EP2456957A1 - Verfahren zur beschichtung einer turbinenschaufel - Google Patents
Verfahren zur beschichtung einer turbinenschaufelInfo
- Publication number
- EP2456957A1 EP2456957A1 EP10740509A EP10740509A EP2456957A1 EP 2456957 A1 EP2456957 A1 EP 2456957A1 EP 10740509 A EP10740509 A EP 10740509A EP 10740509 A EP10740509 A EP 10740509A EP 2456957 A1 EP2456957 A1 EP 2456957A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- intermediate layer
- component surface
- armor
- coating
- nickel
- 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
- 238000000034 method Methods 0.000 title claims abstract description 28
- 238000000576 coating method Methods 0.000 title claims abstract description 15
- 239000011248 coating agent Substances 0.000 title claims abstract description 13
- 238000005476 soldering Methods 0.000 claims abstract description 18
- 229910045601 alloy Inorganic materials 0.000 claims abstract description 9
- 239000000956 alloy Substances 0.000 claims abstract description 9
- 229910000599 Cr alloy Inorganic materials 0.000 claims abstract description 6
- 239000007769 metal material Substances 0.000 claims abstract description 6
- 229910010038 TiAl Inorganic materials 0.000 claims abstract 2
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 claims description 28
- 229910052759 nickel Inorganic materials 0.000 claims description 14
- 239000000463 material Substances 0.000 claims description 11
- 229910000679 solder Inorganic materials 0.000 claims description 11
- KDLHZDBZIXYQEI-UHFFFAOYSA-N Palladium Chemical compound [Pd] KDLHZDBZIXYQEI-UHFFFAOYSA-N 0.000 claims description 7
- 238000005304 joining Methods 0.000 claims description 7
- 238000005219 brazing Methods 0.000 claims description 4
- 239000010931 gold Substances 0.000 claims description 4
- 229910052737 gold Inorganic materials 0.000 claims description 4
- 229910052763 palladium Inorganic materials 0.000 claims description 4
- 229910052709 silver Inorganic materials 0.000 claims description 4
- BQCADISMDOOEFD-UHFFFAOYSA-N Silver Chemical compound [Ag] BQCADISMDOOEFD-UHFFFAOYSA-N 0.000 claims description 3
- 239000011888 foil Substances 0.000 claims description 3
- PCHJSUWPFVWCPO-UHFFFAOYSA-N gold Chemical compound [Au] PCHJSUWPFVWCPO-UHFFFAOYSA-N 0.000 claims description 3
- 229910001026 inconel Inorganic materials 0.000 claims description 3
- 239000011261 inert gas Substances 0.000 claims description 3
- 239000004332 silver Substances 0.000 claims description 3
- 239000010970 precious metal Substances 0.000 claims description 2
- 239000010410 layer Substances 0.000 claims 6
- 230000001939 inductive effect Effects 0.000 claims 1
- 239000011229 interlayer Substances 0.000 claims 1
- 238000005552 hardfacing Methods 0.000 abstract 3
- 239000002184 metal Substances 0.000 abstract 1
- OQPDWFJSZHWILH-UHFFFAOYSA-N [Al].[Al].[Al].[Ti] Chemical compound [Al].[Al].[Al].[Ti] OQPDWFJSZHWILH-UHFFFAOYSA-N 0.000 description 13
- 229910021324 titanium aluminide Inorganic materials 0.000 description 13
- 238000007747 plating Methods 0.000 description 4
- 238000003754 machining Methods 0.000 description 3
- 238000009736 wetting Methods 0.000 description 3
- 229910001347 Stellite Inorganic materials 0.000 description 2
- 238000005299 abrasion Methods 0.000 description 2
- 230000015572 biosynthetic process Effects 0.000 description 2
- AHICWQREWHDHHF-UHFFFAOYSA-N chromium;cobalt;iron;manganese;methane;molybdenum;nickel;silicon;tungsten Chemical compound C.[Si].[Cr].[Mn].[Fe].[Co].[Ni].[Mo].[W] AHICWQREWHDHHF-UHFFFAOYSA-N 0.000 description 2
- 238000005240 physical vapour deposition Methods 0.000 description 2
- 238000007789 sealing Methods 0.000 description 2
- 229910000601 superalloy Inorganic materials 0.000 description 2
- 229910000990 Ni alloy Inorganic materials 0.000 description 1
- 239000000788 chromium alloy Substances 0.000 description 1
- RLQJEEJISHYWON-UHFFFAOYSA-N flonicamid Chemical compound FC(F)(F)C1=CC=NC=C1C(=O)NCC#N RLQJEEJISHYWON-UHFFFAOYSA-N 0.000 description 1
- 239000007789 gas Substances 0.000 description 1
- 238000000227 grinding Methods 0.000 description 1
- 238000002955 isolation Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000002156 mixing Methods 0.000 description 1
- 229910000510 noble metal Inorganic materials 0.000 description 1
- 238000007750 plasma spraying Methods 0.000 description 1
- 239000010944 silver (metal) Substances 0.000 description 1
- 230000003313 weakening effect Effects 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
Classifications
-
- 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
- F01D5/22—Blade-to-blade connections, e.g. for damping vibrations
- F01D5/225—Blade-to-blade connections, e.g. for damping vibrations by shrouding
-
- 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
Definitions
- the present invention relates to a method of providing a metallic component surface with a coating and a turbine blade provided with such a coating.
