US20050100442A1 - Method of soldering a compressor nozzle ring of a gas turbine - Google Patents
Method of soldering a compressor nozzle ring of a gas turbine Download PDFInfo
- Publication number
- US20050100442A1 US20050100442A1 US10/951,660 US95166004A US2005100442A1 US 20050100442 A1 US20050100442 A1 US 20050100442A1 US 95166004 A US95166004 A US 95166004A US 2005100442 A1 US2005100442 A1 US 2005100442A1
- Authority
- US
- United States
- Prior art keywords
- inner shroud
- blades
- shroud
- parts
- aluminium alloy
- 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.)
- Abandoned
Links
- 238000000034 method Methods 0.000 title claims description 24
- 238000005476 soldering Methods 0.000 title claims description 14
- 229910052751 metal Inorganic materials 0.000 claims abstract description 24
- 239000002184 metal Substances 0.000 claims abstract description 24
- 229910000838 Al alloy Inorganic materials 0.000 claims abstract description 15
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 claims abstract description 13
- 239000000945 filler Substances 0.000 claims abstract description 13
- 239000010936 titanium Substances 0.000 claims abstract description 13
- 229910052719 titanium Inorganic materials 0.000 claims abstract description 13
- FYYHWMGAXLPEAU-UHFFFAOYSA-N Magnesium Chemical compound [Mg] FYYHWMGAXLPEAU-UHFFFAOYSA-N 0.000 claims abstract description 11
- 229910052749 magnesium Inorganic materials 0.000 claims abstract description 11
- 239000011777 magnesium Substances 0.000 claims abstract description 11
- 229910052710 silicon Inorganic materials 0.000 claims abstract description 10
- 239000010703 silicon Substances 0.000 claims abstract description 10
- 229910000679 solder Inorganic materials 0.000 claims description 7
- 229910045601 alloy Inorganic materials 0.000 claims description 6
- 239000000956 alloy Substances 0.000 claims description 6
- 239000004411 aluminium Substances 0.000 claims description 6
- 229910052782 aluminium Inorganic materials 0.000 claims description 6
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims description 6
- 229910052720 vanadium Inorganic materials 0.000 claims description 3
- LEONUFNNVUYDNQ-UHFFFAOYSA-N vanadium atom Chemical compound [V] LEONUFNNVUYDNQ-UHFFFAOYSA-N 0.000 claims description 3
- 239000007789 gas Substances 0.000 description 7
- 150000002739 metals Chemical class 0.000 description 3
- 229920002379 silicone rubber Polymers 0.000 description 3
- 229910001069 Ti alloy Inorganic materials 0.000 description 2
- 239000000853 adhesive Substances 0.000 description 2
- 230000001070 adhesive effect Effects 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 230000000295 complement effect Effects 0.000 description 1
- 239000000470 constituent Substances 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 229920001971 elastomer Polymers 0.000 description 1
- 239000000806 elastomer Substances 0.000 description 1
- 238000010894 electron beam technology Methods 0.000 description 1
- 239000003517 fume Substances 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 239000000155 melt Substances 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 230000007935 neutral effect Effects 0.000 description 1
- 239000003921 oil Substances 0.000 description 1
- 239000000843 powder Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
Images
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K1/00—Soldering, e.g. brazing, or unsoldering
- B23K1/0008—Soldering, e.g. brazing, or unsoldering specially adapted for particular articles or work
- B23K1/0018—Brazing of turbine parts
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K1/00—Soldering, e.g. brazing, or unsoldering
- B23K1/19—Soldering, e.g. brazing, or unsoldering taking account of the properties of the materials to be soldered
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K35/00—Rods, electrodes, materials, or media, for use in soldering, welding, or cutting
- B23K35/02—Rods, electrodes, materials, or media, for use in soldering, welding, or cutting characterised by mechanical features, e.g. shape
- B23K35/0222—Rods, electrodes, materials, or media, for use in soldering, welding, or cutting characterised by mechanical features, e.g. shape for use in soldering, brazing
- B23K35/0227—Rods, wires
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K35/00—Rods, electrodes, materials, or media, for use in soldering, welding, or cutting
