what chemical is needed to remove anodized coating?
03-01-2006, 07:44 PM
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anodize is an anodic coating of either chromic acid or more commonly sulphuric acid and water. Caustic soda is used to strip it. Anything with a high ph will do it but make sure you rinse very well because whatever high ph you use to strip the anodize will attack the aluminum. perfect world would be a caustic (high ph) strip then neutralize in a mild nitric acid and water mix.
03-01-2006, 07:52 PM
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Originally Posted by topless99
anodize is an anodic coating of either chromic acid or more commonly sulphuric acid and water. Caustic soda is used to strip it. Anything with a high ph will do it but make sure you rinse very well because whatever high ph you use to strip the anodize will attack the aluminum. perfect world would be a caustic (high ph) strip then neutralize in a mild nitric acid and water mix.
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03-01-2006, 10:33 PM
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Originally Posted by topless99
anodize is an anodic coating of either chromic acid or more commonly sulphuric acid and water. Caustic soda is used to strip it. Anything with a high ph will do it but make sure you rinse very well because whatever high ph you use to strip the anodize will attack the aluminum. perfect world would be a caustic (high ph) strip then neutralize in a mild nitric acid and water mix.
03-02-2006, 05:06 AM
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What exactly are you trying to strip? How big? If you have any plating shops in your area it takes about 1 minute to strip and neutralize anodized aluminum. You should be able to walk in get stripped and walk out very cheap. If you are doing large parts I think it would be well worth it. I used to do this for people all the time when I was running a plating/anodizing shop.
