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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Aluminium utensils polishing
Q. Hi
I am from India,
doing aluminium utensil manufacturing.
I want to give my product a chrome finish.
Please suggest.
industrialist - India
September 22, 2010
A. Hi, Deepak.
I assume you mean a mirror polish rather than actual nickel-chrome electroplating?
(Please include your town in your response as we now have three Deepak Agarwals from India who post here and it's getting confusing; people get upset when they see their name here on a posting that they didn't author).
Regards,
Ted Mooney, P.E.
Striving to live Aloha
finishing.com - Pine Beach, New Jersey
September 23, 2010
A. If you are looking for a bright shiny finish to the existing material, it has been common practice to run parts in a vibratory machine with porcelain ball media and a good lubricating/polishing compound in a wet process.
AF Kenton
retired business owner - Hatboro, Pennsylvania
September 28, 2010
A. You must be more clear on what you refer to as Utensils and I need to know quantities and sizes to give you the proper answer.
Robin Thede- Toronto, Ontario, Canada
October 18, 2010
How to get chrome like finish on aluminium utensils?
Q. How to get chrome like finish on aluminium utensils?
Currently we are using caustic soda ⇦liquid caustic soda in bulk on
Amazon [affil link]
bath and nitric acid in our process.
- Kolkata India
December 31, 2019
9th Edition, Vol. 5
"Surface Cleaning, Finishing & Coating"
on AbeBooks
or eBay or
Amazon
(affil links)
A. Hi Deepak. Although aluminum will never look like chrome side-by-side (it will be less "blue" and more "white"), it can be quite shiny. Consider doing a nitric-phosphoric acid "bright dip" after manual polishing and before anodizing. You can read a lot about it here by searching the site, but two notes:
- This bright dip is wildly corrosive and it fumes madly -- see it in operation somewhere before you try to install it in your own plant.
- If you want mirror like reflection you must use proper (quite pure) grades of aluminum alloy. ASM Metals Handbook Vol.5 is excellent on this subject of choosing and polishing aluminum alloys for high reflectivity. Good luck.
Regards,
Ted Mooney, P.E. RET
Striving to live Aloha
finishing.com - Pine Beach, New Jersey
December 2019
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