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Hot spots in titanium anodizing




I've been experiencing some hot spots approximately .025 diameter on my titanium turbine blade. This hot spots appeared in an area where it is masked during the anodizing process. When we section out the blade. the burned areas seem to comes from some kind of an electrical arcing. The thickness of the blade is .050. Can this hot spot come from the anodizing process?

Please help.

Richard
- San Diego, California, USA
2003


You are going to have to bare some of the corporate soul here. A set of pictures is worth a thousand words. What is the blade alloy and what is the anodizing process (each step). A picture of racked parts would be nice. For privacy, you very probably will have to hire a consultant.

James Watts
- Navarre, Florida
2003




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