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| Number | Title | Issue Date |
| 7655067 | Method for processing aluminium in a rotary or a reverberating furnace The invention relates to a method for processing aluminum in a furnace consisting in introducing an aluminum-containing material and possibly one or several types of salt into the furnace, melting said material by heating with the aid of at least one burner supplied... | 02/02/2010 |
| 7267158 | Control of oxide growth on molten aluminum during casting using a high moisture atmosphere A method of producing aluminum castings which includes the steps of casting a molten alloy, contacting the surface of the molten alloy with a humidified atmosphere and solidifying the alloy. The method is particularly suited for aluminum-magnesium alloys such as AA ... | 09/11/2007 |
| 7216690 | Method and apparatus for semi-solid material processing A method of forming a material includes the steps of: vibrating a molten material at an ultrasonic frequency while cooling the material to a semi-solid state to form non-dendritic grains therein; forming the semi-solid material into a desired shape; and cooling the ... | 05/15/2007 |
| 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 |
| 6928869 | Stick for measuring the level of a molten metal bath A measurement rod for measuring the level of a liquid bath is cooled but is provided with a solid end piece so that the bath cannot solidify in front of the orifice of the measurement gas injected in the bath, for which the pressure is being measured. ... | 08/16/2005 |
| 6613118 | Method of heating molten aluminum in a crucible A container for molten metal which uses heat of solidification for heating the molten metal and method of heating body of molten aluminum.... | 09/02/2003 |
| 6607578 | Continuous vacuum refining method of molten metal and apparatus thereof A continuous vacuum refining method of molten metals, wherein impurities in the molten metal are eliminated by evaporation by stirring the molten metal (1) in the molten liquid stirring part B in the evacuated and pre-heated vacuum chamber, the molten liq... | 08/19/2003 |
| 6508977 | Reinforced refractory shaft design for fluxing molten metal A shaft for use with molten aluminum using an impeller mounted on the shaft comprising a protective refractory sleeve resistant to attack by molten aluminum, the protective sleeve employing a reinforcing media and mounted on the shaft to extend above and ... | 01/21/2003 |
| 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 |
| 6299828 | Shaft design for fluxing molten metal A shaft for use in a method for treating molten aluminum using an impeller mounted on the shaft comprising a protective refractory sleeve resistant to attack by molten aluminum, the protective sleeve mounted on the shaft by casting to extend above and bel... | 10/09/2001 |
| 6217631 | Method and apparatus for treating molten aluminum A method of heating a body of molten metal passing through a treatment bay. The method comprises providing a body of molten metal in a treatment bay and providing a baffle heater in the treatment bay to contact the molten metal. The baffle heater is compr... | 04/17/2001 |
| 6162279 | Method for fluxing molten metal using shaft design A shaft for use in a method for treating molten aluminum using an impeller mounted on the shaft comprising a protective refractory sleeve resistant to attack by molten aluminum, the protective sleeve mounted on the shaft by casting to extend above and bel... | 12/19/2000 |
| 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 |
| 6056803 | Injector for gas treatment of molten metals An injector for injecting gas into a molten metal. The injector has a rotor that is rotatable about an axis of rotation, the rotor having a cylindrical projection-free side surface, a bottom surface, and a cavity for receiving molten metal located central... | 05/02/2000 |
| 5718742 | Ladle and impeller rotation for fluxing molten metal An improved method for processing a body of molten metal using an impeller and a rotatable container, the method including increasing shear forces in the body of molten aluminum and reducing vortex formation, the method comprising the steps of providing a... | 02/17/1998 |
| 5616167 | Method for fluxing molten metal An improved method for treating a body of molten aluminum using an impeller suitable for dispersing fluxing gas or solid particles in the body of molten aluminum. The method produces increased shear forces in the body of molten aluminum and reduces vortex... | 04/01/1997 |
| 5573574 | Electrorefined aluminium with a low content of uranium, thorium and rare earths A process for obtaining aluminum of purity above 99.998%. A liquid aluminum raw material is subjected to a fractional crystallization to obtain prepurified aluminum crystals in a yield of between 50 and 80% and a liquid aluminum portion of lesser purity. ... | 11/12/1996 |
| 5565169 | Aluminum-magnesium alloys having high toughness A substantially lithium-free aluminum base alloy product having improved combinations of elongation and fracture toughness in an aged condition, the aluminum alloy product comprising at least 0.5 wt. % magnesium; 0.01 to 1 ppm Na; 0.01 to 1 ppm K; less th... | 10/15/1996 |
| 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 |
| 5415680 | Molten metal vacuum treatment and apparatus Disclosed is a method and apparatus of treating molten metal for reducing the amount of gaseous or volatile material contained therein. The method comprises providing a body of molten metal and contacting the molten metal with a porous member having a por... | 05/16/1995 |
| 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 |
