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4644867 |
Shell case with non-compressible fragments metallurgically bonded to the casing
A shell case comprising prefabricated fragments (4), preferably of a material with high density, and a supporting material which surrounds the fragments and together with these forms a connected...
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4643648 |
Connection of a ceramic rotary component to a metallic rotary component for turbomachines, particularly gas turbine engines
The connection of a ceramic rotary component to a metallic rotary component for a turbomachine such as a gas turbine engine wherein the ceramic rotary component comprises a sintered rotor disk of...
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4640814 |
Method for producing clad tubular product
A powder-metallurgy method for producing tubular product having at least one surface and preferably an internal surface thereof clad with an alloy different from and preferably more resistant to...
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4640815 |
Method and assembly for producing extrusion-clad tubular product
A powder-metallurgy method and assembly for producing tubular product having at least one surface and preferably an interior surface thereof clad with an alloy different from and preferably more...
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4630692 |
Consolidation of a drilling element from separate metallic components
The method of forming a cutter, which includes a core and a wear resistant insert defining a body means which includes (a) applying to the body means a mixture of: (i) wear resistant metallic...
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4629515 |
Superconductive materials and process for the production thereof
A superconductive substance is produced by fabricating any one metal (17) of niobium and vanadium and an easily deformable metal (16) such as Cu into one piece and working it to produce a composite...
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4627958 |
Densification of metal powder to produce cladding of valve interiors by isodynamic compression
A valve cladding method and associated system for implementation including the steps of preforming solid insert-members (22,24) of a vitreous material (having a rheological state that varys with...
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4625400 |
Method of making a strip for an electrical contact terminal
A method of producing a strip adapted for use as an electrical contact terminal comprising the following steps. First, a strip of relatively flexible substrate material is provided. Then, a...
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4623595 |
Sliding member and process for producing the same
The present invention aims to provide a sliding member: to be operated under a high load and high sliding speed; having high impact resistance and high break-in property; to be highly resistant and...
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4616389 |
Manufacture of camshafts
A camshaft is prepared from separately formed cams and a shaft. The cams may for example be formed by sintering. The cams are provided with holes which are under-sized and are provided with...
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4614837 |
Method for placing electrically conductive paths on a substrate
A process for placing conductive paths on to the surface of a heat softenable substrate by applying a layer of metal powder to the substrate, compacting the powder in a pre-determined pattern by...
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4613369 |
Porous metal article and method of making
A method of making a porous metal article is disclosed comprising: (a) applying a stabilized suspension of a dispersed metal particulate in a fluid medium to a porous metal support; (b)...
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4606883 |
Method of manufacturing a metallic composite article
Method of manufacturing a metallic composite article, with which the surface area of a base member, which surface area consists of a metallic base material, is bonded to a plating material over the...
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4595556 |
Method for manufacturing camshaft
A composite camshaft having a plurality of ferrous fitting members, such as cam lobes and journals, firmly bonded to a steel shaft by sintering in the presence of a liquid phase. The fitting...
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4594219 |
Powder metal consolidation of multiple preforms
The method of producing a metallic, ceramic, or metal ceramic, part, employing powdered material, that includes: (a) forming two or more oversize powder material preforms respectively...
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4593776 |
Rock bits having metallurgically bonded cutter inserts
A cladding process is disclosed wherein hard carbide cutter inserts, as well as polycrystalline diamond composites, are metallurgically bonded into an exterior core of a rock bit cone or a drag bit...
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4592252 |
Rolling cutters for drill bits, and processes to produce same
A roller bit cutter comprises a tough, metallic, generally conical and fracture resistant core having a hollow interior, the core defining an axis; an annular, metallic, radial bearing layer...
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4591480 |
Method for sealing porous metals
A method for sealing porous metals, which comprises applying powder of a eutectic alloy containing an element having a good diffusibility in a porous metal or powder of a mixture of metals capable...
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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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4587700 |
Method for manufacturing a dual alloy cooled turbine wheel
A dual alloy cooled turbine is manufactured by casting a hollow cylinder of first nickel-base alloy material with high creep resistance to produce directionally oriented grain boundaries. A preform...
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4585617 |
Amorphous metal alloy compositions and synthesis of same by solid state incorporation/reduction reactions
Amorphous metal alloy compositions are synthesized by solid state incorporation/reduction reactions wherein a high-surface area support is brought in contact with a precursor metal-bearing compound...
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4584170 |
Method of making pipes by powder metallurgy and pipe blanks (semi-finished products) made in accordance therewith
A method of making pipes by powder metallurgy, in which powder of metal and/or metal alloys (17) is filled into a thin-walled casing consisting of inner pipe wall (12), outer pipe wall (11) and a...
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4584169 |
Process, apparatus and installation for the continuous production of a filler wire
In the installation, a strip is shaped from a split tube which is welded or seamed to give a closed tube in a welding or seaming station. Associated with the welding or seaming station is a suction...
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4584171 |
Method of producing rocket combustors
A method of producing rocket combustors wherein in forming an outer cylin by a powder metallurgical method on the outer side of a cylinder provided on its outer periphery with a cooling wall of...
