Have you ever powder coated parts with inside corners or
complex geometries? If so, it is likely
that you have struggled with the Faraday cage effect. For those of you who have
not, the Faraday cage is like an invisible electrical shield that prevents
charged powder particles from reaching internal corners and recesses. If the
powder particles cannot reach these areas, then the part will not be completely
coated, which will result in poor coating performance and most likely premature
corrosion.
Contributing Factors
to Faraday Cage- Edges build quickly and can back-ionize before recesses can coat
- Corona charging creates strong electric fields
- Edges offer the least amount of resistance
- Electric fields follow the paths of least resistance
- Charged particles follow with lines of force
- The less the distance the more the attraction
Look for Faraday Cage (part 2) next on - Overcoming the Faraday Cage Effect
For more information on the Faraday cage effect, read TCI's Troubleshooting
Guide.
Or contact
us today to speak with one of our
professional service technicians. We can help you with Faraday Cage questions
or any of your powder coating needs.
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