Plating workpiece using auxiliary member to control current...

Details Plating workpiece using auxiliary member to control current... Plating workpiece using auxiliary member to control current...

C - Chemistry, Metallurgy

25

D

204/19

C25D 5/34 (2006.01) C25D 3/04 (2006.01) C25D 5/00 (2006.01)

Patent

CA 1224180

Abstract The present invention relates to a method of electroplating metal, pri-marily chromium, onto a workpiece connected as cathode in a current cir- cuit, said workpiece being fed through an electrolyte at a predetermined speed past the anode in the current circuit. According to the invention, immediately before the anode a member is arranged which controls the current density between itself and the cathode so that etching of the cathode is obtained. This means that the electroplating is performed on a newly etched surface. The invention also covers various methods of achieving this etching.

421074

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