METHOD FOR THE CORROSION-PROTECTIVE AND CLEANING PRETREATMENT OF METAL COMPONENTS

The invention relates to a multiple-step method for the corrosion-protective pretreatment of components, said pretreatment being at least partially produced from a metal material predominantly consisting of at least one of the elements iron zinc and/or aluminium, according to which the components ar...

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Bibliographic Details
Main Authors EHMANN, Dalija, WAWRZYNIAK, Jerzy-Tadeusz, SENATORE, Matilde, BONGARTZ, Nils
Format Patent
LanguageEnglish
French
German
Published 28.10.2020
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Summary:The invention relates to a multiple-step method for the corrosion-protective pretreatment of components, said pretreatment being at least partially produced from a metal material predominantly consisting of at least one of the elements iron zinc and/or aluminium, according to which the components are first brought into contact with an acid aqueous composition (A) containing water-soluble compounds of the elements Zr and/or Ti and then with an acid aqueous composition (B) containing phosphate ions and an accelerator. The method is particularly suitable for the pretreatment before an electrocoating.
Bibliography:Application Number: EP20180812172