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-----Anodize parts being tacky
What would cause parts to have a tacky feeling after they were supposedly dried and what would cause the powdery residual after they have been anodize. Metals predominate used are 2024-T3, T4, and T351; 7075 T6 ; 6061 T6
Cindy CarrascoQuality Control Inspector - Kingston, Washington, USA
August 19, 2008
August 19, 2008
Hi, Cindy. Probably poor sealing. It's a common theme: Letters
26372,
34094, and
6811 have interesting discussions on this, and you can find still more with the search engine. Good luck.
Regards,
Ted Mooney, P.E.
Striving to live Aloha
finishing.com - Pine Beach, New Jersey
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Cindy
To take Ted's response a step further, some anodize coatings are required/specified to be sealed, while others are required/specified to be unsealed. Properly sealed coatings will not exhibit the stickiness you mention, while unsealed or inadequately sealed coatings will. A sticky coating does not necessarily mean poor sealing.
- Colorado Springs, Colorado
August 20, 2008
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