WO2013066671A1 - Isothermal structural repair of superalloy components including turbine blades - Google Patents
Isothermal structural repair of superalloy components including turbine blades Download PDFInfo
- Publication number
- WO2013066671A1 WO2013066671A1 PCT/US2012/061471 US2012061471W WO2013066671A1 WO 2013066671 A1 WO2013066671 A1 WO 2013066671A1 US 2012061471 W US2012061471 W US 2012061471W WO 2013066671 A1 WO2013066671 A1 WO 2013066671A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- superalloy
- component
- substrate
- filler
- crack
- Prior art date
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
- B22D19/00—Casting in, on, or around objects which form part of the product
- B22D19/10—Repairing defective or damaged objects by metal casting procedures
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23P—METAL-WORKING NOT OTHERWISE PROVIDED FOR; COMBINED OPERATIONS; UNIVERSAL MACHINE TOOLS
- B23P6/00—Restoring or reconditioning objects
- B23P6/04—Repairing fractures or cracked metal parts or products, e.g. castings
- B23P6/045—Repairing fractures or cracked metal parts or products, e.g. castings of turbine components, e.g. moving or stationary blades, rotors, etc.
-
- 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
- B23K35/30—Selection of soldering or welding materials proper with the principal constituent melting at less than 1550 degrees C
- B23K35/3033—Ni as the principal constituent
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23P—METAL-WORKING NOT OTHERWISE PROVIDED FOR; COMBINED OPERATIONS; UNIVERSAL MACHINE TOOLS
- B23P6/00—Restoring or reconditioning objects
- B23P6/002—Repairing turbine components, e.g. moving or stationary blades, rotors
- B23P6/007—Repairing turbine components, e.g. moving or stationary blades, rotors using only additive methods, e.g. build-up welding
-
- 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
- F01D5/005—Repairing methods or devices
-
- 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
- B23K2101/001—Turbines
-
- 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
- F05D2230/80—Repairing, retrofitting or upgrading methods
-
- 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
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T50/00—Aeronautics or air transport
- Y02T50/60—Efficient propulsion technologies, e.g. for aircraft
-
- 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
- Y10T428/12—All metal or with adjacent metals
- Y10T428/12493—Composite; i.e., plural, adjacent, spatially distinct metal components [e.g., layers, joint, etc.]
- Y10T428/12639—Adjacent, identical composition, components
Definitions
- the invention relates to structural repair of defects in advanced superalloy components.
- the invention relates to repair of cracks or other defects in superalloy turbine blades that are used in steam or gas turbines (industrial or aero) , by filling the crack with molten superalloy filler, in a manner that does not significantly reduce mechanical structural or material properties of the superalloy blade substrate.
- the molten filler superalloy solidifies into a cast in place patch of filler superalloy.
- specifications e.g., seventy percent ultimate tensile strength of the original specification.
- cosmetic repair may be used in order to restore the repaired component's original profile geometry.
- an example of cosmetic repair is for filling surface pits (as opposed to
- an object of the invention is to perform structural repairs of superalloy components, such as turbine blades, so structural cracks and other surface defects can be repaired.
- Another object of the present invention is to increase the likelihood of performing successful
- Yet another object of the present invention is to perform structural repair of superalloy components, such as turbine blades, with proven, repeatable repair techniques and post-repair heat treatment procedures that do not require complex welding.
- An additional object of the present invention is to create a universal method for performing repairs of superalloy components, such as turbine blades that if desired can be used for repair of all blade defects.
- the molten filler alloy subsequently solidifies and fills at least a portion of the crack or other defect, creating thereby a cast in place patch or filling at the isothermally heated temperature.
- One or more casting filling passes are completed in order to fill the crack or other defect to a desired level or completely with molten filler alloy. Isothermal build up of the now crack-filled superalloy component is completed. Upon completion of build up, excess filler alloy may be removed to conform the crack surface profile with that of the adjoining blade or other component substrate.
- Embodiments of the present invention also feature a repaired superalloy component, such as for example a turbine blade, with a superalloy substrate having a crack therein.
- the crack is filled with a cast in place patch of filler superalloy selected from the group consisting of the identical superalloy as that of the superalloy component substrate and other superalloys having comparable structural properties .
- the patch may include a plurality of layers of filler superalloy.
- the substrate and filler alloys may be CM247 or DS247
- a repaired superalloy component such as for example a turbine blade
- a superalloy substrate having a crack therein.
