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:
Nov. 22, 1994
Filed:
Dec. 23, 1992
Hitachi, Ltd., Tokyo, JP;
Abstract
In a rolling mill comprising upper and lower work rolls crossed each other to perform strip crown control, a straight line connecting the center of an operation side screwdown screw and the center of a drive side screwdown screw is inclined relative to a line perpendicular to the rolling direction. A cross angle .theta. to be controlled is changed in opposite plus and minus directions about the straight line connecting both the screwdown centers. A large extent of strip crown control can be achieved with a smaller cross deviation than usual in the prior art, thereby permitting omission of an equalizer beam. Further, change in the extent by which strip crown is varied upon control with respect to the cross angle becomes substantially linear and hence control is more easily conducted. Since the cross angle 2.theta. between the two work rolls is larger than 2.degree., the transition temperature is not changed and uniformity in quality can be ensured.