No registration or passwords; no pop-up ads -- just aloha, fun, & answers.
(as an eBay Partner & Amazon Affiliate earns from qualifying purchases).
Home /
T.O.C.
Fun
FAQs
Good
Books
Ref.
Libr.
Advertise
 
Help
Wanted
Current
Q&A's
Site 🔍
Search
pub  Where the
world gathers for metal finishing
Q&As since 1989



-----

Trouble shooting in wall thickness growth in barrel plating




Chrome plating, in barrel there is growth of wall thickness on both ends i.e. top and bottom length of the barrel is around 4.5 feet,1cm dia and top ,0.5 feet should not be plated our trial done.

1. We circulated the solution.
2. We given enough exit of the gass and gassing solution from top.
3. Even after reduce the length of the anode.

Munikrishnan.d
- India
2003


That is a tough part to plate. From the bottom, the anode should be about 2X the diameter higher than the bottom to hold down the heavy plate. Quite possibly 3 diameters. Now the top where you do not want to plate the top 6 inches will have to be masked off if you want no plate. Since the outgassing goes up and will carry charged solution that will plate out, you would have to set the top of the anode about 4 diameters lower than the top edge of what you want to plate. Anode to cathode distance is critical. What are you using? Are you plating the ID or the OD? If you are using tank anodes and plating the OD, You will have to use shields or robbers.

James Watts
- Navarre, Florida
2003




(No "dead threads" here! If this page isn't currently on the Hotline your Q, A, or Comment will restore it)

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  -  ©1995-2024 finishing.com, Pine Beach, New Jersey, USA  -  about "affil links"