- the crack is filled with a cast in place patch of filler superalloy selected from the group consisting of the identical superalloy as the superalloy component substrate and other superalloys having comparable structural properties.
- the cast in place patch is formed by the process of heating the superalloy component substrate to a desired isothermal hold temperature. Thereafter the crack is at least partially filled with molten superalloy filler.
- the patch may include a plurality of layers of filler superalloy.
- the substrate and filler alloys may be C 247 or DS247 superalloy.
- the process may be performed in an oven under protective atmosphere and/or under a vacuum pressure less than ambient air pressure.
- Yet other embodiments of the present invention feature a method for repairing a cracked superalloy component with a substrate region having a crack therein.
- the substrate region is heated to a desired isothermal temperature.
- the crack is then at least partially filled with molten superalloy filler.
- the molten filler is solidified to form a cast in place patch.
- the patch may include a plurality of layers of filler superalloy formed by depositing a plurality of sequential layers of molten superalloy filler. The sequential layer depositing thereby fills any filler cracks appearing in previously deposited superalloy filler.
- the substrate and filler alloys may be CM247 or DS247 superalloy.
- the process may be performed in an oven under controlled melt atmosphere of an inert gas or under a vacuum pressure less than ambient air pressure.
- FIG. 1 shows a perspective view of a superalloy turbine blade component having a crack defect within its substrate
- FIG. 2 is a cross-sectional schematic view of the turbine blade component of FIG. 1, taken along 2-2 thereof;
- FIG. 3 is a schematic perspective view of a repair apparatus for structurally repairing a crack defect in a superalloy component
- FIG. 4 is a cross-sectional schematic view similar to that of FIG. 2, showing partial structural crack repair
- FIG. 5 is a cross-sectional schematic view similar to that of FIG. 4 showing completed structural crack repair
- FIG. 6 is a cross-sectional schematic view of the structural repair of FIG. 5, wherein excess filler casting has been removed to conform the component surface profile in the repair zone to that of the adjoining blade component substrate.
- FIGs. 1 and 2 show an exemplary stationary gas turbine blade, having a substrate 10 and a crack defect 12.
- the region surrounding the surface defect crack 12 is cleaned. Referring to FIG. 3, the cleaned region of the blade component
- substrate 10 (or the entire component) is preferably heated within a protective atmosphere of a vacuum or an inert gas in an oven 20 to a desired temperature, below the blade incipient melting temperature and above 800 °C (1472°F) .
- a known electric induction heater 30 is in or in communication with the oven 20.
- the heater 30 includes a crucible tube 32 that is constructed of quartz, ruby or other known material suitable for melting powdered superalloy material to a molten state.
- the heater 30 also has induction heating coil elements 34 that melt the superalloy filler material 40 within the crucible 32 at a temperature above its melting point .
- the now heated blade crack 12 is filled with molten filler superalloy material 40 that is the same as the blade substrate alloy or another superalloy material having comparable
- CM247 or DS247 superalloy is desirably repaired with molten CM247 filler alloy.
- the molten filler alloy material 40 is deposited along the length of the crack 12 by relative movement between the crack and the crucible 32.
- the poured filler alloy material 40 fuses with the substrate material 10 at the isothermal hold temperature without any significant localized melting of the substrate material.
- the filler alloy material 40 subsequently hardens at the relatively lower isothermal hold temperature within the oven 20 to form a filler patch within at least a portion of the crack 12 or other defect.
- As the filler alloy material 40 solidifies and hardens into a filler patch one or more filler cracks 41 may form therein.
- One or more filling passes 140, 240, 340, etc., are deposited in order to fill the crack 12 or other defect completely with
- cracks 41, 141 and 241 that are below the surface contour of the blade substrate 10 are filled by subsequently deposited layers until the last crack 341 layer is above the substrate surface. Any desired isothermal heating of the now crack-filled superalloy component substrate 10 is completed. Upon completion of any isothermal heating or other cooling processes, excess filler alloy 340 may be removed to conform the crack surface profile with that of the adjoining blade or other component substrate, as shown in FIG. 6.
- crack recess 12 would have been filled by heat application of softer filler material (cosmetic repair) or by filler material of similar hardness.
- softer filler material cosmetic repair
- filler material of similar hardness As previously discussed, welding techniques applying superalloy filler generally induce undesirable cracks in the superalloy component during welding or during subsequent post-welding heat treatment .
