The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jul. 26, 1988
Filed:
Mar. 27, 1986
Hiroaki Kuwano, Yokohama, JP;
Takao Kawanami, Kitakyushu, JP;
Ken Okudaira, Kitakyushu, JP;
Akihiro Tanaka, Hachioji, JP;
Ishikawajima-Harima Jukogyo Kabushiki Kaisha, all of, JP;
Nippon Steel Corporation, all of, JP;
Kabushiki Kaisha Toshiba, all of, JP;
Abstract
A multi-pass rolling method which permits a multi-pass rolling-mill stand to perform multi-path rolling and still stabilize the rolling operation by preventing lateral deviation movement of a metal workpiece being rolled. The rolling-mill stand has three or more work rolls arranged one above the other and the workpiece is simultaneously rolled at two or more points by at least one of the work rolls. Directly or indirectly roll gaps are detected on the work and drive sides of at least one pass by sensors. A difference signal from the output signals of the sensors is obtained thereby determining a roll gap difference. Control devices are provided which are responsive to the difference signal for independently changing the roll gaps on the work and drive sides.