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4817858 |
Method of manufacturing a workpiece of any given cross-sectional dimensions from an oxide-dispersion-hardened nickel-based superalloy with directional coarse columnar crystals
Method of manufacturing a workpiece of any given cross-sectional dimensions from an oxide-dispersion-hardened nickel-based superalloy available in the form of coarse-grained longitudinally directed...
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4808055 |
Turbine blade with restored tip
The worn tip of a turbine blade is restored by applying a metallurgically bonded wear resistant surface at the tip. The wear resistant surface is applied using a transferred plasma arc and powdered...
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4804311 |
Transverse directional solidification of metal single crystal articles
During conventional directional solidification of a single crystal article having a large overhanging flange lying along its length, crystal nucleation defects and shrinkage occur in the flange. To...
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4795313 |
Protective tip for a titanium blade and a method of brazing such a tip
A protective tip (5) for a titanium steam-turbine blade (1), comprises 28% to 40% TiC, 12% to 26% Cr+Co, 1% to 6% Mo, 3% to 8% Ni 0.3% to 1.5% Cu and a balance of Fe. The tip (5) is brazed to the...
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4789410 |
Method for heat treating and quenching complex metal components using salt baths
Salt bath techniques are used to heat treat and quench a metal component. The component is first heated to the required heat treatment temperature while disposed within a sealed, first salt bath....
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4787821 |
Dual alloy rotor
A rotor member for a turbomachine includes a first portion formed of comparatively higher creep rupture strength material, and a second portion integrally joined to the first portion and formed of...
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4776765 |
Means and method for reducing solid particle erosion in turbines
Applicants have identified and unexpected mechanism which contributes to solid particle erosion of the trailing edge of spaced apart aerodynamically shaped nozzle partitions in an axial fluid flow...
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4772450 |
Methods of forming powdered metal articles
In forming an article, such as a turbine blade, of metal powder, a container is first formed by electroplating a thin layer of metal over a pattern having a configuration which corresponds to the...
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4761117 |
Turbine rotor and a method of producing the same
A turbine rotor including a turbine vane wheel made of ceramics, a ceramic shaft formed integrally with the turbine wheel, and a metallic shaft bonded to the ceramic shaft. The hardness of a part...
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4745033 |
Oxidation resistant coatings for molybdenum
A molybdenum article is disclosed in which the substrate thereof has adherently bonded thereto a thermally self-healing plasma-sprayed coating consisting essentially of a composite of molybdenum...
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4741973 |
Silicon carbide abrasive particles having multilayered coating
Ceramic particles useful as abrasives in a metal matrix layer are described. The particles are coated with an oxide monolayer and a metal duplex layer. Preferably, the particles are silicon...
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4728262 |
Erosion resistant propellers
An improved propeller blade for use in an environment subjecting the blade to particulate impacts tending to erode the dynamic profile of the blade, and which is carried by a rotatable hub and...
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4726101 |
Turbine vane nozzle reclassification
A gas turbine vane (1) is subject to distortion and wear during operation or repair which results in an increase in the spacing between successive vanes (6 and 7) which define nozzle gas flow areas...
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4721540 |
Low density single crystal super alloy
A single crystal nickel alloy is provided having many of the foundry and performance characteristics of the higher density, single crystal, nickel base super alloys from which the vanes and blades...
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4711665 |
Oxidation resistant alloy
An oxidation resistant alloy comprising about 3 to 14 percent Cr by weight, about 3 to 50 percent by volume Si 3 N 4 , and the balance selected from the group consisting of Fe, Ni, Co and alloys...
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4710103 |
Method for fastening blades on the periphery of the rotor body of a steam turbine and the turbo-machine produced by the method
Steam turbine blades are fastened in an outer layer of weld material applied by deposit welding to the outer surface of the rotor body, the composition of the weld material being optimally matched...
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4705463 |
Compressor wheel assembly for turbochargers
A compressor wheel assembly for turbochargers and the like comprises a compressor wheel including a boreless hub formed integrally as by casting with a circumferential array of aerodynamically...
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4704066 |
Turbine or compressor guide blade and method of manufacturing same
A method for the manufacture of a guide blade for a turbine or compressor guide wheel, uses a profiled bar of heat and corrosion resistant metal that is cut to oversize length. This is in...
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4680160 |
Method of forming a rotor
An improved method of forming a rotor includes the steps of hot isostatically pressing powdered metal to form disc-shaped hub sections. Each of the hub sections has a rim portion with a relatively...
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4676843 |
Process for joining component workpieces made of a superalloy employing the diffusion bonding process
Two component workpieces (1, 3) consisting of different superalloys or of the same superalloy are bonded together to form a monolithic whole, with the insertion of a layer 1-2 mm thick consisting...
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4676721 |
Room air cleaner
A method and device for reducing the pollution of the air in a room equipped with a ceiling fan having one or more rotating blades comprising covering at least one blade of the fan with porous...
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4677035 |
High strength nickel base single crystal alloys
Disclosed are novel nickel-base single crystal alloy compositions consisting essentially of, by weight, about 8.0-14.0% chromium, 1.5-6.0% cobalt, 0.5-2.0% molybdenum, 3.0-10.0% tungsten, 2.5-7.0%...
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4659288 |
Dual alloy radial turbine rotor with hub material exposed in saddle regions of blade ring
A dual alloy radial turbine rotor with high tensile strength hub material exposed in the saddle regions between the blades to prevent fatigue that causes cracks in the saddle regions is...
