METHOD FOR PRODUCING A HOLLOW FAN BLADE

A method for manufacturing a hollow fan blade of a titanium alloy, said blade consisting of skins and a filler forming stiffeners, comprises the step of working skin workpieces with a preformed blade root portion, during which working on surfaces of the skin workpieces, areas to be bonded to a fille...

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Bibliographische Detailangaben
Hauptverfasser:	KOKSHAROV, NIKOLAY LEONIDOVICH, MULYUKOV, RADIK RAFIKOVICH, SAIRANOV, AZAT NAILIEVICH, LUTFULLIN, RAMIL YAVATOVICH, KLIMOV, VALERY NIKOLAEVICH, ANDREYCHENKO, IGOR LEONARDOVICH, MUKHAMETRAKHIMOV, MINNAUL KHIDIYATOVICH, SAFIULLIN, RINAT VLADIKOVICH, RUDENKO, OLEG ALEXANDROVICH, MOROZOV, MIKHAIL ALEXANDROVICH, KHARIN, SERGEY ALEXANDROVICH, DONGAUZER, KONSTANTIN ALEXANDROVICH, KRUGLOV, ALEXEY ANATOLIEVICH
Format:	Patent
Sprache:	eng ; fre ; ger
Schlagworte:	BLASTING CLADDING OR PLATING BY SOLDERING OR WELDING CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TOTRANSPORTATION COMBINED OPERATIONS CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING ENGINE PLANTS IN GENERAL GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS HEATING INDEXING SCHEME FOR ASPECTS RELATING TONON-POSITIVE-DISPLACEMENT MACHINES OR ENGINES, GAS-TURBINES ORJET-PROPULSION PLANTS INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUSSUBCLASSES OF CLASSES F01-F04 LIGHTING MACHINE TOOLS MACHINES OR ENGINES IN GENERAL MAKING FORGED OR PRESSED METAL PRODUCTS, e.g. HORSE-SHOES,RIVETS, BOLTS OR WHEELS MECHANICAL ENGINEERING MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVINGMATERIAL METAL-WORKING NOT OTHERWISE PROVIDED FOR NON-POSITIVE DISPLACEMENT MACHINES OR ENGINES, e.g. STEAMTURBINES OTHER WORKING OF METAL PERFORMING OPERATIONS PUNCHING METAL SOLDERING OR UNSOLDERING STEAM ENGINES TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINSTCLIMATE CHANGE TRANSPORTING UNIVERSAL MACHINE TOOLS WEAPONS WELDING WORKING BY LASER BEAM WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS ORPROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL
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Beschreibung
Zusammenfassung:	A method for manufacturing a hollow fan blade of a titanium alloy, said blade consisting of skins and a filler forming stiffeners, comprises the step of working skin workpieces with a preformed blade root portion, during which working on surfaces of the skin workpieces, areas to be bonded to a filler workpiece are shaped in the form of projections with a surface flat in a cross-section, and areas to be not bonded to the filler workpiece are shaped in the form of recesses, respectively, wherein at least a part of a surface of recesses opposite to projections in a stack assembled for diffusion welding is made flat in a cross-section, and also comprises the steps of: applying a bond preventing coating onto surfaces of workpiece areas to be not bonded; assembling the skin and filler workpieces into a stack; diffusion welding the skin and filler workpieces; forming stiffeners by superplastic forming, the method further comprises the step of providing the skin and filler workpieces with an aerodynamic profile by applying a deforming load thereto, including forming a pressure face and a suction face of the blade and twisting its airfoil. The method is characterized in that said projections and recesses are made on the surfaces of the skin workpieces prior to providing them with the aerodynamic profile, while the step of providing the workpieces with the aerodynamic profile is performed after diffusion welding. The method is particularly applicable to aircraft engine building.