- Turbomachinery blades for low-pressure turbines often consist of nickel-base alloys or superalloys such as IN 713, MAR 227 and B 1900.
- their shroud side Z-shaped contact surfaces are usually cobalt-chromium alloys (Co-Cr alloys or Stellite® ) armored.
- the height of the armor is in the finished state usually 2 mm.
- TIG titanium aluminide
- micro plasma or laser beam welding is typically used.
- the turbine blades are made of Titanium aluminide (TiAl)
- they can not be provided with Stellit® armor, as brittle phases may occur due to mixing of titanium aluminide with Stellit® resulting in cracks in the armor and in the armor
- Base material titanium aluminide of the shroud may arise.
- Object of the present invention is to provide a method for providing a metallic component surface, in particular a contact surface of a turbine blade made of a TiAl alloy, with a coating which eliminates the aforementioned disadvantages and allows a hard armor, and to provide a turbine blade with such armor ,
- a metallic component surface in particular a shroud surface of a turbine blade of a TiAl alloy
- a coating of a metallic material in particular a Co-Cr alloy
- first the component surface is undersized and a body of the metallic material manufactured. Then the body is fixed to the component surface and grouted by means of high-temperature soldering.
- An advantage of the material-sparing coating method according to the invention is that the component surfaces can be provided with a stable coating or armor without fear of crack formation in the armor or in the base material of the component. Thicknesses which can not be achieved by alternative coating methods such as galvanic coating, PVD (Physical Vapor Deposition) or plasma spraying can be achieved by forming the armor as a separate body, so that layer thicknesses of more than 2 mm are possible when using the method according to the invention.
- the body has at least two dimensions that already correspond to two target dimensions of the armor to be achieved before soldering. It is conceivable, for example, already to manufacture the body with a target height and target width of the armor, so that a finishing exclusively on lateral, the depth of the armor limiting
- the body is indirectly joined to the component surface via an intermediate layer of a different type of material, in particular Inconel® 718 or nickel.
- the intermediate layer makes it possible to increase the adhesion of the body to the component, since in this way a uniform solder wetting of the body and the component surface can be achieved.
- the intermediate layer can be designed as a foil or sheet and applied first to the body. Then the body is joined via the intermediate layer with the component surface.
- the intermediate layer is preferably joined to the body at a soldering temperature which is higher than a soldering temperature for joining the intermediate layer to the component surface.
- An exemplary brazing temperature for applying the intermediate layer to the body is by using a nickel-based solder as AMS 4777 1050 0 C and an exemplary
- Soldering temperature for joining the intermediate layer with the component surface is using a nickel alloy with a high precious metal content such as gold, silver or palladium (Au, Ag, Pd) equal to or less than 900 ° C.
- a temperature in the range of about 900 ° C is particularly advantageous when using the material Titanaluminids, as this in principle does not tolerate higher soldering temperatures.
- the body becomes first
- Nickel-plated on the circumference and then joined with the component surface acts quasi as an intermediate layer for adhesion improvement.
- Base material titanium aluminide for the component briefly a soldering temperature of about 1050 ° C can be set without fear of damaging the base material.
