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Thread 81/75

Removal of Metal Impurities in Cu Plating Tank

I want to extract Iron, nickel and zinc ions from acid copper plating tank. I have tried to dummy plate such item in low current density (2-5 ASF), but it doesn't work. Could anyone suggest to me for any treatment.

Sylvia So
- Hong Kong
2001
publicly reply to Sylvia So

Practically speaking....cut the bath 25-50%. Low current dummying really isn't practical. Acid Copper can take quite a bit of metallic impurities before it begins to affect the deposit but when it does it is much easier to just decant off a portion. A good idea is to drag the tank bottom daily for parts as the solution will dissolve them rapidly.

Jim Conner
Anoplex Software

Mabank, Texas USA

2001
publicly reply to Jim Conner

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