Class 75/339 - Gas used is air

Subclass of Class 75 - Specialized metallurgical processes, compositions for use therein, consolidated metal powder compositions, and loose metal particulate mixtures
Definition: Process in which the gas used is air.
No. of patents: 29
Last issue date: 06/12/2007

Number	Title	Issue Date
7229715	Anode for battery An anode includes zinc particles. At least about 30% by weight of the zinc particles are spherical. ...	06/12/2007
7192464	Composition for powder metallurgy The present invention provides a composition for use in pressed powder metallurgy. The composition includes a plurality of substantially dry, discrete agglomerates, a portion of which include a first metal particle adhered to a second metal particle by a binder that...	03/20/2007
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 molten metal therein and two second paths are introduced into the chambe...	02/27/2007
6915963	Spraying method and a spray system for coating liquids Cooling gas is fed through a cooling-gas line (14) to a liquid atomizer, preferably an atomizing bell (4) in order to cool its end surface (24) configured underneath streaming coating liquid and therefore in contact with the ambient air. The coo...	07/12/2005
6805726	Method for producing a powder A method for producing a powder by pulverizing a stream of molten metal using a pulverization gas, which directly hits the molten metal stream, whereby a) a reactive gas is used as the pulverization gas such that a compound is formed by the reaction of the pulveriza...	10/19/2004
6761751	Method of making a FeCrAl material and such material A method of producing an FeCrAl material by gas atomization, and a high temperature material produced by the method. In addition to containing iron (Fe), chromium (Cr), and aluminium (Al) the material also contains minor fractions of one or more of the materials mol...	07/13/2004
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 atomizing medium jet (3) emitted from a nozzle (2)...	06/08/2004
6475263	Silicon aluminum alloy of prealloyed powder and method of manufacture A silicon base binary alloy of prealloyed powder having less than 10% aluminum, excluding zero. The alloy may be in the form of gas atomized prealloyed powder, which powder may be consolidated to form an article. Preferably, the article is a sputtering ta...	11/05/2002
6423113	Continuous fluid atomization of materials in a rapidly spinning cup Fine powders are made from molten metals and alloys on a continuous basis. A rapidly spinning shallow cup has an atomizing fluid such as water, oil or any other hydrocarbon supplied to the cup to form a thin sheet or layer which is distributed on the inne...	07/23/2002
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 flowing through the nozzle. The split molten metal is then ...	07/03/2001
6093449	Atomizer for spray forming ring structures A method and spray forming system for effectively spraying the inner diameters of intricate objects and makes inner diameter spray forming practical for articles that have various and complicated inner geometries. The spray forming system can include at l...	07/25/2000
5993509	Atomizing apparatus and process This invention relates to a method and apparatus for atomizing a liquid stream of metal or metal alloy. This invention relates to producing powders as well as to spray deposition process. During atomizing, a backpressure is created below the exit of the l...	11/30/1999
5917113	Process for producing spherical metal particles A process for producing spherical metal particles comprises the step of spraying a molten metal in a chamber filled with a refrigerant gas through a centrifugal atomizer, wherein the refrigerant gas is a composition comprising nitrogen and oxygen gases or...	06/29/1999
5268018	Controlled process for the production of a spray of atomized metal droplets A process and apparatus for producing a spray of atomized metal droplets includes providing an apparatus that forms a spray of molten metal droplets, the apparatus including a metal source and a metal stream atomizer, producing a stream of liquid metal fr...	12/07/1993
5213610	Method for atomizing a titanium-based material A method for atomizing a titanium-based material to particulates in a controlled atmosphere. In the method, titanium is skull melted in a crucible. The molten titanium-based material is transferred to a heated tundish. The molten titanium-based material m...	05/25/1993
5205986	Aluminium-strontium master alloy and process of making the alloy A process is described for the preparation of an aluminum-strontium master alloy suitable for use as structure refiner during the solidification of molten aluminum-silicon alloys, comprising atomizing a stream of molten alloy containing aluminum and 5 to ...	04/27/1993
5202131	Apparatus for making metal powder, with a supply tank, a pouring ladle and a fall shaft An apparatus for making metal powders has a supply tank (2) for the molten starting material, at least one exchangeable pouring funnel (11, 13), at least one atomizing nozzle (12, 14) and at least one fall shaft (7) disposed thereunder for the solidificat...	04/13/1993
5176874	Controlled process for the production of a spray of atomized metal droplets A process and apparatus for producing a spray of atomized metal droplets includes providing an apparatus that forms a spray of molten metal droplets, the apparatus including a metal source and a metal stream atomizer, producing a stream of liquid metal fr...	01/05/1993
5114470	Producing void-free metal alloy powders by melting as well as atomization under nitrogen ambient A method of producing nitrogenated metal alloys which involves melting a al alloy under a nitrogen atmosphere and subsequently gas atomizing the molten alloy with nitrogen gas has been found to produce alloys powders having a high nitrogen content and a ...	05/19/1992
4988464	Method for producing powder by gas atomization A method for producing power by atomizing a stream of molten material by contact with a swirling annular gas stream having an angular to axial velocity ratio sufficient to cause some of the gas to flow in the axially opposite direction from that of the ga...	01/29/1991
4606869	Method of making air atomized spherical zinc powder The present invention provides a method for the production of spherically-shaped zinc powders using an atomization process. The method involves an alloying addition of lithium to the molten zinc prior to atomization. The invention also provides for spheri...	08/19/1986
4597919	Process for the production of particulate metal An improved apparatus for the production of particulate metal is disclosed. The apparatus includes a containment vessel having a sidewall and an endwall, a source of metal external to the vessel, nozzle means carried by the endwall and providing communica...	07/01/1986
4585601	Method for controlling the production of atomized powder An improved system for the production of particulate metal is disclosed. The system comprises a containment vessel having a sidewall extending to an endwall, a source of metal external to said vessel and nozzle means carried by said endwall, said nozzle m...	04/29/1986
4576767	Method for controlling powder production An improved apparatus is disclosed for the production of particulate metal comprising a containment vessel having a sidewall extending to an endwall, a source of metal external to the vessel, nozzle means carried by the endwall, the nozzle means including...	03/18/1986
4548768	Method for the production of atomized metal particles Apparatus is provided for the production of atomized metal comprising a containment vessel having a sidewall terminating in a bottom plate through which atomizing gas and molten metal from a molten metal source external to said vessel enter said vessel th...	10/22/1985
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 jets by virtue of which a disintegrating medium exits from t...	06/09/1981
4235631	Corrosion-resistant dental alloy having improved handling characteristics A corrosion-resistant dental alloy shows improved handling characteristics during the filling of a dental cavity with an amalgam of the alloy. The alloy particles comprise a mixture of silver, tin and copper particles having a mean particle size of betwee...	11/25/1980
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 atomizing the resulting molten mixture by jetting a high s...	06/15/1976
3961995	Mother alloy of aluminum, titanium and boron and process for fabrication An aluminum-titanium-boron mother alloy having a boron content of 0.2 to 0.8% by weight and a titanium content such that Ti - 2.2 B ࣙ 3.9%, in which the matrix has a preponderant proportion of grains of less than 30 microns in size, and contains fine Ti...	06/08/1976

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Class 75/339 - Gas used is air