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Want to know how to do two-color anodizing
Q. Dear Sirs,
We are the largest and oldest factory for motorcycle alloy rims. Now some customers need double color anodised rims. Although, we have the in-house anodising workshop, we do not know how to do two color anodising.
If any expert can help, we will appreciate it very much.
Best regards
plating shop employee - Shanghai, China
April 27, 2010
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A. Assuming that you are using dye for color, dye the whole part with the lightest color, seal it and then mask off the portion that you need to keep that color. Then give the part a quick dip in a dilute nitric acid tank to break the seal, rinse and dye with the darker color. Rinse very well and then seal. You could try not sealing the part after the first dye and before the masking, but that may depend on what maskant you use is.
If the shape of the part is amenable, you might be able to dye the lighter color, use a mechanical mask/shield and spray dye the darker color. This can be a pain because of the temperature required.
- Navarre, Florida
April 29, 2010
Q. Hi, I'm Nisa from Malaysia. I just want to ask you do you have any idea to do single anodizing with two colors? Should I go for masking? Does masking will give good effect to the second color?
Khairunnisa Abd Ghani- Kota Kinabalu, Malaysia
July 11, 2012
A. Hi Nisa. As you see, we appended your inquiry to a thread which already answers it. If you have further questions, get back to us.
Good luck.
Regards,
Ted Mooney, P.E.
Striving to live Aloha
finishing.com - Pine Beach, New Jersey
July 11, 2012
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