EP 2130950 B1 20100922 - Method for pretreating reinforced steel, wrought iron or cast iron before galvanic coating
Title (en)
Method for pretreating reinforced steel, wrought iron or cast iron before galvanic coating
Title (de)
Verfahren zur Vorbehandlung von gehärtetem Stahl, Schmiedeeisen oder Eisenguss vor einer galvanischen Beschichtung
Title (fr)
Procédé de prétraitement d'acier durci, de fer forgé ou de fonte de fer avant un revêtement galvanisé
Publication
Application
Priority
EP 08010120 A 20080603
Abstract (en)
[origin: EP2130950A1] Method for pretreating an electrolytic substrate, which is to be coated with zinc and/or zinc alloy, comprises cathodic etching in diluted acid, where: the substrate is hardened steel, wrought iron or cast iron; during the cathode etching, the cathode and anode are separated by an ion exchange membrane; the cathode comprises hydrochloric acid (catholyte); and the anode comprises an aqueous mineral acid, except hydrochloric acid, and/or alkyl sulfonic acid (anolyte). An independent claim is included for a method for electrolytic coating of the substrate with mono- or multi-layers of zinc and/or zinc alloy comprising pretreating the substrate by the above process, before coating.
IPC 8 full level
C25D 5/26 (2006.01); C25D 5/36 (2006.01); C25F 1/06 (2006.01)
CPC (source: EP)
Designated contracting state (EPC)
AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MT NL NO PL PT RO SE SI SK TR
DOCDB simple family (publication)
EP 2130950 A1 20091209; EP 2130950 B1 20100922; AT E482304 T1 20101015; DE 502008001397 D1 20101104; ES 2350873 T3 20110127; PL 2130950 T3 20110331; PT 2130950 E 20101122
DOCDB simple family (application)
EP 08010120 A 20080603; AT 08010120 T 20080603; DE 502008001397 T 20080603; ES 08010120 T 20080603; PL 08010120 T 20080603; PT 08010120 T 20080603