EP3737720A1 - Beschichtungszusammensetzung zur oberflächenreparatur von strömungsmaschinenbauteilen und kompressorenbauteilen - Google Patents
Beschichtungszusammensetzung zur oberflächenreparatur von strömungsmaschinenbauteilen und kompressorenbauteilenInfo
- Publication number
- EP3737720A1 EP3737720A1 EP19720470.4A EP19720470A EP3737720A1 EP 3737720 A1 EP3737720 A1 EP 3737720A1 EP 19720470 A EP19720470 A EP 19720470A EP 3737720 A1 EP3737720 A1 EP 3737720A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- coating composition
- compressor
- turbomachine
- composition according
- coating
- 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.)
- Pending
Links
- 239000008199 coating composition Substances 0.000 title claims abstract description 99
- 230000008439 repair process Effects 0.000 title description 7
- 238000000576 coating method Methods 0.000 claims abstract description 34
- 239000011248 coating agent Substances 0.000 claims abstract description 32
- 238000000034 method Methods 0.000 claims abstract description 23
- 239000012530 fluid Substances 0.000 claims abstract description 15
- 239000002245 particle Substances 0.000 claims description 43
- 238000012423 maintenance Methods 0.000 claims description 16
- 239000000463 material Substances 0.000 claims description 13
- 239000000203 mixture Substances 0.000 claims description 13
- 239000000049 pigment Substances 0.000 claims description 10
- 239000004848 polyfunctional curative Substances 0.000 claims description 9
- 239000013008 thixotropic agent Substances 0.000 claims description 6
- 150000001247 metal acetylides Chemical class 0.000 claims description 5
- 229920001187 thermosetting polymer Polymers 0.000 claims description 4
- 239000002966 varnish Substances 0.000 claims description 4
- HCHKCACWOHOZIP-UHFFFAOYSA-N Zinc Chemical compound [Zn] HCHKCACWOHOZIP-UHFFFAOYSA-N 0.000 claims description 2
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims description 2
- 229910052782 aluminium Inorganic materials 0.000 claims description 2
- 239000000919 ceramic Substances 0.000 claims description 2
- 239000011521 glass Substances 0.000 claims description 2
- 239000003973 paint Substances 0.000 claims description 2
- 239000011701 zinc Substances 0.000 claims description 2
- 229910052725 zinc Inorganic materials 0.000 claims description 2
- 239000003795 chemical substances by application Substances 0.000 claims 1
- 238000010276 construction Methods 0.000 claims 1
- 238000001723 curing Methods 0.000 description 13
- 230000000875 corresponding effect Effects 0.000 description 8
- 230000008569 process Effects 0.000 description 8
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 7
- 238000003848 UV Light-Curing Methods 0.000 description 6
- 239000004593 Epoxy Substances 0.000 description 4
- 230000007774 longterm Effects 0.000 description 4
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 description 3
- 238000006243 chemical reaction Methods 0.000 description 3
- 239000011247 coating layer Substances 0.000 description 3
- 239000010410 layer Substances 0.000 description 3
- 238000005259 measurement Methods 0.000 description 3
- 230000001681 protective effect Effects 0.000 description 3
- 238000012546 transfer Methods 0.000 description 3
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 description 2
- 230000008901 benefit Effects 0.000 description 2
- 239000006185 dispersion Substances 0.000 description 2
- 239000003822 epoxy resin Substances 0.000 description 2
- LNEPOXFFQSENCJ-UHFFFAOYSA-N haloperidol Chemical compound C1CC(O)(C=2C=CC(Cl)=CC=2)CCN1CCCC(=O)C1=CC=C(F)C=C1 LNEPOXFFQSENCJ-UHFFFAOYSA-N 0.000 description 2
- 238000002156 mixing Methods 0.000 description 2
- TWNQGVIAIRXVLR-UHFFFAOYSA-N oxo(oxoalumanyloxy)alumane Chemical compound O=[Al]O[Al]=O TWNQGVIAIRXVLR-UHFFFAOYSA-N 0.000 description 2
- 229920000647 polyepoxide Polymers 0.000 description 2
- 230000002829 reductive effect Effects 0.000 description 2
- 238000007789 sealing Methods 0.000 description 2
- 239000000377 silicon dioxide Substances 0.000 description 2
- 229910052814 silicon oxide Inorganic materials 0.000 description 2
- 239000004594 Masterbatch (MB) Substances 0.000 description 1
- 230000004913 activation Effects 0.000 description 1
- 239000000654 additive Substances 0.000 description 1
- 125000003118 aryl group Chemical group 0.000 description 1
- 230000000740 bleeding effect Effects 0.000 description 1
