Home
 
FAQs
 
Good
Books
Ref.
Libr.
Advertise
Here
Help
Wanted
Current
Q&A's
SEARCH🔍
the Site
no_pop_no_spam2

World's top finishing resource since 1989
Chime right in - No login req'd

topic 29036

Does Small Chrome Plating Tank Need Push-Air & Agitation?



2004

Q. I plan to set-up a chrome plating shop soon. The main tank is 2' x 1' wide x 3' deep. The workpiece is typically 1" x 2" x 6" length plate 1 at a time.

Two questions:-

1) Do I need a push-pull exhaust system? If so, what volumetric rate of exhaust? What push and pull air velocity?

2) Do I really need tank agitation? Does it really improve plating quality? If so, in what respects.

Syed Salim
Plating Shop - Kuala Lumpur, Selangor, Malaysia


2004

A. A chrome plating tank needs a lip-mounted exhaust system. Although I am very much an advocate of push-pull exhaust, I'm not sure a push-air system is worth the added complication for a one foot wide tank. 2-sided pull would be ideal, and single sided probably okay. 300-400 CFM would be required.

Air agitation is probably not necessary in this case. In chrome plating its main function is to avoid temperature stratification o deep tanks.

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


2004

A. Hi Syed,

Yes, Ted is right. Airflow? Probably 300 CFM should be OK ... using a lip exhaust hood. Slot design @ 2,000 fpm.

You most certainly don't need push-pull .... that's normally only for very wide tanks.

Please go the finishing.com library for a report on Chrome Ventilation systems' materials. This might help you. Happy Chroming !

freeman newton portrait
Freeman Newton [dec.]
White Rock, British Columbia, Canada

(It is our sad duty to advise that Freeman passed away
April 21, 2012. R.I.P. old friend).



2004

A. Dear /Syed Salim

For chromium plating tank due to this process many gases are evaporated so you must add a very good exhaust system on the tank' you can use polypropylene balls. Add it on the surface of chrome solution; it reduces the rate of vapor about 90% and you can add some chemical compounds to chrome solution to reduce the vapor rate too. About your second point, the chrome tank does not need any agitation. It may need heating or cooling system according to the degree of solution during the work day.

Aly Gomaa
- Cairo, Egypt

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 SEARCH for Threads about ... My Topic Not Found: Start 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    -    ©1995-2021 finishing.com, Pine Beach, New Jersey, USA