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:
Dec. 21, 1999
Filed:
Dec. 22, 1998
Vladimir B Ginzburg, Pittsburgh, PA (US);
Danieli United, A Division of Danieli Corporation, Pittsburgh, PA (US);
International Rolling Mill Consultants, Inc., Pittsburgh, PA (US);
Abstract
The present invention is an apparatus and method for reducing the total number of required rolling passes of a metal strip in a cold rolling mill to achieve a desired strip thickness. This is accomplished by increasing the exit strip tension of the metal up to 85% of the yield strength Y of the metal strip. This increase in exit strip tension allows a manufacturer to process strip in an apparatus at a maximum thickness reduction of about 50 to 55% in a single rolling pass. At the same time, the increased exit strip tension will result in a reduced lever arm of the work roll of the cold rolling mill and will substantially reduce all of the roll separating force, motor torque and roll mill power of the apparatus.