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4623087 |
Application of coatings to articles
It is known to apply coatings which have desired characteristics, e.g., wear resistance, thermal barrier capabilities anti-oxidation, to articles the material of which does not have the desired...
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4613388 |
Superplastic alloys formed by electrodeposition
There are provided superplastic alloys formed by electrodeposition of the alloy onto a cathode from an electrolyte containing a first metal ion, which is iron, nickel or cobalt, and a second...
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4601583 |
Multi-hubbed separable blade agitators
What is disclosed is a multi-hubbed, separable blade agitator assembly wherein the exterior surfaces of the hubs of each agitator blade as well as the exterior surface of the drive shaft are coated...
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4589176 |
Fiber-composite turbine blade and method for its construction
The present invention provides a method for constructing from fiber-composite material complex structures having two or more transversely disposed members. By way of example, a composite turbine...
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4581300 |
Dual alloy turbine wheels
A dual alloy turbine wheel manufacture of a cast integral blade ring pressure-sealed to a wrought alloy hub and thereafter bonded thereto by hot isostatic pressing.
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4574451 |
Method for producing an article with a fluid passage
A fluid-cooled article, such as a turbomachinery blading member, is provided with a fluid passage by a method of depositing a first material on a work surface of a mandrel by low pressure plasma...
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4573872 |
High temperature heat resistant structure
A heat resistance structure adapted to be used in a passage of a high temperature fluid, comprises a heat resistant metal plate having a smooth outer surface, a layer of a substance having a high...
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4563801 |
Method of reinforcing the edges of impeller vanes or the like
The inlet and/or outlet edge of a blank which is to be converted into the vane of an impeller for use in a centrifugal pump is reinforced by providing an exposed surface of the blank with a pair of...
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4549949 |
Marine propulsion device including cathodic protection
The marine propulsion device lower unit includes a housing having a lower portion submerged in water and defining an internal passage communicating with the water. Corrosion protection for both...
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4536932 |
Method for eliminating low cycle fatigue cracking in integrally bladed disks
Stress relief for the rim of an integrally bladed rotor made from a forging preform is provided by forming a plurality of radially extending circumferentially spaced-apart slots around the...
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4528048 |
Mechanically worked single crystal article
A single crystal nickel base superalloy component, such as a gas turbine blade (20, 28) is mechanically deformed at elevated temperature to improve the yield strength of a portion which is used at...
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4526747 |
Process for fabricating parts such as gas turbine compressors
The disclosure relates to a method of manufacturing a turbine wheel using an elastomeric mold for the acceptance of powdered metal. The powdered metal is cold isostatically pressed and thereafter...
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4504191 |
Heated ceiling fan
A heated ceiling fan comprising a plurality of blades with heating means in each of the blades.
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4501053 |
Method of making rotor blade for a rotary machine
A coolable rotor blade 14 for an axial flow rotary machine and a method for making the rotor blade are disclosed. The rotor blade includes a spar 38 and a shell 34 for defining the airfoil surface...
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4499158 |
Welded structural member having high erosion resistance
A welded structural member adapted to be subjected to a flowing fluid and comprising a base member consisting mainly of iron and a coating layer formed by a build-up welding on the surface of the...
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4492522 |
Blade for a fluid flow engine and method for manufacturing the blade
A blade for a fluid flow engine, especially a gas turbine, has a protective coating against injurious attack by the propellant or working medium. A metal blade having a diffusion layer or a sprayed...
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4492737 |
Composite metallic and non-metallic articles
The invention is concerned with the problem of joining ceramic components to metal components. A composite ceramic-metal component is proposed, e.g. a rotor disc for a gas turbine engine (see FIG....
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4479293 |
Process for fabricating integrally bladed bimetallic rotors
An integrally bladed bimetallic rotor for high temperature operation having airfoils with good stress rupture and creep strength and a hub with high tensile strength and good low cycle fatigue...
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4473336 |
Turbine blades
The present invention relates to turbine blades and in particular to turbine blades for use in gas turbine engines. Tensile stresses are introduced into turbine blades when they rotate at high...
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4447466 |
Process for making plasma spray-cast components using segmented mandrels
Gas turbine engine superalloy airfoils and other components having unique microstructures and novel combinations of physical properties are produced rapidly and economically by the method of the...
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4446199 |
Overlay metallic-cermet alloy coating systems
A substrate, such as a turbine blade, vane, or the like, which is subjected to high temperature use is coated with a base coating of an oxide dispersed, metallic alloy (cermet). A top coating of an...
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4436485 |
Turbine wheel with integral DS blades and equiaxed hub
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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4433005 |
Fatigue resistant tatanium alloy articles
Titanium and titanium alloy particles are provided with improved mechanical properties through the use of ion implantation. Ions of elements selected from the noble metals and titanium are...
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4429019 |
Heat-resistant machine component
A heat resistant machine component, e.g. a gas turbine blade, a vane or the like, for use in a hot-gas atmosphere, especially under dynamic mechanical strain. The engine component comprises a core...
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4426867 |
Method of peening airfoils and thin edged workpieces
Shot peening of thin edges of workpieces which are subject to deformation damage by direct impacts is accomplished by rotating the workpiece edge near centerline through a particular angle measured...
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4418124 |
Plasma spray-cast components
Gas turbine engine superalloy airfoils and other components made by low pressure/high velocity plasma spray-casting have unique microstructures and, consequently, novel combinations of physical...
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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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