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. 16, 1996
Filed:
Feb. 03, 1993
Jean-Claude Werquin, Ronchin, FR;
Jacques Bocquet, Aulnoye, FR;
Chavanne-Ketin, Puteaux, FR;
Abstract
A composite working roll, in particular for a roughing or finishing stand of a hot strip rolling mill, said working roll comprising a core of a metal selected from the group consisting of iron and steel, an outer zone of chromium-vanadium steel and a bonding zone between said core and said outer zone, wherein said steel of said outer zone contains 1.3 to 2.2% by weight carbon, 8 to 16% by weight chromium and 4 to 7% by weight vanadium, the remainder being constituted by iron and other elements which are usually present. Preferably the steel of the outer zone contains 9 to 14% chromium and 5 to 6,5% vanadium and the vanadium content decreases with increase in the carbon content.