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





-----

Anodizing dye tank has a scum on it





October 16, 2012

Q. I have been searching for an answer to a question pertaining to red anodizing dye. I had noticed a scum has formed on the top of my dye. Is this still good to use? Finding the scum tells me my container is not air tight, so I am wondering if this will affect the dye in any way.
Thank you

Tanya Downey
- Bassano, Alberta, Canada



October 17, 2012

A. Tanya

The 'scum' could be algae. Check with your supplier for recommendations on how to prevent it from occurring. Some dyes require an elevated minimum temperature to prevent the formation of such.

I would think it would still be good for most uses, although I would filter and/or skim first. You could always send a sample to your supplier for analysis.

Willie Alexander
- Colorado Springs, Colorado



October 24, 2012

A. Some dye baths will grow mold which can be picked up by the anodized aluminium where it will act as a resist and prevent build-up of dyestuff on the affected areas. You can skim the mold off of the top and some dyes will allow you to raise the temperature around 90 °C to kill most of the mold spores.

Scott Merritt
- Eastman, Georgia, USA




Fungus in brown dye

May 31, 2017

Q. I work in an anodizing shop and our brown dye, Sanodure aluminum olive brown r2, is constantly foaming. It's the worst of all the dyes. I've been told it's due to a fungal growth in the tank. But even after draining, cleaning, and rebuilding, it has remained foamy. Any help is greatly appreciated. Thank you.

Justin Perry
Anodizer - Jackson, Michigan

Sorry, this RFQ is outdated, but technical replies are welcome. No public brand/source suggestions please ( huh? why?) 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