| 5336294 | Removal of contaminants from molten metals Particles or inclusions are removed from a molten alloy by contacting the molten alloy with a material selected from the group consisting of aluminium silicate, magnesium silicate, zirconium oxide or a mixture of alumina-calcia and alumina-magnesia.... | 08/09/1994 |
| 5330555 | Process and apparatus for manufacturing low-gas and pore-free aluminum casting alloys The invention relates to a process and apparatus for manufacturing low-gas and pore-free aluminum casting alloys by vacuum degasification and densification of the melt. Contact between the aluminum melt and the atmospheric humidity of the alloying process... | 07/19/1994 |
| 5320803 | Process for making aluminum-lithium alloys of high toughness The toughness of Al-Li, Al-Mg and Mg-Li alloys is increased by a melting and refining process designed to reduce the concentration of alkali metal impurities below specified levels. The hydrogen and chlorine gas constituents are also significantly reduced... | 06/14/1994 |
| 5318278 | Apparatus for making mixtures of reactive melts A method for the preparation of a mixture of at least one reactive element or an alloy thereof and a liquid metal melt, including introducing the reactive element or alloy thereof, in a liquid state and under pressure, within, i.e. below the surface of, t... | 06/07/1994 |
| 5122184 | Molten salt coalescence in molten aluminum A method of treating molten aluminum containing a suspension of finely divided salt particles remaining after filtering molten aluminum is disclosed. The method comprises providing a body of molten aluminum containing the suspension of molten salt particl... | 06/16/1992 |
| 5114472 | Multistage rigid media filter for molten metal and method of filtering A filter system for removing solid impurities from molten metal is described comprising a housing containing vertically disposed rigid coarse filter facing the incoming flow of molten metal and capable of removing solids having a particle size of at least... | 05/19/1992 |
| 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 |
| 5085830 | Process for making aluminum-lithium alloys of high toughness The toughness of Al-Li, Al-Mg and Mg-Li alloys is increased by a melting and refining process designed to reduce the concentration of alkali metal impurities below about 1 ppm and preferably below about 0.1 ppm. The hydrogen and chlorine gas constituents ... | 02/04/1992 |
| 5057150 | Production of aluminum master alloy rod A continuous process is described for the production of an aluminum master alloy, e.g. an Al-Ti-B grain refining rod, in which molten aluminum is continuously passed through a confined reaction zone. Particulate titanium and/or boron precursor compounds, ... | 10/15/1991 |
| 5021087 | Process and apparatus for treating molten aluminum to add hydrogen gas This invention relates to a process and apparatus for treating molten aluminum prior to casting by adding a hydrogen-containing treating gas to the atmosphere over the molten aluminum during melting. A preferred treating gas is finely-atomized water vapor... | 06/04/1991 |
| 4869750 | Liquid metal launder A method of controlling the movement of particles entrained in a liquid metal flowing along a confined flow path having a substantially horizontal base characterized by the steps of: (1) disposing a first planar device within the flow path to cause the sh... | 09/26/1989 |
| 4668288 | Method of continuously casting a metal and an apparatus for continuously casting the same A method of continuously casting a metal and an apparatus for continuously casting a metal wherein such a metal as copper, aluminium and so on is degassed continuously by means of at least two vacuum chambers which are installed over a preserving containe... | 05/26/1987 |
| 4666561 | Method of evaporation Liquids, such as juices, milk, molten metal and the like are concentrated by forming uniformly-sized, small droplets in a precision droplet forming assembly (14) and deploying the droplets in free fall downwardly as a central column within an evacuated to... | 05/19/1987 |
| 4522784 | Casting metals In the production of alloys, particularly Al alloys, by a continuous casting process a supplementary alloy stream is continuously fed into a main metal stream running to the casting mould. The supplementary alloy stream preferably amounts to 1-20% of the ... | 06/11/1985 |
| 4521001 | Apparatus for removing gases from molten metal, especially molten aluminum An apparatus for removing gases from molten metal, especially from molten aluminum. A ceramic or similar melting receptacle or crucible is accommodated in a furnace. A partial pressure is produced between the removable cover of the furnace and the surface... | 06/04/1985 |
| 4518421 | Process for producing solid metal particles from a bath of metal The process concerns a selective refining of molten metals or alloys contained in a closed treatment container in the form of a bath 10. A solid or liquid cryogenic body 13 is brought into contact with the surface of the bath of metal 10 so as to convert,... | 05/21/1985 |
| 4511398 | Process for purifying aluminum with sodium Aluminum contaminated with at least one of the metals of the groups II b, III a, IV a and V a of the periodic table of elements is purified by means of sodium applied in liquid extraction in a separating column in the temperature range between the melting... | 04/16/1985 |
| 4443004 | Device for the treatment of a stream of aluminum or magnesium-based liquid metal or alloy during its passage The invention relates to a device for the treatment of a stream of aluminum or magnesium-based liquid metal or alloy during its passage, comprising a ladle formed by an external metal casing, a refractory lining, a channel for the admission of the crude l... | 04/17/1984 |
