EP2847436A1 - Aube de soufflante de turbine résistant à l'usure - Google Patents

Aube de soufflante de turbine résistant à l'usure

Info

Publication number
EP2847436A1
EP2847436A1 EP12721679.4A EP12721679A EP2847436A1 EP 2847436 A1 EP2847436 A1 EP 2847436A1 EP 12721679 A EP12721679 A EP 12721679A EP 2847436 A1 EP2847436 A1 EP 2847436A1
Authority
EP
European Patent Office
Prior art keywords
fan blade
turbine fan
approximately
metallic layer
turbine
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.)
Withdrawn
Application number
EP12721679.4A
Other languages
German (de)
English (en)
Inventor
J. David Booze
Clifford K. Deakyne
Frederic Pailler
James E. Weishampel
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
EIDP Inc
Original Assignee
EI Du Pont de Nemours and Co
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Priority claimed from US13/469,349 external-priority patent/US20130302170A1/en
Priority claimed from US13/469,368 external-priority patent/US20130302173A1/en
Priority claimed from US13/469,181 external-priority patent/US20130303413A1/en
Application filed by EI Du Pont de Nemours and Co filed Critical EI Du Pont de Nemours and Co
Publication of EP2847436A1 publication Critical patent/EP2847436A1/fr
Withdrawn legal-status Critical Current

