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:
Oct. 14, 2008
Filed:
Aug. 27, 2004
Hans-peter Richter, Friedewald, DE;
Hartmut Pawelski, Ratingen, DE;
Ludwig Weingarten, Düsseldorf, DE;
Thorsten Bode, Düsseldorf, DE;
Jürgen Klöckner, Netphen, DE;
Ralf Ohrndorf, Hilchenbach, DE;
Hans-Peter Richter, Friedewald, DE;
Hartmut Pawelski, Ratingen, DE;
Ludwig Weingarten, Düsseldorf, DE;
Thorsten Bode, Düsseldorf, DE;
Jürgen Klöckner, Netphen, DE;
Ralf Ohrndorf, Hilchenbach, DE;
SMS Demag AG, Düsseldorf, DE;
Abstract
The invention relates to a method and a device for applying an adjustable tensile-stress distribution, in particular in the edge regions during the cold-rolling of metal strips (), in particular metal foil, in order to reduce the risk of an excessive build-up of tension and cracks at the edges of the strip, which can lead as a negative consequence to cracks in the strip and to a reduction in production, and in order to improve the surface of the strip and its planarity, even for a relatively high strip displacement speed, and also to reduce strip trimming widths. To achieve these aims, at least one or a combination of two of the following measures are implemented: a) separation of lubrication and cooling of the working rolls by lubricating on the run-in side and cooling on the discharge side, b) additional influencing of the strip edges using a hot edge spray', in particular by spraying () rolling oil with differing temperatures in zones, c) use of a special cross-sectional configuration of the working rolls (') in the vicinity of the strip edges, which creates a partial material build-up during the blooming pass, said build-up forming a longer strip edge with subsequent passes, thus counteracting the risk of an excessive build-up of tensile stress.