Kawasaki Steel Corporation

Other

Mitsubishi Jukogyo Kabushiki Kaisha

Mitsubishi Heavy Industries Limited

Atsushi Yuki

Shigefumi Katsura

Kanji Hayashi

Toshiaki Amagasa

Tetsuo Ichikizaki

Shozo Tashiro

Hideyuki Nikaido

Shigeru Isoyama

Takeshi Hirabayashi

Masuto Shimizu

Motofumi Kuroda

Tadashi Nakagawa

Mitsuhiro Takagi

Kazuo Morimoto

Kazuya Tsurusaki

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

A surface cutting apparatus for hot-rolled products cuts top and bottom surfaces of a hot-rolled steel product continuously or intermittently by passing the steel product between a pair of rotary drums (milling cutters) that rotate in a direction reverse to each other. The apparatus includes a disk having a larger diameter than that of the rotary drums at one or both ends of at least one of the rotary drums. The disk recognizes a gap between the rotary drums, allowing a zero adjustment to be made without excessively pressing the rotary drums. The measurement can be by a non-contact distance meter, eddy-current type sensor or other sensor.

A sheet bar joining apparatus comprises a heater provided between a delivery-side clamp for clamping a rear end of a preceding sheet bar and an entry-side clamp for clamping a front end of a succeeding sheet bar; upper and lower anti-buckling plates provided on the entry-side clamp and located above and below the sheet bars; upper comb tooth portions and lower comb tooth portions formed in the upper and lower anti-buckling plates, respectively; a heat resistant insulator provided at a surface of each comb tooth portion opposed to the sheet bars; and a plurality of groove portions provided near the surface of each comb tooth portion opposed to the sheet bars.

Induction heating apparatus for joining sheet bars

Surface cutting method and apparatus for hot-rolled steel products

Growing community of inventors

Chiba, Japan

Atsushi Yuki