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:
Aug. 25, 1998
Filed:
Mar. 11, 1997
Michel Boyer, Chartrettes, FR;
Jean-Jacques Nozieres, Chaville, FR;
Stein Heurtey, Ris Orangis, FR;
Abstract
Process for the continuous heat treatment of a metal strip, the latter travelling through a furnace, which is thermally insulated, and in a protective atmosphere; the said furnace consisting of at least one section, for heating, for temperature hold and for cooling; the said strip being guide by a plurality of rollers arranged especially in the lower part and in the upper part of the said sections, so as to form a plurality of runs, wherein the strip passes through at least one partial or total isolating device positioned within at least one section or between two sections, so as to ensure different heat transfer properties on the strip compared with at least one other adjacent section having a different atmosphere, by adjusting the composition of the atmosphere consisting of a gas mixture whose hydrogen or helium content exceeds 5% and more particularly 15%, in order to allow differentiation of the thermomechanical properties of the atmosphere.