CA2912924A patent/CA2912924C/fr active Active
- 2014-06-04 CN CN201480031543.8A patent/CN105263650B/zh active Active
Non-Patent Citations (1)
| Title |
|---|
| See references of WO2014195634A1 * |
Also Published As
| Publication number | Publication date |
|---|---|
| RU2015149780A (ru) | 2017-07-13 |
| US9833834B2 (en) | 2017-12-05 |
| JP2016526129A (ja) | 2016-09-01 |
| CA2912924A1 (fr) | 2014-12-11 |
| EP3003600B1 (fr) | 2017-08-02 |
| BR112015029844A2 (pt) | 2017-07-25 |
| FR3006616B1 (fr) | 2016-03-04 |
| US20160129497A1 (en) | 2016-05-12 |
| RU2660436C2 (ru) | 2018-07-06 |
| CN105263650A (zh) | 2016-01-20 |
| FR3006616A1 (fr) | 2014-12-12 |
| WO2014195634A1 (fr) | 2014-12-11 |
| JP6549103B2 (ja) | 2019-07-24 |
| CN105263650B (zh) | 2017-07-25 |
| CA2912924C (fr) | 2021-06-08 |
| RU2015149780A3 (fr) | 2018-03-28 |
| BR112015029844B1 (pt) | 2020-01-14 |
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