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| Number | Title | Issue Date |
| 8043401 | Method for the reduction of a slag having a high degree of chromium in an electric arc furnace During the production of stainless steel, a slag is formed during the melting of the solid material in the electric arc furnace, the slag having a high degree of metal oxides, particularly chromium oxide. The chromium concentration often reaches values of more than ... | 10/25/2011 |
| 7316057 | Method of manufacturing a rotating apparatus disk A method (20) of fabricating a large component such as a gas turbine or compressor disk (32) from segregation-prone materials such as Alloy 706 or Alloy 718 when the size of the ingot required is larger than the size that can be predictably formed with... | 01/08/2008 |
| 7243701 | Treating molten metals by moving electric arc An apparatus (10) and a method for reducing inclusions, shrinkage blowholes, porosity and segregation in metal castings during the casting process, and for improving the grain structure, mechanical properties and yield of ingots and other castings. The appara... | 07/17/2007 |
| 6558446 | In situ electroslag refining hot start An electroslag refining apparatus includes upper and lower integral crucibles, with the lower crucible having a drain. In situ hot start is effected by depositing in the lower crucible a pre-refined starter. The starter is melted in the lower crucible to ... | 05/06/2003 |
| 6496529 | Refining and casting apparatus and method A method for refining and casting metals and metal alloys includes melting and refining a metallic material and then casting the refined molten material by a nucleated casting technique. The refined molten material is provided to the atomizing nozzle of t... | 12/17/2002 |
| 6375702 | Consumable electrode electroslag refining feed systems and methods A consumable electrode feed system for a refining system provides consumable electrodes to a refining system. The consumable electrode feed system comprises a side feed device that feeds consumable electrodes to a refining system in a first direction; a r... | 04/23/2002 |
| 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 |
| 6350293 | Bottom pour electroslag refining systems and methods A bottom pour electroslag refining system refines raw material into refined liquid metal. The bottom pour electroslag refining system comprises an electroslag refining crucible; a slag; a bottom pour structure that comprises an orifice from which refined ... | 02/26/2002 |
| 6289258 | Drain flowrate measurement The flowrate of a stream discharged from a drain in a vessel is measured by imaging the stream, measuring a diameter of the stream image, and calculating the flowrate based on the measured diameter. A video camera may be aimed below the drain for imaging ... | 09/11/2001 |
| 6264717 | Clean melt nucleated cast article An article that comprises a fine-grain, homogeneous microstructure is essentially oxide- and sulfide-free and segregation defect free. The article is produced by a process that comprises forming a source of clean refined metal that has oxides and sulfides... | 07/24/2001 |
| 6219372 | Guide tube structure for flux concentration A guide tube structure for flux concentration is provided. The discharge guide tube comprises a central orifice that extends from a source of metal to an outlet in the discharge guide tube for directing a stream of melt therethrough; a structure that gene... | 04/17/2001 |
| 6196427 | Systems for controlling the superheat of the metal exiting the CIG apparatus in an electroslag refining process Systems for controlling the superheat of the stream of molten metal from an electroslag refining apparatus is taught. The systems include the introduction of unrefined metal into an electroslag refining process apparatus in which the unrefined metal is fi... | 03/06/2001 |
| 6104742 | Electroslag apparatus and guide A melt guide is provided for enclosing a bottom of an electroslag refining crucible containing a melt of electroslag refined metal. The guide includes an upper plate sized to engage the crucible bottom for attachment thereto, and includes an upper orifice... | 08/15/2000 |
| 6019811 | Metals processing control by counting molten metal droplets Apparatus and method for controlling metals processing (e.g., ESR) by melting a metal ingot and counting molten metal droplets during melting. An approximate amount of metal in each droplet is determined, and a melt rate is computed therefrom. Impedance o... | 02/01/2000 |
