Method and apparatus for depositing hard chrome coatings by brush plating

  • US 5,453,174 A
  • Filed: 01/10/1994
  • Issued: 09/26/1995
  • Est. Priority Date: 07/16/1992
  • Status: Expired due to Fees
First Claim
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1. An improved apparatus for selective electrolytic plating of a hard chromium coating upon a cathodic workpiece comprising:

  • (a) a dielectric electrode support means,(b) a lead based anodic electrode arranged and constructed for support by said dielectric support means closely spaced to a predetermined surface of a cathodic workpiece to be plated and effecting at all times during electroplating substantially full anode coverage of the area of the surface of the cathodic workpiece to be plated,(c) an anode wrap material positioned upon the active surface of the anodic electrode in opposition to and contigous with the cathodic workpiece,(d) conduit means for delivering a chromic acid containing electrolytic solution to the anode wrap material,(e) means to facilitate substantially continuous relative movement of the anodic electrode with respect to the contiguous surface of the cathodic workpiece with the anode wrap material against such surface to be coated, and(f) means arranged and adapted to allow continuous feed and replacement of electrolytic solution in the anode wrap material.

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