Home /
T.O.C.
FAQs
 
Good
Books
Ref.
Libr.
Advertise
Here
Help
Wanted
Current
Q&A's
Search 🔍
the Site

World's #1 finishing resource since 1989
No login needed: Chime right in

topic 1899

Nitrite accelerator substitute (sludge free)



1998

we have a problem in using nitrite accelerator in our company... to much sludge is left in our dipping tanks which for us is very infavorable in our routine and in the products we treat... I would like to know more about nitrite accelerator, some alternatives which will have less sludge and other related topics and readings in your magazines.

thanks.

earl celis
millennium multicraft industries inc., angeles city, philippines


1998

Instead of a nirtrite accelerator try a micro zinc phosphate that contains calcium. Try to find a local supplier for zinc-calcium, it is a very stable and easy to handle process.

Sara

sara michaeli
Sara Michaeli sara michaeli signature
chemical process supplier
Tel-Aviv, Israel



1998

I assume your process is a zinc phosphate pre-paint system since you are using nitrite as an accelerator. Several different accelerators are commonly used in industry. these include; nitrites, nitrates, organic nitro-compounds and peroxides. Of these compounds, Sodium nitrite is most commonly used due to cost, its used in small concentrations, and it is self-neutralizing.

Sodium Nitirite not only accelerates the phosphating process, it controls iron build-up by precipitaing it out as sludge and neutralizes the free acid that is released during the precipitation process. Use of other accelerators may cause the free acid to climb.

In phosphating processes other than pre-paint operations, it may be possible to precipitate the iron in a separate tank, therefore minimizing the sludge build-up in the processing tank. Ask your chemical rep about these alternatives or feel free to contact me.

Edward Koneczny
- Birmingham, Michigan


2001

I want to audit 7 tank phosphating process used as a pre treatment to painting process in automobile component medium size work shop. Give me important process audit check list.

INAMDAR SATISH RAMCHANDRA
- PUNE, MAHARASHTRA, 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 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