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
    • C10M111/00—Lubrication compositions characterised by the base-material being a mixture of two or more compounds covered by more than one of the main groups C10M101/00 - C10M109/00, each of these compounds being essential
    • C10M111/04—Lubrication compositions characterised by the base-material being a mixture of two or more compounds covered by more than one of the main groups C10M101/00 - C10M109/00, each of these compounds being essential at least one of them being a macromolecular organic compound
    • C—CHEMISTRY; METALLURGY
    • C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
    • C10M107/00—Lubricating compositions characterised by the base-material being a macromolecular compound
    • C10M107/40—Lubricating compositions characterised by the base-material being a macromolecular compound containing nitrogen
    • C10M107/44—Macromolecular compounds obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds
    • C—CHEMISTRY; METALLURGY
    • C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
    • C10M169/00—Lubricating compositions characterised by containing as components a mixture of at least two types of ingredient selected from base-materials, thickeners or additives, covered by the preceding groups, each of these compounds being essential
    • C10M169/04—Mixtures of base-materials and additives
    • D—TEXTILES; PAPER
    • D02—YARNS; MECHANICAL FINISHING OF YARNS OR ROPES; WARPING OR BEAMING
    • D02G—CRIMPING OR CURLING FIBRES, FILAMENTS, THREADS, OR YARNS; YARNS OR THREADS
    • D02G3/00—Yarns or threads, e.g. fancy yarns; Processes or apparatus for the production thereof, not otherwise provided for
    • D02G3/02—Yarns or threads characterised by the material or by the materials from which they are made
    • 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
    • F01D5/282—Selecting composite materials, e.g. blades with reinforcing filaments
    • 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
    • F01D5/30—Fixing blades to rotors; Blade roots ; Blade spacers
    • F01D5/3092—Protective layers between blade root and rotor disc surfaces, e.g. anti-friction layers
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
    • F16D69/00—Friction linings; Attachment thereof; Selection of coacting friction substances or surfaces
    • F16D69/02—Composition of linings ; Methods of manufacturing
    • C—CHEMISTRY; METALLURGY
    • C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
    • C10M2201/00—Inorganic compounds or elements as ingredients in lubricant compositions
    • C10M2201/04—Elements
    • C10M2201/041—Carbon; Graphite; Carbon black
    • C10M2201/0413—Carbon; Graphite; Carbon black used as base material
    • C—CHEMISTRY; METALLURGY
    • C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
    • C10M2201/00—Inorganic compounds or elements as ingredients in lubricant compositions
    • C10M2201/04—Elements
    • C10M2201/05—Metals; Alloys
    • C10M2201/053—Metals; Alloys used as base material
    • C—CHEMISTRY; METALLURGY
    • C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
    • C10M2209/00—Organic macromolecular compounds containing oxygen as ingredients in lubricant compositions
    • C10M2209/10—Macromolecular compoundss obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds
    • C10M2209/101—Condensation polymers of aldehydes or ketones and phenols, e.g. Also polyoxyalkylene ether derivatives thereof
    • C10M2209/1013—Condensation polymers of aldehydes or ketones and phenols, e.g. Also polyoxyalkylene ether derivatives thereof used as base material
    • C—CHEMISTRY; METALLURGY
    • C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
    • C10M2213/00—Organic macromolecular compounds containing halogen as ingredients in lubricant compositions
    • C10M2213/06—Perfluoro polymers
    • C10M2213/062—Polytetrafluoroethylene [PTFE]
    • C—CHEMISTRY; METALLURGY
    • C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
    • C10M2213/00—Organic macromolecular compounds containing halogen as ingredients in lubricant compositions
    • C10M2213/06—Perfluoro polymers
    • C10M2213/062—Polytetrafluoroethylene [PTFE]
    • C10M2213/0623—Polytetrafluoroethylene [PTFE] used as base material
    • C—CHEMISTRY; METALLURGY
    • C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
    • C10M2217/00—Organic macromolecular compounds containing nitrogen as ingredients in lubricant compositions
    • C10M2217/04—Macromolecular compounds from nitrogen-containing monomers obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds
    • C10M2217/044—Polyamides
    • C10M2217/0443—Polyamides used as base material
    • C—CHEMISTRY; METALLURGY
    • C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10N—INDEXING SCHEME ASSOCIATED WITH SUBCLASS C10M RELATING TO LUBRICATING COMPOSITIONS
    • C10N2020/00—Specified physical or chemical properties or characteristics, i.e. function, of component of lubricating compositions
    • C10N2020/01—Physico-chemical properties
    • C10N2020/055—Particles related characteristics
    • C10N2020/063—Fibrous forms
    • C—CHEMISTRY; METALLURGY
    • C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10N—INDEXING SCHEME ASSOCIATED WITH SUBCLASS C10M RELATING TO LUBRICATING COMPOSITIONS
    • C10N2030/00—Specified physical or chemical properties which is improved by the additive characterising the lubricating composition, e.g. multifunctional additives
    • C10N2030/06—Oiliness; Film-strength; Anti-wear; Resistance to extreme pressure
    • C—CHEMISTRY; METALLURGY
    • C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10N—INDEXING SCHEME ASSOCIATED WITH SUBCLASS C10M RELATING TO LUBRICATING COMPOSITIONS
    • C10N2030/00—Specified physical or chemical properties which is improved by the additive characterising the lubricating composition, e.g. multifunctional additives
    • C10N2030/08—Resistance to extreme temperature
    • C—CHEMISTRY; METALLURGY
    • C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10N—INDEXING SCHEME ASSOCIATED WITH SUBCLASS C10M RELATING TO LUBRICATING COMPOSITIONS
    • C10N2040/00—Specified use or application for which the lubricating composition is intended
    • C10N2040/12—Gas-turbines
    • C10N2040/13—Aircraft turbines
    • C—CHEMISTRY; METALLURGY
    • C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10N—INDEXING SCHEME ASSOCIATED WITH SUBCLASS C10M RELATING TO LUBRICATING COMPOSITIONS
    • C10N2050/00—Form in which the lubricant is applied to the material being lubricated
    • C10N2050/023—Multi-layer lubricant coatings
    • C10N2050/025—Multi-layer lubricant coatings in the form of films or sheets
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
    • F05C—INDEXING SCHEME RELATING TO MATERIALS, MATERIAL PROPERTIES OR MATERIAL CHARACTERISTICS FOR MACHINES, ENGINES OR PUMPS OTHER THAN NON-POSITIVE-DISPLACEMENT MACHINES OR ENGINES
    • F05C2251/00—Material properties
    • F05C2251/14—Self lubricating materials; Solid lubricants
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
    • F05C—INDEXING SCHEME RELATING TO MATERIALS, MATERIAL PROPERTIES OR MATERIAL CHARACTERISTICS FOR MACHINES, ENGINES OR PUMPS OTHER THAN NON-POSITIVE-DISPLACEMENT MACHINES OR ENGINES
    • F05C2253/00—Other material characteristics; Treatment of material
    • 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
    • F05D2220/00—Application
    • F05D2220/30—Application in turbines
    • F05D2220/36—Application in turbines specially adapted for the fan of turbofan engines
    • 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
    • F05D2300/509—Self lubricating materials; Solid lubricants

