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Ted Mooney, P.E. RET
Pine Beach, NJ
The authoritative public forum
for Metal Finishing since 1989
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Cleaning an Anodized Part in an Alkaline Cleaner
October 2, 2008
I have a customer who is cleaning anodized parts in a mild alkaline base cleaner. I do not know what it is, But wouldn't the cleaner break the seal and stain the black anodize ? It looks blueish purplish like it is beginning to strip. They said they do this all of the time and it never attacked the anodize.
Thanks Joe A.
L.M.P Ma.
- Waltham, Massachusetts
Any alkali, the stronger the worse, will attack aluminum oxide, hydrated aluminum oxide, and aluminum. weaker is slower, stronger is faster. Dishwashing compounds will slowly degrade anodized finishes.
Robert H Probert
Robert H Probert Technical Services
Garner, North Carolina
October 8, 2008
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