- nugget In conventional structural superalloy welding a nugget is often formed in the welded zone that is subject to excessive shrinkage stresses during solidification. That is, surrounding material in the unmelted substrate 10 is not free to yield to accommodate shrinkage stresses during solidification of the thereby trapped weld nugget.
- isothermal filler alloy patch casting repair process overfills any filler patch solidification cracks below the repaired substrate surface with a subsequently deposited molten filler layer.
- the now repaired superalloy component substrate 10 no longer has surface damage, which is replaced by fresh superalloy repair filler material 40, 410, 240, 340, having substantially similar material properties to the original substrate material. Specifically, surface hardness and strength properties within the hardened filler alloy patch are substantially similar to those of the original surrounding material. Mechanical or
- thermally induced stresses within the component substrate 10 can be transferred across the former crack 12 that is now filled by the superalloy filler material 40, 140, 240, 340, due to their now bonded relationship. Relative affixation between the repaired superalloy component substrate 10 and the new filler patch superalloy 40, 140, 240, 340 along the former crack surface 12 is sufficient to maintain structural integrity.
- superalloy may be repaired without the need to scrap and replace them with new blades. It is possible to utilize the present invention defect repair process on all defects, including those previously repaired by non structural "cosmetic" repair methods.
- the overall objective is to achieve localized bonding between the superalloy subcomponent substrate 10 along the crack 12 surface and the cast in place filler alloy solidified patch 40, without significantly impacting the superalloy material properties of either material.
- the isothermal casting processes of the present invention avoid gross changes in the superalloy substrate 10.
Abstract
Description
Claims
Priority Applications (6)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP12787234.9A EP2753451B1 (en) | 2011-11-03 | 2012-10-23 | Isothermal structural repair of superalloy components including turbine blades |
JP2014541087A JP2015503047A (en) | 2011-11-03 | 2012-10-23 | Isothermal structural repair of superalloy components including turbine blades |
CA2854671A CA2854671A1 (en) | 2011-11-03 | 2012-10-23 | Isothermal structural repair of superalloy components including turbine blades |
KR1020147015134A KR20140088611A (en) | 2011-11-03 | 2012-10-23 | Isothermal structural repair of superalloy components including turbine blades |
MX2014005341A MX338598B (en) | 2011-11-03 | 2012-10-23 | Isothermal structural repair of superalloy components including turbine blades. |
CN201280053808.5A CN103889649B (en) | 2011-11-03 | 2012-10-23 | The isothermal structure reparation of superalloy part including turbine blade |
Applications Claiming Priority (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US201161555109P | 2011-11-03 | 2011-11-03 | |
US61/555,109 | 2011-11-03 | ||
US13/414,751 | 2012-03-08 | ||
US13/414,751 US9174314B2 (en) | 2011-11-03 | 2012-03-08 | Isothermal structural repair of superalloy components including turbine blades |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2013066671A1 true WO2013066671A1 (en) | 2013-05-10 |
Family
ID=47178921
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/US2012/061471 WO2013066671A1 (en) | 2011-11-03 | 2012-10-23 | Isothermal structural repair of superalloy components including turbine blades |
Country Status (8)
Country | Link |
---|---|
US (1) | US9174314B2 (en) |
EP (1) | EP2753451B1 (en) |
JP (1) | JP2015503047A (en) |
KR (1) | KR20140088611A (en) |
CN (1) | CN103889649B (en) |
CA (1) | CA2854671A1 (en) |
MX (1) | MX338598B (en) |
WO (1) | WO2013066671A1 (en) |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP3203019A1 (en) * | 2016-02-03 | 2017-08-09 | General Electric Company | Method of remotely joining material to a surface area of a component |
EP3366415A1 (en) * | 2017-02-23 | 2018-08-29 | General Electric Company | A method of brazing a treatment area of a load-bearing component |