Definitions

  • the disclosure generally relates to wear resistant turbine fan blades; more particularly tc wear resistant turbine fan blades having a composite lubricating sheet adhered to a root of the turbine fan blade.
  • a wear resistant turbine fan blade is used to prevent or to reduce friction and wear when in sustained contact with other objects due to relative motion of both under high loa and/or frictional forces.
  • a first aspect of the present invention relates to a wear resistant turbine fan blade comprising: a composite lubricating sheet adhered to a root of the turbine fan blade, wherein th composite lubricating sheet comprises: a fabric at least partially embedded with a resin, the fabric including an aromatic polyamide yarn, and a mixed yarn having the aromatic polyamide yarn and a low-friction yarn; and a metallic layer adhered to one side of the fabric.
  • a second aspect of the present invention relates to a turbine engine including at least on turbine fan blade having a composite lubricating sheet adhered to a root of the turbine fan blade wherein the composite lubricating sheet comprises: a fabric at least partially embedded by a resin, the fabric including an aromatic polyamide yarn and a mixed yarn having the aromatic polyamide yarn and a low- friction yarn; and a metallic layer adhered to one side of the resin embedded fabric.
  • FIG. 1 depicts an embodiment of a wear resistant turbine fan blade, in accordance with the present disclosure.
  • FIG. 2 depicts an embodiment of a wear resistant turbine fan blade in use with a rotor disk. It is noted that the drawings of the invention are not to scale. The drawings are intended to depict only typical aspects of the invention, and therefore should not be considered as limiting the scope of the invention. In the drawings, like numbering represents like elements between drawings.
  • Fan blades used in the aerospace industry, and in particular, in turbine engines are often subjected to high pressure loads and high frictional forces between the fan blades and other objects in contact with the fan blades resulting in surface wear and crack formation due to fatigue stress of the fan blades and/or objects in turbine engines.
  • Improvements in the wear resistance of fan blades is sought so as to improve the lifespan of the fan blades and/or objects in contact with the fan blades; to reduce the maintenance time of turbine engines; and to increase the operational time of a device, assembly, airplane, etc. that incorporate such fan blades.
  • Wear means the deterioration of any properties of a solid surface by the action of another surface. The deteriorated properties may include, but are not limited to, thickness, smoothness, hardness, strength, and/or integrity. It has been discovered that the wear resistance of a fan blade may be improved or increased by having a composite lubricating sheet adhered to a root of the fan blade where the composite lubricating sheet has a metallic layer.
  • FIG. 1 An embodiment of a wear resistant turbine fan blade is shown in FIG. 1, in accordance with the present disclosure.
  • a wear resistant turbine fan blade 2 is shown having composite lubricating sheets (CLS) 8 adhered thereon.
  • CLSs 8 are adhered to a root 9 of turbine fan blade 2.
  • Reference 5 connotes that turbine fan blade 2 may continue beyond reference 5 to form a larger, complete turbine fan blade.
  • Turbine fan blade 2 may be an integrated component in a turbine engine, a rotor disk, and a rotor disk assembly.
  • Turbine fan blade 2 may comprise a metal selected from titanium, aluminum, steel, nickel, and alloys thereof.
  • turbine fan blade 2 may comprise titanium.
  • turbine fan blade 2 may comprise steel.
  • turbine fan blade may comprise aluminum.
  • CLS 8 may comprise a fabric 6 and a metallic layer 7 adhered to one side of fabric 6.
  • Fabric 6 may be at least partially embedded with a resin, and may include an aromatic polyamide yarn and a mixed yarn having the aromatic polyamide yarn and a low-friction yarn.
  • the aromatic polyamide yarn may be a plurality of fibers in a bundle, including fiber comprising an aromatic polyamide, used for weaving.
  • the aromatic polyamide yarn may include yarns made from but not limited to poly(para-phenylene terephthalamide), poly(meta-phenylene terephthalamide), poly(meta-phenylene isophthalamide), poly(para-phenylene isophthalamide), combinations thereof, and copolymers thereof.
  • the low- friction yarn may be a yarn having a coefficient of friction (COF) against itself which is lower than the COF of the aromatic polyamide yarn against itself.
  • the low- friction yarn may comprise graphite or a fluoropolymer.
  • the low- friction yarn may comprise graphite fiber or a fluoropolymer fiber.
  • the fluoropolymer fiber may be polytetrafluoroethylene fiber.
