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| Number | Title | Issue Date |
| 8083987 | Buoyant plugs for liquid metal control A method of initiating a pour of a liquid alloy comprises the steps of filling an interior of a crucible with a displacement plunger and the liquid alloy until a metal head of the liquid alloy exceeds a critical height. The crucible has a bottom pour opening with a ... | 12/27/2011 |
| 8066935 | Turbulence inhibiting impact well for submerged shroud or sprue poured castings An impact well configured to reduce the turbulence in a flowing fluid. The impact well has the shape of a frustum and includes an upper portion, an intermediate portion and a base portion. The base portion includes a domed portion that extends upwards into the inter... | 11/29/2011 |
| 8062577 | Alumina taphole fill material and method for manufacturing A high-temperature, heat-resistant fill material is disclosed. The high-temperature, heat-resistant fill material includes an alumina refractory waste material having one or more of a used alumina-magnesium-carbon material, a used high-alumina material and a used fu... | 11/22/2011 |
| 8062578 | Tilting-type automatic pouring method and a medium that stores programs to control the tilting of a ladle A method for controlling a ladle to pour molten metal into a sprue of a mold. The method includes obtaining a mathematical model describing a locus of positions where the molten metal flowing from the ladle drops on an upper surface of the sprue. The method further ... | 11/22/2011 |
| 8012405 | Regulation method for melt throughflow through a melt throughflow aperture A method for regulating metal melt throughflow through a melt throughflow aperture in a bottom nozzle of a metallurgical vessel is provided. The bottom nozzle has an upper nozzle arranged in a floor of the metallurgical vessel and a lower nozzle arranged below the u... | 09/06/2011 |
| 7858017 | Material melting and holding apparatus of metal molding apparatus and rod material melting method There is provided a method for melting a material rod in a material melting and holding apparatus of a metal molding apparatus where the material melting and holding apparatus provided for the metal molding apparatus includes a furnace body of a melting and holding ... | 12/28/2010 |
| 7749426 | Method for controlling molten metal material leaking in injection apparatus of metal molding apparatus A method for controlling a molten metal material in an injection apparatus that includes a cylinder body with a nozzle at a front end, and a discharge opening on a bottom side of a rear portion. Heating means are provided on an outer periphery of the cylinder body a... | 07/06/2010 |
| 7687017 | Multi functional pump for pumping molten metal The present invention features a multi-functional pump for pumping molten metal, which includes a base that is submerged in molten metal having at least two impeller chambers. The base includes one or more inlet openings and one or more outlet openings. Each outlet ... | 03/30/2010 |
| 7628952 | Method and apparatus for testing the integrity of a shroud seal on a ladle for a continuous casting installation Molten steel is conducted by a tubular shroud interconnecting a slide gate at a bottom tap hole of a ladle with the molten steel in an underlying tundish of a continuous caster. The flow path is confirmed to be isolated from contaminants in atmospheric air by applyi... | 12/08/2009 |
| 7556765 | Tapping pipe The present invention relates to a tapping pipe for a metallurgical melting vessel, such as a converter or an arc furnace. ... | 07/07/2009 |
| 7393497 | System and filter for filtering hard alpha inclusions from reactive metal alloys A system for filtering hard alpha inclusions from a reactive metal alloy, such as titanium, is provided. The system includes a vessel, a receptacle and a filter. The vessel is capable of holding the reactive metal alloy in a molten form, and can pour the molten reac... | 07/01/2008 |
| 7336692 | Induction furnace for melting semi-conductor materials An induction furnace includes an induction coil, an electrically non-conductive crucible having an inner diameter disposed within the induction coil, and an electrically conductive member disposed below the crucible and having an outer diameter which is further from... | 02/26/2008 |
| 7213634 | Offset mold process An offset mold process deflects a mold assembly being conveyed along a first path laterally of that path into engagement with a nozzle using a shuttle car. Molten metal is pumped into the mold assembly, which is either a cope and drag mold or a lost foam mold, from ... | 05/08/2007 |
| 7171326 | Method for operating a sliding gate, and sliding gate A method is provided for operating a sliding closure for a metallurgical vessel. The sliding closure includes two tensionable fireproof closure plates opposing one another, with each of the two closure plates being slideably positioned within a corresponding housing... | 01/30/2007 |
| 7169349 | Method and apparatus for delivering metallurgically improved molten metal A method and an apparatus for enhanced metallurgical processing of molten metal includes an enclosable ladle chamber (23) for reducing the escape of heat during transport of the ladle from a manufacturing vessel such as a furnace (13) to an intermediat... | 01/30/2007 |
| 7037462 | 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... | 05/02/2006 |
| 7033538 | Heated trough for molten aluminum A method of heating molten aluminum flowing in a heated trough member comprising the steps of providing a source of molten aluminum and providing a rough member comprised of a first side and a second side, the first and the second sides having outside surfaces, the ... | 04/25/2006 |
| 7025936 | Method and apparatus for preparing a sample for analysis of precious metal content This invention relates to a method for assaying an ore sample to determine the concentration of gold and PGMs therein. The method comprises the steps of separating an ore sample, combining the prepared ore sample with a lead-containing flux, inductively heating the ... | 04/11/2006 |
| 7013949 | Metal flow control A method and a system are for the control of a gas-containing hidden flow of molten metal in a space defined by a tubular device. From measurements in at least one predetermined layer of the metal flow in the space, an indication is obtained of the appearance of the... | 03/21/2006 |
| 6977059 | Molten metal shaft coupling system A molten metal pump shaft coupling system for use in the coupling or connection of elongated shafts to other components and equipment, and for the disconnection thereof. A coupling with internal discontinuous threads may be coupled with an externally threaded shaft,... | 12/20/2005 |
