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Ted Mooney, P.E. RET
Pine Beach, NJ
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for Metal Finishing since 1989
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Leaching - Is circulation in pipes needed?
When leaching Nickel, does the chemical (nitric acid) have to circulate through the pipes/parts or can the parts simply soak in a full tank of nitric?
Melissa Burnett- Springfield, OR
2002
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Are you stripping the nickel off the tank? If so, I would at least run the pump for a brief period (5 minutes)to get the nitric in there, as there could be nickel in the pipes. If you are leaching a new tank prior to a bath makeup, just get the nitric in contact with any virgin plastic. Run the pump for a couple minutes, then shut it off for the night. Kevin Keating- Rochester, New York 2002
I can see that some readers believe you are talking about stripping an electroless nickel tank and its piping, whereas I felt you were trying to strip plated parts--so you might want to clarify. But assuming you are talking about parts, I haven't done it, so I can't really say; but I have done somewhat similar things and I believe the answer is going to be empirical rather than scientific. I suspect you'll have to jiggle or agitate the parts but won't have to actually pipe them up and make solution flow through them.  Ted Mooney, P.E. Striving to live Aloha finishing.com - Pine Beach, New Jersey 2002 |
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