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| Number | Title | Issue Date |
| 7947215 | Heat treatment apparatus, heat treatment method, and recording medium storing computer program carrying out the same An experiment is conducted in advance, for finding a temperature of a cooling plate attained as a result of balancing between a temperature of a substrate after heat treatment and a temperature of the cooling plate at the time of cooling of the substrate. Then, befo... | 05/24/2011 |
| 7815845 | Method of degassing molten metal To degas a molten metal, a receptacle containing the molten metal and a layer of slag over the molten metal is positioned in a chamber, and the chamber is evacuated. As the pressure in the chamber reduces, gas is generated at the interface between the molten metal a... | 10/19/2010 |
| 6902696 | Overflow transfer furnace and control system for reduced oxide production in a casting furnace An apparatus for transferring molten metal from a melting furnace to a casting furnace is provided. A sensing and control system for the transfer of molten metal from a transfer furnace to a casting furnace is also described. The combination of the transfer apparatu... | 06/07/2005 |
| 6786082 | System for a non-invasive online continuous measurement of phase levels in converters or pyrometallurgical furnaces A non-invasive online system for continuous measurements of phase levels in a converter or pyrometallurgical furnace in smelting and conversion processes, consisting in a electrical signal generator, transducers that convert said electrical signals in mechanical wav... | 09/07/2004 |
| 6596221 | Metallurgical vessel having a tapping device and method for the controlled, slag-free extraction of molten metal from said vessel In a metallurgical vessel (1) having a tapping apparatus (5) for the slag-free withdrawal of liquid metal (3) from a molten metal bath (3) which is disposed in the vessel (1), a first leg (11) of a discharge duct (10) passes through the refractory vessel ... | 07/22/2003 |
| 6517604 | Apparatus and method for measuring the molten metal level in electromagnetic continuous casting An apparatus and method for measuring the level of a free surface of molten metal in an electromagnetic continuous casting process using an AC electromagnetic field. A detection coil is provided to detect the sum of a magnetic field applied from an induct... | 02/11/2003 |
| 6503292 | Molten metal treatment furnace with level control and method A molten metal treatment furnace (10) with metal treatment and level control includes a heating chamber (12) for containing and heating a supply of molten metal (60), a pump (22) connected to the heating chamber (12), a molten metal treatment chamber (16,... | 01/07/2003 |
| 6500228 | Molten metal dosing furnace with metal treatment and level control and method A dosing furnace (10) with metal treatment and level control includes a holding chamber (12) for containing a supply of molten metal (50), a pump (22) connected to the holding chamber (12), a molten metal treatment chamber (16, 18) located at an outlet (2... | 12/31/2002 |
| 6451246 | Molten metal vessel for filtering impurities A molten metal vessel includes a first chamber for containing molten metal such as molten aluminum therein, a filtration chamber in which impurities contained in the molten metal are removed, and a second chamber for reserving clean molten metal to be sup... | 09/17/2002 |
| 6379609 | Process for controlling the amount of metal metered The invention relates to a process for controlling casting parameters and in particular to the control of the metering of the molten metal in a casting chamber of a vacuum die-casting machine. Measurement devices connected to a computer determine the volu... | 04/30/2002 |
| 6334975 | Molten magnesium supply system A molten metal transfer pipe 52 for transferring an injection sleeve 51 has a bent pipe portion 3 thereof reduced in diameter to provide a throttle part 4 attaining a pressure loss effect. A melting and holding furnace 101 with a tilting mechanism has a m... | 01/01/2002 |
| 6309442 | Refractory material sensor for determining level of molten metal and slag and method of using An apparatus and method for indexing the slag-metal interface level in a metallurgical container uses an insulating refractory brick having a plurality of embedded conductor wires. Distal ends of the conductor wires are exposed at know, fixed distances fr... | 10/30/2001 |
| 6290900 | Molten metal vessel for filtering impurities A molten metal vessel includes a first chamber for containing molten metal such as molten aluminum therein, a filtration chamber in which impurities contained in the molten metal are removed, and a second chamber for reserving clean molten metal to be sup... | 09/18/2001 |
| 6255983 | Degasser guide Radar is used to measure not only the level of slag on molten steel but also its thickness; the measurement is used to calculate the volume of slag, and, in turn the amount of additives for slag treatment. Time-of-flight data are used to identify peaks re... | 07/03/2001 |
| 6004504 | Method and apparatus for controlling bath level and measurement of bath characteristics A method and apparatus for improved control of continuous electric arc furnace steelmaking in which a charge velocity detector measures charge velocity of metallic charge introduced to the furnace. A charge mass detector measures a charge mass of metallic... | 12/21/1999 |
| 5827474 | Apparatus and method for measuring the depth of molten steel and slag Both an apparatus and method for measuring the depth of slag and molten metal contained in a tundish, ladle, electric furnace, or other vessel is provided. The apparatus includes a voltmeter for comparing the electrical potential of the steel, the slag-st... | 10/27/1998 |
| 5785732 | process and apparatus for recovering Na from spent NaS cells A process for recovering Na from a spent NaS cell, includes the steps of forming an opening in a spent NaS cell, flowing down molten Na from an interior of the NaS cell through the opening in a heating oil vessel, passing the molten Na through a filter pl... | 07/28/1998 |
| 5700422 | Molten metal supply device A molten metal supply device capable of supplying molten metal with high precision to an injection sleeve of a die-casting machine, and capable of reducing molten metal leakage and damage to a molten metal conduit bridging between a holding furnace and th... | 12/23/1997 |
| 5695713 | Device for the detection of a level of molten metals A device for the detection of a level of molten metal in a molten vessel, especially a dosing furnace, is proposed in which a sensor made of electrically conductive material and which emits a signal on contact with the molten metal, is inserted, electrica... | 12/09/1997 |
