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 29345

Surface rust is appearing after only a few days using a water based paint



2004

We are a manufacturer of steel products used in the asphalt paving industry. We have made a change to our dip painting operation. We were using a solvent based bituminous paint and are now using a water based bituminous paint. We never had rusting problems with our steel product using the solvent based paint for up to a year when exposed to weather. We now have a surface rust problem after only a few days when exposed to weather. The steel is heated to approx. 85 degrees before being dipped. The solid content is around 60% The steel does have oil residue in varying degrees. Any suggestions?

William David Demidovich
Manufacturer - Boardman, Ohio


2004

Hi William,

I think the answer to your problem is kind of obvious. Your new water-based paint is not as corrosion-resistant as the old solvent-based material.

You should either go back to the old paint, find a new water-based paint with better corrosion resistance properties, or improve the chemical pretreatment of your parts prior to painting.

George Gorecki
- Naperville, Illinois

none
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