Zinc Plating Problems
Posted by admin on September 28th, 2009 at 11:01am
I am having some trouble getting zinc plating going… I have 1000 ml of solution and attempted to plate a single bolt (10mm by about 2 inches) which had been sandblasted and cleaned. I originally tried 12V @ 1.5 amps but later tried 12V @ 600 milliamps with the same results. As soon as I apply power, the bolt starts to fizz and turn black. If I pull it out, it is like a slimy coating on the bolt. You can see here where I rubbed some of the coating off:

If I let it go for a few minutes, I end up with something like this (this was the wire it was hanging from)

Any idea what I am doing wrong? The solution is 1000 ml of distilled H2O with 120 g of Aluminum Chloride and 20 g of Zinc Chloride.
thanks,
Nuc
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Tags: aluminum, anodizing, coating, finishing, metal finishing, Plating, powder coating
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