| 6929775 | Tundish impact pad An impact pad formed from a refractory material for reducing the turbulence of a molten metal poured therein. The impact pad has a plurality of sidewalls, each sidewall having a plurality of spherically shaped portions. The spherically shaped portions disperse the m... | 08/16/2005 |
| 6929773 | Slag detector for molten steel transfer operations A method of determining disturbances when discharging molten metal from a metallurgical container having an outlet into a receiving container. In steps of this process, a real time video image of the teeming stream is monitored to detect the presence of a slag phase... | 08/16/2005 |
| 6910523 | Strip casting apparatus Apparatus and method for casting metal strip by controlling the distance between the confining side plates confining the casting pool and the outer nozzle ends of discrete nozzle pieces of the delivery nozzle delivering the molten melt. The nozzle pieces defining th... | 06/28/2005 |
| 6841120 | Dispensing apparatus and method An apparatus for dispensing a molten material from a reservoir of molten material includes a dispensing chamber in communication with the reservoir and a first valve adapted to regulate communication of the dispensing chamber with the reservoir. A riser communicates... | 01/11/2005 |
| 6818175 | System for producing steel The invention relates to a device for producing steel. The invention device comprises a container (1, 101, 201). The metal used is molten, blown and refined in said container which comprises an upper component (5, 205) having at least one opening, a lo... | 11/16/2004 |
| 6737014 | Slag detector for molten steel transfer operations A method of determining disturbances when discharging molten metal from a metallurgical container having an outlet into a receiving container. In the first step of this process, one directly or indirectly detects mechanical vibrations caused by the discharge of molt... | 05/18/2004 |
| 6723275 | Vortex inhibitor with sacrificial rod An improved vortex inhibitor for separating slag from molten metal during the discharge of molten metal through a nozzle includes a uniform castable refractory body with a generally tapering shape, a hollow chamber within the body and an elongated sacrificial member... | 04/20/2004 |
| 6685876 | Method for automatically controlling hydraulic opener An automatic control method for a taphole opener for opening a taphole by giving impact and rotation to a drill unit holding a drilling rod and driving the drill unit forward and backward by a hydraulically driven feed motor, which method comprises the st... | 02/03/2004 |
| 6676888 | Swivel base tilting rotary furnace A method of, and apparatus for, recycling a metal by melting it to remove it from metal-containing scrap through the use of a tiltable, swivel rotary furnace, which is swiveled to a first station for receiving metal-containing scrap, tilted back and rotat... | 01/13/2004 |
| 6660219 | Method and device for emptying metallurgic melting vessels by tipping The invention relates to the emptying of melting vessels (1) by tipping. According to the invention, the melting vessel (1) is placed on column-shaped bases (6). During the tipping process, the melting vessel (1) is raised at the side and the base support... | 12/09/2003 |
| 6660220 | Apparatus and method for delivering an inert gas to prevent plugging in a slide gate The invention is directed to a dynamic control system that maintains an inert gas feed at a constant target gas flow rate sufficient to prevent or reduce alumina or alloy plugging within a slide gate discharge opening. The dynamic control system includes ... | 12/09/2003 |
| 6620372 | Method and device for drawing a molten material contained in a crucible A drawing-off device (18) is used to empty a molten material (28) such as glass contained in a cooled crucible (10), in which there is an elongated pour orifice (30), a cooled slide valve (32) and a bar (36) forming a thermal bridge between the molten mat... | 09/16/2003 |
| 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 |
| 6585928 | Dispensing system for molten aluminum and method A method of dispensing or pouring molten metal, e.g., aluminum, from a container or vessel, the flow rate controlled to minimize splashing of the molten aluminum exiting the container, the method comprising the steps of providing a container for containin... | 07/01/2003 |
| 6576039 | Method and apparatus for metal pouring A method and apparatus is disclosed to improve the metal yield by adjusting the tilt angle of a tilting vessel having a submerged tap hole. The tilt angle is adjusted in response to parameters inherent in the pouring process, i.e. the proximity of the ves... | 06/10/2003 |
| 6569223 | Method of manufacturing molten metal iron A method of manufacturing a molten metal iron by charging a starting material at least comprising a carbonaceous reducing material and an iron oxide-containing material into a rotary hearth furnace, reducing under heating the charged starting material int... | 05/27/2003 |
| 6562286 | Post mounting system and method for molten metal pump A molten metal pump includes a base member submerged in the molten metal, a support member supported above the level of the molten metal by a post extending from the base member through a clearance bore in the support member and a coupling securing the po... | 05/13/2003 |
| 6500382 | Method and apparatus for slag-free teeming of metal melt from a metallurgical melt vessel A method of slag-free teeming of metal melt includes arranging outside of the metal vessel and closely adjacent to the discharge edge of the vessel discharge opening, of a jetting lance an inclination of which relative to a bath surface in the vessel and ... | 12/31/2002 |
| 6485673 | Pouring device for metallurgic vessels and a method for controlling the quantity of discharge A pouring device for metallurgic vessels, particularly for steel melts, with slide plates which can be adjusted and slid out again one behind the other in a row under a vessel opening and into which filters can be inserted, and with an immersion pipe proj... | 11/26/2002 |
| 6471911 | Method and device for sealing a tap hole in metallurgical containers In a method for sealing a tap opening in a metallurgical container a plug with a plug sleeve and a refractory flowable material is provided having a metal rod or pipe surrounded by a protective pipe connected thereto. The plug sleeve and the protective pi... | 10/29/2002 |