- 239000000470 constituent Substances 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 238000004132 cross linking Methods 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 230000008030 elimination Effects 0.000 description 1
- 238000003379 elimination reaction Methods 0.000 description 1
- 230000003628 erosive effect Effects 0.000 description 1
- 238000011156 evaluation Methods 0.000 description 1
- 230000008020 evaporation Effects 0.000 description 1
- 238000001704 evaporation Methods 0.000 description 1
- 238000001033 granulometry Methods 0.000 description 1
- 238000000227 grinding Methods 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 239000012948 isocyanate Substances 0.000 description 1
- 150000002513 isocyanates Chemical class 0.000 description 1
- 239000004922 lacquer Substances 0.000 description 1
- 230000000670 limiting effect Effects 0.000 description 1
- 238000011068 loading method Methods 0.000 description 1
- 230000007246 mechanism Effects 0.000 description 1
- 230000036961 partial effect Effects 0.000 description 1
- 239000000843 powder Substances 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 239000011241 protective layer Substances 0.000 description 1
- 108090000623 proteins and genes Proteins 0.000 description 1
- 230000005855 radiation Effects 0.000 description 1
- 239000002904 solvent Substances 0.000 description 1
- 239000007921 spray Substances 0.000 description 1
- UONOETXJSWQNOL-UHFFFAOYSA-N tungsten carbide Chemical compound [W+]#[C-] UONOETXJSWQNOL-UHFFFAOYSA-N 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
- 239000001039 zinc pigment Substances 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
- F01D5/28—Selecting particular materials; Particular measures relating thereto; Measures against erosion or corrosion
- F01D5/288—Protective coatings for blades
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D5/00—Coating compositions, e.g. paints, varnishes or lacquers, characterised by their physical nature or the effects produced; Filling pastes
- C09D5/08—Anti-corrosive paints
- C09D5/10—Anti-corrosive paints containing metal dust
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D5/00—Coating compositions, e.g. paints, varnishes or lacquers, characterised by their physical nature or the effects produced; Filling pastes
- C09D5/08—Anti-corrosive paints
- C09D5/10—Anti-corrosive paints containing metal dust
- C09D5/103—Anti-corrosive paints containing metal dust containing Al
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D5/00—Coating compositions, e.g. paints, varnishes or lacquers, characterised by their physical nature or the effects produced; Filling pastes
- C09D5/08—Anti-corrosive paints
- C09D5/10—Anti-corrosive paints containing metal dust
- C09D5/106—Anti-corrosive paints containing metal dust containing Zn
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D7/00—Features of coating compositions, not provided for in group C09D5/00; Processes for incorporating ingredients in coating compositions
- C09D7/40—Additives
- C09D7/60—Additives non-macromolecular
- C09D7/61—Additives non-macromolecular inorganic
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D7/00—Features of coating compositions, not provided for in group C09D5/00; Processes for incorporating ingredients in coating compositions
- C09D7/40—Additives
- C09D7/66—Additives characterised by particle size
- C09D7/69—Particle size larger than 1000 nm
-
- 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
- F01D25/00—Component parts, details, or accessories, not provided for in, or of interest apart from, other groups
- F01D25/007—Preventing corrosion
-
- 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
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K2201/00—Specific properties of additives
- C08K2201/009—Additives being defined by their hardness
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K3/00—Use of inorganic substances as compounding ingredients
- C08K3/10—Metal compounds
- C08K3/14—Carbides
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K3/00—Use of inorganic substances as compounding ingredients
- C08K3/40—Glass
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D5/00—Coating compositions, e.g. paints, varnishes or lacquers, characterised by their physical nature or the effects produced; Filling pastes
- C09D5/04—Thixotropic paints
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D5/00—Coating compositions, e.g. paints, varnishes or lacquers, characterised by their physical nature or the effects produced; Filling pastes
