Kawasaki Steel Corporation

Yasuo Ichii

Toshio Imazeki

Taichi Kukizaki

Kiyoshi Ueda

Satoshi Shibuya

Itaru Hishinuma

Toshihiko Chino

Saburo Ikeda

Hideyuki Nikaidoh

In order to prevent a preceding strip from being oversupplied on a delivery side of a coiling pinch rolls and to prevent a leading end of the following material from being over supplied on an entrance side of the coiling pinch rolls, to provide a strip coiling method in which a strip sent from a rolling mill is cut to a predetermined length by a strip shear (,), and a cut strip is coiled by a mandrel (,) of a coiler (,) via a coiling pinch rolls (,) disposed on a delivery side of a strip shear (,), characterized in that after a tail end of the strip coiled by the mandrel (,) via the coiling pinch rolls (,) is cut by the strip shear (,), a circumferential speed of the coiling pinch rolls (,) is higher than a transfer speed of the following material immediately after the cutting operation and lower than a coiling speed of the strip coiled by the mandrel (,).

Strip coiling method

The tension of a strip can be controlled with high responsiveness and high accuracy despite its drastic external variation by threading the strip (1) between a transportation roll (2) and a movable transportation roll (10) and moving the movable transportation roll (10). The movable transportation roll (10) is mounted on one end of an arm (11), which is mounted for a swing motion around a supporting shaft (12), a torque around the supporting shaft (12) is generated in the arm (11) by an arm driving motor (14) connected directly to the supporting shaft (12), thereby applying a tension to the strip (1). The angle of swing motion of the arm (11) is detected by an arm angle sensor (16), and the tension of the strip (1) is detected by a tension sensor (15). The torque to be generated in the arm (11) is corrected in accordance with the detected angle and tension, whereby the strip tension is controlled for a target tension.

Strip tension control apparatus

Growing community of inventors

Chiba, Japan

Yasuo Ichii