Constellium Issoire

Constellium Neuf-brisach

Constellium Muscle Shoals LLC

Romain-Fabrice Bernes

Gilles Guiglionda

Guillaume Delgrange

Vincent Duhoux

Christophe Chabriol

Bruno Magnin

Trevor Gilmore

Erin Deda

Xavier Unterfinger

John M Evans

Daniel Bellot

Jean-François Verdier

Clement Questroy

The invention relates to a hot reversing mill equipped with one or more cooling systems consisting of bars of nozzles spraying an aluminum blank. It also relates to the hot rolling process associated with this hot reversing mill wherein the cooling system serves at least once making it possible to produce aluminum sheets advantageously. It also relates to the process for rolling an AA6xxx series aluminum alloy wherein a blank is cooled during the hot rolling and a sheet obtained with this process. The invention makes it possible to enhance the productivity of reversing mills by enhancing the metallurgical quality and/or the productivity of the other fabrication steps. The invention is particularly useful for providing superior quality 6xxx alloy sheets intended for the automotive industry.

Method and equipment for cooling on a reversing hot rolling mill

The invention relates to a vacuum chamber element obtained by machining and surface treatment of a plate of thickness at least equal to 10 mm made of aluminium alloy composed as follows (as percentages by weight), Si: 0.4-0.7, Mg: 0.4-1.0; the Mg/Si ratio as a percentage by weight being less than 1.8; Ti: 0.01-0.15, Fe 0.08-0.25; Cu &#x3c;0.35; Mn &#x3c;0.4; Cr: &#x3c;0.25; Zn &#x3c;0.04; other elements &#x3c;0.05 each and &#x3c;0.15 in total, the rest aluminium, characterized in that the grain size of said plate is such that the mean linear intercept length, measured in plane L/TC according to standard ASTM E112, is at least equal to 350 &#x3bc;m between surface and &#xbd; thickness. The invention also relates to the method of manufacturing of such a vacuum chamber element. The products according to the invention are particularly advantageous, particularly in terms of resistance to creep deformation at high temperature, while having high properties of corrosion resistance, homogeneity of properties in thickness and machinability.

Aluminium alloy vacuum chamber elements stable at high temperature

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Issoire, France

Romain-Fabrice Bernes