- C09D5/08—Anti-corrosive paints
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D5/00—Coating compositions, e.g. paints, varnishes or lacquers, characterised by their physical nature or the effects produced; Filling pastes
- C09D5/08—Anti-corrosive paints
- C09D5/082—Anti-corrosive paints characterised by the anti-corrosive pigment
-
- 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
- F05D2230/90—Coating; Surface treatment
-
- 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
- F05D2260/00—Function
- F05D2260/95—Preventing corrosion
-
- 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
- F05D2300/50—Intrinsic material properties or characteristics
- F05D2300/506—Hardness
-
- 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
- F05D2300/60—Properties or characteristics given to material by treatment or manufacturing
- F05D2300/611—Coating
-
- 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
Definitions
- the invention relates to a coating composition for the coating of highly stressed components of Strömungsma machines, especially turbomachinery such as gas turbines with Ver denser, and compressors. Furthermore, the invention relates to a method for coating highly stressed components of turbomachines, such as turbomachinery, and compressors un ter use of such a coating composition. Furthermore, the invention relates to a method for servicing a turbomachine, in particular a turbomachine, or egg nes compressor using such a coating composition. Furthermore, the present invention relates to a component of a turbomachine, such as a Turboma machine, or a compressor, comprising a coating prepared using the aforementioned Be Schweizerungszu composition.
- turbomachines such as turbomachines, in particular gas turbines with a compressor, and compressors are subject to high loads during operation.
- components that are exposed to the fluid flow within the compres- sors or the turbomachine are exposed to the fluid flow within the compres- sors or the turbomachine.
- mechanical stresses for example, due to small particles that are carried along with the fluid flow, highlight. These can cause the collapse of there existing Be slaughterun conditions when impact on the surface of the components, which typically typi cally required for the operation of the components.
- the source of such particles are, for example, particles which enter the interior of the compressor or the turbomachine with the fluid, or particles which are formed by erosion processes in the interior of the compressor or turbomachine.
- the present invention relates to a coating composition for coating components of a turbomachine, in particular a turbomachine or a compressor, which are exposed to the fluid flow of the turbomachine or the compressor, wherein the coating composition comprises anticorrosive pigments, wherein the coating composition comprises hardstock particles, and wherein the coating composition is a RT (room temperature) curing, UV curing and / or thermosetting coating composition.
- RT room temperature
- hereby repairs can be carried out on site with little time, whereby the high demands on the subsequent load of the components when used in egg ner turbomachine or a compressor are met.
- good results could be obtained for the coating of, for example, components of a steam turbine.
- the Beschich composition according to the invention has proven to be advantageous for coating components of a turbomachine.
- particularly good results were achieved in the treatment of components in the area of the compressor of the turbomachine.
- Corresponding chende turbomachinery can be found, for example, in stationary ren operation for generating electricity or, for example, as a mobile units as a propulsion of aircraft.
- the present inven tion relates to a component of a turbomachine or a Kompres sors, which is suitable to be exposed to the fluid flow of the Strömungsma machine or the compressor, wherein the component on the side exposed to the fluid flow has a coating Be, by means of Inventive coating composition was obtained.
- the present inven tion relates to a method for servicing a turbomachine or a compressor using the Be coating composition according to the invention.
- the coating composition according to the invention can of course also be used, to coat new parts, however, it proved to be particularly advantageous during maintenance.