| 5992503 | Systems and methods for maintaining effective insulation between copper segments during electroslag refining process Systems and methods of electroslag refining of metal include the introduction of unrefined metal into an electroslag refining process in which the unrefined metal is first melted at the upper surface of the refining slag. The molten metal is refined as it... | 11/30/1999 |
| 5985206 | Electroslag refining starter An electroslag refining starter includes a refined disk fixedly joined in a central aperture of a mounting ring. The mounting ring supports the starter in a crucible below an ingot being electroslag refined. The disk is consumed during starting and is rep... | 11/16/1999 |
| 5810066 | Systems and methods for controlling the dimensions of a cold finger apparatus in electroslag refining process A system and method of electroslag refining of metal is taught. The system and method includes the introduction of unrefined metal into an electroslag refining process in which the unrefined metal is first melted at the upper surface of the refining slag.... | 09/22/1998 |
| 5809057 | Electroslag apparatus and guide A melt guide is provided for enclosing a bottom of an electroslag refining crucible containing a melt of electroslag refined metal. A base plate is sized to have a perimeter to engage the crucible bottom for attachment thereto. The base plate includes an ... | 09/15/1998 |
| 5799721 | Method of remelting metals to form an elongate portion and apparatus therefor For the continuous remelting of metals--in particular steels and Ni-- Co-base alloys--in a short, downwardly open water-cooled chill mold (20) for producing an elongate casting portion (26) the latter is produced either by continuous or stepwise withdrawa... | 09/01/1998 |
| 5769151 | Methods for controlling the superheat of the metal exiting the CIG apparatus in an electroslag refining process Methods for controlling the superheat of the stream of molten metal from an electroslag refining apparatus is taught. The methods include the introduction of unrefined metal into an electroslag refining process apparatus in which the unrefined metal is fi... | 06/23/1998 |
| 5700308 | Method for enhancing reaction rates in metals refining extraction, and recycling operations involving melts containing ionic species such as slags, mattes, fluxes A method and apparatus for enhancing reaction rates between ionic species such as slags, mattes, fluxes and the like with at least another component such as similar melts, metals, chemical compounds, gases or any combination thereof during metal processin... | 12/23/1997 |
| 5649992 | Methods for flow control in electroslag refining process A method of electroslag refining of metal is taught. The method includes the introduction of unrefined metal into an electroslag refining process in which the unrefined metal is first melted at the upper surface of the refining slag. The molten metal is r... | 07/22/1997 |
| 5649993 | Methods of recycling oversray powder during spray forming A method for the recycling of overspray powder during spray forming is provided. The method involves providing a refining vessel to contain an electroslag refining layer floating on a layer of molten refined metal. An ingot of unrefined metal is lowered i... | 07/22/1997 |
| 5348566 | Method and apparatus for flow control in electroslag refining process A method of electroslag refining of metal is taught. The method starts with the introduction of unrefined metal into an electroslag refining process in which the unrefined metal is first melted at the upper surface of the refining slag. The molten metal i... | 09/20/1994 |
| 5234486 | Method for remelting reactive metals For the remelting of titanium or zirconium, the electroslag remelting method is used. To prevent any reaction of the melt with oxygen or nitrogen, the remelting is performed in an inert gas atmosphere. Fluorspar with an addition of calcium oxide is used a... | 08/10/1993 |
| 5160532 | Direct processing of electroslag refined metal A method for the electroslag refining of metal is provided. The method involves providing a refining vessel to contain an electroslag refining layer floating on a layer of molten refined metal. An ingot of unrefined metal is lowered into the vessel into c... | 11/03/1992 |
| 4993690 | Electroslag remelting plant including an ingot mold and a hood An electroslag remelting plant includes an ingot mold 4 for forming a block from remolten material, at least one consumable electrode 26, a body having at least one vertically driven electrode rod 20 for the advance of the consumable electrode and a hood ... | 02/19/1991 |
