Sound technical content, curated with aloha by
Ted Mooney, P.E. RET
Pine Beach, NJ
The authoritative public forum
for Metal Finishing since 1989
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Avoiding blue sealing blooms
How can I avoid blue sealing blooms after black anodizing and hot sealing , and if I can't avoid how can I remove it without buffing?
Nilay Gholkar- Mumbai, India
2002
A well maintained Nickel Acetate (mid-temp) bath should give satisfactory sealing without the seal smut. Sealing dyed parts in boiling water without any additives is not the way to go, as most dyes will leach out a little bit into your seal bath, thereby contaminating your seal.
Marc Green
anodizer - Boise, Idaho
2002
Hello Nilay,
You need to try to keep a close eye on your dye and nickel seal temp and PH. it is a must. Also you may be keeping you seals to long. Hot water seal change every day or so. Nickel seal, a week or so depending on your work volume. Check with your suppiler.
- Dayton, Ohio
2002
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