Other

Mitsubishi Jukogyo Kabushiki Kaisha

Kawasaki Steel Corporation

Kazunori Nagai

Shigeru Isoyama

Takeshi Hirabayashi

Kanji Hayashi

Akio Kuroda

Hideyuki Nikaido

Toshiaki Amagasa

Toshisada Takechi

Yoshiki Mito

Nozomu Tamura

Hirosuke Yamada

Kunio Miyamoto

Kazuo Morimoto

Kazuya Tsurusaki

Katsuhiro Takebayashi

Kiyoshi Izumi

Naohiko Ishibashi

Takahiro Yamasaki

Takashi Okai

Takushi Kagawa

A continuous hot rolling mill with a metal block conveying apparatus and a metal block joining apparatus which moves with the metal blocks along the metal block conveying apparatus to conform a joining operation. The metal block conveying apparatus uses rollers supported by cylinders with a common hydraulic circuit which allows the cylinders to follow guide rails on the metal block joining apparatus and lower out of the path of the metal block joining apparatus and then return to a metal block support position after the metal block joining apparatus' passage without individual control circuits and valves for each of the cylinders.

Continuous hot rolling mill with metal block conveying apparatus

The invention comprises a continuous hot rolling method in which a rear end portion of a preceding metal block and a fore end portion of a succeeding metal block are cut and the metal blocks are joined to each other by heating and pressing followed by a finish rolling. A region of each metal block is restrained from a clamping position to the end portion thereof in order to prevent a change in level of the metal blocks in heating and pressing the piece. The end portions of the metal blocks can be thus prevented from deformation.

Defectively joined portion removal apparatus for use in a continuous hot rolling process

Assuming that the processes of joining, rolling, coiling, etc. of a material is evaluated by a preset speed pattern after the extraction from a heating furnace, the required time is predicted and calculated for both of a preceding material and a following material. At the time when the following material can catch up with the preceding material at an aiming position on the line, the following material is extracted from the heating furnace according to the result of the above prediction calculation. Control is carried out so that both of the preceding material and the following material finish the process at a preset speed. Also, the traveling speed of the following material is controlled according to the position and the speed of the tail edge of the preceding material in a section close to the catch-up position so that a distance between the tail edge of the preceding material and the leading edge of the following material be closed. Thereby, three of the tail edge of the preceding material, the leading edge of the following material, and a movable joining apparatus are controlled at the aiming position on the hot rolling line so as to be in a positional relationship suitable for joining, by which the joining operation is completed properly in the travel zone of the joining apparatus.

Hot rolling method and equipment

Hot rolling method for continuously joining metal blocks and an

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Hiroshima, Japan

Kazunori Nagai