- B23K35/22—Rods, electrodes, materials, or media, for use in soldering, welding, or cutting characterised by the composition or nature of the material
- B23K35/24—Selection of soldering or welding materials proper
- B23K35/28—Selection of soldering or welding materials proper with the principal constituent melting at less than 950 degrees C
- B23K35/286—Al as the principal constituent
-
- 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
- F01D9/00—Stators
- F01D9/02—Nozzles; Nozzle boxes; Stator blades; Guide conduits, e.g. individual nozzles
- F01D9/04—Nozzles; Nozzle boxes; Stator blades; Guide conduits, e.g. individual nozzles forming ring or sector
- F01D9/042—Nozzles; Nozzle boxes; Stator blades; Guide conduits, e.g. individual nozzles forming ring or sector fixing blades to stators
- F01D9/044—Nozzles; Nozzle boxes; Stator blades; Guide conduits, e.g. individual nozzles forming ring or sector fixing blades to stators permanently, e.g. by welding, brazing, casting or the like
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K2101/00—Articles made by soldering, welding or cutting
- B23K2101/006—Vehicles
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K2103/00—Materials to be soldered, welded or cut
- B23K2103/08—Non-ferrous metals or alloys
- B23K2103/14—Titanium or alloys thereof
-
- 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
- F05D2230/23—Manufacture essentially without removing material by permanently joining parts together
- F05D2230/232—Manufacture essentially without removing material by permanently joining parts together by welding
- F05D2230/237—Brazing
-
- 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
- F05D2300/00—Materials; Properties thereof
- F05D2300/10—Metals, alloys or intermetallic compounds
- F05D2300/12—Light metals
- F05D2300/125—Magnesium
-
- 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
- F05D2300/00—Materials; Properties thereof
- F05D2300/20—Oxide or non-oxide ceramics
- F05D2300/22—Non-oxide ceramics
- F05D2300/222—Silicon
Definitions
- the invention relates to a method of bonding titanium-based metal parts, in particular of the inner shroud and of the blades of a compressor nozzle ring of an aeronautical gas turbine engine.
- EP 1 148 208 A discloses a method of bonding the blades by soldering to the inner shroud of a nozzle ring, but without indicating the constituent materials of the parts and of the solder.
- the solders generally have a sufficiently long service life in the environment mentioned above.
- the prior art does not teach what filler metals to use which are adapted to the soldering of titanium-based metals.
- the object of the invention is to fill this gap, and thus to eliminate the disadvantages of the known method of adhesion by silicone elastomers.
- the invention aims in particular at a method of the type defined in the introduction and provides that this comprises soldering under a gas pressure of less than 1.10 ⁇ 2 Pa using as a filler metal an aluminium alloy containing magnesium and virtually no silicon.
- the mechanical, physical and chemical properties of the bond obtained by the method according to the invention are an improvement on adhesive bonds. Moreover, soldering is less expensive than adhesion both in terms of its material and its implementation.
- the presence of silicon in the filler metal is disadvantageous as it reduces the temperature at which the solder can be used and its resistance to corrosion.
- the invention also relates to a gas turbine compressor nozzle ring comprising a titanium-based inner shroud, an outer shroud and a plurality of titanium-based blades distributed in the circumferential direction and extending radially from the inner shroud to the outer shroud, each blade passing through a corresponding aperture formed in the inner shroud, characterised in that the blades are fixed to the inner shroud by an aluminium-based solder containing magnesium and virtually no silicon, formed in particular by the method above.
- FIG. 1 is a partial view in axial section of a stage of an aeronautical gas turbine engine compressor nozzle ring, showing one blade connected to the inner shroud by the method according to the invention.
- FIG. 2 is a detail in section showing an aluminium alloy wire positioned with a view to soldering the blade to the inner shroud.
- FIG. 3 is a view similar to FIG. 2 showing the assembly obtained after soldering.
- shroud 1 and the blade 3 are shown diagrammatically in the form of plane plates of uniform thickness.
