Krosaki Harima Corporation Patent applications |
Patent application number | Title | Published |
20130087586 | TUNDISH NOZZLE EXCHANGING DEVICE, AND TUNDISH NOZZLE FOR USE IN THE DEVICE - A tundish nozzle is used in a device for exchanging tundish nozzles juxtaposed at a bottom of a tundish. The device includes a pair of first arms pressing and supporting a first lower nozzle located at an undersurface of a first upper nozzle, the first upper nozzle being placed at the bottom of the tundish. The device includes a pair of second arms pressing and supporting a second lower nozzle located at an undersurface of a second upper nozzle, the second upper nozzle being placed at the bottom of the tundish and next to the first upper nozzle. The pair of first arms and the pair of second arms are adjoined to each other, the pairs at least partly overlapping. The tundish nozzle includes a zirconia based nozzle inserted into an alumina based refractory, and is one of the first and second lower and upper nozzles. | 04-11-2013 |
20120248157 | IMMERSION NOZZLE FOR CONTINUOUS CASTING - The immersion nozzle for continuous casting, including a tubular body with a bottom, a pair of first outlets, and a pair of second outlets, wherein at least a lower section of the tubular body has a rectangular flat cross section; the two opposing first outlets are disposed in narrow sidewalls at the lower section; the pair of second outlets is disposed at the bottom; each of the first outlets is partitioned by a partitioning section formed at the first outlet into an upper outlet and a lower outlet; ridges formed between the partitioning sections respectively project into a passage from a wide inner wall of the passage; the pair of second outlets is disposed symmetrically to a central axis of the tubular body such that virtual faces extended from tilted faces of the second outlets intersect with each other in the passage. | 10-04-2012 |
20110204103 | TUNDISH NOZZLE EXCHANGING DEVICE, AND TUNDISH NOZZLE FOR USE IN THE DEVICE - A tundish nozzle exchanging device and a tundish nozzle for use in the device, reducing a distance between holes of the tundish nozzles, juxtaposed at a bottom of a tundish, compared to the conventional model. | 08-25-2011 |
20110101041 | SLIDING NOZZLE DEVICE - A sliding nozzle device automatically performs a series of operations of loading and unloading pressure between plates and opening and closing a slide frame; maintaining the pressure without additional operations; and operates at full stroke during molten steel flow control. An auxiliary plate-exchanging mechanism includes slide axes moving in the same direction as a hydraulic cylinder operates, and an arm having a proximal end placed around the slide axis. The plate-exchanging mechanism is fixed on an upside frame. A first engagement pin mounted on the proximal end of the arm is inserted in a first engagement groove in a first engagement member engaging with the slide axis, and second engagement pins mounted on bearings are inserted in second engagement grooves in the slide axes. With movement of the slide axes the engagement pins respectively move in the engagement grooves, thereby rotating the slide axes and the arm. | 05-05-2011 |
20110062193 | METHOD OF CONTROLLING SLIDING NOZZLE DEVICE AND PLATE USED THEREFOR - A method of controlling a sliding nozzle device | 03-17-2011 |
20090242592 | IMMERSION NOZZLE FOR CONTINUOUS CASTING - An immersion nozzle for continuous casting including a tubular body, the tubular body having at the upper end an inlet from which molten steel is introduced into a passage extending from the inlet downward inside the tubular body, the tubular body having a bottom and being depressed in cross section at least at a lower section, the lower section having two narrow sidewalls and two broad sidewalls, the narrow sidewalls having a pair of opposing first outlets communicating with the passage, the bottom having a pair of second outlets communicating with the passage. The lower section has ridges projecting into the passage respectively from the inner surfaces of the broad sidewalls between the pair of first outlets. The second outlets are arranged symmetrically about the axis of the tubular body such that the axes of the second outlets cross each other within the passage. | 10-01-2009 |
20090242163 | IMMERSION NOZZLE FOR CONTINUOUS CASTING - An immersion nozzle for continuous casting, including (1) a tubular body with a bottom, the tubular body having an inlet for entry of molten steel disposed at an upper end and a passage extending inside the tubular body downward from the inlet, and (2) a pair of opposing outlets disposed in a sidewall at a lower section of the tubular body so as to communicate with the passage, the nozzle comprising: a pair of opposing ridges horizontally projecting into the passage from an inner wall between the pair of outlets, the inner wall defining the passage. | 10-01-2009 |
20090233081 | ZIRCONIA-CARBON-CONTAINING REFRACTORY AND METHOD FOR PRODUCING SAME - A zirconia-carbon-containing refractory includes aggregate grains, a carbon bond formed between the aggregate grains, 80% by mass or more of a ZrO | 09-17-2009 |
20090145359 | Gas Shower Plate for Palsma Processing Apparatus - In a plasma processing apparatus for generating a plasma in a plasma generation space between a lower electrode and an upper electrode so that a processing object mounted on the lower electrode is subjected to plasma processing, a plurality of cutout portions for absorption of strain caused by thermal expansion due to rapid temperature increases in the plasma processing are formed at an equal pitch in an outer edge portion of a gas shower plate included in the upper electrode. Thus, the gas shower plate can be prevented from being damaged by occurrence of cracks in the outer edge portion of the gas shower plate or the like. | 06-11-2009 |
20090075808 | Refractory, Method for Manufacturing Refractory, and Refractory Raw Material - A carbon-containing refractory is provided, which can improve the thermal shock resistance, the abrasion resistance, and the corrosion resistance without degrading the oxidation resistance. | 03-19-2009 |