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| Number | Title | Issue Date |
| 8137612 | Apparatus for continuously manufacturing stoichiometric MgNi hydrogen storage compound The present invention provides an apparatus for manufacturing stoichiometric Mg2Ni compound applicable to industry and capable of manufacturing continuously. The apparatus mainly comprises: a vacuum chamber, comprising a material feeding tube; a first crucible, set ... | 03/20/2012 |
| 7829011 | Metal powder production system and method A metal powder production system includes a vacuum chamber having a vacuum chamber interior, a stock feed mechanism communicating with the vacuum chamber interior, a radiation source provided in the vacuum chamber interior, a cooling chamber having a cooling chamber... | 11/09/2010 |
| 7279127 | Continuous steelmaking plant The present invention provides a process plant for the production of molten steel from primary and/or secondary ferrous materials in which no free oxygen is permitted to contact directly carbon-containing iron melts, comprising:—i) at least three pairs of furnaces... | 10/09/2007 |
| 7121320 | Method for shaping semisolid metals A method of shaping a semisolid metal comprising pouring a molten aluminum or magnesium alloy which contains a crystal grain refiner and which is superheated to less than 50° C. above a liquidus temperature of aluminum or magnesium, directly into a vessel without u... | 10/17/2006 |
| 6994147 | Semi-solid metal casting process of hypereutectic aluminum alloys A method for the refining of primary silicon in hypereutectic alloys by mixing at least two hypereutectic alloys into a solid/semi-solid hypereutectic slurry is described. The method provides control of the morphology, size, and distribution of primary Si in a hyper... | 02/07/2006 |
| 6994117 | Piping elbow liners Liners useful as piping elbow liners comprising a body liner, a tangential inlet liner, and a tangential outlet liner. The tangential inlet liner and the tangential outlet liner can be removably inserted into a cavity in the body liner. The body liner can comprise t... | 02/07/2006 |
| 6944930 | Method for manufacturing low-oxygen copper A method for manufacturing a low-oxygen copper wire is provided, in which a dehydrogenating treatment can be performed without requiring a long moving distance of molten copper, and the generation of holes in solidification is suppressed, whereby high quality low-ox... | 09/20/2005 |
| 6932852 | Method and apparatus for enhanced purification of high-purity metals A 99.99% pure indium feed is charged into a crucible and heated to 1250 ° C. by an upper heater in a vacuum atmosphere at 1×10−4 Torr, whereupon indium evaporates, condenses on the inner surfaces of an inner tube and drips to be recovered into a liqui... | 08/23/2005 |
| 6843826 | Vacuum treatment of molten metal with simultaneous stirring by helium injection A vacuum treatment of cast metal in liquid form employing the steps of: introducing the cast metal in liquid form into a metallurgic ladle; filling the ladle until a guard height ranging between 0.4 and 0.6 m is reached; and treating the metal while bringing the atm... | 01/18/2005 |
| 6838045 | Apparatus for metal purification A purification apparatus including a vertical stack of a feed heating zone having a feed crucible 1, a condensation zone having a plurality of condensation vapor passage plates 5, a solidification zone having a solidification crucible 2 and an e... | 01/04/2005 |
| 6805833 | Apparatus for enhanced purification of high-purity metals A 99.99% pure indium feed is charged into crucible 8 and heated to 1250° C. by upper heater 6 in a vacuum atmosphere at 1×10−4 Torr, whereupon indium evaporates, condenses on the inner surfaces of inner tube 3 and drips to be reco... | 10/19/2004 |
| 6666902 | Ladle refining apparatus and ladle refining method using it The present invention provides a lade refining apparatus capable of suppressing skull deposition in a vacuum/decompression chamber and performing molten steel agitation, slag reforming and degassing efficiently, and a ladle refining method using the appar... | 12/23/2003 |
| 6638471 | Water cooled vessel for vacuum processing liquid steel The invention relates to a process vessel for vacuum processing liquid steel, comprising a lower part, a middle part and an upper part, and submersible pipes located on the lower part, whereby the process vessel is provided with a heating apparatus, a fee... | 10/28/2003 |
| 6607578 | Continuous vacuum refining method of molten metal and apparatus thereof A continuous vacuum refining method of molten metals, wherein impurities in the molten metal are eliminated by evaporation by stirring the molten metal (1) in the molten liquid stirring part B in the evacuated and pre-heated vacuum chamber, the molten liq... | 08/19/2003 |
| 6537485 | Metal melting apparatus A melting apparatus having a compact structure, of economical equipment cost, enabling to vacuum melting and refining at high productivity. A metal melting apparatus has a structure in which a refractory furnace wall 12 is furnished on an outer circumfere... | 03/25/2003 |
| 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 |
| 6444164 | Apparatus for producing high-purity silver materials An apparatus for producing a high-purity silver material. The apparatus includes an electric furnace. The electric furnace has an outer cylinder which encloses an inner cylinder. The outer cylinder is capable of being evacuated with a vacuum pump. A recov... | 09/03/2002 |
| 6375893 | Method and apparatus for evaporating components of multiple substance mixtures and multiple substance systems For the evaporation of given components from initial multiple-substance mixtures and systems at subatmospheric pressure, individual portions (P1, P2, P3, P4, P5) of the multiple-substance mixture and systems are placed in ring crucibles (17) stacked at se... | 04/23/2002 |
| 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 |
| 6235084 | Method for decarburizing steels melts The invention relates to a process for decarburizing a steel melt in a closed metallurgical vessel that is connected to a vacuum unit which includes reducing pressure in the vessel to below 100 mbar, introducing replenishment oxygen to implement the remov... | 05/22/2001 |
| 6210628 | Melt delivery system Melt delivery system and method including a first melting chamber and a laterally adjacent second melt pour chamber arranged side-by-side to one another with a suitable isolation valve therebetween. A melting/melt delivery system is includes a transport m... | 04/03/2001 |