  • Resin embedded fabric 6 may be at least partially embedded with a resin selected from, but not limited to, a phenolic resin, an epoxy resin, or a polyimide resin.
  • the phenolic resin may comprise phenol-formaldehyde.
  • Metallic layer 7 may comprise a metal selected from titanium, aluminum, steel, and nickel. In an embodiment, metallic layer 7 may be titanium. In another embodiment, metallic layer 7 may be steel. Metallic layer 7 may have a thickness in a range from approximately 20 microns to approximately 1,000 microns. In an embodiment, metallic layer 7 may have a thickness in a range from approximately 50 microns to approximately 250 microns. In another embodiment, metallic layer 7 may have a thickness in a range from approximately 70 microns to approximately 100 microns. In another embodiment, metallic layer 7 may have a thickness of approximately 90 microns.
  • Metallic layer 7 may be in the form a metallic foil.
  • the metallic foil may be a thin, flexible sheet of titanium, aluminum, steel, or nickel.
  • metallic layer 7 may be a titanium foil.
  • the metallic foil may have a thickness in a range from approximately 20 microns to approximately 1,000 microns. In another
  • the metallic foil may have a thickness in a range from approximately 50 microns to approximately 250 microns. In another embodiment, the metallic foil may have a thickness in a range from approximately 70 microns to approximately 100 microns. In another embodiment, the metallic foil may have a thickness of approximately 90 microns.
  • Metallic layer 7 may be adhered to one side of resin embedded fabric 6.
  • metallic layer 7 may be a pure metal comprising a single metallic element.
  • metallic layer 7 may be a metal alloy comprising two or more metallic elements. When two or more metallic elements are a part of metallic layer 7, any element may be a major or predominant element by weight percent.
  • elements present in metallic layer 7 include, but are not limited, to titanium, iron, aluminum, copper, nickel, zinc, tungsten, molybdenum, tin, and cobalt. Any of the aforementioned elements may be the major or predominant element by weight percent.
  • Metallic layer 7 may have a Vickers hardness value HV of approximately 30 or greater at a load of 100 g applied for 20 seconds according to ASTM E-384. In an embodiment, metallic layer 7 may have a Vickers HV of approximately 100 or greater. In another embodiment, metallic layer 7 may have a Vickers HV of approximately 200 or greater. In another
  • metallic layer 7 may have a Vickers HV of approximately 300 or greater.
  • composite lubricating sheet 8 having a titanium metallic layer 7 is Vespel ® ASB-0670 product grade available from E.I. du Pont de Nemours and Company.
  • Other Vespel ® composite lubricating sheet 8 product grades may include metallic layer 7 being steel, aluminum, or nickel.
  • Composite lubricating sheet (CLS) 8 may have a thickness in a range from 30 microns to 3 mm. In embodiment, CLS 8 may have a thickness in a range from 50 microns to 1 mm. In another embodiment, the thickness may be in a range from 100 microns to 750 microns.
  • CLS 8 may have a Compression Fraction value in a range from 0.1% (0.001) to approximately 20% (0.20) with a pressure applied by compressing at approximately 127 microns/minute up to approximately 450 MPa and then released.
  • Compression Fraction means the fraction of thickness lost due to compression under specific conditions.
  • composite lubricating sheet 8 may have a Compression Fraction value in a range from 1% (0.010) to approximately 5.7% (0.057).
  • the Compression Fraction value may be in a range from 1.3% (0.013) to approximately 3% (0.030).
  • Compression Fraction value embodiments may be determined with a pressure applied by compressing at approximately 127 microns/minute up to approximately 450 MPa and then released.
  • CLS 8 may be adhered to turbine fan blade root 9 to form wear resistant turbine fan blade
  • CLS 8 may be achieved through physical or chemical bonding.
  • an adhesive such as thermoplastic adhesive, a thermoset adhesive, and other bonding adhesives known in the art.
  • metallic layer 7 may be adhered to blade root 9.
  • the thermoset adhesive may be an epoxy adhesive.
  • the bonding adhesive layer may have a thickness in range from approximately 2 microns to 2,000 microns.
  • the thickness may be in a range from approximately 10 microns to 100 microns. In another embodiment, the thickness may be in a range from approximately 20 microns to 80 microns.
  • the surface of metallic layer 7 to be adhered to blade root 9 and/or the surface of blade root 9 may be surface treated.
  • Surface treatment may be performed by any known process in the art to treat a metallic surface.
  • surface treatment may be performed by a peening process. Typical peening processes involve the impacting a surface with numerous, small particles.
  • An example of a peening process is shot peening.