- solder AMS 4777 is possible, which is characterized by a uniform wetting of, for example, StellitO bodies and TiAl components.
- a turbine blade according to the invention has an armor, which after the
- the armor is resilient and may have a height or thickness of several millimeters. Damage to the
- Turbine material or the armor itself or a weakening of the turbine material or the armor by cracks when applying the armor is excluded by the application of the material-sparing method according to the invention.
- FIG. 1 shows a plan view of a shroud of a blade of a turbomachine
- FIG. 2 shows a cross section through an armor region of the shroud, which is provided with a first armor according to the invention
- Figure 3 shows a cross section through an armor region of the shroud, which is provided with a second armor according to the invention
- Figure 4 shows a cross section through an armor region of the shroud, which is provided with a third armor according to the invention.
- FIG. 1 shows a plan view of a blade-tip-side shroud 2 of a blade of a turbomachine, in particular of a gas turbine.
- the shroud 2 consists of a high-strength and high temperature resistant titanium aluminide alloy (TiAl alloy). It has a substantially plate-like shape with two spaced apart ones
- the Z-shaped side surfaces 10, 12 each define a side gap to a shroud of an adjacent blade and each have a planar contact surface 14, 16 for mutual support with the adjacent vibration isolation blade on.
- the contact surfaces 14, 16 are each provided with an armor 18, 20.
- the armor 18 or 20 has an approximately cuboidal body 22.
- the body or chip 22 is preferably made of a Co-Cr alloy, for example Stellit® 694, and has a rectangular cross-section with a plane base surface 24 facing the contact surface 14 or 16 of the shroud 2.
- the body 22 is made separately from the shroud 2, for example cast or sintered. He has a height that corresponds to a target height of the armor 18.
- the width of the base surface 24 preferably corresponds to a width of the contact surface 14.
- the body 22 After the body 22 has been fabricated, it is fixed on its contact surface 14 via its base 24 and then soldered to it with the formation of a large-area solder layer 26.
- the soldering is carried out inductively, for example in a high vacuum oven or under inert gas at a temperature in the range of about 1050 ° C using the nickel-based solder AMS 4777, which is characterized by a uniform wetting of the Stellit® contact surface 24 and the TiAl component surface 14.
- the armor 18 After soldering the body 22 to the shroud 2, the armor 18 is mechanically machined to final gauge. Since the body 22 already has a width corresponding to the contact surface 14 and, moreover, the total height of the body 22 corresponds to the desired height of the armor 18, machining to final gauge, for example by grinding, is only necessary insofar as the body 22 is in terms of its Depth to a depth of the contact surface 14 is set. Of course, however, the body 22 with excesses to
- the body 22 can also be connected to the contact surface 14 or 16 of the shroud 2 via an intermediate layer 28.
- the intermediate layer 28 is disposed between the contact surface 14 and the base 24 and serves to improve the adhesion conditions of the body 22 on the shroud 2. It consists primarily of a nickel-based alloy or superalloy such as INCONEL® 718 and is as a thin sheet or a foil with a constant material thickness.
- INCONEL® 718 a nickel-based alloy or superalloy
- Intermediate layer 28 each have one of the contact surface 14 corresponding geometry, so that a maximum connection area between the contact surface 14 and the intermediate layer 28 and between the intermediate layer 28 and the base 24 is provided.
- the contact surface 14 is made according to undersize.
- the body 22 is manufactured separately from the shroud 2 and the intermediate layer 28 is provided.
- the height of the body 22 corresponds to the desired height of the armor 18 reduced by the thickness of the intermediate layer 28.
- the width of the base 24 preferably corresponds to the width of the contact surface 14.
- the intermediate layer 28 also has a width, which corresponds to the contact surface width. Then, the intermediate layer 28 is soldered to the base 24, so that a large-area solder layer 30 is formed. This takes place at about 1050 ° C.
- a preferred lot is a
- Nickel-based solder such as AMS 4777, as it evenly wets both TiAl materials and Stellite®.
- the body 22 is fixed indirectly via the intermediate layer 28 on the contact surface 14. Subsequently, the intermediate layer 28 is soldered to the contact surface 14 to form a large-area solder layer 32. This is done at a temperature less than the temperature for brazing the intermediate layer 28 to the body 22. Preferably, a temperature in the range of less than or equal to 900 ° C is selected.
