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4411715 |
Method of enhancing rotor bore cyclic life
A method of enhancing or prolonging the low cycle fatigue life of the bore area of a rotating disk. The method comprises the step of prestressing the bore area by heating the web/rim area of the...
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4406698 |
Martensitic stainless cast steel having high cavitation erosion resistance
Martensitic stainless cast steel suitable for use as turbine elements for water power plants having high cavitation erosion resistance and consisting essentially of carbon of 0.1 wt % or less,...
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4401480 |
Method of selective grain growth in nickel-base superalloys by controlled boron diffusion
This is a method for producing a composite grain structure in nickel-base superalloy articles by causing a controlled amount of grain growth in selected regions. The method uses alloys containing...
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4370789 |
Fabrication of gas turbine water-cooled composite nozzle and bucket hardware employing plasma spray process
In the method for fabrication of water-cooled composite nozzle and bucket hardware for high temperature gas turbines, a high thermal conductivity copper alloy is applied, employing a high...
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4371312 |
Bucket for an adjustable turbine inlet guide baffle system
A bucket for an adjustable turbine guide baffle system for gas turbines is formed of an alloy material comprised of a dispersion-strengthened Fe-Cr-Al alloy containing 64.5-75.5% by weight of Fe,...
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4365897 |
Separable blade agitator with clip-on impellers
A separable blade agitator having the impeller blades joined to the drive shaft in an interference fit effected by a hub on one of the separable impellers which embraces both the shaft and the...
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RE31104 |
Catalytic structure
Foil, wire and similar coherent bodies of catalytic metal are provided with catalytically active surfaces by diffusing a chemically removable metal such as aluminum or zinc into those surfaces and...
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4335997 |
Stress resistant hybrid radial turbine wheel
A hybrid dual property radial turbine rotor for a gas turbine engine includes an airfoil shell having a plurality of radially outwardly directed airfoils thereon joined to a continuously...
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4318672 |
Particle erosion resistant covering for fan blade leading edge
A considerable increase of the life time of metallic members, particularly the blades of fans or turbines, which are exposed to air-borne abrasive particles is obtained by providing such members...
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4314007 |
Composite shaped articles
A composite shaped article comprising at least one reinforcing core of a heat-resistant oxide-dispersion-hardened metal or alloy and a cladding of a heat-resistant metal or alloy which is...
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4299860 |
Surface hardening by particle injection into laser melted surface
A method of impregnating the surface of a metal substrate with wear resist particles to impart wear resisting characteristics to the surface. The substrate surface is subjected to a relatively...
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4292010 |
Cambered blade or vane for a gas turbine engine
A blade or vane for a gas turbine has a cambered aerofoil made up of a plurality of single crystals of an alloy. Each crystal extends longitudinally of the aerofoil and has a predetermined...
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4277222 |
Turbine engine compressor
In a turbine engine of the type having a centrifugal air compressor open at one end to a combustion chamber, the improvement which comprises coating the back face of the air compressor with a...
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4273512 |
Compressor rotor wheel and method of making same
A compressor rotor wheel construction and a method of making same is provided which includes a blade portion of heat-resistant metallic material, a rotor disk portion made of a high-strength...
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4262840 |
Rotor for high operating speeds
A high-speed rotor constructed of elemental boron and fashioned as a hollow element such as a centrifugal drum.
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4249913 |
Alumina coated silicon carbide abrasive
Disclosed is an improved abrasive material particularly useful as a dispersoid in metal matrices to provide articles of use having superior abrasive properties, especially at elevated temperatures....
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4247254 |
Turbomachinery blade with improved tip cap
A turbomachinery blade including a hollow interior is provided with an improved tip cap comprising first and second members each made of an alloy of a composition and properties different from the...
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4241110 |
Method of manufacturing rotor blade
A rotor blade is manufactured by making a soft alloy into a blade body with a curved section, joining a hard alloy to the leading edge of the blade body, coating the back side surfaces of the...
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4240495 |
Method of making cast metal turbine wheel with integral radial columnar grain blades and equiaxed grain disc
A cast metal turbine wheel is made comprising a cylindrical disc with equiaxed grains and integral blades with columnar grains oriented substantially parallel to the leading and trailing blade...
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4233342 |
Method for vapor-coating turbine buckets
Method for vacuum depositing corrosion and oxidation resistant alloy coatings on turbine buckets having leading edges and trailing edges, with simultaneous rotation of the turbine buckets about...
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4232995 |
Gas seal for turbine blade tip
An improved gas seal between a stationary member and a movable member, one of which includes an abrasive tipped projection directed toward a surface of the other, for example a turbine engine blade...
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4222794 |
Single crystal nickel superalloy
A specific composition range and process sequence are described for the production of single crystal superalloy articles which have an exceptional combination of high temperature mechanical...
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4186473 |
Turbine rotor fabrication by thermal methods
A method of fabricating a hybrid dual property wheel assembly includes the steps of preforming a bladed ring of a highly solidified alloy material including a base with a large diameter central...
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4184900 |
Control of microstructure in cast eutectic articles
This invention concerns a method for controlling the microstructure of directionally solidified eutectic articles and the article produced thereby. The method is particularly appropriate for the...
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4178667 |
Method of controlling turbomachine blade flutter
A method for controlling the first torsional node line position in a rotatable blade of a turbomachine to improve its flutter stability including the steps of forming a first monolithic blade...
