Process for electroplating

Details Process for electroplating Process for electroplating

C - Chemistry, Metallurgy

25

D

C25D 21/12 (2006.01) C25D 3/22 (2006.01) C25D 21/18 (2006.01)

Patent

CA 2070458

-20 - PROCESS FOR ELECTROPLATING Abstract In the electroplating of certain metals, such as zinc, a metal build-up in the electroplating bath occurs due to a higher anode efficiency than cathode efficiency, in the cell, and also due to chemical dissolution of the anode in the electroplating bath. An electrowinning cell is provided to remove metal from the electroplating bath. The electrowinning cell is operated with a current sufficient to remove metal from the bath substantially equal to that chemically dissolved into the bath as well as the build-up due to the difference in the anodic and cathodic efficiencies.

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