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Hiroyuki Otsuka, Tokyo JP

Hiroyuki Otsuka, Tokyo JP

Patent application numberDescriptionPublished
20090126895MOLTEN METAL FEED NOZZLE - A nozzle end is provided with an extension 05-21-2009
20090255644TWIN ROLL CASTER - A twin roll caster including chilled rolls, side weirs, and a molten-metal delivery nozzle. Baffles, contiguous with bottoms of end faces of the nozzle, project in a casting pool toward the side weirs to suppress stream of the molten metal into a nip between the rolls. Thus, hot molten metal just after poured into the pool does not instantly reach the nip along the side weirs, and molten metal decreases in temperature with lapse of time after the pouring streams into the nip as the rolls are rotated. As a result, belated formation of solidified shells at and adjacent to outer circumferential edges of the chilled rolls is eliminated. Thus, a strip delivered from the nip between the rolls has no reduced thickness at regions adjacent to lateral edges of the strip and has uniform thickness throughout the width of the strip.10-15-2009
20100101752OPERATING METHOD FOR TWIN-ROLL CASTING MACHINE, AND SIDE WEIR SUPPORTING DEVICE - Intended is to acquire a strip with less thickness even if arcuate wear steps are formed on side weirs.04-29-2010
20100108284CASTING ROLL - Intended is to provide a casting roll having an outer periphery capable of being efficiently cooled.05-06-2010
20100163204TWIN-ROLL CASTING MACHINE - Provided is a twin-roll casting machine capable of suppressing irregularities in crosswise thickness distribution of a strip.07-01-2010
20100205765DEVICE FOR CLEANING CHILLED ROLLS - In a device for cleaning chilled rolls that can keep higher cleanliness of a brush, a brush includes a rotatable cylindrical barrel including a number of suction through-holes extending from an outer periphery to inside, the barrel extending in parallel with an axis of the roll, grouped cleaning wires implanted on the outer periphery of the barrel and forming a helical bank extending from one end to the other end of the barrel for cleaning of the roll, and a dust suction port at one end of the barrel and in communication with an inner space of the barrel, the dust suction port being connected to an exhaust mechanism.08-19-2010
20100236747Brush Roll for Casting Roll - A metal strip casting apparatus and method of casting metal strip include assembling a pair of counter-rotatable casting rolls positioned laterally forming a nip between for casting, and assembling a pair of brush rolls, each of the brush rolls associated with one of each of the casting rolls. Each brush roll includes at least one spaced apart brush line extending substantially along the axial length of the casting roll. The brush lines may form a spiral, zigzag, wave or crisscross array about the brush roll. The brush roll may include one or more staggered rings with regularly or irregularly spaced apart bristles which form the brush lines. The brush lines may be between 10 to 50 mm apart and separated by between 2 mm to 45 mm of open space. The brush lines may be one line per 10 mm to 90 mm of axial length of brush roll.09-23-2010
20110119858ROLL POLISHING APPARATUS - A roll polishing apparatus that can suppress cracks on a strip. The roll polishing apparatus includes brush rolls which face outer periphery of chilled rolls over an axial length of the chilled rolls, respectively, cylinders which urge the brush rolls wholly to the chilled rolls, respectively, and cylinders which deform the brush rolls in conformity to crowns of the chilled rolls, respectively. By these elements, wires of the brush rolls are uniformly contacted on outer peripheries of the chilled rolls to wipe off oxides adhering to the outer peripheries of the chilled rolls.05-26-2011

Patent applications by Hiroyuki Otsuka, Tokyo JP