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3860420 |
METHOD OF MAKING WELDING RODS BY SINTERING IN THE PRESENCE OF A LIQUID PHASE
A method of producing a welding rod using power metallurgy wherein cast iron particles are formed into a suitable shape within a mold cavity, without compaction, and heated in a protective...
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3859057 |
HARDFACING MATERIAL AND DEPOSITS CONTAINING TUNGSTEN TITANIUM CARBIDE SOLID SOLUTION
The specification discloses a hardfacing material having as the principal hard ingredient solid solution tungsten titanium carbide.
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3859087 |
MANUFACTURE OF ELECTRICAL CONTACT MATERIALS
An electrical contact having high electrical conductivity, high hardness and strength capable of providing excellent arc erosion and low heat rise capability is obtained by blending a refractory...
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3856478 |
Fe-Mo-C-[Cr] SINTERED ALLOYS FOR VALVE SEATS
Ferrous sintered alloys adapted for use as valve seats in internal combustion engines resistive to wear and intermetallic impact wear from the heated valve associated therewith, the alloys composed...
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3853493 |
HIGH-FRICTION CERMET MATERIAL
A high-friction material characterized in that it incorporates boron nitride taken in an amount between 2 and 10 percent of the total weight, the rest of the ingredients being used in the following...
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3853551 |
METHOD OF SINTERING IRON, COPPER TIN ALLOYS FOLLOWED BY SLOW COOLING
A sintered shaped body comprises 0.5 to 3% tin, 2 to 14% copper, balance iron, the ratio of tin to copper being between 1:2 and 1:9. The bodies are made by sintering an alloy as indicated at a...
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3838981 |
WEAR-RESISTANT POWER METALLURGY NICKEL-BASE ALLOY
A wear- and abrasion-resistant article of sintered metal powder consists of chromium from about 23 percent to about 29 percent, tungsten from about 8 percent to about 15 percent, cobalt from about...
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3838982 |
IMPERVIOUS SINTERED IRON-COPPER METAL OBJECT
A metallic object formed of metal particles compressed together to form a rigid object. Each of the metal particles is coated with a metal having a melting temperature lower than that of the metal...
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3837848 |
METHOD OF MAKING TOOLS BY IMPREGNATING A STEEL SKELETON WITH A CARBIDE, NITRIDE OR OXIDE PRECURSOR
Method of making tools by compressing, e.g., steel particles into a porous skeleton, having high temperature strength and being penetrated by a continuous network of pores of total volume below 50...
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3837068 |
METHOD OF MAKING A COMPOSITE HIGH-STRENGTH SLEEVE
A composite high-strength machine element such as a sleeve (FIG. 6) consists of a heavy load bearing or working portion composed of sintered powdered high-performance alloy and a supporting portion...
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3812565 |
SINTERED FE--CR--C--[MO--V--Ni] ALLOYS IMPREGNATED WITH Pb OR Rb-BASE ALLOYS
A lead-filled sintered ferrous alloy containing carbon and chrome and preferably also molybdenum and vanadium is prepared in a powder metallurgy method and impregnated in its voids with lead. The...
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3807986 |
COMBINATION IRON AND IRON OXIDE BRIQUETTE AND METHOD OF USING
Briquettes, or uniformly sized pieces, formulated according to planned chemical and physical consistencies, introduced by gravity through the slag layer onto, or into, the molten metal bath of an...
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3804599 |
SINTERED Ag-GRAPHITE-Ni METAL CERAMIC MATERIAL FOR MAKING ELECTRIC CONTACTS AND METHOD OF PRODUCING SAME
A metal ceramic material for electrical contacts comprises 5-30 percent of silver, 0.5-50 percent of graphite, nickel -- the balance. A method of producing this material consists in that a mixture...
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3802852 |
SINTERED ALLOYS HAVING WEAR RESISTANCE AT HIGH TEMPERATURE COMPRISING A SINTERED FE-MO-C ALLOY SKELETON INFILTRATED WITH CU OR PB BASE ALLOYS OR SB
The present invention relates to sintered alloys having wear resistance at high temperature, particularly suitable for fabricating valve seats of internal combustion engines. The pores of iron-base...