- the nozzle ring stage partially shown comprises, conventionally, an inner shroud 1 and an outer shroud 2 , both fixed, and a series of rectifying blades 3 extending in a generally radial direction from the inner shroud to the outer shroud.
- the blades 3 are distributed in the circumferential direction, generally in a uniform manner.
- the inner shroud 1 is pierced with apertures 4 whose shape is adapted to the profile of the blades.
- Each aperture is traversed by a blade 3 , one end region 5 of which projects in the axial direction of the engine beyond the aperture 4 and consequently beyond the inner face 6 of the shroud 1 .
- the blades 3 are fixed to the outer shroud 2 e.g. by electron-beam soldering.
- the blades 3 are fixed to the inner shroud 1 by solders 7 formed by using as a filler metal an aluminium alloy containing 0.5 to 8% magnesium by mass and virtually no silicon.
- the aluminium alloy is realised as a wire of a diameter of about 2 mm.
- the blades 3 are inserted into the apertures 4 formed in the wall of the inner shroud 1 and adapted to the transverse cross-section of the blades, in such a manner that an assembly gap or clearance 9 of a width of 0.35 mm is left around the blades between their surface and the opposite surface of the apertures 4 .
- An end region 5 of each blade projects in the axial direction of the engine beyond the inner face 6 of the shroud 1 .
- a wire 8 made of an aluminium-based alloy containing 5% magnesium and less than 0.3% silicon by mass and having a diameter of 2 mm is placed folded into a U around the region 5 , so as to come into contact with the opposite faces thereof and with the face 6 of the shroud, as is shown in FIG. 2 .
- the assembly thus obtained is placed in a vacuum furnace wherein the pressure is reduced to below 1.10 ⁇ 2 Pa. Then the following heating cycle is applied:
- the metal forming the wire 8 melts and penetrates by capillary action into the assembly gap or clearance 9 , which it fills to form upon cooling a solder 7 , which forms joining radii 10 on each side of the shroud and the blade.
- the filler metal can be realised in a form other than a wire, e.g. in the form of a strip, powder or paste, and can then be placed in the gap 9 , preferably overflowing on the inside and/or outside of the shroud 1 .
- the titanium-based metal forming the parts to be soldered may have a different composition from that of the alloy TA6V.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Materials Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Structures Of Non-Positive Displacement Pumps (AREA)
Abstract
Description
- The invention relates to a method of bonding titanium-based metal parts, in particular of the inner shroud and of the blades of a compressor nozzle ring of an aeronautical gas turbine engine.
- Currently, the fixing of the titanium-alloy blades of a nozzle ring to the titanium-alloy inner shroud is effected by adhesion using cold-vulcanised silicone elastomers. The service life of these elastomers decreases when the operating temperature of the compressor increases. Thus, for new-generation compressors operating at temperatures close to 300° C. continuously in an atmosphere containing oil fumes, the silicone elastomer-based adhesives suffer embrittlement that limits their useful service life to 100 hours.
- Furthermore, EP 1 148 208 A discloses a method of bonding the blades by soldering to the inner shroud of a nozzle ring, but without indicating the constituent materials of the parts and of the solder. The solders generally have a sufficiently long service life in the environment mentioned above. However, the prior art does not teach what filler metals to use which are adapted to the soldering of titanium-based metals.
- The object of the invention is to fill this gap, and thus to eliminate the disadvantages of the known method of adhesion by silicone elastomers.
- It has been found unexpectedly that commercially available aluminium alloys intended for machine construction or electrical soldering are suitable for soldering titanium-based metals.
- The invention aims in particular at a method of the type defined in the introduction and provides that this comprises soldering under a gas pressure of less than 1.10−2 Pa using as a filler metal an aluminium alloy containing magnesium and virtually no silicon.
- The mechanical, physical and chemical properties of the bond obtained by the method according to the invention are an improvement on adhesive bonds. Moreover, soldering is less expensive than adhesion both in terms of its material and its implementation.
- The presence of silicon in the filler metal is disadvantageous as it reduces the temperature at which the solder can be used and its resistance to corrosion.