- a preferred solder is nickel-based and has a high noble metal content of, for example, gold, silver or palladium. Examples are Gapasil® 9, Palcusil® 10 and Palnisi® 10.
- the armor 18 After soldering the body 22 resp. the intermediate layer 28 with the shroud 2, the armor 18 is mechanically manufactured to final dimensions. Since already the body 22 and the intermediate layer 28 with the shroud 2, the armor 18 is mechanically manufactured to final dimensions. Since already the body 22 and the intermediate layer 28 with the shroud 2, the armor 18 is mechanically manufactured to final dimensions. Since already the body 22 and the intermediate layer 28 with the shroud 2, the armor 18 is mechanically manufactured to final dimensions. Since already the body 22 and the intermediate layer 28 with the shroud 2, the armor 18 is mechanically manufactured to final dimensions. Since already the body 22 and the intermediate layer 28 with the shroud 2, the armor 18 is mechanically manufactured to final dimensions. Since already the body 22 and the intermediate layer 28 with the shroud 2, the armor 18 is mechanically manufactured to final dimensions. Since already the body 22 and the intermediate layer 28 with the shroud 2, the armor 18 is mechanically manufactured to final dimensions. Since already the body 22 and the intermediate layer 28 with the shroud 2, the armor 18 is mechanically manufactured to final dimensions. Since already the body 22
- Intermediate layer 28 have a width corresponding to the contact surface 14 and beyond the total height of the body 22 corresponds to the intermediate layer 28 of the desired height of the armor 18, a machining of the armor 18 to gauge only on one dimension, here the depth necessary.
- the body 22 and the intermediate layer 28 with oversizes to compensate for component and
- Assembly tolerances be trained, so that a processing to final dimension in principle also respect.
- the height and / or the width of the armor 22 is necessary.
- the body 22 can also be coated on the circumference with a nickel layer 34, in which case the nickel layer arranged on the base surface 24 serves as an intermediate layer for improving the adhesion conditions.
- the geometry of the body base 24 corresponds to the geometry of the contact surface 14 or 16. Its height corresponds to the desired height of the armor 18th
- the contact surface 14 is respectively made according to undersize.
- the body 22 is separated from the shroud 2 manufactured and nickel-plated on the circumference. Since a subsequent processing of the armor 18 due to the nickel plating is not possible to their desired dimensions, the body 22 before the nickel plating, the target dimensions of the armor 18, ie, the body 22 has a height before the nickel plating, the target Height of the armor corresponds to 18 and its base 24 corresponds both in terms of their width and their depth of the width or depth of the
- the body 22 with its nickel-plated base surface 24 is fixed to the contact surface 14 and soldered thereto at a temperature of about 900 ° C. via a solder layer 36.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Turbine Rotor Nozzle Sealing (AREA)
- Other Surface Treatments For Metallic Materials (AREA)
- Pressure Welding/Diffusion-Bonding (AREA)
- Arc Welding In General (AREA)
Abstract
Description
Claims
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE102009034168 | 2009-07-22 | ||
| PCT/DE2010/000792 WO2011009430A1 (de) | 2009-07-22 | 2010-07-08 | Verfahren zur beschichtung einer turbinenschaufel |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| EP2456957A1 true EP2456957A1 (de) | 2012-05-30 |
| EP2456957B1 EP2456957B1 (de) | 2016-05-04 |
Family
ID=43027639
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP10740509.4A Not-in-force EP2456957B1 (de) | 2009-07-22 | 2010-07-08 | Verfahren zur beschichtung von turbinenschaufel |
Country Status (4)
| Country | Link |
|---|---|
| US (1) | US8393528B2 (de) |