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3802849 |
METHOD FOR MAKING A SINTERED BODY HAVING INTEGRAL PORTIONS OF DIFFERENT DENSITY
A method for forming a sintered body having integral porous, low density and non-porous, high density portions, comprising the steps of sintering and compacting a powder of a material selected from...
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3779717 |
NICKEL-TANTALUM ADDITION AGENT FOR INCORPORATING TANTALUM IN MOLTEN NICKEL SYSTEMS
A physical admixture of nickel powder and scrap tantalum powder is made to dissolve in molten nickel as rapidly as a conventional true master alloy of comparable proportions of these metals in pure...
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3778257 |
LIGHT-DUTY ELECTRICAL CONTACTS OF SILVER AND RUTHENIUM OXIDE
A light-duty electrical contact material which consists of a mixture of silver and ruthenium oxide, the ruthenium oxide contact being in the range 0.1 to 13.0 atomic per cent. For reasons of...
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3775101 |
METHOD OF FORMING ARTICLES OF MANUFACTURE FROM SUPERALLOY POWDERS
A highly alloyed superalloy material is obtained using prealloyed powders. The material is easily shaped at high temperatures when it becomes superplastic because of its particular microstructure.
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3773474 |
MULTI-PHASE STRIP FROM PARTICLE AND POWDER MIXTURES
An article or strip formed by compacting coarse metal particles or a mixture of coarse metal particles and a fine powder. The invention is particularly directed to the formation of multi-phase...
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3770391 |
LANTHANUM CONTAINING POWDERS FOR MAKING OXIDATION RESISTANT METALLICS, METHOD OF MAKING SAME, AND METALLIC PRODUCTS
A powder blend suitable for compaction and metallurgical bonding which contains at least 10 percent chromium and preferably at least 15 percent chromium, more than 30 percent and preferably more...
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3770332 |
COMPOSITE HEAVY-DUTY BUSHING AND METHOD OF MAKING THE SAME
A composite heavy-duty bushing, such as a bearing bushing or bearing race (FIG. 4) consists of a high load-bearing or working portion consisting of a sleeve composed of sintered powdered...
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3751271 |
SINTERED FILTER HAVING STRAIGHT HOLES THERETHROUGH
A sintered metal, or ceramic filter having parallel, straight holes of uniform diameter and with smooth inner surfaces passing therethrough is formed by sintering a green compact about a large...
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3745296 |
COPPER TOOL MATERIAL FOR ELECTRICAL DISCHARGE MACHINING
A new electrode material for electrical discharge machining consisting essentially of copper containing a critical oxygen content is disclosed. The novel electrode shows an increase in wear...
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3725142 |
ATOMIZED STEEL POWDER HAVING IMPROVED HARDENABILITY
Atomized steel powder having improved hardenability by the addition of boron. The powder is produced by atomizing a molten stream of steel containing 0.06 to 0.12 percent carbon and 0.005 to 0.100...
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3717445 |
ELECTRODE HOLDER FOR ELECTRIC ARC FURNACE AND MAKE THE SAME
An electrode holder having a powder metallurgical liner suitable for an application of an electric arc furnace using a high electric power as well as an ultra high electric power. The liner is...
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3715791 |
NICKEL-ALUMINUM COMPOSITE MATERIAL
A nickel-aluminum composite metallic material produced from nickel and aluminum powders characterized by high strength throughout a wide range of temperatures and having excellent resistance to...
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3708283 |
PROCESS FOR PREPARING CEMENTED FERROCHROME
There is described a cemented ferrochrome material including from 15 to 99 percent of ferrochrome and from 1 to 85 percent of a metallic binder. The material is made by mixing or milling together...
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3706550 |
METHOD FOR PRODUCING A METAL DIE OR MOLD
A method for producing a metal die or mold including the steps of placing a layer of sintering powder, such as iron, copper, tungsten carbide or titanium carbide, in a frame or box, placing in...
