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| Number | Title | Issue Date |
| 7381238 | System and method of electromagnetic influence on electroconducting continuum Thus, as shown by an exact electrodynamic computation of EMBF and the estimations described above of the velocity of turbulent flows arising due to their effect, application of amplitude- and frequency-modulated helically traveling (rotating and axially traveling) e... | 06/03/2008 |
| 7264767 | Method and device for reducing the oxygen content of a copper melt A process and a device serve for decreasing the oxygen content of a copper melt. One or more flushing plugs, from which a scavenging gas emerges, are arranged in the perpendicular direction in the lower region of the copper melt. The scavenging gas ascends into the ... | 09/04/2007 |
| 7246649 | Diecast machine A diecast machine comprises: a sleeve extending in the vertical direction; a plunger moving upward in the vertical direction inside the sleeve; a mold disposed above an upper side of the sleeve; a case member constituted of a nonconductive member, which covers at le... | 07/24/2007 |
| 6358297 | Method for controlling flux concentration in guide tubes A method for controlling electromagnetic flux concentration in a discharge guide tube for a metal refining apparatus is provided. The discharge guide tube comprises a base plate, an extension, a central orifice that extends through the extension from a so... | 03/19/2002 |
| 6287364 | Method for producing copper alloy ingot A method for producing a copper alloy ingot with suppressed casting defects, segregation of components and lower oxide content comprising heating a copper alloy material in a graphite crucible to melt the copper alloy material. The molten alloy in the gra... | 09/11/2001 |
| 6010552 | Apparatus for the process of melting and purification of aluminum, copper, brass, lead and bronze alloys The present apparatus is comprised by two magnetic induction sets, one for melting of the raw material and the second for purification of molten metal; each set comprises a pot or crucible (1, 1'), an electromagnetic device, a filter (11) and a power supp... | 01/04/2000 |
| 5948138 | Method and apparatus for stirring of molten metal using electromagnetic field Method and apparatus for controlling stirring of molten metal(24) during processing in a metallurgical vessel(20), free of mechanical-contact with the molten metal(24). Efficiencies of metal processing and improvements in metallurgical properties are achi... | 09/07/1999 |
| 5772320 | Method and aparatus for mixing a metal matrix composite An method and apparatus is described for mixing solid particulates in a molten metal matrix to form a metal matrix composite product flow. The apparatus a refractory vessel to hold the metal matrix; a refractory conduit in communication with both the inle... | 06/30/1998 |
| 5677926 | Crucible for the inductive melting of metals Vertical, parallel palisades (3) are distributed around the perimeter of a circle, spaced apart by gaps, surrounding the melt. An annular plate (4) supports the palisades (3), the palisades being provided with cavities through which a coolant flows. An in... | 10/14/1997 |
| 5462572 | Method and a device for stirring a molten metal A method and a device for inductively stirring a molten metal. Magnetic fields are applied to act on the melt through a wall (11) which comprises a magnetic material. Said wall is saturated by a magnetic direct field such that an anisotropically directed ... | 10/31/1995 |
| 5226949 | Method and apparatus for removal of floating impurities on liquid A housing has a pair of chambers separated by a vertical wall. A hearth is on one side of the wall in the housing and is adjacent to an orifice which allows a stream of material, such as molten metal to pass from one chamber to the other. A gas is caused ... | 07/13/1993 |
| 5071471 | Method of and apparatus for removing non-metallic inclusions from molten metal A method of removing non-metallic inclusions from a molten metal comprises the step of simultaneously applying both a horizontal rotation of the molten metal and heating of the molten metal by induction heating. After the simultaneous application of rotat... | 12/10/1991 |
| 5011528 | Pumping liquid metals Liquid metals are centrifugally pumped from a static container without the necessity for employing a mechanical impeller. A powerful rotating magnetic field surrounding the static container causes the metal to be rotated vigorously and the velocity head s... | 04/30/1991 |
| 4933005 | Magnetic control of molten metal systems A static high intensity magnetic field is applied to electromagnetically-stirred molten metal to minimize turbulence in the molten metal. One application of the invention is to minimize meniscus distortions and/or surface disturbances produced by the elec... | 06/12/1990 |
| 4931090 | Pneumatic steelmaking vessel and method of producing steel The invention encompasses a pneumatic steelmaking vessle and a method for the production of steel from hot carbon-bearing metallized raw materials such as direct reduced iron. The vessle is a refractory-lined ladle, having an eccentric ladle cover with an... | 06/05/1990 |
| 4927460 | Induction melting and stirring Method of and apparatus for providing agitation of the melt in the induction melting of metals. A medium frequency melting power supply (12) of an induction furnace or crucible (10) acts in conjunction with a modulating circuit incorporating a wave form g... | 05/22/1990 |
| 4867786 | Electromagnetic stirring method In an electromagnetic stirring method, one or two electromagnetic inductors are provided to define an internal space therein or therebetween, a plurality of pairs of opposed magentic poles are provided on the inner side walls of the electromagnetic induct... | 09/19/1989 |