- Optional, complementary or alternative features of the invention are given below:
-
- The aluminium alloy contains 0.5 to 8% magnesium by mass.
- The aluminium alloy contains about 5% magnesium by mass.
- The aluminium alloy contains no more than 0.3% silicon by mass.
- The metal parts are composed of a titanium-based alloy containing 5.5 to 6.75% aluminium and 3.5 to 4.5% vanadium by mass.
- The maximum temperature reached by the parts to be soldered during soldering is between about 660 and 670° C.
- The duration of exposure of the parts to be soldered to temperatures of between about 660 and 670° C. is about 10 minutes.
- The filler metal penetrates into an assembly gap or clearance between the parts to be soldered of a width of less than 0.8 mm.
- The filler metal penetrates into a gap between the parts to be soldered of a width of at least 0.05 mm.
- A quantity of filler metal is used which is between 1.5 and 2 times the volume of the said gap.
- The aluminium alloy is applied in the form of a wire.
- The wire has a diameter of about 0.5 to 2.5 mm.
- The metal parts are an inner shroud and a plurality of gas turbine compressor nozzle ring blades, the blades being distributed in the circumferential direction and extending radially from the inner shroud to an outer shroud, each one passing through a corresponding aperture formed in the inner shroud.
- End regions of the blades project radially inwards beyond the inner shroud.
- The wire is placed in contact with the inner face of the inner shroud and along the profile of the blades.
- The invention also relates to a gas turbine compressor nozzle ring comprising a titanium-based inner shroud, an outer shroud and a plurality of titanium-based blades distributed in the circumferential direction and extending radially from the inner shroud to the outer shroud, each blade passing through a corresponding aperture formed in the inner shroud, characterised in that the blades are fixed to the inner shroud by an aluminium-based solder containing magnesium and virtually no silicon, formed in particular by the method above.
- The features and advantages of the invention are explained in more detail in the description below with reference to the attached drawings.
-
FIG. 1 is a partial view in axial section of a stage of an aeronautical gas turbine engine compressor nozzle ring, showing one blade connected to the inner shroud by the method according to the invention. -
FIG. 2 is a detail in section showing an aluminium alloy wire positioned with a view to soldering the blade to the inner shroud. -
FIG. 3 is a view similar toFIG. 2 showing the assembly obtained after soldering. - In
FIGS. 2 and 3 , for greater clarity, the shroud 1 and theblade 3 are shown diagrammatically in the form of plane plates of uniform thickness. - The nozzle ring stage partially shown comprises, conventionally, an inner shroud 1 and an
outer shroud 2, both fixed, and a series of rectifyingblades 3 extending in a generally radial direction from the inner shroud to the outer shroud. Theblades 3 are distributed in the circumferential direction, generally in a uniform manner. The inner shroud 1 is pierced with apertures 4 whose shape is adapted to the profile of the blades. Each aperture is traversed by ablade 3, oneend region 5 of which projects in the axial direction of the engine beyond the aperture 4 and consequently beyond theinner face 6 of the shroud 1. Theblades 3 are fixed to theouter shroud 2 e.g. by electron-beam soldering. - According to the invention, the
blades 3 are fixed to the inner shroud 1 by solders 7 formed by using as a filler metal an aluminium alloy containing 0.5 to 8% magnesium by mass and virtually no silicon. - Advantageously, the aluminium alloy is realised as a wire of a diameter of about 2 mm.
- An embodiment of the invention is given below by way of example for the soldering of blades to an inner shroud of a stage of an aeronautical gas turbine engine compressor nozzle ring, the blades and the inner shroud being made of the alloy TA6V, which is a titanium-based alloy containing 6% aluminium and 4% vanadium by mass.
