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| Number | Title | Issue Date |
| 7892319 | Crust breaker and ore dispenser A crust breaker and ore feeder device for electrolytic aluminum smelting employs an in-line three-position pneumatic cylinder capable of moving the plunger shaft to a fully raised position, to a fully lowered position, and to an intermediate, partly lowered position... | 02/22/2011 |
| 7534284 | Flux injection with pump for pumping molten metal A method of dispersing flux in molten metal includes providing a source of flux powder and a source of gas. An impeller is disposed on an end of a shaft inside the impeller chamber of a base made of heat resistant material. The base is submerged in the molten metal ... | 05/19/2009 |
| 7452402 | Method for producing foamed aluminum products by use of selected carbonate decomposition products A method for producing an aluminum foam product wherein reactive gas producing particles are introduced into an aluminum alloy melt under controlled conditions and subjected to agitation to induce the production of foam-stabilizing by-products, and, under certain co... | 11/18/2008 |
| 7347886 | Method for introducing additives into fluids The method introduces additives into flowing gas, fluid or fluidized media in a pulsed high pressure manner. The nozzle needle of at least one nozzle is variable and highly precisely moved for the introduction by means of a device and in such a way that additive is ... | 03/25/2008 |
| 7306643 | Method for introducing additives to liquid metal, ceramic/metallic powder The method introduces additives into a flowing melt or fluidized metallic/ceramic powder media in a pulsed high pressure manner. The nozzle needle of at least one nozzle is variable and highly precisely moved for the introduction by means of a device and in such a w... | 12/11/2007 |
| 7258158 | Increasing stability of silica-bearing material Method and apparatus for prolonging the stability (working life) of a ceramic slurry and other aqueous mixture or dispersion containing a liquid silica-bearing or other component as well as the raw liquid silica-bearing component in ambient air over time by providin... | 08/21/2007 |
| 7175687 | Advanced erosion-corrosion resistant boride cermets A cermet composition represented by the formula (PQ)(RS) comprising: a ceramic phase (PQ) and binder phase (RS) wherein, P is at least one metal selected from the group consisting of Group IV, Group V, Group VI elements, Q is boride, ... | 02/13/2007 |
| 7172641 | Ultra-hard boride-based metal matrix reinforcement A composite of M/AlMgB14 or M alloy/AlMgB14 is synthesized, where M=Al, Ti, W, or Cu. Small particles and/or fibers of AlMgB14 are distributed throughout a metal matrix to strengthen the resulting composite. ... | 02/06/2007 |
| 7160627 | Boron containing ceramic-aluminum metal composite and method to form the composite A boron containing ceramic-aluminum metal composite is formed by mixing a boron containing ceramic with a metal powder comprised of aluminum or alloy thereof, shaping the mixture into a porous preform, contacting the preform with an infiltrating metal comprised of a... | 01/09/2007 |
| 6960239 | Process and apparatus for adding particulate solid material to molten metal An apparatus is provided for the treatment of molten metal, e.g. aluminum, with a particulate treatment agent and a gas. This includes a vessel for holding molten metal, a rotary device for breaking up particulate treatment agent and gas within the molten metal and ... | 11/01/2005 |
| 6939388 | Method for making materials having artificially dispersed nano-size phases and articles made therewith A method for forming a nanocomposite material and articles made with the nanocomposite material are presented. The method comprises providing a molten material; providing a nano-sized material, the nano-sized material being substantially inert with respect to the mo... | 09/06/2005 |
| 6916356 | Method for preparing aluminum-silicon alloys A method for preparing Al—Si alloys by introducing into the molten aluminum, at a temperature of between 700 and 850° C., metallurgical silicon particles having a granulometry of less than 10 mm. The silicon particles, upon reaching the temperature of the molten ... | 07/12/2005 |
| 6811589 | Method for adding solid zinc-aluminum to galvanizing baths The process of the present invention is directed to a method for making zinc or zinc-aluminum alloy additions to galvanizing baths. The process involves addition of a wire of zinc or zinc-aluminum alloy introduced directly into a molten galvanizing bath to more rapi... | 11/02/2004 |
