PASSIVATION PROCESS OF A STEEL TINPLATE

The present invention concerns a Cr-free passivation process of a tinplate comprising the following steps in sequence:a. subjecting said tinplate to at least one cathodic electrolytic treatment in an aqueous solution containing at least one sulphate of an alkali metal to obtain a tin oxide surface l...

Ausführliche Beschreibung

Bibliographische Detailangaben

Hauptverfasser:	GIANNETTI, Armando, ASTENGO, Giovanni, MARTINES, Stefano
Format:	Patent
Sprache:	eng ; fre ; ger
Schlagworte:	APPARATUS THEREFOR CHEMISTRY ELECTROFORMING ELECTROLYTIC OR ELECTROPHORETIC PROCESSES METALLURGY PROCESSES FOR THE ELECTROLYTIC OR ELECTROPHORETIC PRODUCTIONOF COATINGS
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