| 6162387 | Vacuum refining furnace A refining furnace used for vacuum refining has a sealing cover mounted on the refining furnace so as to cover the furnace throat of the refining furnace and to be in close contact with a sealing flange (10) formed on the refining furnace. The adhesion of... | 12/19/2000 |
| 6042633 | Process for post-combustion of reaction gases produced during the vacuum processing of steel A method for after combustion of reaction gases resulting from the decarburization of liquid steel in reaction vessels under vacuum includes the steps of arranging a blow-in opening within a refractory lining of a reaction vessel and introducing an air st... | 03/28/2000 |
| 5972282 | Straight hearth furnace for titanium refining A cold hearth furnace for refining of selected metals, such as titanium, is described. The furnace includes a melting hearth and a transport hearth arranged linearly. A pair of barriers partially block the flow of molten materials to mix it, allowing impu... | 10/26/1999 |
| 5922273 | Modular hearth arrangement for cold hearth refining In the particular embodiment described in the specification, a cold hearth arrangement has a hearth plate forming a floor above the bottom of a melt chamber enclosure and a hearth is removably mounted on the hearth plate. Coolant supply and return lines a... | 07/13/1999 |
| 5917115 | Apparatus for and method of treating liquid metal A method of and apparatus for degassing molten metal in a vacuum treatment chamber defined by a open topped ladle containing the molten metal and a generally cylindrical refractory lined cover having a closed top and an open bottom positioned on the ladle... | 06/29/1999 |
| 5911946 | Snorkel for a degassing vessel The present invention pertains to a snorkel for a degassing vessel, with a refractory lining and a gas-purging device arranged therein with a plurality of channels, which, distributed over the circumference of the snorkel, extend through the refractory li... | 06/15/1999 |
| 5753004 | Method for refining molten metal and apparatus for same A method of refining molten metal includes the steps of reduced-pressure-refining molten metal in a heated vessel, adding slag-forming agents into the refined molten metal while keeping the molten metal in the vessel, or after pouring the molten metal int... | 05/19/1998 |
| 5733500 | Molten metal degassing and filtering apparatus Molten metal (e.g., on its way to a continuous casting machine for forming a bar that will be rolled into a rod to be drawn down to wire) is filtered to remove particulate impurities by passing it through at least one and preferably several ceramic filter... | 03/31/1998 |
| 5634514 | Kiln for firing and or casting prosthodontic products The firing and/or casting kiln has a containment casing which internally forms a treatment chamber, a part holder which is movably mounted inside the treatment chamber, an opening for access to the treatment chamber, and a conditioning system for producin... | 06/03/1997 |
| 5618490 | Vacuum installation, in particular for recycling metallurgy A vacuum plant, in particular for secondary metallurgy, having at least one ejector which is in communication with a closed container within which a metallurgical vessel which is to be placed under pressure can be brought. A second ejector is connected in... | 04/08/1997 |
| 5562149 | Vacuum casting apparatus A casting conduit (5) is attached at a low-level location to a completely sealable furnace (1) for a casting material (2). At this connection, the furnace is provided with an outlet opening (4) which is capable of being closed by a shutter (3). The castin... | 10/08/1996 |
| 5531425 | Apparatus for continuously preparing castable metal matrix composite material A method and apparatus for preparing a continuous flow of castable composite materials of nonmetallic particles in a metallic matrix, wherein particles are mixed into a molten metallic alloy to wet the molten metal to the particles, and the particles and ... | 07/02/1996 |
| 5496017 | Kiln for firing and/or casting prosthodontic products The firing and/or casting kiln has a containment casing which internally forms a treatment chamber, a part holder which is movably mounted inside the treatment chamber, an opening for access to the treatment chamber, and a conditioning system for producin... | 03/05/1996 |
| 5476248 | Apparatus for producing high-purity metallic chromium There is proposed a novel method for manufacturing high-purity metallic chromium that can eliminate the problems of reduced heating capability of the furnace, contamination of produced metallic chromium and other disadvantages related to the operation of ... | 12/19/1995 |
| 5415680 | Molten metal vacuum treatment and apparatus Disclosed is a method and apparatus of treating molten metal for reducing the amount of gaseous or volatile material contained therein. The method comprises providing a body of molten metal and contacting the molten metal with a porous member having a por... | 05/16/1995 |
| 5403381 | Molten metal conveying means and method of conveying molten metal from one place to another in a metal-melting furnace with simultaneous degassing of the melt A method, for the conveyance of molten metal from one place to another, in a high-temperature molten metal pool in a metal-melting furnace or out of said molten metal pool, employing an at least partially-inclined elongated conveying conduit and gas feed ... | 04/04/1995 |
| 5395094 | Means of conveying molten metal from one place to another in a metal-melting furnace with simultaneous alloying of the melt A method, for the conveyance of molten metal from one place to another, in a high-temperature molten metal pool in a metal-melting furnace or out of said molten metal pool, employing an at least partially-inclined elongated conveying conduit and gas feed ... | 03/07/1995 |
| 5395424 | Molten metal conveying means and method of conveying molten metal from one place to another in a metal-melting furnace using intermittent or pulsating insert gas feed A method, for the conveyance of molten metal from one place to another, in a high-temperature molten metal pool in a metal-melting furnace or out of said molten metal pool, employing an at least partially-inclined elongated conveying conduit and gas feed ... | 03/07/1995 |
| 5346185 | Vacuum-suction degassing apparatus A melt is stored in a vessel, and a lower half portion of a rod-formed porous member is immersed in the melt. The porous member is made of a porous material having pores which is permeable to gas and impermeable to melts, such as molten metal, molten slag... | 09/13/1994 |
