PROCESS FOR THE ELECTROLYTIC ZINC COATING OF ALUMINIUM ALLOYS

摘要

There is disclosed a process (1) for the electrolytic zinc coating of aluminium alloys including a cathode protection (6) of a piece (2) obtained by placing the piece (2) made of aluminium alloy to be treated at a cathode (12) and at least one aluminium element (15) and at least one zinc element (16) at an anode (14) for the deposition of aluminium and zinc oxide on the piece (2) at the cathode (12) adapted to promote a subsequent acidic electrolytic galvanising (7) of the piece (2) made of aluminium alloy without the production of sludges.