| Search our quarter-million Q&As |
Home of the finishing HOTLINE since 1989
-----Green spots in silver plating
Hello.
I'm working in electroplating processes, specifically with silver plating. We have a big problem with green spots coming out from pieces after the silver plating. We use silver cyanide baths and I think maybe humidity is the problem but we use hot water and dryers. The pieces are made of copper. If anybody has an idea of what's going on, please let me know. Thanks.
Student - San Juan, Puerto Rico
2004
This doesn't sound as much like a student question as an industrial plating shop problem, M. Perhaps you are a co-op student working in a factory? That's fine, it's just that you need to post your real-world situation, not an abstract question that leads us to think you are in a student lab, if we are to be able to help you. For example, if I were to suggest a post-dip in product 'X' as the way to avoid this green discoloration, would you tell me I wasted my time because you can't implement a cycle change in this factory?
Please give us some details of the situation. Thanks.
Ted Mooney, P.E.
Striving to live Aloha
finishing.com - Pine Beach, New Jersey
Need quick confidential answers? $25
Need project assistance? $100/hr.
2003
Sorry! Finishing.com is temporarily Read-Only.
Ted Mooney is retiring but I have several offers to take it over.
We're working hard to make sure we find it the best new home.