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4169726 |
Casting alloy and directionally solidified article
An improved Ni-Co-Cr base casting alloy is particularly useful as a directionally solidified article in the form of a gas turbine blade tip portion to provide resistance to the combination of...
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4152816 |
Method of manufacturing a hybrid turbine rotor
A method for manufacturing a turbine rotor assembly from dissimilar materials includes the step of preforming a turbine disc of powdered metal by direct hot isostatic pressing; machining the OD of...
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4141127 |
Method of refurbishing turbine vane or blade components
A method of refurbishing vane or blade components. Used turbine vanes or blades are cleaned, annealed and in some cases slotted adjacent their ends, after which any cooling passages (in the case of...
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4137619 |
Method of fabricating composite structures for water cooled gas turbine components
A method is provided for fabricating complex composite components for water-cooled, high temperature gas turbines. Each component comprises a core, a thermally conducting layer of copper bonded to...
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4122673 |
Internal combustion engine with afterburning and catalytic reaction in a supercharger turbine casing
To remove pollutants in the exhaust gases from a liquid fuel driven engine, a turbosupercharger, including a turbine and a compressor, is combined with the engine to provide both afterburning and...
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4123595 |
Metallic coated article
A metallic article is provided with improved resistance to high temperature environmental conditions, particularly hot corrosion resistance, through the interdiffusion with the article substrate of...
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4121894 |
Refurbished turbine components, such as vanes or blades
A refurbished turbine vane or blade. Used turbine vanes and blades are cleaned, annealed and in some cases slotted adjacent their ends, after which any cooling passages are welded closed and all...
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4101712 |
Method of producing a material with locally different properties and applications of the method
A method of producing a material with locally different properties comprises filling a form with at least two different component powders such that the ratio of contents of said powders in the...
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4091146 |
Flexible, low porosity airfoil skin
A flexible, low porosity airfoil skin is described which includes multilayer flexible, annealed metallic mesh members consisting of two or three such members selected from the class consisting of...
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4090813 |
High-efficiency turbo-machine impellers
A martensitic stainless steel to be used for the impellers of turbo-blowers, compressors and the like consisting essentially, based on weight of 0.04 - 0.15% C, up to 2.0% Si, 0.2 - 2.0% Mn, 3.5 -...
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4074559 |
Forging method
A method of making a disc having integral blades wherein (1) a billet is preformed with the disc being formed close to final shape except that material needed to complete the outer portion...
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4066806 |
Diffusion coating of ferrous metals
A process is provided for the pack diffusion coating of ferrous metal articles with aluminum, wherein a small but effective amount of an energizer, aluminum chloride, is employed associated with a...
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4063939 |
Composite turbine wheel and process for making same
A process for making a composite integral turbine wheel and the like, consisting of a plurality of blade elements of an airfoil shape connected at their inner ends to the periphery of a sintered...
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4050133 |
Method of refurbishing turbine vanes and the like
A method for repairing turbine vanes and the like which have become worn or cracked after extended periods of use. The method embraces the steps of applying molten metal containing a predetermined...
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4033792 |
Composite single crystal article
This invention concerns composite articles, particularly those which contain single crystal components. A method is disclosed for joining single crystals together so that the resultant article is...
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4028787 |
Refurbished turbine vanes and method of refurbishment thereof
A refurbished turbine vane and method of producing the same. Used turbine vanes are cleaned, annealed and slotted adjacent their ends, after which the cooling passages are welded closed and all...
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3982854 |
Friction welded metallic turbomachinery blade element
A friction welded metallic article such as a fluid directing element for turbomachinery apparatus has a cast airfoil and a wrought base joined by friction welding. One such article having a hollow...
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3981616 |
Hollow composite compressor blade
A hollow composite compressor blade having two airfoil-shaped half sections formed of composite material bonded together, one or more span members of metal or composite material bonded and integral...
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3952939 |
Sheet cladding method
A method is disclosed for metallurgically bonding a protective sheet cladding to a convex-concave substrate such as an airfoil or turbine blade. According to the method of the invention, a...
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3951612 |
Erosion resistant coatings
Composite coatings are formed of a ceramic-type material such as chromium carbide over an intermediate layer of a ductile metal such as nickel on stainless steel turbine compressor blades. Such...
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3940268 |
Method for producing rotor discs
The production of rotor discs by bonding a plurality of fully dense, preformed blades to a hub of compacted alloy powder. The blades are embedded in the uncompacted powder and by the use of hot...
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3928901 |
Forming a cladding sheet to a convex/concave substrate
A sheet cladding is closely preformed to a convex-concave substrate by a method including the steps of rough forming the sheet cladding about the substrate so that the sheet cladding closely abuts...
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3928026 |
High temperature nicocraly coatings
A highly ductile coating for the nickel- and cobalt-base superalloys having long term elevated temperature oxidation-erosion and sulfidation resistance and diffusional stability consists...
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3923422 |
Taper lining for composite blade root attachment
A composite helicoptor rotor blade in which fiber tapes are utilized in laminate fashion to build up spar-type strap members which are twisted and wrapped around a vertically extending attachment...
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3918838 |
Metal reinforced plastic helical screw compressor rotor
Metal plates whose periphery is configured generally to that of a finished helical screw compressor rotor are fixedly stacked on a rotor shaft at axially spaced positions to form a metal skeleton...
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