Home /
T.O.C.
FAQs
 
Good
Books
Ref.
Libr.
Advertise
Here
Help
Wanted
Current
Q&A's
Search 🔍
the Site
pub Where the world gathers for
plating, anodizing, & finishing Q&As since 1989





-----

Electropolished stainless steel is not shiny





2003

Q. Sir

I'm using phosphoric acid (63%), sulfuric acid (15%) for stainless steel electropolishing but shine is not being achieved. Would you like to suggest any inhibitor or any useful material?

Thanks .

M.Javed Nauman
- Punjab, Pakistan



2003

A. I don't think it's a question of lack of inhibitor. Are you getting etching, or no reaction at all? If etching, I believe insufficient current density or water in the solution are the most common problems.

Ted Mooney, finishing.com
Ted Mooney, P.E.
Striving to live Aloha
finishing.com - Pine Beach, New Jersey



The Electrolytic and Chemical Polishing of Metals in Research and Industry
by W.J. Tegart
from Abe Books
or

Affil. Link
Your purchases make finishing.com possible

2003

A. Or the temperature is off, or the jigging is insufficient or it has a chloride contamination or-or-or. Far too little information given.

James Watts
- Navarre, Florida



2003

A. Agree with all of above; also do not use a high alkaline pH cleaner, watch temperature, S.G. not too critical, but keep water out, monitor specific gravity, and if needed raise temp during off production hours to evaporate water -- a fan helps. Very important is that a new bath DOES NOT WORK! It needs to be seasoned and here we still have some of the art of metal finishing left. A new bath needs some iron to work well. A bath can be seasoned by "dummy plating." Iron while necessary to an extent, has an upper limit prescribed for each formulation. Above this level iron will inhibit functions of the bath.

quirt
Jon Quirt
- Minneapolis, Minnesota



2007

A. Try using hydrogen peroxide in your bath because at my company we use this in SS brightener.

Anant Chavan
- Mumbai, India


none
finishing.com is made possible by ...
this text gets replaced with bannerText
spacer gets replaced with bannerImages

Q, A, or Comment on THIS thread -or- Start a NEW Thread

Disclaimer: It's not possible to fully diagnose a finishing problem or the hazards of an operation via these pages. All information presented is for general reference and does not represent a professional opinion nor the policy of an author's employer. The internet is largely anonymous & unvetted; some names may be fictitious and some recommendations might be harmful.

If you are seeking a product or service related to metal finishing, please check these Directories:

 
Jobshops
Capital
Equipment
Chemicals &
Consumables
Consult'g, Train'g
& Software


About/Contact    -    Privacy Policy    -    ©1995-2023 finishing.com, Pine Beach, New Jersey, USA