We have a customer who wants our company to copper plate on a zinc alloy (Zamak 3) substrate. We currently cyanide copper plate on steel. What is the process for doing this? P.H.
Actually, the plating of zinc alloys is fairly straightforward. Since you are currently using cyanide-based copper plating baths, you are familiar with one of the plating baths required. A standard process for plating copper on zinc alloys is as follows:
I should also add that a number of proprietary non-cyanide alkaline copper plating baths are commercially available. They work well in many applications and allow you to get away from using cyanide-based materials. Vendors of these baths can be found in the Products Finishing Directory and Guidebook, 2004 edition, www.pfonline.com/suppliers.html.