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| Number | Title | Issue Date |
| 7101442 | Reaction apparatus A reaction apparatus including: a main body having a reaction chamber with an upper opening thereof, a lid hinge, and a lid combined to the lid hinge, rotationally opening and closing the upper opening; a lifting member having a first end part separated from a rotat... | 09/05/2006 |
| 6523598 | Vacuum induction melting system The vacuum induction melting system is designed to be operated in a continuous or semi-continuous manner for extended periods of time for increased efficiency, and makes it possible to easily and quickly remove the induction furnace from the melt chamber ... | 02/25/2003 |
| 6468467 | Method and apparatus for vacuum decarburization refining of molten steel In a straight barrel type vacuum refining apparatus, use is made of a combination of: a decarburization method wherein the flow rate of oxygen fed into a vacuum tank and the flow rate of an inert gas fed into the vacuum tank are regulated and, at the same... | 10/22/2002 |
| 6360810 | Vacuum induction melting system A vacuum induction melting system includes a melt chamber which forms an airtight enclosure, with an induction furnace located within the melt chamber. A mold tunnel is connected to the melt chamber adjacent its lower end, with the mold tunnel including a... | 03/26/2002 |
| 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 |
| 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 |
| 5894009 | Vacuum tight reaction vessel for steel processing with a packing gland A vacuum tight reaction vessel for steel processing has a vessel bottom and a cover that can be placed vacuum-tightly on the vessel bottom. The cover has a packing gland as a vacuum-tight passage. The packing gland includes a packing gland housing fixedly... | 04/13/1999 |
| 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 |
| 5603749 | Apparatus and method for vacuum treating molten steel An apparatus for vacuum treating molten steel includes a ladle having a sidewall, a substantially circular closed bottom, and an open top. A first gas injector is operably associated with the bottom for introducing a supply of a selected first gas into th... | 02/18/1997 |
| 4819918 | Apparatus for the protection of a liquid against the effects of oxygen from the surroundings The subject matter of the invention is constituted by a method and an apptus for the protection of a liquid in a container against the effects of atmospheric oxygen by the use of a fluid, which is placed as a barrier layer between the liquid to be protec... | 04/11/1989 |
| 4780134 | Simplified method and apparatus for treating molten steel A method and apparatus for post-melting treatment of molten steel in which a container of molten steel is subjected to a sub-atmospheric pressure generated by air ejector means and, simultaneously, to an inert gas purge. A higher inert gas purge rate is u... | 10/25/1988 |
| 4612043 | Steel making method A method of making steel having low levels of carbon, nitrogen, phosphorous and oxygen comprises the steps of vacuum reladling a ladle of low phosphorous steel for reducing carbon levels and separating the metal from a highly oxidizing slag, blowing oxyge... | 09/16/1986 |
| 4456479 | Vacuum purification of liquid metals Molten metals having a low vapor pressure, such as aluminum, are vacuum refined to remove metallic impurities employing a lifting gas to form a metal fall above a liquid metal surface; a vacuum above the metal surface is effective in conjunction with the ... | 06/26/1984 |
| 4328958 | Apparatus for stirring molten metal in container An apparatus comprises a refractory-lined pipe (5) with a removable cover (6) formed with an opening provided to communicate the interior of the pipe (5) with a compressed gas supply system (8) and a vacuum system (9). This pipe (5) is arranged in a stepp... | 05/11/1982 |
| 4253645 | Molten steel droplet scatter regulation cylinder In a molten steel droplet scatter regulation cylinder for use in a vacuum steel casting system, for the object of prevention of growth of molten steel droplets into a solid steel block at the lower end portion of the cylinder to subsequently drop into the... | 03/03/1981 |
| 4245823 | Apparatus for producing mechanically-worked vapor-deposited bulk alloys The porosity of bulk alloys produced by deposition of the components of the alloy from the vapor phase can be reduced if the surface of the alloy is mechanically worked, preferably by a peening action, during the course of the deposition. Suitable apparat... | 01/20/1981 |
| 4094495 | Method and apparatus for the production of quality steels A method for producing steels within a very close analysis tolerance in which the raw materials are melted down in a first vessel, the melt is then tapped into a second vessel in which deslagging is accomplished, and thereafter the melt is subjected to tr... | 06/13/1978 |
| 3948495 | Apparatus for continuous vacuum-refining of metals The present invention relates to apparatus for continuous purifying of tin from impurities -- lead and bismuth, by refining. The apparatus comprises a vacuum chamber accommodating a range of trays arranged in succession and fitted each with an overflow conduit... | 04/06/1976 |
