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7341689 |
Pre-alloyed iron based powder
The invention concerns a new pre alloyed steel powder comprising in addition to iron and inevitable impurities, by wt %, 1.3-1.7% by weight of Cr, 0.15-0.3% by weight of Mo, 0.09-0.3% by weight of...
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7182279 |
Atomizer for atomizing molten metal
An atomizer includes a T-shaped chamber with tapered insides and an outlet which is in communication with the chamber. A first path is located in a center area in the chamber so as to introduce...
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6838021 |
Irregular shaped copper particles and methods of use
The present invention provides water atomized copper powder comprising substantially irregular shaped copper particles having at least a median D 50 particle size of from about 10 μm to about 50...
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6746509 |
Process for producing zinc or zinc alloy powder for battery
A process of producing a zinc or zinc alloy powder ( 4 ) for batteries which comprises dropping molten zinc or a molten zinc alloy to form a molten metal droplets stream ( 1 ) and striking an...
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6293987 |
Polymer quenched prealloyed metal powder
A powder metallurgical process of preparing a sheet from a powder having an intermetallic alloy composition such as an iron, nickel or titanium aluminide. The sheet can be manufactured into...
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6254661 |
Method and apparatus for production of metal powder by atomizing
An atomizing method for producing metal powder, including splitting molten metal in the vicinity of an exit of a nozzle by introducing the molten metal into a center of the nozzle, wherein gas is...
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6059853 |
Production of powder
A method of producing coated powder material is provided. In the method, molten metal or metal alloy is caused to fall in a stream (3) and is then atomized into a spray. A liquid or solid material...
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5928405 |
Method of making metallic powders by aerosol thermolysis
An economical process and associated hardware for commercial manufacture of controllable submicrometer size metallic powders for electronic and other applications. The method is based on the...
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5756162 |
Method for manufacturing sendust core powder
A method for manufacturing a powder for sendust core is disclosed which is used in power supplies, converters and invertors, and in which the sendust powder is manufactured by applying the...
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5656061 |
Methods of close-coupled atomization of metals utilizing non-axisymmetric fluid flow
Close-coupled atomization methods employing non-axisymmetric fluid flow geometries have demonstrated superior efficiency in the production of fine superalloy powder, such as, for example, nickel...
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5482532 |
Method of and apparatus for producing metal powder
The invention provides a method of producing metal powders which is less likely permit variations in cooling rate, ensures rapid solidification at a great cooling rate and readily gives fine...
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5352267 |
Method of producing metal powder
A cooling liquid is injected into and supplied to a cooling tubular body along its inner periphery to form a cooling liquid layer flowing down the inner peripheral surface of the body while...
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5320509 |
Molten metal-atomizing apparatus
There is disclosed a molten metal-atomizing apparatus which prevents the formation of a blocking in an ultra-high pressure atomizing of molten metal, and can produce finer metal powder. A vertical...
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5266099 |
Method for producing closed cell spherical porosity in spray formed metals
Metal and metal alloy preforms having closed cell, spherical porosity are spray formed at high deposition rates by introducing blowing agents into the thixotropic semisolid deposition layer, within...
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5190701 |
Method and equipment for microatomizing liquids, preferably melts
Method and apparatus for atomizing a liquid to form a fine powder. The method includes the steps of mixing the liquid with a first fluid medium jet and projecting this first fluid medium jet into a...
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4897111 |
Method for the manufacture of powders from molten materials
For a process for the manufacture of powders from molten materials by atomizing the melt to particles by means of fluid media and cooling the particles as they fall, a melting chamber (3) is...
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4722826 |
Production of water atomized powder metallurgy products
A method for utilizing a powder metallurgy ("P/M") slurry by employing water atomized metallic powders and subsequently reducing the oxide levels therein to acceptable levels. The slurry comprises...
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4664855 |
Method for producing amalgamable alloy
A process for manufacturing an atomized amalgamable alloy having mold adaptation characteristics superior to other atomized alloys and comparable or better than those for ad-mixed type alloys...
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4647305 |
Process for manufacturing amorphous alloy powders
A process for manufacturing amorphous alloy powders is provided, wherein, a high-speed fluid jet is blown against a flowing melt of an alloy which can be formed into amorphous powders, thereby...
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4624409 |
Apparatus for finely dividing molten metal
A method and an apparatus for finely dividing a molten metal by atomization is provided herein. This apparatus includes a nozzle for feeding a molten metal and an annular atomizing nozzle to force...
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4564387 |
Wet zinc dust atomization and distribution
A method for producing and distributing wet zinc dust to a zinc sulfate purification system or other zinc plant operation is disclosed. The method comprises atomizing molten zinc with high pressure...
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4559187 |
Production of particulate or powdered metals and alloys
A free flowing stream of molten metal is motioned to encounter a higher diameter and faster moving free flowing stream of a cooling liquid, such encounter resulting in the splitting of the molten...
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4548642 |
Process for preparing zinc powder for alkaline batteries (V)
A zinc powder having a low gas evolution in an alkaline electrolyte for use in an alkaline battery are obtained by alloying the zinc with at least one metal selected from the group consisting of...
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4479823 |
Process for the production of silver-tin master alloys for dental amalgams
A silver-tin-copper master alloy powder useful as a dental filling when amalgamated with mercury and having improved properties for that utility can be obtained by the steps of: (a) pulverizing...
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4437883 |
Process for producing metal powder
Metal powder having low oxygen and carbon contents and suitable for powder metallurgy may be obtained by using, as an atomizing medium, a special composition containing an alcohol having 1-4 carbon...
