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Nickel plated Titanium

I am currently trouble shooting our de-nickel tanks that currently de-nickel in about 2-3 hours. We are removing a thin layer of nickel (.0003-.0005in) and I was told in the past that the de-nickeling time was around 45 min. Currently they are not activating the nickel prior to removal and I was wondering if activation would help with the time it took for removal? Also we use a pleated filter instead of the carbon packed filter. Could this be part of the problem... I notice in some prior letters that the carbon filter is the only suggested filter for the nickel process.

Julia Krasovic
Co-op engineer - Cleveland, Ohio
2005

What is your part made of, exactly what is your de-nickel cycle and how old is the tank solution.

James Watts
- Navarre, Florida
2005

The part is made of grade 2 Titanium and the part is blasted, washed with acetone ⇦ this on eBay or Amazon [affil links] Warning! highly Flammable! and spray degreased then rinsed with water. It is then placed in the de-nickel bath consisting of nickel sulphate and boric acid.

Julia Krasovic
- Chardon, Ohio
2005

As for the other part of the question.. As far as I can come up with they have never "changed" the bath. They just keep adding solution to it to bring it back to operating conditions. We are removing the nickel electrolytically also, I forgot to state that earlier. Also, does the nickel content in the bath have an effect on it? I notice that when we fist begin to de-plate the time is long (2-3 hrs) then about half way the denickel time is very short (30 min)and then the time starts to increase again. So apparently something in the bath is changing.

Julia Krasovic
- Chardon, Ohio
2005