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Letter 1006 Non-cyanide Copper Plating--- Hi, Does anyone have any experience with using EPI 30/30 non-cyanide copper solution to plate small, white metal(tin-lead alloys and zinc(za)) castings in barrels or on racks.Thanks Ken F [last name deleted for privacy due to age of
posting]
I think that alkaline non cyanide copper operates only on steel and not on zinc castings.
Ken, I'll have to disagree with the people who indiscriminately knock all non-cyanide copper processes. I have experience with the EPI's E-Brite 20/20, the predecessor of the 30/30 bath. It did all the things the manufacturers claimed and then some - I sucessfully electroformed with it. The bath operates at a pH of (if memory serves) around 9.5, has great adhesion to steel, nickel, etc. you can plate out of it directly onto aluminum (naturally, no adhesion unless you zincate, but who cares when all you want is to electroform). I know people who use the 30/30 bath and are quite happy with it. Hope this helps. Wishing you luck, PlaterB
Just out of curiosity, are you using an Acid Cu bath or are you using Cu Pyrophosphate? I know Cu Pyro has excellent throwing power but, I've only used it on WRe helicies. I'm not sure about SnPb or Zn. I will do some research and see what I can come up with. Laura Fatke
Has anybody got information about alkali non-cyanide electroplating of zinc onto steel? We have tried the process unsuccessfully so far. Cleaning seems to be a critical factor in the process as the operational window for plating is far less tolerant than the cyanide based process. Paul Hickey
-- If anyone has the time, I'm doing a report on the use of cyanide in gold mining. Can you send me as much info as you can? Thank you!! Eileen Hamlin
Miners are from another world than we platers, Eileen; you are aliens to us. But maybe someone will stumble onto your inquiry to help you, just as you came out of space to post on our site.
Dear Reader: please choose what you want to do.
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