Other

Mitsubishi Heavy Industries Limited

Tadashi Nakagawa

Kanji Hayashi

Hideyuki Nikaido

Toshiaki Amagasa

Takeshi Hirabayashi

Tetsuo Ichikizaki

Shigefumi Katsura

Shozo Tashiro

Atsushi Yuki

Motofumi Kuroda

Mitsuhiro Takagi

Shigeru Isoyama

Masuto Shimizu

Shinsaku Kimura

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

In the present invention, in cutting the top and bottom surfaces of a hot-rolled sheet by the rotation of milling cutters holding the sheet therebetween in the thickness direction of the sheet in the running process of the hot-rolled sheet, the cutting resistance determined by the cutting conditions including the type of hot-rolled sheet, the temperature in cutting, and the cut depth is controlled by the adjustment of cut depth, and cutting is performed by making the tension produced on the hot-rolled sheet by the cutting resistance lower than the breaking strength of the joint portion to prevent the breakage of hot-rolled sheet.

Surface cutting apparatus for hot-rolled steel products

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Hirshima, Japan

Tadashi Nakagawa