  • the shot-peened, roughened surface may have a characteristic roughness identifiable by the appearance of small craters in the surface.
  • surface treatment may include sandblasting the surface of metallic layer 7 to be adhered to blade root 9 and/or sandblasting the surface of blade root 9.
  • surface treatment may include chemical etching of the surface of metallic layer 7 to be adhered to blade root 9 and/or chemical etching the surface of blade root 9.
  • surface treatment may include belt sanding of the surface of metallic layer 7 to be adhered to blade root 9 and/or belt sanding the surface of blade root 9.
  • the aforementioned surface treatments may be performed in combination to treat the surface of metallic layer 7 and/or the surface of blade root 9.
  • the surface of metallic layer 7 to be adhered to blade root 9 may be first shot-peened and then the shot peened surface may be treated by sandblasting prior to adhesion to blade root 9.
  • the wear resistant turbine fan blade 2 disclosed herein may typically come in sustained contact and movement, through resin embedded fabric 6 of composite lubricating sheet 8, with another object(s) under a high pressure load and under vibratory, reciprocating, and/or circular motions.
  • the high pressure load may be in a range from approximately 100 MPa to approximately 600 MPa.
  • Wear resistant turbine fan blade 2 in sustained contact with another object may have a Coefficient of Friction (COF) value in a range from 0.01 to 0.1.
  • the COF value may be less than approximately 0.05.
  • the COF value may be less than 0.04.
  • wear resistant turbine fan blade 2 may be demonstrated by measuring the durability of CLS 8 under controlled pressure and wear conditions.
  • Wear under pressure may be demonstrated, for example, by: providing a body having a surface subject to wear, such as a titanium block with a known roughness; adhering to the surface subject to wear composite lubricating sheet 8 wherein the adhering occurs between the metallic layer 7 and the titanium surface subject to wear; providing an object having a wear surface such as another titanium block; aligning resin embedded fabric 6 of CLS 8 with the wear surface of the other object with a pressure in a range from approximately 210 MPa to approximately 500 MPa; and causing resin embedded fabric 6 of CLS 8 to be in sustained contact with the surface of the other object.
  • HV Vickers Hardness values
  • CCS composite lubricating sheet
  • CLS 8 of the present disclosure may be resistant to crushing by compressive forces.
  • a suitable test for resistance to compressible forces is to determine the fraction of compression that a strong compressive force produces.
  • Table 2 lists Compression Fraction percentage values for CLS 8 having various metallic layers 7 and an entry (10) for CLS 8 without a metallic layer for comparison.
  • CLS test samples 2, 3, and 4 are representative samples of Vespel ASB-0670 product grade available from E.I. du Pont de Nemours and Company in which the metallic layer is titanium.
  • CLS test samples 1, 5, and 6 are representative samples of other Vespel ® composite lubricating sheet 8 product grades in which the metallic layer 7 is steel (Fe) and aluminum.
  • CLS test sample CI is a comparative sample in which it does not have a metallic layer 7.
  • Compression fraction percentage values of CLSs 8 were determined using a Mitutoyo IP 54 micrometer and an Instron 1332 fatigue system with n 8800 controller.
  • the Mitutoyo IP 54 micrometer was used to measure thickness of CLS by first measuring the initial thickness of a CLS square of approximately 25 mm by approximately 25 mm.
  • the Instron 1332 fatigue system was used to apply compressive loads to the CLS square.
  • the measured CLS square was then compressed with a 10 mm by 10 mm shot-peened surfaced Ti block to 450 MPa applied at 0.05 inch/min (1270 microns/min) using the Instron 1332 fatigue system.
  • 450 MPa pressure was achieved, the pressure was released and measurement of the final thickness of the CLS square was made within one minute using the Mitutoyo IP 54 micrometer.
  • CLS 8 of the present disclosure may be resistant to crushing by compressive forces and wear through rubbing/frictional forces.
  • a suitable test for resistance to compressible forces and simultaneous frictional force is to determine the Minimum Strokes number CLS 8 may sustain before succumbing to failure.
  • Table 3 lists Minimum Strokes values for CLS 8 having a titanium metallic layer 7 and for CLS 8 without a metallic layer for comparison. Table 3.
  • CLS test samples 1 and 2 are representative samples of Vespel ASB-0670 product grade available from E.I. du Pont de Nemours and Company in which the metallic layer is titanium.
  • CLS test sample CI is a comparative sample in which it does not have a metallic layer 7.
