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Ted Mooney, P.E. RET
Pine Beach, NJ
The authoritative public forum
for Metal Finishing since 1989
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Discoloration of Nickel Based Wire Due to Electrolytic Cleaning
2002
We are using two electrolytic cleaners in our wire drawing plant. We have found that some grades of nickel based alloys develop a dark discoloration and even black spots during electrolytic cleaning.
Can anyone explain why?
Graham Payne- Perth, Ontario, Canada
Hi,
What is the Alloying metal? I have cleaned 51/49 Fe/Ni wire in a Electrolytic Degreaser composed of Potassium Hydroxide and Potassium Carbonate without Any problem. Cathodic followed by Anodic for a short duration will solve the purpose.
Good luck ...
Karthik- Singapore
2002
Two things could be happening. One it could be staining, try running at lower temp limit as recommended by vendor. Two, you could be burning, try lower current.
Steve Delaney- Ontario
2002
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