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Corrosion after passivation process

Corrosion after passivation process

Corrosion after passivation process

(OP)
Guys,
Any expert can assist me to overcome this problem.
I'm dealing with medical component in where after machining process, the component need to be cleaned from oil & dirt then went for passivation process.
every time I will have a small quantity (after passivation) which is contaminated or yellow stain similar to rust.
What I need to do differently to overcome this problem.

RE: Corrosion after passivation process

Impossible to say with the little information provided. The ultimate choice of passivation method will depend on the acceptance criteria imposed by your customer. http://www.electrohio.com/Finishing/Passivation/Pa...

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