TWO-STAGE PRE-TREATMENT OF ALUMINUM COMPRISING PICKLING AND PASSIVATION

The invention relates to a method for anti-corrosion treatment of components produced from aluminum, comprising a pre-treatment stage and subsequent painting. The passivation of the pre-treatment stage includes the bringing of the components into contact with an acidic aqueous composition based on w...

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Bibliographische Detailangaben
Hauptverfasser:	Andrea SOLDATI, Thomas JOHN-SCHILLINGS, Andreas Richard BENDER, Mathieu VAN DE CAPPELLE, Ina KRÜGERMANN
Format:	Patent
Sprache:	eng ; spa
Schlagworte:	CHEMICAL SURFACE TREATMENT CHEMISTRY CLEANING OR DEGREASING OF METALLIC MATERIAL BY CHEMICALMETHODS OTHER THAN ELECTROLYSIS COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATIONOR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY IONIMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL COATING MATERIAL WITH METALLIC MATERIAL COATING METALLIC MATERIAL DIFFUSION TREATMENT OF METALLIC MATERIAL INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION INGENERAL METALLURGY SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THESURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION
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Beschreibung
Zusammenfassung:	The invention relates to a method for anti-corrosion treatment of components produced from aluminum, comprising a pre-treatment stage and subsequent painting. The passivation of the pre-treatment stage includes the bringing of the components into contact with an acidic aqueous composition based on water soluble compounds of the elements Zr and/or Ti. Pickling and passivation are coordinated with each other such that a re-dosing of active components of the passivation solution can occur in substantial parts from the pickling solution. La invención se refiere a un método para el tratamiento anticorrosión de componentes producidos de aluminio, que consiste en una etapa de tratamiento previo y el pintado subsiguiente. La pasivación de la etapa de tratamiento previo consiste en poner en contacto los componentes con una composición ácida acuosa de los componentes solubles en agua de los elementos Zr y/o Ti. El decapado y la pasivación se coordinan entre sí para que pueda ocurrir una dosificación recurrente de los componentes activos de la solución para pasivación en partes considerables de la solución para el decapado.