Electropolishing of Gold and Gold Alloys
Q. Can you give me the formulation of a solution for electropolishing of gold jewelry that does not contain cyanide? —P.G.
A. I don’t have a non-cyanide formulation for electropolishing of gold, however such solutions are available commercially. A manual on gold jewelry manufacturing titled "Handbook on Finishing in Gold Jewellery Manufacture" by Valerio Faccenda has a nice section in electropolishing of gold and gold alloys.
Why is it important for you to know this?
Masking is employed in most any metal finishing operation where only a specifically defined area of the surface of a part must be exposed to a process. Conversely, masking may be employed on a surface where treatment is either not required or must be avoided. This article covers the many aspects of masking for metal finishing, including applications, methods and the various types of masking employed.
An alternative product for passivation...