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:
Sep. 09, 2003
Filed:
Jul. 06, 2000
André Bodin, Santpoort-Noord, NL;
Corus Staal BV, Ijmuiden, NL;
Abstract
A process for producing a ferritically rolled steel strip, in which liquid steel is cast in a continuous-casting machine ( ) to form a slab and, utilizing the casting heat, is conveyed through a furnace device ( ) undergoes preliminary rolling in a preliminary rolling device ( ) and, in a final rolling device ( ), is finishing-rolled to form the ferritic steel strip with a desired final thickness, in which process, in a completely continuous, an endless or a semi-endless process, the slab is rolled in the austenitic range in the preliminary rolling device ( ) and, after rolling in the austenitic range, is cooled to a temperature at which the steel has a substantially ferritic structure, and the strip is rolled, in the final rolling device, at speeds which substantially correspond to the speed at which it enters the final rolling device ( ) and the following thickness reduction stages, and in at least one stand of the final rolling device ( ), the strip is ferritically rolled at a temperature of between 850° C. and 600° C., and after leaving the final rolling device ( ), is cooled rapidly to a temperature below 500° C. in order substantially to avoid recrystallization.