Patent ID: 7763131
Filing Date: 2010-07-27
Classification: B21B,C21D,F27B,F27D

Abstract:
1. A method of improving the cooling of a blown-gas cooling chamber or of a blown-air cooling section in a line for heat treating steel and/or aluminum, and/or of improving the quality of products for treatment by reducing the vibration generated by the cooling, in which jets of gas or air are projected against each of the faces of a strip traveling through the section or chamber, wherein the jet of gas or air are emitted from blow tubes fitted to tubular nozzles arranged at a distance transversely on either side of the travel direction of the strip, the jets being directed towards the corresponding face of the strip while being inclined simultaneously essentially towards the edges of the strip in a plane perpendicular to a panel of the strip and to the travel direction of the strip, and towards the upstream or downstream end of the strip in a plane perpendicular to the plane of the strip and parallel to the travel direction of the strip, wherein the jets of gas or air emitted from a single tubular nozzle are inclined both towards the upstream end and towards the downstream end of the strip.