  • Minimum Strokes values of CLSs 8 in use with a metal substrate were determined using an Instron 1321 fatigue system with an 8800 controller. The Minimum Strokes values were reported as the number of reciprocating test strokes of 1.2 mm in length applied at 10 Hz accomplished by the relative motion of the article with respect to resin embedded fabric layer 6 of CLS 8.
  • the resin embedded fabric layer 6 of CLS 8 was lightly coated with a lubricant containing a fluorochemical by spraying or painting the lubricant on the surface of the resin embedded fabric layer 6.
  • the spraying or coating provides a thin translucent to an opaque coating of lubricant.
  • CLS 8 was adhered to a stationary metal substrate by an epoxy adhesive such as for example, NB 101 available from Newport Adhesives and Composites, Inc; Irvine, CA.
  • the stationary metal substrate was a sandblasted, 20 mm by 20 mm titanium block with a peen- hardened surface having a Rockwell C33 hardness.
  • the metallic layer of CLS 8 was adhered to the titanium block with resin embedded fabric layer 6 of CLS 8 facing away from the titanium block.
  • the adhesive was oven cured under low pressure (approximately 5 psi) comprising a first heating step to approximately 79° C for 90 min and then a second heating step to approximately 149° C for an hour.
  • the titanium block was then mounted in the lower carrier of the Instron 1321 with CLS 8 facing up.
  • a second titanium block with a peen-hardened surface (Rockwll C33 hardness) measuring approximately 10 mm by 10 mm and microns was mounted in an upper carrier of the Instron 1321 and brought into parallel reversible contact with CLS 8 aligned in the center of the titanium block in the lower carrier.
  • the pressure between the blocks was raised to 400 MPa, and reciprocating strokes were applied at a rate of 10 forward and 10 backward strokes per second with a stroke length of 1.2 mm.
  • Testing was run until the onset of failure, i.e., a corner of the 10 mm by 10 mm titanium block penetrated resin embedded fabric layer 6 of CLS 8.
  • the Minimum Strokes value represents the number of strokes to reach test specimen failure. The larger the Minimum Strokes value, the better the performance of CLS 8.
  • FIG. 2 Another embodiment of a wear resistant turbine fan blade is shown in FIG. 2, in accordance with the present invention.
  • a wear resistant turbine fan blade 2 is shown having composite lubricating sheets (CLS) 8 adhered on turbine fan blade root 9.
  • CLS composite lubricating sheets
  • Turbine fan blade 2 may be an integrated component in a turbine engine.
  • Embodiments of turbine fan blade 2 and CLS 8 have been previously described and are herein incorporated by reference in their entirety.
  • CLSs 8 may protect fan blade root 9 from deterioration when in use with, for example, a rotor disk 26.
  • the forces and loads experienced between fan blade root 9 and rotor disk 26 during operation of a turbine engine are known in the art. Performance characteristics of composite lubricating sheet 8 have been previously described and are herein incorporated by reference in their entirety. The performance tests conducted are representative of the forces and loads experienced between fan blade root 9 and rotor disk 26 during operation of a turbine engine.
  • CLS 8 may be adhered to a metal substrate such as a shim, metallic layer, or any part already adhered to fan blade root 9.
  • the shim, metallic layer, etc. may comprise a metal selected from titanium or steel.
  • the turbine engine may include at one turbine fan blade having a composite lubricated sheet adhered thereon.
  • Embodiments and performance characteristics of the composite lubricating sheet have been previously described and are herein incorporated by reference in their entirety.
  • Embodiments of the turbine fan blade having a composite lubricating sheet adhered therein have been previously described.
  • first”, “second”, and the like, herein do not denote any order, quantity, or importance, but rather are used to distinguish one element from another, and the terms “a” and “an” herein do not denote a limitation of quantity, but rather denotes the presence of at least one of the referenced items.
  • the modifier “about” used in connection with a quantity is inclusive of the state value and has the meaning dictated by the context, (e.g., includes the degree of error associated with measurement of the particular quantity).
  • the suffix "(s)” as used herein is intended to include both the singular and the plural of the term that it modifies, thereby including one or more of that term (e.g., the metal(s) includes one or more metals).
  • Ranges disclosed herein are inclusive and independently combinable (e.g., ranges of "to approximately 25 wt %, or, more specifically, approximately 5 wt % to approximately 20 wt %", is inclusive of the endpoints and all intermediate values of ranges of "approximately 5 wt % to approximately 25 wt %", etc.)