| 4953177 | Method and means of reducing the oxidization of reactive elements in an electroslag remelting operation A method and apparatus is provided for controlling the atmosphere above the bath of an electroslag remelting furnace, including sealing the atmosphere of the furnace directly above the crucible by employing a shell secured to the crucible and a shroud sec... | 08/28/1990 |
| 4919712 | Method and apparatus for adjusting electrode isotherms within electro-slag remelting A process and apparatus for electro-slag remelting including a cooling medium directed towards the electrode surface adjacent its entry into the slag layer. The cooling medium retards the melting of the electrode periphery within the slage so as to form a... | 04/24/1990 |
| 4726840 | Method for the electroslag refining of metals, especially those having alloy components with an affinity for oxygen Method for the electroslag refining of metals of which at least 50 weight-percent are in the form of at least one current-carrying consumable electrode, especially one having alloy components with an affinity for oxygen, wherein the metals are remelted to... | 02/23/1988 |
| 4483708 | Method and apparatus for regulating the melting rate of an electrode during electroslag remelting A method of regulating the melting rate of a self-consumable electrode during electroslag remelting in a slag bath, wherein the lowering speed of the electrode which is to be remelted, the length of which is determined, is regulated in consideration of ma... | 11/20/1984 |
| 4359337 | Process for the manufacture of basic slags for the electroslag remelting process The invention relates to a process for the manufacture of basic slags for the electroslag remelting process, with the oxidic components corresponding to the desired composition, which may have a fluoridic content of not more than 5% by weight, and the flu... | 11/16/1982 |
| 4279642 | Method for electroslag remelting of metals In melting down at least one consumable electrode in an electroslag remelting furnace, a gas is blown into the molten slag in such a manner that the gas flows in a jet towards the consumable electrode portion immersed into the slag to create a slag flow a... | 07/21/1981 |
| 4177058 | Method for producing a non-split metal workpiece formed as a cast hollow billet with a bottom part Premelted slag and metal of a specified composition are poured into a recacle. Thereafter, electroslag remelting of consumable electrodes is carried out in a slag pool formed in the receptacle. As the poured-in metal and remelted metal solidify, a non-sp... | 12/04/1979 |
| 4150971 | Start-up method for an electroslag remelting system A method for start-up and an electroslag remelting furnace system having a bottom pouring device connected to a mold in which at least one electrode is remelted to form an ingot. The bottom pouring device is positioned to receive molten slag and pass it t... | 04/24/1979 |
| 4132545 | Method of electroslag remelting processes using a preheated electrode shield The present invention relates to a method for effecting electroslag remelting processes. While effecting an electroslag remelting process by the proposed method an electrode is dipped into a slag bath. Electric current is passed through the electrode and ... | 01/02/1979 |
| 4120695 | Process of the electroslag remelting of consumable electrodes A process of simultaneous electroslag remelting several consumable electrodes fastened in a common electrode holder which contemplates feeding a flow of cooled gas to a lateral face of the electrode immersed inadequately in a slag bath, i.e. fused off to ... | 10/17/1978 |
| 4073640 | Method of melting slag Slag which is not electrically conductive when solid or at least at temperatures below 1500° F. is melted by providing a graphite covering on top of the solid slag, contacting the covering material with at least two electrodes in spaced apart relationshi... | 02/14/1978 |
| 4061493 | Method for removing undesired elements, particularly H2 and O2, in electroslag remelting and an arrangement for carrying out the method An electroslag remelting or refining method and arrangement for removing undesired elements, particularly H2 and O2, from metals. A water-cooled mold having a bottom plate is adapted to being raised in known manner. A growing metal i... | 12/06/1977 |
| 4047555 | Method of and apparatus for positioning consumable electrodes in an electroslag remelting bath Consumable electrodes are transferred to and from an operative position in an underlying melting bath by means of a pair of lifts that are vertically movable on masts located on opposite sides of the mold axis. One of the lifts has a fixed portion extendi... | 09/13/1977 |