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3698055 |
HEAT RESISTANT ALLOYS OF IRON, COBALT AND/OR NICKEL AND ARTICLES THEREOF
Alloys of iron, cobalt and/or nickel containing from 0.5 to 4.0% carbon and from 5 to 60% tungsten, molybdenum or mixtures thereof characterized by the absence of "reactive" elements such as Cr, V,...
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3656917 |
STEEL ALLOY TUBES
Low carbon steel alloy tubes of high tensile strength. The steel alloy contains less than 0.23% carbon, less than 0.5% silicon, from 1.00 to 1.50% manganese, less than 0.040% phosphorus, less than...
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3653982 |
TEMPER RESISTANT CHROMIUM-CONTAINING TITANIUM CARBIDE TOOL STEEL
A heat treatable, temper resistant, chromium-containing, carbidic tool steel having a total carbon content of at least about 6 percent by weight is provided comprising about 25 to 75 percent by...
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3650729 |
INTERNALLY NITRIDED STEEL POWDER AND METHOD OF MAKING
The application describes a steel powder containing as a dispersoid therein particles of metal nitride having a free energy of formation of greater than about -21,000 cal./mole, said nitride...
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3649257 |
FULLY DENSE CONSOLIDATED-POWDER SUPERALLOYS
Superalloys formed of consolidated powder, which are fully dense and have a composition by weight consisting essentially of about 0.01 to 0.5 percent carbon, about 5 to 30 percent cobalt, about 6...
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3639179 |
METHOD OF MAKING LARGE GRAIN-SIZED SUPERALLOYS
A process for making nickel-base superalloys possessing superior high-temperature properties which employs powder metallurgical techniques and includes the steps of densifying the powdered alloy...
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3622234 |
HOT CORROSION RESISTANT SUPERALLOYS
Under certain circumstances of service, nickel-rich and cobalt-rich superalloys are subject to "hot-corrosion" attack. This occurs, for example, when bodies formed from these alloys are operated at...
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3620690 |
SINTERED AUSTENITIC-FERRITIC CHROMIUM-NICKEL STEEL ALLOY
Powdered austenitic chromium-nickel stainless steel is blended with a powdered metal ferrite stabilizer, such as molybdenum, and the resulting blend is sintered to produce a new steel, namely, an...
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3615381 |
PROCESS FOR PRODUCING DISPERSION-HARDENED SUPERALLOYS BY INTERNAL OXIDATION
Iron-, nickel-, and cobalt-base alloys containing chromium in an amount sufficient to provide excellent scaling resistance to high temperature are made pervious to controlled quantities of oxygen...
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3585342 |
EDM ELECTRODE
Electrodes for EDM (electric discharge machining) of improved wear performance are provided by consolidated bodies of, by volume, 50 to 90 percent of graphite with the remainder consisting...
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3555265 |
FINE PARTICLE MAGNETIC MATERIAL
Fine particle magnetic material prepared by electrodeposition of iron or iron-cobalt alloys into a mercury cathode is coated with a protective coating of antimony and then placed in a lead matrix...
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3548135 |
CONTACTS FOR VACUUM INTERRUPTERS
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3540922 |
PROCESS OF FORMING NONPOROUS FERROUS METAL BRIQUETTES AND RESULTING PRODUCT
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3533781 |
PROCESS FOR PRODUCING DISPERSION HARDENED NICKEL
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3525607 |
ALLOY SYSTEMS AND PROCESS FOR THE MANUFACTURE THEREOF
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3524744 |
NICKEL BASE ALLOYS AND PROCESS FOR THEIR MANUFACTURE
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3503814 |
PYROTECHNIC COMPOSITION CONTAINING NICKEL AND ALUMINUM
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3502464 |
NICKEL BASE ALLOYS AND PROCESS FOR THE MANUFACTURE THEREOF
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3501277 |
DUCTILE COBALT STRIP
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3498763 |
WORKABLE DUPLEX STRUCTURED RUTHENIUM ALLOYS
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3497347 |
PHOSPHORUS CONTAINING IRON POWDER
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3495957 |
LEAD-IMPREGNATED,IRON-BASE,SINTEREDALLOY MATERIALS FOR CURRENT-COLLECTING SLIDER SHOES
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