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White lines after Hardcoat Anodizing

Q. I'm working on an issue where there are uniform white lines around the entire part after hardcoat anodizing. My original thought was its more than likely related to the machining process, but I'm not sure. Has anyone been involved with this type of issue?

Chris R
- Michigan
January 16, 2012

Please come back with the alloy, whether heat treated, ramp time, thickness, free acid, dissolved aluminum, how racked.

Robert H Probert
Robert H Probert Technical Services

Garner, North Carolina

January 18, 2012

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