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| Number | Title | Issue Date |
| 6918942 | Process for production of titanium alloy Titanium-aluminum alloy is prepared as a master alloy, and the aluminum master alloy and a pure titanium material are melted by an electron beam to yield titanium alloy. ... | 07/19/2005 |
| 6733561 | Production of high titania slag from ilmenite A process is provided for the production of titania rich slag from ilmenite. The ilmenite is fed together with carbonaceous reductant, and in the absence of fluxes, to the molten bath of a D.C. arc furnace. The molten bath of the furnace forms the anode and one or m... | 05/11/2004 |
| 6349107 | Method of magnetically-controllable, electroslag melting of titanium and titanium-based alloys, and apparatus for carrying out same A method of magnetically-controllable, electroslag melting of titanium and titanium-based alloys is provided that includes the effect of an external radial magnetic field on the metallurgical melt. The field forms at least two adjoining melting layers whi... | 02/19/2002 |
| 6113666 | Method of magnetically-controllable, electroslag melting of titanium and titanium-based alloys, and apparatus for carrying out same A method of magnetically-controllable, electroslag melting of titanium and titanium-based alloys is provided that includes the effect of an external radial magnetic field on the metallurgical melt. The field forms at least two adjoining melting layers whi... | 09/05/2000 |
| 5772724 | High purity titanium production process The present invention provides a method for producing high-purity titanium from titanium sponge obtained by the Kroll process in which a core of the cylindrical lump of titanium sponge obtained with a weight less than 20-30% of that of the cylindrical lum... | 06/30/1998 |
| 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 |
| 5584909 | Controlled foamy slag process A method of improving the post-combustion heat recovery in a basic oxygen furnace by controllably forming a foamy slag. The foamy slag is generated by increasing the lance height and reducing the rate of lance height reduction during the oxygen blowing cy... | 12/17/1996 |
| 5584906 | Highly purified titanium material, method for preparation of it and sputtering target using it The crude Ti particles prepared by molten salt electrolysis or Iodide method are classified into each particle diameter according to contents of impurities, and the crude Ti particles having a desired particle diameter are selected from the crude Ti parti... | 12/17/1996 |
| 5460701 | Method of making nanostructured materials A method and system for synthesizing nanocrystalline material. A system includes a chamber, a nonconsumable cathode shielded against chemical reaction by a working gas not including an oxidizing gas, but including an inert gas, a consumable anode vaporiza... | 10/24/1995 |
| 5317591 | Direct-current arc furnace In a direct-current arc furnace having a bottom contact (3) which has a large area, electromagnetically produced bath agitations are influenced by an electromagnet (9) disposed underneath the vessel bottom (4) such that the natural flow in the melt bath, ... | 05/31/1994 |
| 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 |
| 5139585 | Structural member made of titanium alloy having embedded beta phase of different densities and hard metals A structural member made of titanium or titanium alloy has a metal structure at its surface layer portion formed of a plurality of kinds of ଲ-phases of different characteristics which are present in combination.... | 08/18/1992 |
| 5124122 | Titanium alloy containing prealloyed vanadium and chromium alloy High strength titanium alloys containing about 45-55% by weight of titanium, about 25-45% by weight of vanadium and 10-20% by weight chromium alloys are disclosed. These latter two components are first alloyed into a master alloy before addition to the ti... | 06/23/1992 |
| 5021084 | Process for improving high-temperature alloys This invention is the electron beam evaporation and deposition(EBED) process which produces high purity and ultrafine grain size in high-temperature and reactive metal alloys. These properties are important in metals used in aircraft gas turbine component... | 06/04/1991 |
| 4985067 | Process and device for implementing hot chemical processes Method for melting or melt reducing chemical mixtures at temperatures which exceed the melting temperatures of highly-refractory linings. The method requires the steps of pressing the chemical mixture into bars and arranging the bars to form a cavern havi... | 01/15/1991 |
| 4952236 | Method of making high strength, low modulus, ductile, biocompatible titanium alloy Method for preparing a high strength, low modulus, ductile, biocompatible titanium base alloy containing one or more isomorphous beta stabilizers, eutectoid beta stabilizers and optional alpha stabilizers, characterized by a modulus of elasticity not exce... | 08/28/1990 |