US10456849B2 (en) | 2017-05-25 | 2019-10-29 | General Electric Company | Composite component having angled braze joint, coupon brazing method and related storage medium |
Families Citing this family (12)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP2859989A1 (en) * | 2013-10-08 | 2015-04-15 | Siemens Aktiengesellschaft | Method for repairing thin walls |
CN104191153A (en) * | 2014-07-10 | 2014-12-10 | 中国人民解放军理工大学 | Surface processing method for cracked aluminum alloy pipe before composite material repair treatment |
TR201815867T4 (en) | 2016-01-15 | 2018-11-21 | Buss Ag | Crosslinkable polyethylene compounds production apparatus and method. |
US10767501B2 (en) * | 2016-04-21 | 2020-09-08 | General Electric Company | Article, component, and method of making a component |
CN106493507B (en) * | 2016-11-16 | 2019-08-13 | 中国人民解放军第五七一九工厂 | A kind of vacuum brazing repair method of aero-engine supersonic speed adjustment sheet crackle |
CN106735996A (en) * | 2016-12-27 | 2017-05-31 | 渤海造船厂集团有限公司 | A kind of Non-Destructive Testing training weld seam transversal crack preparation method |
US10556294B2 (en) * | 2017-06-06 | 2020-02-11 | General Electric Company | Method of treating superalloy articles |
CN109722632A (en) * | 2017-10-31 | 2019-05-07 | 陕西南水汽车配件制造有限公司 | A kind of aluminum alloy control arm forging coarse grains on surface ring control method |
CN110871267A (en) * | 2018-08-29 | 2020-03-10 | 惠州比亚迪电子有限公司 | Secondary die-casting metal product with improved appearance defects, preparation method of secondary die-casting metal product, mobile phone middle frame and mobile phone |
US11235405B2 (en) * | 2019-05-02 | 2022-02-01 | General Electric Company | Method of repairing superalloy components using phase agglomeration |
CN110654565B (en) * | 2019-09-26 | 2021-10-08 | 东方航空技术有限公司 | Method and system for quickly repairing aircraft exterior complex curved surface skin |
KR102480317B1 (en) | 2022-09-02 | 2022-12-23 | 터보파워텍(주) | Laser cladding automation device for turbine rotor repair |
Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5897801A (en) * | 1997-01-22 | 1999-04-27 | General Electric Company | Welding of nickel-base superalloys having a nil-ductility range |
WO2001041970A1 (en) * | 1999-12-10 | 2001-06-14 | General Electric Company | Weld repair of directionally solidified articles |
US20090320966A1 (en) * | 2006-08-01 | 2009-12-31 | Siemens Power Generation, Inc. | Weld repair of superalloy materials |
Family Cites Families (12)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4808055A (en) * | 1987-04-15 | 1989-02-28 | Metallurgical Industries, Inc. | Turbine blade with restored tip |
EP1340567A1 (en) * | 2002-02-27 | 2003-09-03 | ALSTOM (Switzerland) Ltd | Method of removing casting defects |
DE10356562A1 (en) * | 2003-12-04 | 2005-06-30 | Mtu Aero Engines Gmbh | Solder alloy, use of the solder alloy and method for machining, in particular repair, of workpieces, in particular gas turbine components |
US7360678B2 (en) * | 2005-01-27 | 2008-04-22 | United Technologies Corporation | Repair and reclassification of superalloy components |
US20080017280A1 (en) * | 2006-07-18 | 2008-01-24 | United Technologies Corporation | Process for repairing turbine engine components |
US8561298B2 (en) * | 2007-03-01 | 2013-10-22 | Siemens Energy, Inc. | Superalloy component welding at ambient temperature |
US8394215B2 (en) * | 2007-03-22 | 2013-03-12 | United Technologies Corporation | Dual process nickel alloy crack repair |
US20100032414A1 (en) * | 2007-03-23 | 2010-02-11 | Nikolai Arjakine | Inert gas mixture and method for welding |
US20090057275A1 (en) * | 2007-08-31 | 2009-03-05 | General Electric Company | Method of Repairing Nickel-Based Alloy Articles |
EP2182084A1 (en) * | 2008-11-04 | 2010-05-05 | Siemens Aktiengesellschaft | Welding filler material, use of the welding filler material and component |
JP2010203258A (en) * | 2009-02-27 | 2010-09-16 | Mitsubishi Heavy Ind Ltd | Repairing method of moving blade |
US8726501B2 (en) * | 2009-08-31 | 2014-05-20 | General Electric Company | Method of welding single crystal turbine blade tips with an oxidation-resistant filler material |
-
2012
- 2012-03-08 US US13/414,751 patent/US9174314B2/en not_active Expired - Fee Related
- 2012-10-23 MX MX2014005341A patent/MX338598B/en active IP Right Grant
- 2012-10-23 CN CN201280053808.5A patent/CN103889649B/en not_active Expired - Fee Related
