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Showing posts with label problems. Show all posts
Showing posts with label problems. Show all posts

Wednesday, September 3, 2014

Dull silver plating

Q: My silver plating bath is producing a dull, burned finish, what should I be looking into to get a bright deposit? 

A: Look into the concentrations of the following components: [Ag], [CN], [CO3], and [Brightener]. Different corrective actions should be taken for each component. If any component is too low the obvious recommendation is to add sufficient amounts of that component based on tank size to restore optimal operating conditions. The harder issue is having excessive concentrations of these components. If all components are proportionately high, dilute the bath. However, to fix individual components consider