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4437891 |
Oil-atomized low-alloy steel powder
An oil-atomized low-alloy steel powder having improved compressibility, compactibility and hardenability is disclosed. The steel powder has the chemical composition: C: no greater than 0.02%, Mn:...
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4402885 |
Process for producing atomized powdered metal or alloy
A process for producing atomized, powdered metal or alloy is disclosed. Streams of molten metal or alloy are forced through orifices whose openings are so small that the surface tension of the...
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4401609 |
Metal atomization
An increase in fine particle metal production is realized when the descending molten metal stream is caused to impinge upon one of two descending fluid streams at a locus offset from the locus of...
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4385929 |
Method and apparatus for production of metal powder
A metal powder of improved quality is obtained by causing molten metal held in a vessel to flow out in a smooth stream through an outlet formed at the bottom of the vessel, throwing the jet of an...
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4350529 |
Corrosion-resistant powder-metallurgy stainless steel powders and compacts therefrom
A process is disclosed for improving the corrosion resistance of stainless steel powders produced by atomization in an oxidizing atmosphere whereby silicon present in the powder tends to form...
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4331478 |
Corrosion-resistant stainless steel powder and compacts made therefrom
The corrosion resistance of atomized tin-and-carbon containing stainless steel powders and compacts thereof is enhanced by incorporating a modifier metal into the melt prior to atomization....
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4287068 |
Powdered metal filter composition and processes for producing the same
A powdered metal filter composition and processes for producing the same by water atomization in which the composition exhibits an apparent density, compressibility and particle shape as a function...
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4274864 |
Making iron powder
Iron powder of high compressibility and low bulk density is made by atomizing a stream of molten steel by means of a conical jet of water at a rate in excess of 10 cubic meters water per metric ton...
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4272463 |
Process for producing metal powder
The invention is directed to a process for producing metal powder through atomizing in which a molten metal stream is subjected to the influence of a plurality but correlated sets of atomization...
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4253874 |
Alloys steel powders
A finely divided annealed steel powder consisting by weight of up to 1.5% carbon, 1.0 to 2.0% chromium, less than 0.05% silicon, less than 0.1% manganese and either one or a combination of two or...
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4240824 |
Process of making nickel or cobalt powder with precipitates
A boron-containing nickel or cobalt spray-and-fuse self-fluxing alloy powder contains hard precipitates of chromium boride and, optionally, chromium carbide which are internally precipitated from a...
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4224260 |
Production of metal powder
The invention concerns making metal powder by atomizing and quenching a stream of molten metal. According to the invention an anti-foaming agent is included in the atomizing and/or the quenching...
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4212736 |
Production of metal powder
In the manufacture of metal powder by the water atomization of liquid metal, a batch of powder and water together constituting a slurry is pumped into a settling tank having a separate receptacle...
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4194900 |
Hard alloyed powder and method of making the same
There is provided a hard alloyed powder comprising: B--from 3 to 20% by weight, Al--less than 3% by weight, Si--less than 5% by weight, O--less than 2.5% by weight, at least one...
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4192673 |
Method of manufacturing granulated ferronickel
A method of manufacturing granulated ferronickel by deoxidizing fused ferronickel containing no less than 0.1%, preferably 0.2 to 3.0%, of carbon with addition of a deoxidizing agent such as Al,...
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4170466 |
Water atomized copper alloys
A water atomization process for producing fine metal particles includes the improvement step of alloying a minor amount of silicon with copper and a metal selected from manganese, chromium, and...
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4124377 |
Method and apparatus for producing atomized metal powder
A method and apparatus for producing metal powder in which a reducing liquid is introduced into the bottom of a substantially closed granulation chamber, and a reducing gaseous atmosphere is...
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4124379 |
Recovery of silver from cuprous chloride solutions by amalgamation
A process for recovering silver from chloride solutions comprising contacting the solution with amalgams of various metals from Groups 2b, 4a, 5a, or 8b of the periodic table or copper to replace...
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4121927 |
Method of producing high carbon hard alloys
A method for forming high carbon hard alloys using powdered metal techniques wherein the carbon content of the atomized powdered metal particles is minimized and the carbon content to achieve the...
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4084964 |
High HfC-containing alloys
A new class of cobalt-based alloys and the like containing hafnium carbide (HfC) of particle size finer than about 3 microns and containing HfC in the range 2 to 15% by volume. The class has good...
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4050960 |
Method for decreasing the amount of carbon and nitrogen contained in the ferrochrome alloy
A low-carbon ferrochrome alloy containing a decreased amount of nitrogen can be made by this method. This method is conducted in a hydrogen stream and does not necessitate use of vacuum technique....
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4023985 |
Steel abrasives and method for producing same
Disclosed is a method of producing a versatile as-cast steel shot having a substantially fully martensitic structure and corresponding full hardness which permits eliminating intermediate steps of...
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4000014 |
Process for producing ductile superconductive alloys
A process for incorporating a superconductive compound or compounds by fusion in a base metal having good electrical and heat conductive properties, such as copper, silver, aluminum, and the like....
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3963811 |
Process for producing a composite metal powder
A process for producing a composite metal powder which comprises mixing a powder of a metal or alloy with a melt of a metal or alloy of a different class from that of the metal or alloy powder and...
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3962385 |
Method for manufacturing spherical hollow particles
A method for manufacturing spherical hollow particles by providing a large number of individual linear water jets arranged in a ring and converging at a single point, and passing a molten metal...
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