| EP (1) | EP2456957B1 (de) |
| ES (1) | ES2580227T3 (de) |
| WO (1) | WO2011009430A1 (de) |
Families Citing this family (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102011086524A1 (de) * | 2011-11-17 | 2013-05-23 | Mtu Aero Engines Gmbh | Panzerung von Dichtfins von TiAl-Schaufeln durch induktives Auftragslöten von Hartstoffpartikeln |
| DE102011087158A1 (de) | 2011-11-25 | 2013-05-29 | Mtu Aero Engines Gmbh | Verfahren zur Panzerung der Z-Notch von TiAl-Schaufeln |
| US20130202439A1 (en) * | 2012-02-08 | 2013-08-08 | General Electric Company | Rotating assembly for a turbine assembly |
| US9862029B2 (en) | 2013-03-15 | 2018-01-09 | Kennametal Inc | Methods of making metal matrix composite and alloy articles |
| US9346101B2 (en) | 2013-03-15 | 2016-05-24 | Kennametal Inc. | Cladded articles and methods of making the same |
| US9849533B2 (en) | 2013-05-30 | 2017-12-26 | General Electric Company | Hybrid diffusion-brazing process and hybrid diffusion-brazed article |
| DE102013216393A1 (de) | 2013-08-19 | 2015-03-12 | MTU Aero Engines AG | Intermetallische Verschleißschutzschicht für Titan-Werkstoffe |
| DE102014224156B4 (de) | 2014-11-26 | 2024-05-23 | MTU Aero Engines AG | Lötverfahren zur Panzerung der Z-Notch von TIAL-Schaufeln und Bauteil einer Strömungsmaschine mit einer solchen Panzerung |
| EP3216554B1 (de) * | 2016-03-09 | 2020-05-06 | MTU Aero Engines GmbH | Bauteil mit verschleissgeschützten öffnungen und vertiefungen sowie verfahren zur herstellung derselben |
| US11117208B2 (en) | 2017-03-21 | 2021-09-14 | Kennametal Inc. | Imparting wear resistance to superalloy articles |
| GB2568063B (en) | 2017-11-02 | 2019-10-30 | Hardide Plc | Water droplet erosion resistant coatings for turbine blades and other components |
| FR3084399B1 (fr) * | 2018-07-24 | 2021-05-14 | Safran Aircraft Engines | Aube mobile pour une roue d'une turbomachine |
| CN109352197A (zh) * | 2018-11-18 | 2019-02-19 | 湖南新融创科技有限公司 | 一种手机组装生产用焊接装置 |
Family Cites Families (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3702763A (en) * | 1971-04-19 | 1972-11-14 | Western Gold & Platinum Co | High temperature brazing alloy |
| US4414178A (en) * | 1981-10-09 | 1983-11-08 | General Electric Company | Nickel-palladium-chromium-boron brazing alloy |
| US5198308A (en) * | 1990-12-21 | 1993-03-30 | Zimmer, Inc. | Titanium porous surface bonded to a cobalt-based alloy substrate in an orthopaedic implant device |
| FR2746043B1 (fr) * | 1996-03-14 | 1998-04-17 | Soc Nat Detude Et De Construction De Moteurs Daviation Snecma | Procede de realisation d'un apport sur une zone localisee de piece en superalliage |
| CA2307471A1 (en) * | 1997-10-27 | 1999-05-06 | Siemens Westinghouse Power Corporation | Method of bonding cast superalloys |
| US6164916A (en) | 1998-11-02 | 2000-12-26 | General Electric Company | Method of applying wear-resistant materials to turbine blades, and turbine blades having wear-resistant materials |
| US7771171B2 (en) | 2006-12-14 | 2010-08-10 | General Electric Company | Systems for preventing wear on turbine blade tip shrouds |
| DE102007048789A1 (de) * | 2007-10-10 | 2009-05-20 | Access E.V. | Füge- und Materialauftragsverfahren für ein Werkstück mit einem Werkstückbereich aus einer Titanaluminid-Legierung |
-
2010
- 2010-07-08 EP EP10740509.4A patent/EP2456957B1/de not_active Not-in-force
- 2010-07-08 ES ES10740509.4T patent/ES2580227T3/es active Active
- 2010-07-08 US US13/386,074 patent/US8393528B2/en not_active Expired - Fee Related
- 2010-07-08 WO PCT/DE2010/000792 patent/WO2011009430A1/de not_active Ceased
Non-Patent Citations (1)
| Title |
|---|
| See references of WO2011009430A1 * |
Also Published As
| Publication number | Publication date |
|---|---|
| WO2011009430A1 (de) | 2011-01-27 |
| ES2580227T3 (es) | 2016-08-22 |
| EP2456957B1 (de) | 2016-05-04 |
| US20120125980A1 (en) | 2012-05-24 |
| WO2011009430A9 (de) | 2011-03-17 |
| US8393528B2 (en) | 2013-03-12 |
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