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







-----

13.5 pH requirement for Seal on Anodizing



April 3, 2012

Q. We are hearing a lot requests for bumping the seal requirement on Aluminum Anodizing up to 13.5 pH. I have heard that someone in Germany/Europe is meeting this requirement but I have not found anyone in the states who can supply a seal additive to meet this requirement. Does anyone know if someone is producing a seal that will meet this in the US?

Bryant Tokarz
- Murfreesboro, Tennessee, USA



April 11, 2012

A. I would consider sealing systems which use nickel fluoride impregnation sealing rather than hydrothermal (boiling water or steam) sealing. These processes are often called "cold sealing". One of the problems that arise from using them is the great difficulty in stripping defective coatings in the normal stripper, sodium hydroxide - a property you are seeking.

harry_parkes
Harry Parkes
- Birmingham, UK


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