Apparatus for electroplating metal strips

摘要

In an apparatus for electroplating metal strips, in particular for zinc-plating them, insulating lips (14) which extend over the length of the rollers almost up to the point of contact (17) between strip and roller are provided in the wedge-angle region (16) between the incoming and possibly also the outgoing metal strip (1) and the current-conducting rollers (2 and 4). These lips are intended to prevent the coating of the current-conducting roller in this region. In addition, protective cathodes (11) which essentially extend over the length of the roller parallel to its axis are situated underneath the current-conducting rollers (2, 4) and an electrolyte is provided between protective cathode (11) and current-conducting roller (2, 4). The turning roller (3) situated in the electrolytic bath (8) is designed as current-conducting roller and for this purpose it has an insulating encapsulation. <IMAGE>