Electroplate to moving metal
OwnerTerry E. Dorsett, David P. Riningerinventors
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Abstract
An anodic roller electroplating process utilizes novel anodic roller apparatus and provides flexible operation parameters. The novel anodic roller apparatus comprises a perforate valve metal cylinder such as in mesh form. The cylinder has an electrocatalytic coating and an electrolyte-containing, porous wrap. Processing parameters can provide desirable electroplate, such as of metal coils, at enhanced plating speeds as well as providing carefull control over plate composition and deposition thickness.
Claims10
The method of metal electroplating a moving strip of metal wherein a rotating anode contacts a cathodic metal strip, which method comprises:
- contacting tangentially said metal strip with a cylindrical, non-sacrificial anode capable of rotational movement, said anode comprising a hollow and at least substantially perforate, valve metal cylinder having an exterior surface electrocatalytic coating containing metal oxide, said anode having a thin, non-conductive and highly porous outer sleeve covering of synthetic resin, with said sleeve containing metal electroplating solution;
- rotating said anode in contact with said metal strip at a rate providing relative movement between said strip and said anode;
- impressing a current between said anode and said cathode;
- and
- electroplating said metal strip at a current density of not less than about 3,500 amperes per square foot of anode area.
Dependencies are inferred from the claim text.