| 5669956 | Apparatus and method for molten metal depth detection Apparatus and method for determining when the depth of molten (18) poured into a vessel (12) has reached a selected level. A conduit (22) connected to a source of pressurized gas and having an orifice (43) at its distal end (38) restricts the flow of gas ... | 09/23/1997 |
| 5662859 | Constant molten metal surface level retaining furnace integrally provided with melting unit A constant molten metal surface level retaining furnace is integrally provided with a melting unit which permits a space for equipment to be reduced to efficiently carry out transfer of molten metal. This furnace comprises, a heating unit (16) for heating... | 09/02/1997 |
| 5507854 | Method and apparatus for measuring displacement of molten metal First and second electrodes are inserted into molten metal. A first pseudo random signal is transmitted to the first electrode, and at the same time the first pseudo random signal and a second pseudo random signal which has the same pattern as the first p... | 04/16/1996 |
| 5411240 | Furnace for delivering a melt to a casting machine A two-chamber furnace for delivering a melt to a casting machine comprises a storage chamber having an inlet device for material to be melted, a removal chamber having an outlet device for removing the melted material, and an intermediate chamber arranged... | 05/02/1995 |
| 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 |
| 5263689 | Apparatus for making alloy power Apparatus for producing a metal powder includes a cooled hearth structure in which a metallic alloy is melted and a heat source above the hearth positioned to heat the melt in the hearth. The cooling of the hearth causes a protective hearth skull to form ... | 11/23/1993 |
| 5190717 | Metal pouring system A method and apparatus are described for controlling the rate of pouring of molten metal. Examples are given of pouring metal onto a steel strip to form a coating having a uniform controlled thickness thereon. The method comprises the use of an intermedia... | 03/02/1993 |
| 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 |
| 5139236 | Melt facility for continuous upcaster A furnace system particularly adapted for use with a continuous upcaster. Instead of employing discrete furnaces, tundishes, ladles and the like, the instant unitary system employs a furnace, a feeding mechanism for directly introducing material into the ... | 08/18/1992 |
| 5105874 | Process for continuously determining the thickness of the liquid slag on the surface of a bath of molten metal in a metallurgical container According to this process: the position in respect of height of the "molten metal (2)/liquid slag (3)" interface (M) is continuously determined. Further the position of an isotherm (IS) located at the "liquid slag (3)/powder layer (4)" interface is contin... | 04/21/1992 |
| 5090603 | Metal pouring system A method and apparatus are described for controlling the rate of pouring of molten metal. Examples are given of pouring metal onto a steel strip to form a coating having a uniform controlled thickness thereon. The method comprises the use of an intermedia... | 02/25/1992 |
| 5020778 | Apparatus for stirring molten metal The invention provides a new stirring apparatus for stirring the liquid metal contents of a furnace, particularly the shallow furnaces used in the processing of aluminum and its alloys. The apparatus consists a reservoir separate from the furnace of relat... | 06/04/1991 |
| 4928933 | Electromagnetic molten metal supply system This invention relates to an electromagnetic molten metal supply system in a die cast machine and so forth, in which an electromagnetic pump is immersed in a furnace for maintaining molten metal, and the supply tube of the pump is connected to an injectio... | 05/29/1990 |
| 4899994 | Device for monitoring the level of molten metal in a converter A device for monitoring the level of molten metal in a converter comprises a γ-radiation source, a γ-radiation receiver connected to an input of an amplifier connected to a pulse amplitude analyzer, a timer, a molten metal level data display unit. The d... | 02/13/1990 |
| 4893507 | Device to measure the level of liquid metal in a crystallizer of a continuous casting ingot mould Device to measure the level of liquid metal in a crystallizer of a continuous casting ignot mould, the device employing a source of an electromagnetic field and providing for an emitter coil (17) and at least one receiver coil (18) and including the suppl... | 01/16/1990 |
| 4880212 | Device for detecting the level of the slag in a metal pool The device has a lance. The lance is moved towards said molten bath level. An antenna is provided at a downward end of the lance for coaction with the slag interface (interfaces), when the lance is moved towards the slag interface (interfaces). A sensitiv... | 11/14/1989 |
| 4865234 | Pouring control device A device for control of the pouring process in molds, wherein molten metal is adapted to be tapped from a vessel (e.g. a pouring furnace, a ladle or a tundish) provided with a stopper or other flow-control valve means. Between the vessel and the mold at l... | 09/12/1989 |
| 4844427 | Quenching apparatus A method and apparatus for measuring the bulk temperature of a workpiece in a quenching apparatus. The temperature is calculated by monitoring the change in size of the bore in the workpiece.... | 07/04/1989 |
| 4842254 | Apparatus for purifying lithium The invention relates to an apparatus for purifying lithium, formed by a sealed enclosure comprising a heated upper portion 1 provided with a container 9 in which the molten lithium 11 is agitated and from which the impurities evaporate, and a cooled lowe... | 06/27/1989 |
| 4604137 | Method and apparatus for controlled melt refining A controlled melt refining method is provided that ensures rapid and consistent refining by controlling the gas hold-up (ƊH/H), as an index for the intensity of boiling, at a predetermined value in the range of 0.1-0.5. The method comprises (a) covering ... | 08/05/1986 |
| 4544140 | Device for measuring the level of the interface between a slag layer and a bath of molten metal in a metallurgical vessel The device is to include a cylindrical carrier member for insertion into a tubular lance, also having an overhanging flange on the opposite side thereof being disposed a tapered electrode carrier either a cone with rounded apex or a symmetrical wedge with... | 10/01/1985 |