- the present inven tion relates to the use of the coating composition according to the invention composition for the maintenance of a turbomachine or a compressor.
- Figure 1 shows the detail of a schematic cross section of a turbomachine blade from the compressor of a turbomachine, which is damaged on the surface.
- Figure 2 shows the detail of a schematic cross-section of a turbomachinery blade, according to Figure 1, wherein the damaged area of the surface coating has been covered with a coating made by means of the coating composition according to the invention.
- Figure 3 shows the detail of a schematic cross-section of a turbomachinery blade, as shown in Figure 1, with the surface of the component smoothed after repair of the surface.
- the coating composition be either RT curing, UV curing or thermosetting.
- the combination of different curing mechanisms is possible, please include to obtain more complex coating compositions with FITS advantages.
- the coating composition be cured in at least two ways of the types mentioned. For example, it is advantageous to provide a coating composition that has both UV curing as well as RT is curing. By means of UV curing, a basic hardening can be achieved quickly.
- a final curing of the coating composition can take place based on a reaction with the water held in the air.
- the coating composition can generally be partially cured by UV light, in part, to allow direct handling of the coated articles.
- anti-corrosive pigments selected from the group consisting of aluminum particles, zinc particles and Mischun gene thereof. These anticorrosive pigments proved to be particularly advantageous for long term reliable
- the choice of hard material particles typically has a large impact on the long-term stability of the coating.
- the hard material particles comprise ceramic particles, glass particles, carbides and mixtures thereof.
- the hard material particles comprise particles from the group consisting of aluminum oxide particles, Siliziumoxidpar particles, carbides such as tungsten carbide and mixtures thereof.
- at least 50% by weight, more preferably at least 70% by weight, even more preferably at least 80% by weight, of the hard particles are particles of alumina, silica, carbides and mixtures thereof.
- the hard material particles consist of at least 99% by weight of alumina, silica, carbides or mixtures thereof.
- Particularly preferred hard material particles are aluminum oxide particles and silicon oxide particles, in particular silicon oxide particles. Furthermore, in further embodiments it is preferred if the total amount of the anticorrosive pigments and hard particles in the range of 10 wt .-% to 80 wt .-%, more preferably in the range of 18 wt .-% to 72 wt .-%, still more preferably in the range of 22% to 68% by weight, based on the total weight of the coating composition. For typical applications, it has proven particularly advantageous if the upper limit of the aforementioned total amount is further reduced.
- the total amount of the anticorrosive pigments and hard material particles is in the range from 10% by weight to 45% by weight, more preferably in the range from 18% by weight to 43% by weight, even more preferably in the range of 22 ° Wt .-% to 41 wt .-%.
- These embodiments are characterized in particular by an easy processable speed and, for example, can be applied particularly simply by means of application methods using a transfer medium for color transfer, such as a brush or a roller, without the protective effect being appreciably reduced in this case.
- a transfer medium for color transfer such as a brush or a roller
- spray methods can be used.
- the total weight of the coating composition here is the weight of the functional coating composition.
- the total weight of the coating composition also includes the weight of the hardener.
- the hard material particles have a D 5 o in the range of 10 gm to 70 gm, more preferably in the range of 13 pm to 60 pm, still more preferably in the range of 18 pm to 50 pm, exhibit.
- Such hard material particles appear to provide a particularly good mixture of easy applicability by means of customary processes, such as color transfer processes using, for example, brushes or rollers, and at the same time good long-term stability of the finished coating for typical applications.
- the term "D50" in the sense of the present invention be distinguished the particle size at which 50% of the particle size distribution below the above value. Preference, this is the volume-average particle size distribution by means of laser granulometry used.
- the measurements can be carried out, for example, with the particle size analyzer HELOS from Sympatec GmbH, Clausthal-Zellerfeld, Germany.
- the dispersion of a dry powder can take place here with a dispersion unit of the Rodos T4.1 type at a primary pressure of, for example, 4 bar.