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  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Oil, Petroleum & Natural Gas (AREA)
  • Organic Chemistry (AREA)
  • General Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Materials Engineering (AREA)
  • Textile Engineering (AREA)
  • Composite Materials (AREA)
  • Laminated Bodies (AREA)
  • Structures Of Non-Positive Displacement Pumps (AREA)
  • Turbine Rotor Nozzle Sealing (AREA)

Abstract

L'invention concerne, d'une manière générale, une aube de soufflante de turbine résistant à l'usure, qui présente une feuille lubrifiée composite adhérant à l'emplanture et qui possède des propriétés tribologiques améliorées à températures élevées.
EP12721679.4A 2012-05-11 2012-05-14 Aube de soufflante de turbine résistant à l'usure Withdrawn EP2847436A1 (fr)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
US13/469,349 US20130302170A1 (en) 2012-05-11 2012-05-11 Rotor disk and rotor assembly
US13/469,368 US20130302173A1 (en) 2012-05-11 2012-05-11 Wear resistant turbine fan blade
US13/469,181 US20130303413A1 (en) 2012-05-11 2012-05-11 Wear resistant article
PCT/US2012/037826 WO2013169271A1 (fr) 2012-05-11 2012-05-14 Aube de soufflante de turbine résistant à l'usure

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EP2847436A1 true EP2847436A1 (fr) 2015-03-18

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EP12725185.8A Withdrawn EP2847437A1 (fr) 2012-05-11 2012-05-14 Article résistant à l'usure
EP12721679.4A Withdrawn EP2847436A1 (fr) 2012-05-11 2012-05-14 Aube de soufflante de turbine résistant à l'usure

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JP (2) JP2015517416A (fr)
RU (1) RU2014150077A (fr)
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DE102016201523A1 (de) 2016-02-02 2017-08-03 MTU Aero Engines AG Schaufel einer Strömungsmaschine mit Schaufelfusswärmedämmung
KR20210090941A (ko) 2020-01-13 2021-07-21 한화에어로스페이스 주식회사 팬 블레이드 조립체

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US3781205A (en) * 1970-02-02 1973-12-25 Garlock Inc Composite bearings
CA1031024A (fr) * 1974-10-01 1978-05-09 Textron Inc. Palier revetu de tissu a faible resistance au frottement et methode de fabrication connexe
ES8705951A1 (es) * 1985-05-17 1987-06-01 Raychem Corp Metodo para fabricar un cojinete de tejido y cojinete, correspondiente.
US5229198A (en) * 1992-05-18 1993-07-20 Pacific Bearing Co. Bearing material having a matrix impregnated with polymeric resin
EP0585874B1 (fr) * 1992-09-04 1997-03-12 Hoechst Aktiengesellschaft Fil mélangé pour la fabrication de la couche de glissement de paliers à contact lisse en matières thermoplastiques renforcées par des fibres
FR2890126B1 (fr) * 2005-08-26 2010-10-29 Snecma Ensemble et procede pour le montage du pied d'une aube de turbomachine, soufflante, compresseur et turbomachine comportant un tel ensemble

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Title
See references of WO2013169271A1 *

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Publication number Publication date
EP2847437A1 (fr) 2015-03-18
WO2013169271A1 (fr) 2013-11-14
JP2015517622A (ja) 2015-06-22
RU2014150077A (ru) 2016-07-10
WO2013169270A1 (fr) 2013-11-14
JP2015517416A (ja) 2015-06-22
WO2013169272A1 (fr) 2013-11-14

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