Kawasaki Steel Corporation

Fujio Aoki

Toshisada Takechi

Norio Takashima

Masanori Kitahama

Masanori Ebihara

Hideo Takekawa

Toshiaki Amagasa

Hiroyuki Yoshimura

Kunio Yoshida

Naoki Hatano

Kuniaki Sato

Kunio Isobe

Junzo Nitta

Takashi Ishikawa

Hiroshi Sekiya

Takashi Kawase

Nobuhiro Ito

Method of joining steel sheet bars and a joining apparatus

Method of joining steel sheet bars in hot rolling and a continuous hot

Continous hot rolling method and joining method of sheet bar

A method of continuously hot-rolling sheet bars in which a roughly rolled leading sheet bar and a trailing sheet bar are abutted prior to a hot finish rolling step. Plastic deformation of either or both of the cut rear and front end portions of the leading and trailing sheet bars is applied. End portions are brought into contact with each other due to metal flow, forming a gap portion between the sheet bars. The thickness of the sheet bar around the gap portion is enlarged in comparison to the thickness of the contact portions, and hot finish rolling fills the gap so that the bars are strongly joined over their width.

Method of continuously hot-rolling sheet bars

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Chiba, Japan

Fujio Aoki