Process and device for cleaning galvanic baths to plate metals

Details Process and device for cleaning galvanic baths to plate metals Process and device for cleaning galvanic baths to plate metals

C - Chemistry, Metallurgy

25

D

C25D 3/56 (2006.01) C25D 21/22 (2006.01)

Patent

CA 2740644

The invention concerns a process which is used to plate functional layers of acidic or alkaline zinc or zinc alloy baths which contain nitrogenous organic additives, a soluble zinc salt and if necessary other metal salts selected from Fe, Ni, Co and Sn salts, where the bath composition for the regeneration is conveyed through an appropriate device having an ion exchanger resin to remove cyanide ions.

La présente invention concerne un procédé utilisé pour déposer des couches fonctionnelles de bains acides ou alcalins de zinc ou d'alliage de zinc qui contiennent des additifs organiques azotés, un sel de zinc soluble, et si nécessaire d'autres sels métalliques choisis parmi les sels de Fe, Ni, Co et Sn, et qui sont régénérés par un dispositif approprié comportant une résine échangeuse d'ions permettant déliminer les ions cyanure.

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