- the size distribution curve of the particles can be measured, for example, using a Quantachrome device (Cilas 1064 device) in accordance with the manufacturer's instructions.
- a Quantachrome device Cosmeticas 1064 device
- 1.5 g of the powdery coating material are dispersed in about 100 ml of ethanol, treated for 300 seconds in an ultrasonic bath (device: Sonorex IK 52, Fa.
- Such coating compositions cure after application, for example, by evaporation of a solvent or by chemical reaction of the constituents of the coating composition.
- no UV radiation and no heating is required to activate the curing process, whereby the corresponding coating composition, for example after application to a poorly accessible site at e.g. 25 ° C hardens without further
- a particularly advantageous group of these coating compositions are the 2K- Coating composition activated by mixing the two components.
- these offer, in particular, very rapid curing after mixing of the components (stock paint and hardener). Since no activation in the applied state must be made by means of particular UV light or heat, a corresponding coating can also be applied to hard to reach areas of the turbomachine or the compressor and reliably cured quickly.
- Coating compositions comprising a stock varnish and a hardener, wherein the ratio of stock varnish to hardener in the range of 1: 1 to 7: 1, more preferably in the range of 1, 6: 1 to 6.5: 1, even more preferably in the range of 1 , 9: 1 to 6.2: 1.
- the 2K coating composition is an epoxy-based coating composition.
- Amine-curing epoxy resins in particular amine-curing aromatic epoxy resins, have proved to be particularly advantageous epoxy derivatives for the epoxy-based coating compositions. These were particularly advantageous for use in typical turbomachinery based on the use of high temperature fluids.
- a UV-curable coating composition it is preferable to use a UV-curable coating composition. This made it possible to deliver the finished lacquer well before the application and to apply it as needed. This is particularly particularly advantageous for the present application, since the ge exact need can be determined only after careful examination of the interior of the turbomachine or the compressor. Even if the potentially higher time required for a 2K coating composition is only slightly higher due to the new composition of the active coating composition, this represents a considerable advantage for the very time-critical maintenance case of a turbomachine or a compressor.
- corresponding UV-curing coating compositions also allow very rapid Curing processes in a few minutes. The targeted hardening of the irradiated areas also allows errors in the application, such as amounts of the coating composition dripped off, to be removed much later in a simple manner, for example by simple wiping.
- the coating composition comprises a thixotropic agent and wherein the viscosity is 40 to 240 seconds, preferably 50 to 200 seconds, more preferably 60 to 180 seconds more preferably set to 70 to 150 seconds, for a DIN 6 cup. Adjusting such viscosity allows easy application of the coating composition to a variety of oriented surfaces without the coating composition being too mild.
- the viscosity of the coating composition comprises a thixotropic agent and that the viscosity of the coating composition be in the range of 8,000 mPas to 32,000 mPas, more preferably in the range of 9,000 mPas to 30,000 mPas, even more preferably in the range of 10,000 mPas up to 27000 mPas, more preferably in the range of 11000 mPas to 25000 mPas.
- the viscosity can be measured, for example, with a Haake 500 viscometer.
- This surprisingly advantageous results were achieved, under difficult conditions with simple tools a reliable coating he can be kept.
- an excellent result can be achieved.
- the coating composition comprises at least one deaerator. This resulted in a further simplification of the application process, since in this case a particularly uniform result is achieved even with less cautious orders of the coating composition. In particular, to ensure uniform coating quality, even with different conditions and changing external maintenance personnel, he has such coating compositions be particularly advantageous.
- the inven tion proper component of a turbomachine or a com pressor is coated such that the coating composition of the invention is used to obtain the outermost coating layer or the second outermost coating layer. Since the coating obtained by means of the coating composition according to the invention provides a special protective effect, it has proven to be particularly advantageous if the corresponding layer of the coating is arranged at least largely outside. Although a sealing protective layer can still be applied to the coating layer according to the invention, it is particularly preferred for the layer obtained by means of the coating composition according to the invention to be disposed on the outside. Again, this typically achieves sufficient resistance and eliminates the additional step of additional sealing.