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4582680 |
Multiphase backing materials for piezoelectric broadband transducers
An acoustical transducer is provided with an acoustically absorbant backing material having an acoustical impedance precisely matching the impedance of the piezoelectric element in the transducer....
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4578317 |
Journal
A journal assembled to a rotary shaft has its outer portion made of solid phase sintered alloy having 10% to 30% by volume of sintering pores inpregnated with lubricating oil and its inner portion...
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4576872 |
Friction element and method of manufacture thereof
To produce a sintered metal type brake friction element which beds-in quickly and which has a "feel" similar to a resin-based element, powdered metallic friction material is subjected to a...
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4575429 |
Composite self lubricating bearings
Improved composite bearings are provided employing cold forming and sintering techniques. Improvements in compositions for impregnating porous layers of composite bearings are provided comprising...
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4574014 |
Process for manufacturing a formed contact part
In the manufacture of a formed contact part of a metal alloy, wherein the formed part is shaped in one or more manufacturing operations without the removal of metal to produce a contact element,...
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4554130 |
Consolidation of a part from separate metallic components
A method of consolidating metallic body means comprises (a) applying to the body means a mixture of: (i) metallic powder (ii) fugitive organic binder (iii) volatile solvent (b)...
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4544523 |
Cladding method for producing a lined alloy article
A method for producing an alloy article, such as a valve or valve component, and an assembly for use therewith. The article is produced by hot isostatic compacting wherein a lining of prealloyed...
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4537097 |
Method and apparatus for manufacturing cutting elements particularly for deep drilling
A base powder mixture consisting of diamond material and solid support is inserted into the recess of a mold block for the manufacture of cutting elements for, in particular, deep drill bits, the...
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4537742 |
Method for controlling dimensions of RSPD articles
A method is provided for forming articles from difficult to fabricate materials with precise internal dimensions. The article is first formed to approximate dimensions as a body using the material...
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4530815 |
Method of producing a contact device for a switch
A novel method of producing a contact device for a switch is disclosed. According to the present invention, a powdered contact alloy material is pressed with a substrate on which is placed the...
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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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4526748 |
Hot consolidation of powder metal-floating shaping inserts
An assembly and method for hot consolidating powder metal by heat and pressure in a container. The container is a mass of material substantially fully dense and incompressible with at least a...
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4524046 |
Method for manufacturing a cam-cam shaft assembly
A method for manufacturing a firm and rigid cam-cam shaft assembly, which comprises the steps: (a) molding a component having through-hole therein from a material of an alloy to be sintered, said...
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4521496 |
Stress relieved metal/ceramic abradable seals
Metal/ceramic abradable seals of the type used in jet aircraft are improved by using a substrate which is able to deform during cooling from the brazing temperature and then rendering the substrate...
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4511612 |
Multiple-layer wall for a hollow body and method for manufacturing same
A multiple-layer wall is provided for a hollow body to sustain high thermal and mechanical loads and to afford adequate thermal insulation. The wall has, on the inside, a heat and/or wear resistant...
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4508680 |
Method of manufacturing a rocket combustion chamber
The present invention is directed particularly to an improved method using owder metallurgy for the manufacture of the grooved cooling wall of a liquid-propellant rocket combustion chamber. The...
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4495252 |
Wear-resistant metallic article
A wear-resistant metallic article is provided which comprises a metallic substrate, a barrier layer of a metal selected from the group consisting of nickel, alloys of nickel, copper and alloys of...
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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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4478787 |
Method of making dispersion strengthened metal bodies and product
A process and a product produced thereby, for forming rod or bar or tube stock or strip, comprising a sheath and a densified dispersion strengthened metal core. Powdered dispersion strengthened...
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4477401 |
Method of manufacturing a dielectric
A method of manufacturing a dielectric from ferroelectric ceramic material having a perovskite structure with the basic formula ABO 3 . In the method, the dielectric is sintered in a reducing...
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4466165 |
Method of forming a bearing
A method of forming a bearing having a body of sintered powder metal. The bearing body includes a plurality of surfaces with interstices in the sintered powder metal defining a plurality of...
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4456578 |
Method and apparatus for producing a friction element for a disc brake
A friction element for a motor car or motor cycle disc brake is produced by pressing a powdered friction material in a die cavity using first and second resistance heating electrodes. The friction...
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4455278 |
Method for producing an object on which an exterior layer is applied by thermal spraying and object, in particular a drill bit, obtained pursuant to this method
A method is described for producing articles having a metal core, an intermediate powder metallurgy layer, and an exterior wear- and chip-resistant layer on the portions thereof requiring the same,...
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4455353 |
Method of producing an article and article produced in a mould which defines the contour of the article
Article produced in a mould for a plastics moulding tool having a mould surface defining the contours of the article, with the article comprising a body formed from a composition comprising a...
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4447302 |
Highly porous electrodes hot pressed from nickel powder for alkaline water electrolyzers
The invention concerns a highly porous electrode of special construction and hot-pressed or sintered from nickel powder with the addition of a catalyst and a method for its manufacture. The...
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