Mitsubishi Jukogyo Kabushiki Kaisha

Mitsubishi Heavy Industries Limited

Kawasaki Steel Corporation

Nippon Steel Corporation

Mitsubishi-hitachi Metals Machinery, Inc.

Mitsubishi Gas Chem. Company, Inc.

Ritsuo Hashimoto

Keiichi Yamamoto

Keiji Mizuta

Kenichi Unoki

Takashi Arai

Kanji Hayashi

Masashi Yoshikawa

Kazuo Morimoto

Chiaki Kato

Kazutoshi Yokoo

Hironori Fujioka

Kazumasa Mihara

Tsutomu Kawamizu

Hiroshi Makihara

Toshitane Matsukawa

Noriyuki Kawada

Kazuto Yamamura

Kunimasa Sasaki

Akira Kishida

Mamoru Yamada

Youichi Wakiyama

Akira Kaya

Motomi Nakashima

Katsutoshi Murayama

Tadahiro Izu

Takahiro Matsumoto

Kisaburo Tanaka

Takashi Yamane

Etsurou Hirai

Hideaki Takatani

Yoshihiko Saito

Kensuke Niwa

Keiji Tsunenari

Shoichi Hashimoto

Shinsaku Kimura

Katsuyuki Isogami

Younosuke Hoshi

Noriyuki Kawata

Mitsuo Tani

Hisayoshi Fujita

Yasuo Hukada

Jyun Sakamoto

Shinji Hirai

Jyunsou Fukumori

Harumasa Muramoto

Yasuyoshi Takeoka

Jyoji Yusa

Katsuyoshi Miyake

Tsuyoshi Tanaka

Hiroshi Izaki

A twin-drum continuous casting apparatus for casting a metal sheet () by supplying molten metal () to a pouring basin formed by a pair of cooling drums () rotating in opposite directions, and side gates (), to cool the molten metal () by contact with surfaces of the cooling drums (), thereby forming a solidified shell. The cooling drum () is formed from a drum body () having shaft portions at opposite end portions, and a drum sleeve () fitted on an outer peripheral portion of the drum body (). Also, means is provided for preventing various adverse influences due to differences in thermal expansion of constituent members of the drum body () during casting. Thus, the reliability of the apparatus is increased, and the quality of casting is improved.

Dual drum type continuous casting device and method for continuous casting

A steel plate splicing facility includes, a steel plate heating apparatus for retrieving and heating a preceding steel plate and a following steel plate, and a shear-joining apparatus for clamping a tail end portion of the preceding steel plate and a leading end portion of the following steel plate in an overlapping condition by a die and a clamp and shearing them with a punch, such that surfaces of the tail end portion and the leading end portion are newly formed and brought in contact with each other in order to them. The shear-joining apparatus joins the preceding and following steel plates at a temperature equal to or higher than 350&#xb0; C. and at a percentage clearance c/t equal to or lower than 5%, c/t being defined by c/t=D/(t+t)&#xd7;100 where D represents a distance between the punch and the die, and tand trepresent a thickness of respective steel plates.

Steel plate splicing facility utilizing shear joining

Method and apparatus for holding molten metal

A hot rolling line is constructed by a pair or a plurality of pairs of rolling rolls disposed opposingly on an upper side and on a lower side of a workpiece (1) to be rolled that is pinched in between the rollers. A descaling apparatus (5) has jet flow nozzles disposed so that two jetted flows, being liquid, gas or plasma, are opposing flows so as to collide with the surface of a strip on the upstream side of the rolling rolls and then collide with each other. The jet flow nozzles are disposed, so as to incline in a direction to face each other so that the angle of inclination is 15.degree. to 60.degree. from the horizontal direction of the strip surface.

Hot rolling mill

In a molten metal holding apparatus in which an alternating magnetic flux is generated in the horizontal direction at a lower end portion of a molten metal and the molten metal 7 is held within an upper and lower opening container 6 by an electromagnetic force, solid conductors 8 which are not strong magnetic substances are attached to inner surfaces of both side plates 6x of a portion where the alternating magnetic flux passes through of the upper and lower opening container 6. Further, an apparatus including a circuit 3 to overlay a direct current on an exciting coil 2 or an exciting device 20 to let a direct current magnetic flux act is disclosed.

Molten metal holding apparatus

A roll charged with a heat transfer medium includes a heater which is easy to replace and measures by which the temperature in the axial direction of the roll can be kept uniform during operation. A hollow portion of the roll, which can be opened to the atmosphere, is located at a central axial portion of the roll. The heater is a rod-shaped heater and extends along the central longitudinal axis of the hollow portion. Metal having a low melting point is provided between the heater and an inner peripheral surface of the hollow portion. A heat transfer medium is charged in the hollow portion at the periphery thereof. The heat transfer medium may contact a circumferential part of the heater. In addition, a spiral groove or fin may be provided on an internal surface of the hollow of the portion of the roll body that is charged with the heat transfer medium.

Roll charged with heat transfer medium

A twin drum type continuous casting apparatus is provided for continuously feeding molten metal into a cast portion defined by a pair of water cooling drums that are rotated in opposite directions to each other, thereby continuously casting a plate-like cast piece. A thin portion is formed close to an outer circumferential portion of each of opposite end portions, in a width direction, of each of the water cooling drums. A thin annular member having a hot water flow passage therein is formed in between the thin portion and a shaft with a space relative to an end face of each of the water cooling drums.

Twin drum type continuous casting apparatus and method

A wetted wall type method of humidifying gas with a liquid which is composed, or mainly composed, of water wherein the liquid flows down a heated vertical wall to form a wetted wall and gas flows along the wetted wall in contact with the liquid on the wetted wall to increase the humidity contained in the gas, comprises supplying a greater amount of liquid than the amount of liquid used or evaporated for increasing the humidity, and recirculating the liquid which is not evaporated from an outlet of the wetted wall to a liquid supply portion, the amount of the flowing liquid being adapted to satisfy the following equation:

Method of humidifying a gas

Growing community of inventors

Hiroshima, Japan

Ritsuo Hashimoto