- The
blades 3 are inserted into the apertures 4 formed in the wall of the inner shroud 1 and adapted to the transverse cross-section of the blades, in such a manner that an assembly gap orclearance 9 of a width of 0.35 mm is left around the blades between their surface and the opposite surface of the apertures 4. Anend region 5 of each blade projects in the axial direction of the engine beyond theinner face 6 of the shroud 1. Awire 8 made of an aluminium-based alloy containing 5% magnesium and less than 0.3% silicon by mass and having a diameter of 2 mm is placed folded into a U around theregion 5, so as to come into contact with the opposite faces thereof and with theface 6 of the shroud, as is shown inFIG. 2 . - The assembly thus obtained is placed in a vacuum furnace wherein the pressure is reduced to below 1.10−2 Pa. Then the following heating cycle is applied:
-
- increase from 20 to 400° C. at 7° C./min
- maintain at 400° C. for 30 min
- increase to 600° C. at 7° C./min
- maintain at 600° C. for 10 min
- increase to 660° C. at 7° C./min
- maintain between 660 and 670° C. for 10 minutes
- cool under a vacuum to 400° C., then under a neutral gas.
- During this treatment, the metal forming the
wire 8 melts and penetrates by capillary action into the assembly gap orclearance 9, which it fills to form upon cooling a solder 7, whichforms joining radii 10 on each side of the shroud and the blade. - The example given above is non-limiting. In particular, the filler metal can be realised in a form other than a wire, e.g. in the form of a strip, powder or paste, and can then be placed in the
gap 9, preferably overflowing on the inside and/or outside of the shroud 1. The titanium-based metal forming the parts to be soldered may have a different composition from that of the alloy TA6V.
Claims (16)
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR0311890A FR2860740B1 (en) | 2003-10-10 | 2003-10-10 | METHOD FOR BRAZING A TURBOMACHINE COMPRESSOR RECTIFIER |
FR0311890 | 2003-10-10 |
Publications (1)
Publication Number | Publication Date |
---|---|
US20050100442A1 true US20050100442A1 (en) | 2005-05-12 |
Family
ID=34307526
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US10/951,660 Abandoned US20050100442A1 (en) | 2003-10-10 | 2004-09-29 | Method of soldering a compressor nozzle ring of a gas turbine |
Country Status (5)
Country | Link |
---|---|
US (1) | US20050100442A1 (en) |
EP (1) | EP1522368A1 (en) |
JP (1) | JP2005121014A (en) |
FR (1) | FR2860740B1 (en) |
RU (1) | RU2290285C2 (en) |
Cited By (12)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN100434721C (en) * | 2005-07-05 | 2008-11-19 | 洛阳双瑞精铸钛业有限公司 | Method for manufacturing anticorrosive wear-resistant titaniumalloy impeller for centrifugal blower |
US20130112737A1 (en) * | 2010-08-02 | 2013-05-09 | Snecma | Composite powder for diffusion-brazing assembly or resurfacing of superalloy parts |
WO2014014750A1 (en) * | 2012-07-16 | 2014-01-23 | United Technologies Corporation | Joint between airfoil and shroud |
US8998581B2 (en) | 2009-05-08 | 2015-04-07 | Nuovo Pignone S.P.A. | Composite shroud and methods for attaching the shroud to plural blades |
EP2901023A4 (en) * | 2012-09-25 | 2015-11-04 | United Technologies Corp | Aluminum brazing of hollow titanium fan blades |
CN105715587A (en) * | 2016-01-26 | 2016-06-29 | 西安热工研究院有限公司 | Gas turbine high-pressure compressor arc inclined seam casing treatment method based on velocity-direction customization |
US20170197270A1 (en) * | 2016-01-08 | 2017-07-13 | Rolls-Royce Corporation | Brazing titanium aluminum alloy components |
US9797255B2 (en) | 2011-12-14 | 2017-10-24 | Nuovo Pignone S.P.A. | Rotary machine including a machine rotor with a composite impeller portion and a metal shaft portion |