- the coating produced by means of the coating composition according to the invention has an average minimum thickness of 100 .mu.m, more preferably 150 .mu.m, even more preferably 190 .mu.m. In particular, it is possible to achieve stable coatings even under heavy loading.
- the average minimum thickness represents the arithmetic mean of the thickness of the coating measured perpendicular to the surface of the coated component.
- the coating composition according to the invention has proved to be particularly advantageous for applications in which average temperatures are reached during operation. In particular, a particularly good long-term stability can be observed in these areas. Therefore, the coating composition according to the invention is preferably used for a steam turbine, the compressor area of a turbomachine or a compressor, more preferably for the compressor range of a turbomachine or a compressor, more preferably for the compressor area of a turbomachine. Accordingly, the correspondingly coated components according to the invention preferably also originate from these specific machines or parts of the machines, and the method according to the invention and the use according to the invention preferably relate thereto.
- the flow machine is a turbomachine comprising a compressor, and wherein the component is selected from the group of blades and guide vanes in the compressor of the turbomachine or the blades and guide vanes in the compressor.
- turbomachinery components benefited very particularly be the use of the Beschich processing composition according to the invention.
- the coating composition of the invention proved to be particularly advantageous if the component to be serviced is coated on site. Especially in the case of preferred embodiments as mentioned above, excellent results can be achieved hereby also without much equipment.
- the coating composition according to the invention and in particular the abovementioned preferred embodiments is characterized in that, for typical maintenance operations, the waiting component often does not have to be removed from the turbomachine or the compressor. Rather, it is easily possible after opening the flow channel of the fluid to apply a new coating on the damaged components of the turbomachine or the compressor.
- the use according to the invention of the coating composition according to the invention preferably comprises the at least partial coating of at least one blade or vane of a compressor of the turbomachine or at least one blade or vane of the compressor.
- the use in the region of the compressor of a turbomachine has proven to be particularly preferred.
- Figure 1 shows the detail of a schematic cross section of a turbomachine blade 1 from the compressor of a turbomachine.
- FIG. 2 shows a detail of a schematic cross section of a turbomachine blade, as shown in FIG. 1.
- a brush is used to remove the damaged area of the coating with the turbomachinery.
- inventive coating composition comprising corrosion protection pigments and hard particles filled. This results in the coating 4.
- the turbomachine blade is repaired on site and thus allows a quick elimination of the damage found in the context of maintenance in order to restart the turbomachine very quickly.
- anticorrosive pigments here zinc pigments and hard particles as a mixture of equal proportions by weight of alumina particles with a D 5 o of 38 gm and silica particles with a D 5 o of 42 gm set a device of the type Cilas 1064 for measurement was set.
- the coating composition is a 2-component epoxy-based coating composition having a 4.5: 1 base to hardener weight ratio.
- the coating composition was added additives including thixotropic agents and deaerators.
- thixotropic agents By adding a thixotropic agent, the viscosity of the coating agent was adjusted so that a flow time of 100 seconds was achieved in a DIN 6 cup. This made it easy to apply the coating composition even on a vertical surface of the component without significant bleeding of the coating composition.
- the 2K coating composition cures and provides a coating which is durable enough to be exposed as the outermost layer of the turbomachine blade to the fluid flow inside the turbomachine.
- Figure 3 shows the detail of a schematic cross section of a turbomachinery blade, according to Figure 2, wherein the surface of the coating 4 of the component was mechanically smoothed after the repair of the surface.
- excess material of the cured coating composition was removed by means of a mechanical grinding process in order to provide a substantially planar surface.