| 6733566 | Petroleum coke melt cover for aluminum and magnesium alloys A method for preventing oxidation of molten aluminum alloy and magnesium alloy surfaces, the method comprising providing a molten aluminum alloy or magnesium alloy having a molten aluminum or magnesium alloy surface; covering the molten aluminum or magnesium alloy s... | 05/11/2004 |
| 6485541 | Method to decrease loss of aluminum and magnesium melts A method to minimize oxidation of metal during melting processes is provided, the method comprising placing solid phase metal into a furnace environ-ment, transforming the solid-phase metal into molten metal phase having a molten metal surface, and creati... | 11/26/2002 |
| 6468674 | Coating composition for steel--product, a coated steel product, and a steel product coating method A method of coating of steel products such as plate and sheet using an aluminum-zinc coating alloy includes modifying the coating bath with a particulate compound constituent in effective amounts to decrease the spangle facet size of the coated product, i... | 10/22/2002 |
| 6440582 | Coating composition for steel product, a coated steel product, and a steel product coating method A method of coating of steel products such as plate and sheet using an aluminum-zinc coating alloy includes modifying the coating bath with a particulate compound constituent in effective amounts to decrease the spangle facet size of the coated product, i... | 08/27/2002 |
| 6406516 | Method for making high volume reinforced aluminum composite by use of dipping process Disclosed are composition and a method for making a high volume reinforced Al composite by use of a dipping process. Through the method comprising mixing 20-50 wt % of exothermic reaction-causing Ti and C or Ti and B powders, 20-60 wt % of exothermic reac... | 06/18/2002 |
| 6375712 | Method of removal of light metals from aluminum Improved apparatus and method are described for the removal of light metals; sodium, lithium, calcium and magnesium, from virgin aluminum tapped from a Hall Heroult reduction cell using LiF-modified or LiF+MgF2 electrolyte. The method is perfor... | 04/23/2002 |
| 6336955 | Method of eliminating phosphorus and/or antimony from molten aluminum An improved method of eliminating phosphorus and/or antimony from molten aluminum containing phosphorus and/or antimony is provided, including the step of adding magnesium or calcium to the molten aluminum maintained at a temperature of 650° to 850° C. ... | 01/08/2002 |
| 6315944 | Plant for casting metal with particles suspended therein Molten metal (6) in a furnace (5) and containing particles of solid material (not shown) in suspension is cast in moulds (1) conveyed continuously past the mould-filling station shown by a conveyor (4). To maintain the particles in suspension and keep the... | 11/13/2001 |
| 6290748 | TiB2 particulate ceramic reinforced Al-alloy metal-matrix composites Two methods of producing a ceramic reinforced Al-alloy metal-matrix composite are described. The first one comprises the steps of dispersing a ceramic phase (of titanium diboride) in a liquid aluminum or aluminum alloy, mixing the ceramic phase with a cry... | 09/18/2001 |
| 6235078 | Iron additive for alloying non-ferrous alloys The present invention concerns additives for non-ferrous, liquid metals. The additives consist of compacted bodies of essentially pure iron particles.... | 05/22/2001 |
| 6228185 | Metal matrix alloys The invention provides a process for producing an aluminium-based matrix melt, having boride particles dispersed therein, which is castable, and yet when cast produces a product having a surprisingly good combination of mechanical properties such as stiff... | 05/08/2001 |
| 6149710 | Additive for adding one or more metals into aluminium alloys Briquettes or tablets to be added to an aluminium melt, are made up by the combination of an agglutinated powder which include, at least, an aluminium powder, a powder of one or more metals or alloys including those to be added, and a wax-type organic com... | 11/21/2000 |
| 6106588 | Preparation of metal matrix composites under atmospheric pressure A method and apparatus are provided for mixing nonmetallic reinforcing particles into a molten metal or metal alloy for the production of stir-cast metal matrix composite (MMC) materials under atmospheric or near-atmospheric pressure. In a preferred embod... | 08/22/2000 |
| 6051049 | Utilization of strontium aluminate in steelmaking Novel utilizations of strontium aluminate, a by-product of the manufacture of strontium, are disclosed in connection with the art of steelmaking. It is useful as a synthetic slag covering for molten iron or steel, as well as in the foaming slag practice, ... | 04/18/2000 |
