Mitsubishi Heavy Industries Limited

Mitsubishi Jukogyo Kabushiki Kaisha

Shinsaku Kimura

Kanji Hayashi

Masashi Yoshikawa

Kazuo Morimoto

Hironori Fujioka

Ritsuo Hashimoto

Keiji Mizuta

Akira Kaya

Tadashi Nakagawa

Jyunsou Fukumori

Shinji Hirai

Jyun Sakamoto

An object of the present invention is to provide a cross rolling machine in which the simplification of a drive system and the improved rigidity of a housing are achieved, the accuracy of crossing operation is enhanced, and the economical efficiency is high. To achieve the above object, a pair of top work roll chock,and top backup roll chock,are fixed by operating hydraulic cylinders,and,on the delivery side in synchronism to move pressing members,and,in the direction of delivery side to the position for positioning and by moving pressing members,and,on the entrance side in the direction of delivery side by hydraulic cylinders,and,on the entrance side to press the chocks,and,on the pressing members,and,on the delivery side. A pair of bottom work roll chock,and bottom backup chock,are positioned on the entrance side and fixed by operating hydraulic cylinders,and,in the opposite direction (entrance direction). Thus, the top pair and the bottom pair are pair crossed.

Cross rolling machine

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

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Hiroshima, Japan

Shinsaku Kimura