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- Life Sciences & Earth Sciences (AREA)
- Wood Science & Technology (AREA)
- Organic Chemistry (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Nanotechnology (AREA)
- Inorganic Chemistry (AREA)
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Abstract
Description
Claims
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE102018205816.4A DE102018205816A1 (de) | 2018-04-17 | 2018-04-17 | Beschichtungszusammensetzung zur Oberflächenreparatur von Strömungsmaschinenbauteilen und Kompressorenbauteilen |
| PCT/EP2019/059743 WO2019201889A1 (de) | 2018-04-17 | 2019-04-16 | Beschichtungszusammensetzung zur oberflächenreparatur von strömungsmaschinenbauteilen und kompressorenbauteilen |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| EP3737720A1 true EP3737720A1 (de) | 2020-11-18 |
Family
ID=66334410
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP19720470.4A Pending EP3737720A1 (de) | 2018-04-17 | 2019-04-16 | Beschichtungszusammensetzung zur oberflächenreparatur von strömungsmaschinenbauteilen und kompressorenbauteilen |
Country Status (4)
| Country | Link |
|---|---|
| US (1) | US11867086B2 (de) |
| EP (1) | EP3737720A1 (de) |
| DE (1) | DE102018205816A1 (de) |
| WO (1) | WO2019201889A1 (de) |
Family Cites Families (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4606967A (en) * | 1983-10-19 | 1986-08-19 | Sermatech International Inc. | Spherical aluminum particles in coatings |
| US20080159870A1 (en) * | 2006-12-14 | 2008-07-03 | Hontek Corporation | Method and coating for protecting and repairing an airfoil surface using molded boots, sheet or tape |
| US7955694B2 (en) * | 2006-06-21 | 2011-06-07 | General Electric Company | Strain tolerant coating for environmental protection |
| US20090130304A1 (en) * | 2007-11-15 | 2009-05-21 | General Electric Company | Methods of forming composite powder coatings and articles thereof |
| US8147922B2 (en) * | 2009-09-18 | 2012-04-03 | General Electric Company | Composition and method for a thermal coating system |
| EP2767616A1 (de) * | 2013-02-15 | 2014-08-20 | Alstom Technology Ltd | Turbomaschinenkomponente mit einem erosions- und korrosionsbeständigen Beschichtungssystem und Verfahren zur Herstellung solch einer Komponente |
| US20150003996A1 (en) | 2013-07-01 | 2015-01-01 | General Electric Company | Fluorinated polymer based coatings and methods for applying the same |
| US20160215630A1 (en) | 2013-07-15 | 2016-07-28 | General Electric Company | Coating, coated turbine component, and coating process |
| JP6392027B2 (ja) * | 2013-08-30 | 2018-09-19 | 株式会社東芝 | タービン翼 |
| CN105440882B (zh) * | 2015-11-30 | 2017-08-15 | 中国航空工业集团公司北京航空材料研究院 | 一种纳米改性防腐蚀耐冲刷涂料及制备方法 |
| GB2560516B (en) * | 2017-03-13 | 2019-08-28 | Rolls Royce Plc | A method of manufacturing a coated turbine blade and a coated turbine vane |
| CN108047894B (zh) | 2017-12-04 | 2020-11-10 | 东方电气集团东方汽轮机有限公司 | 一种抗腐蚀涂料及其用途 |
| CN108395785A (zh) | 2018-03-29 | 2018-08-14 | 合肥励仙电力工程有限公司 | 一种电力设备表层用防腐涂料及其制备方法 |
-
2018
- 2018-04-17 DE DE102018205816.4A patent/DE102018205816A1/de not_active Withdrawn
-
2019
- 2019-04-16 WO PCT/EP2019/059743 patent/WO2019201889A1/de not_active Ceased
- 2019-04-16 EP EP19720470.4A patent/EP3737720A1/de active Pending
- 2019-04-16 US US17/044,806 patent/US11867086B2/en active Active
Also Published As
| Publication number | Publication date |
|---|---|
| US20210156268A1 (en) | 2021-05-27 |
| WO2019201889A1 (de) | 2019-10-24 |
| DE102018205816A1 (de) | 2019-10-17 |
| US11867086B2 (en) | 2024-01-09 |
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