| 4828610 | Method and apparatus for modification of the rate of heat or mass transfer in a stream of liquid metal The rate of heat or mass transfer in a stream of liquid metal is enhanced by producing a stream of liquid metal in a conduit, creating turbulent flow at least in one plane of the stream and at least in a section of the conduit, and applying a magnetic fie... | 05/09/1989 |
| 4820342 | Method of reducing lining wear Lining wear in an arc heated ladle containing a bath of melt and slag is reduced by rotating the melt in a horizontal direction to provide a concave bath surface in which the slag accumulates towards the center, thus preventing the slag attacking the ladl... | 04/11/1989 |
| 4808219 | Method for treating metal melts and apparatus for carrying out the method A treatment of metal melts comprising the addition of chemically active substances or alloying elements with subsequent mixing taking place as a result of electromagnetic force exerted on the metal melt. The melt, which fills a substantially cylindrical v... | 02/28/1989 |
| 4778518 | Slag-melt reactions with improved efficiency A method and a device for improving the efficiency of slag-bath reactions, for example in connection with sulfur removal from steel melts, involves stirring the melt with at least one inductive stirrer in such a way that the stirring force includes both a... | 10/18/1988 |
| 4775521 | Process for the production of ferrous sulphide Ferrous sulphide is produced by forming a melt of a source of sulphur, suitably flotation grade iron pyrites, and a source of iron, suitably steel, in an electric induction furnace until reaction has ocurred, allowing a slag to form and removing the slag ... | 10/04/1988 |
| 4702767 | Method of purifying a bearing steel A high-quality bearing steel contains 0.70 to 1.10% by weight of C, 0.15 to 1.60% by weight of Si, 0.15 to 1.15% by weight of Mn, 0.010% by weight or less of P, 0.002% by weight or less of S, 0.50 to 1.60% by weight of Cr, 0.015% by weight or less of Al, ... | 10/27/1987 |
| 4582533 | Method of and prealloy for the production of titanium alloys A masteralloy of the following composition: 13 to 15% by weight tin, 27 to 29% by weight zirconium, 13 to 15% by weight molybdenum, up to 0.6% by weight silicon, less than 0.5% by weight unavoidable impurities and balance aluminum is produced and utilized as a melt... | 04/15/1986 |
| 4512801 | Apparatus for and method of desulfurizing and heating molten metal Apparatus for desulfurizing and heating molten metal includes a refractory body having an open top receptacle, an outlet and a passageway communicating the receptacle with the outlet. An electric coil is disposed in surrounding relation to the receptacle.... | 04/23/1985 |
| 4395281 | Treating molten pig iron in a torpedo Pig iron is tapped from a blast furnace into a torpedo in which the iron has a treating agent introduced to it while the iron is electromagnetically stirred lengthwise in the torpedo to uniformly distribute the agent throughout the iron while reducing the... | 07/26/1983 |
| 4298376 | Method for treating molten steel and apparatus therefor A method for treating molten steel utilizing an induction coil, a ladle, a treating vessel and at least one passage pipe interconnecting the ladle and the treating vessel which includes the steps of lifting up a part of the molten steel from the ladle to ... | 11/03/1981 |
| 4162156 | Process for melting cast iron borings Process for melting cast iron borings comprising continuously charging dried borings into a coreless induction furnace operated within controlled metal levels to achieve adequate stirring of the molten metal in the furnace, drawing incoming borings beneat... | 07/24/1979 |
| 4116678 | Method of producing iron In a method of producing iron by direct reduction of the ore, compaction into agglomerates and fusion, where the ore is reduced by a gaseous process with pre-reduction to monoxide FeO at 1000° C, followed by a final reduction at 700°C. The resultant pow... | 09/26/1978 |
| 4099960 | Method of smelting metallic material, particularly iron sponge Methods and apparatus are provided for the enhanced production of iron sponge in an induction crucible furnace by reversing the usual flow pattern produced. Upwardly flowing magnetic fields are induced at the furnace walls, causing an upwarding flow of th... | 07/11/1978 |
| 4083715 | Smelting plant and method Iron-containing materials are loaded into the top of a shaft furnace to form therein an upright column of the materials. A burner forms a flame above the floor of the furnace to heat the base of the column and thereby melt the materials at the base of the... | 04/11/1978 |
| 4080195 | Melt reduction of iron ore A method for reducing finely divided iron ore supplied to a ferrous melt, comprises inductively heating part of the melt at a heating rate higher than any heating of the balance of the melt so as to form in the melt an electrically heated part of the melt... | 03/21/1978 |
| 4049437 | Process of separation, particularly of a solid phase, from a matrix in liquid phase Process of production of a separate phase, especially a solid phase of modified composition, from a matrix in liquid phase. Starting at a temperature at which the matrix is entirely molten, it is subjected to the action of an electromagnetic field, with such a... | 09/20/1977 |
| 3985544 | Method for simultaneous combined production of electrical energy and crude iron The invention relates to a method of combined production of electrical energy and crude iron, comprising reducing iron oxides while keeping the temperature below the melting point of the crude iron during a pre-reduction and above said melting point durin... | 10/12/1976 |