- 2012-10-23 JP JP2014541087A patent/JP2015503047A/en active Pending
- 2012-10-23 CA CA2854671A patent/CA2854671A1/en not_active Abandoned
- 2012-10-23 KR KR1020147015134A patent/KR20140088611A/en not_active Application Discontinuation
- 2012-10-23 WO PCT/US2012/061471 patent/WO2013066671A1/en active Application Filing
- 2012-10-23 EP EP12787234.9A patent/EP2753451B1/en not_active Not-in-force
Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5897801A (en) * | 1997-01-22 | 1999-04-27 | General Electric Company | Welding of nickel-base superalloys having a nil-ductility range |
WO2001041970A1 (en) * | 1999-12-10 | 2001-06-14 | General Electric Company | Weld repair of directionally solidified articles |
US20090320966A1 (en) * | 2006-08-01 | 2009-12-31 | Siemens Power Generation, Inc. | Weld repair of superalloy materials |
Cited By (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP3203019A1 (en) * | 2016-02-03 | 2017-08-09 | General Electric Company | Method of remotely joining material to a surface area of a component |
US10094221B2 (en) | 2016-02-03 | 2018-10-09 | General Electric Company | In situ gas turbine prevention of crack growth progression |
EP3366415A1 (en) * | 2017-02-23 | 2018-08-29 | General Electric Company | A method of brazing a treatment area of a load-bearing component |
US11039507B2 (en) | 2017-02-23 | 2021-06-15 | General Electric Company | Method of brazing a treatment area of a load-bearing component |
US10456849B2 (en) | 2017-05-25 | 2019-10-29 | General Electric Company | Composite component having angled braze joint, coupon brazing method and related storage medium |
Also Published As
Publication number | Publication date |
---|---|
JP2015503047A (en) | 2015-01-29 |
MX2014005341A (en) | 2014-05-28 |
EP2753451B1 (en) | 2018-10-03 |
US20130115092A1 (en) | 2013-05-09 |
EP2753451A1 (en) | 2014-07-16 |
CN103889649B (en) | 2017-08-08 |
MX338598B (en) | 2016-04-22 |
US9174314B2 (en) | 2015-11-03 |
CN103889649A (en) | 2014-06-25 |
CA2854671A1 (en) | 2013-05-10 |
KR20140088611A (en) | 2014-07-10 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
US9174314B2 (en) | Isothermal structural repair of superalloy components including turbine blades | |
TW527251B (en) | Weld repair of directionally solidified articles | |
EP1835041B1 (en) | Nickel alloy welding wire | |
US9186740B2 (en) | Projection resistance brazing of superalloys | |
EP3219434B1 (en) | Repair of superalloys by weld forced crack and braze repair | |
JPH05192785A (en) | Welding of high tension nickel- based superalloys | |
US9127550B2 (en) | Turbine superalloy component defect repair with low-temperature curing resin | |
EP2537619B1 (en) | Build-up welding method of fabricating a component and a manufactured component | |
JP2005349478A (en) | Homogeneous welding method for superalloy article | |
US9273562B2 (en) | Projection resistance welding of superalloys | |
RU2763528C1 (en) | Replacing the turbine aerodynamic profile section with metal pre-sintered soldering billet | |
US9186724B2 (en) | Electroslag and electrogas repair of superalloy components | |
US9085042B2 (en) | Stud welding repair of superalloy components | |
JP7233422B2 (en) | Highly oxidation resistant alloy for gas turbine applications | |
WO2019177607A1 (en) | Laser braze wire additive manufacturing of a super solutioned turbine blade component with subzero cooling | |
KR100663204B1 (en) | Method for curing of weld defects in ni-based superalloy components for gas turbine |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
121 | Ep: the epo has been informed by wipo that ep was designated in this application |
Ref document number: 12787234 Country of ref document: EP Kind code of ref document: A1 |
|
ENP | Entry into the national phase |
Ref document number: 2854671 Country of ref document: CA |
|
WWE | Wipo information: entry into national phase |
Ref document number: MX/A/2014/005341 Country of ref document: MX |
|
NENP | Non-entry into the national phase |
Ref country code: DE |
|
ENP | Entry into the national phase |
Ref document number: 2014541087 Country of ref document: JP Kind code of ref document: A |
|
ENP | Entry into the national phase |
Ref document number: 20147015134 Country of ref document: KR Kind code of ref document: A |