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Letter 16047
Avoiding blue sealing blooms
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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
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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.
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Marc Green
anodizer - Boise, Idaho
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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.
Dwayne Conley
- Dayton, Ohio
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