| 4856576 | Zirconium-containing coating composition A paint or coating composition which contains only pure Ziroconium containing compounds, and a small amount of NH4 (OH)2 and acid is applied to the vertical walls of a vacuum arc furnace Copper crucible to form a stable, substantiall... | 08/15/1989 |
| 4849016 | Combined ultra slow electron beam and vacuum arc melting for barrier tube shell material This is a process for making a very pure and very homogeneous zirconium material for use in lining the interior of zirconium alloy fuel element cladding. The improvement utilizes the forming of consumable feed material from generally virgin sponge materia... | 07/18/1989 |
| 4849013 | Combined electron beam and vacuum arc melting for barrier tube shell material This is a process for making a very pure and very homogeneous material for use in lining the interior of zirconium alloy fuel element cladding. The improvement utilizes the forming of a consumable electrode from generally virgin sponge material, melting t... | 07/18/1989 |
| 4844746 | Method of producing a tantalum stock material of high ductility A method is described for the production of a ductile tantalum stock material for high-speed deformation use. A bar-shaped body is made from directly reduced tantalum powder of a given purity and is remelted repeatedly as a consumable electrode in an elec... | 07/04/1989 |
| 4764209 | Method for manufacturing alloy A method for manufacturing alloy comprising: allowing a consumable electrode consisting a single metal element to form a pair of electrodes which have the same element, to set plurality of the pair so that an electrode metal element of each of the plurali... | 08/16/1988 |
| 4728364 | Electrode for the production of titanium articles that are free from low density inclusions The production of titanium articles that are free from low-density inclusions by the use of titanium sponge particles for melting which particles have substantially a maximum particle size of -6 mesh and finer, preferably -8 mesh and finer.... | 03/01/1988 |
| 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 |
| 4678506 | Production of titanium articles that are free from low density inclusions The production of titanium articles that are free from low-density inclusions by the use of titanium sponge particles for melting which particles have substantially a maximum particle size of -6 mesh and finer, preferably -8 mesh and finer.... | 07/07/1987 |
| 4585474 | Method of and prealloy for the production of titanium alloys A masteralloy of the following composition: 10 to 12% by weight tin, 21 to 23% by weight zirconium, 32 to 34% by weight molybdenum, less than 0.5% by weight unavoidable impurities and balance aluminum is produced and utilized as a melting electrode in the vacuum-el... | 04/29/1986 |
| 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 |
| 4129438 | Method of adding trace elements to base metals A method of adding trace elements to a base metal, particularly useful for adding yttrium or a rare earth metal to titanium. This method is especially useful for adding these and other trace elements which have low solubility in the base metal or a high m... | 12/12/1978 |
| 4108644 | Manufacture of reactive metals and alloys Method for manufacturing reactive metal alloys using revert raw materials as a principal raw material source.... | 08/22/1978 |
| 4007770 | Semi-consumable electrode vacuum arc melting process for producing binary alloys A process for producing homogeneous binary alloys comprised of a first element present in a major amount having a melting point below the liquidus of the binary alloy and a second element present in a minor amount having a melting point above the liquidus... | 02/15/1977 |
| 3989091 | Method for electroslag remelting of titanium or its alloys and a device for effecting same A method of electroslag remelting of titanium or its alloys in a mould having a protective atmosphere from inactive gases supplied to the surface of the slag bath and the electrode, as well as into the melt and onto the ingot at the point where it comes o... | 11/02/1976 |
| 3948637 | Process for class IV-B metals ore reduction Ores containing oxides of Titanium, Zirconium and Hafnium metals are reduced by mixing them in the powdered state with a base hydroxide of one of the Classes I-A or II-A metals of the periodic table of elements and either sugar or starch, mixing them well... | 04/06/1976 |
| 3933474 | Leech alloying Alloys are produced from an elongated metal bar comprising a substantially pure majority metal by attaching a length series of surface patches thereto made of compacted powder mixtures of minority alloying elements and the majority metal, then progressive... | 01/20/1976 |