US9810235B2 (en) | 2009-11-23 | 2017-11-07 | Massimo Giannozzi | Mold for a centrifugal impeller, mold inserts and method for building a centrifugal impeller |
US9816518B2 (en) | 2009-11-23 | 2017-11-14 | Massimo Giannozzi | Centrifugal impeller and turbomachine |
CN112775511A (en) * | 2020-12-17 | 2021-05-11 | 中国航发哈尔滨东安发动机有限公司 | Vacuum brazing connection method of stainless steel rectifier |
US11162505B2 (en) | 2013-12-17 | 2021-11-02 | Nuovo Pignone Srl | Impeller with protection elements and centrifugal compressor |
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Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2896019B1 (en) * | 2006-01-12 | 2011-11-25 | Snecma | TURBOMACHINE COMPRESSOR RECTIFIER |
RU2613101C1 (en) * | 2015-10-26 | 2017-03-15 | Акционерное общество "Объединенная двигателестроительная корпорация" (АО "ОДК") | Gas turbine engine |
CN108031948A (en) * | 2018-01-12 | 2018-05-15 | 中国航发哈尔滨东安发动机有限公司 | The vacuum brazing frock of rectifier assembly |
CN113369617B (en) * | 2021-06-30 | 2023-06-27 | 中国航发动力股份有限公司 | Rectifier assembly machining method |
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US2778926A (en) * | 1951-09-08 | 1957-01-22 | Licentia Gmbh | Method for welding and soldering by electron bombardment |
US3917151A (en) * | 1973-02-08 | 1975-11-04 | Kaiser Aluminium Chem Corp | Vacuum brazing process |
US5643690A (en) * | 1994-11-11 | 1997-07-01 | Kabushiki Kaisha Toshiba | Molten carbonate fuel cell |
US5902498A (en) * | 1994-08-25 | 1999-05-11 | Qqc, Inc. | Methods of joining metal components and resulting articles particularly automotive torque converter assemblies |
US6416286B1 (en) * | 2000-12-28 | 2002-07-09 | General Electric Company | System and method for securing a radially inserted integral closure bucket to a turbine rotor wheel assembly having axially inserted buckets |
US6491142B2 (en) * | 2000-03-31 | 2002-12-10 | Honda Giken Kogyo Kabushiki Kaisha | Brake disk |
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BE525556A (en) * | 1953-01-07 | |||
US3466737A (en) * | 1966-05-18 | 1969-09-16 | Gen Motors Corp | Brazing of titanium |
US3769101A (en) * | 1971-06-28 | 1973-10-30 | Rohr Industries Inc | Liquid interface diffusion method of bonding titanium and titanium alloy honeycomb sandwich panel structure |
US4040822A (en) * | 1974-01-10 | 1977-08-09 | Alloy Metals, Inc. | Aluminum base fluxless brazing alloy |
FR2404102A1 (en) * | 1977-09-27 | 1979-04-20 | Snecma | Labyrinth seal for fixed blades of jet engine compressor - has abradable resin surface in contact with ridges of rotor seal |
JPH0382733A (en) * | 1989-08-28 | 1991-04-08 | Furukawa Alum Co Ltd | High strength aluminum alloy fin material for vapor phase brazing |
IT1317277B1 (en) * | 2000-04-18 | 2003-05-27 | Nuovo Pignone Spa | PROCEDURE FOR THE REALIZATION OF A STATIC DIAPHRAGM IN A STEAM UNATURBINE AND STATIC DIAPHRAGM SO REALIZED. |
-
2003
- 2003-10-10 FR FR0311890A patent/FR2860740B1/en not_active Expired - Lifetime
-
2004
- 2004-09-29 US US10/951,660 patent/US20050100442A1/en not_active Abandoned
- 2004-09-29 JP JP2004283448A patent/JP2005121014A/en active Pending
- 2004-09-29 EP EP04292323A patent/EP1522368A1/en not_active Withdrawn
- 2004-10-08 RU RU2004129633/02A patent/RU2290285C2/en active
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Also Published As
Publication number | Publication date |
---|---|
RU2004129633A (en) | 2006-03-20 |
JP2005121014A (en) | 2005-05-12 |
RU2290285C2 (en) | 2006-12-27 |
EP1522368A1 (en) | 2005-04-13 |
FR2860740A1 (en) | 2005-04-15 |
FR2860740B1 (en) | 2007-03-02 |
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