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topic 530

Electropolishing the inside of a 12,000 gal stainless tank


We have a reservoir containing chemicals. The surface now has a 30 microinch Ra roughness average and we would like a mirror finish. How would we go about finishing it? Any specific steps? Any wheel should not destroy whatever finish we already have. Thank you.

Laurent S Vesier
- Bear, Delaware

"the opinions are those of the author and not of Rohm and Haas company."


A vessel of this general description can certainly be electropolished to a very fine finish, provided the tank design and mechanical preparation are suitable. We would like to have more details about the specifications required before commenting specifically.

With regards,

Ed Bayha
Metal Coating Process Corporation - Charlotte, North Carolina


Please define the mirror-polished stainless requirement. As mentioned in your post, current surface is at 30 microinch. What would the optimal surface roughness be in microinch that your reservoir required?

If it is already built, electropolishing may be the best way to go about it. Good luck.


Michael Liu Taylor
Michael Liu Taylor
   specialty stainless steel distributor
Dallas, Texas

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