C - Chemistry – Metallurgy – 23 – C
Patent
C - Chemistry, Metallurgy
23
C
C23C 22/68 (2006.01) B21D 22/20 (2006.01) C23C 2/26 (2006.01) C25D 11/34 (2006.01)
Patent
CA 2551492
The aim of the invention is the use of an sulphate ions-containing solution for treating the surface of a galvanised steel sheet in order to reduce a coating degradation during the chapping thereof and to improve the temporary protecting said sheet against corrosion. A method for lubricating said coated sheet is also disclosed.
L'invention a pour objet l'utilisation d'une solution de traitement contenant des ions sulfates, pour traiter la surface d'une tôle d'acier galvanisée en vue de réduire la dégradation du revêtement lors de la mise en forme de ladite tôle, et en vue d'améliorer la protection temporaire contre la corrosion de ladite tôle. Elle concerne également un procédé de lubrification d'une telle tôle revêtue.
Arnoux Claude
Bello Alain
Jacqueson Eric
Petitjean Jacques
Arcelor France
Norton Rose Or S.e.n.c.r.l. S.r.l./llp
Usinor
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