Mitsubishi Jukogyo Kabushiki Kaisha

Mitsubishi Heavy Industries Limited

Nippon Steel Corporation

Sumitomo Metal Industries, Inc.

Tetsuo Kajihara

Atsushi Tomizawa

Kanji Hayashi

Kazuo Morimoto

Hideo Yamamoto

Hideaki Furumoto

Hiromi Matsumoto

Yuji Uehori

Tsuneo Nakano

Kiyotaka Hori

Shunji Kamata

Toru Kaneko

Hiroshi Matsuo

Toshiya Oi

Yoichi Hangai

Masahiro Matsurra

Eiji Koumoto

A wiper apparatus which sandwiches a strip plate between upper and lower wiper rolls and to squeeze out a rolling oil adhering to the strip plate , wherein backup rolls for reinforcing the wiper rolls each have a single sleeve rotatably supported by two bearings on a roll shaft, and the bearings on the upper and lower backup rolls and are disposed on the roll shafts with a shorter span than the barrel length of the sleeve, and in point symmetry. Thus, a contact linear pressure distribution of the wiper rolls on the strip plate can be made uniform.

Wiper for liquid substances

The invention provides a method for improving the luster of a metal sheet surface without deteriorating the productivity and also in reducing the difference in glossiness between the upper and lower surfaces of the metal sheet at the time of cold-rolling. By making the velocity, after rolling of the metal sheet, equal to or larger than the rotational circumferential velocity of the work rolls, and by rolling the metal sheet with upper and lower work rolls crossed with each other in such manner that an angle of slip scratches left on the metal sheet surfaces becomes 5 degrees or larger and shear deformation in the widthwise direction can be effectively given to the metal sheet just before rolling, thereby improving the surface luster of the metal sheet. In addition, in the case where luster of the metal sheet surface is improved by changing the cross angle between the upper and lower crossing work rolls, the sheet configuration is corrected by a configuration control actuator, depending upon the sheet configuration of the metal sheet after the cross angle is changed. Furthermore, the difference in glossiness between the upper and lower surfaces of the metal sheet is reduced by selecting the cross angles formed by the upper and lower crossing work rolls with respect to the direction at right angles to the rolling direction and also employing rolls having different surface roughness as the upper and lower work rolls.

Method for shining metal sheet surfaces and method for cold-rolling

A tandem rolling mill train for rolling metal plate or sheet includes a plurality of crossed-roll type rolling mill stands. The work rolls on at least two of the crossed-roll type rolling mill stands are respectively slanted in opposite directions so that the widthwise shear deformation developed on the upstream crossed-roll type stand is reduced by the widthwise shear deformation caused on the downstream crossed-roll type stand.

Tandem rolling mill train for metal plate and sheet

Growing community of inventors

Hiroshima, Japan

Tetsuo Kajihara