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Nickel Sulfamate Plating Inquiry

December 21, 2009

Sir,

I don't have much experience in Ni Sulfamate plating, that is why I would like to seek an idea. Basically, our product is exhibiting POROSITY after the plating. I followed the parameters written in the technical data sheet of the chemical. However, still there's an occurrence of POROSITY scattered in an entire plating area. Still, we are doing simulations in order to determine the root cause. But still, I am asking for help to those have wide experienced in Ni Sulfamate Plating.

Thank you!

Dante M. Ciudad Jr.
production plating engineer - Dubai, UAE

Hi, Dante. My first guess is that the parts aren't truly clean.

Regards,

Ted Mooney, P.E.
Striving to live Aloha
finishing.com - Pine Beach, New Jersey
December 21, 2009

Dante,

I tend to agree with Ted that it sounds like a pre-cleaning issue. One other thing to consider is whether the plating is wetting out sufficiently. If not you may need to add a wetting agent.

Brian Terry
Aerospace - Yeovil, Somerset, UK
December 23, 2009

Dante, If you tell us exactly what you are doing and what your bath parameters are, we can stop guessing and maybe answer your problem.

Trevor Crichton
R&D practical scientist
Chesham, Bucks, UK
December 27, 2009

Dear Anyone,

We are just starting having a nickel sulphamate plating in our company. I build up the solution in accordance to what is written in the technical data sheet of the chemical. I also followed other instructions stated there, however, after a series of trials, still I'm encountering POROSITY on the item. Please give me some corrective actions on this problem.

Dante Ciudad
plating company employee - Dubai, UAE
December 30, 2009

December 30, 2009

What is your process, including concentrations, times, temperatures and amps per sq ft.

Are you using air agitation and is it oil free?

How are you checking your anti pit?

Will your parts pass a water break test after cleaning?

Are these pits all over or just on the top or bottom of the part as it is racked?

Look at your pits with a good light and with about 10 power magnification and tell us what you see.

Pictures would be of help.

James Watts
- Navarre, Florida

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