| 6024777 | Compacted steel powder alloying additive for aluminum melts, method of making and method of using A compacted steel powder in particulate form is used as an alloying additive for aluminum melts. The additive is in the form of a wafer which is smooth on one side and corrugated on the other side such that its thickness is 1 mm at the trough and 2-3 mm a... | 02/15/2000 |
| 5741348 | Method for refining an aluminium scrap smelt A method of refining a melt of aluminum scrap material which comprises metallic aluminum and impurities including iron, in order to obtain a target iron level. The method includes the steps of determining the initial amounts in the melt of Mn, Fe and Si, ... | 04/21/1998 |
| 5632801 | Process for making metal-matrix composites mixed with reinforcing materials by forced drafting A process for making metal-matrix composites includes: purging a refining chamber filled with molten metal matrix in a furnace by an inert gas such as nitrogen gas; filling a reinforcing material, preferably with particulates, in a bucket suspended above ... | 05/27/1997 |
| 5614150 | Method for producing refractory aluminide reinforced aluminum A method for producing aluminum matrix composites containing refractory aluminide whiskers or particulates which are formed in-situ is disclosed. Aluminum and refractory metal materials are blended in powder form and then heated to a temperature above the... | 03/25/1997 |
| 5462580 | Method for molten metal treatment Disclosed is an improved method for dispersing a treatment media in a body of molten metal using an impeller, nozzles, and other mixing means to disperse the media in the body of molten metal, the method producing increased shear forces in the body of mol... | 10/31/1995 |
| 5462581 | Method for treating molten metal There is provided an improved method for dispersing a treatment media in a body of molten metal using an impeller to disperse the media in the body of molten metal, the method producing increased shear forces in the body of molten metal and reducing vorte... | 10/31/1995 |
| 5462612 | Airtight aluminum alloy casting and its manufacturing method An aluminum alloy casting comprising 4.0 to 13.0% of Si, 4.5% or below of Cu, 1.5% or below of Mg, and the rest of Al in weight ratio is produced by a production method which adds a metallic hydride to a molten aluminum alloy for casting at a temperature ... | 10/31/1995 |
| 5424031 | Grain refining alloy and a method for grain refining of aluminum and aluminum alloys The present invention relates to a method for grain refining of aluminium and aluminium alloys wherein a siliconboron alloy containing between 0.01 to 4.0% by weight of boron is added to molten aluminium or aluminium alloy in such an amount that the resul... | 06/13/1995 |
| 5405578 | Method for preparing master alloy hardeners for use in preparing an aluminum alloy This invention relates to master alloy hardeners for use in preparing aluminum base alloys. The respective concentrations of the alloying elements in the master alloy hardener are a multiple equal to or greater than 2 of the concentrations of such element... | 04/11/1995 |
| 5401338 | Process for making metal-matrix composites reinforced by ultrafine reinforcing materials products thereof A process for making metal-matrix composite includes adding ultrafine reinforcing material having a particle size as fine as 0.05 μm into the metal alloy matrix in a refining furnace to be homogeneously dispersed in the matrix for producing metal-matrix ... | 03/28/1995 |
| 5397377 | Molten metal fluxing system An improved process for treating a body of molten metal is disclosed wherein a rotating impeller is used to disperse treatment media in the body. The process comprises the steps of providing a body of molten metal to be treated, the body having an upper r... | 03/14/1995 |
| 5364450 | Molten metal treatment There is provided an improved method for dispersing a treatment media in a body of molten metal using an impeller to disperse the media in the body of molten metal, the method producing increased shear forces in the body of molten metal and reducing vorte... | 11/15/1994 |
| 5100618 | Production of an aluminum grain refiner A process is described for producing an aluminum grain refiner, such as Al-Ti-B grain refiner. Molten aluminum is continuously flowed as a bottom layer along a substantially horizontal or slightly inclined trough. Titanium or boron compounds reducible by ... | 03/31/1992 |
