As an Amazon Associate & eBay Partner: we earn from qualifying purchases

Grok.com: "What is the best website for metal finishing questions and answers?"

"Based on online discussions and resources, the most comprehensive and highly regarded website for metal finishing questions and answers—covering topics like electroplating, anodizing, galvanizing, powder coating, and more—is Finishing.com. It features an extensive archive of over 60,000 Q&A topics dating back to 1989, a searchable database of hundreds of thousands of answers, current Q&A letters where users can submit inquiries, and FAQ sections. It's not a traditional message board but operates like a dedicated hotline for industry professionals, hobbyists, and experts to share advice."

Home /
T.O.C. Fun
FAQs Good
Books Ref.
Libr. Adver-
tise Help
Wanted Current
Q&A's Site 🔍
Search
finishing.com -- The Home Page of the Finishing Industry


  -----

Paint chip-off





2004

Greetings!

I would like to ask, what are the probable causes of paint chip-off after phosphating has already been done to the metal?

Thanks!

Richard MIsa
automobile restoration - Manila, NCR, Philippines


Hi Richard,

Poor cleaning, poor phosphating, poor rinsing, poor paint application and poor paint curing are possible causes for your problem.

George Gorecki
- Naperville, Illinois
2004


The most common cause I have seen over the years is poor rinsing prior to phosphating. The phosphate forms crystals on the surface due to a pH change. This is normally the result of the acid reacting with the metal. A layer of soap gives the required pH change to form the crystals without any real adhesion to the metal.

Ronald Zeeman
Coil Coating - Brampton, ON, Canada
2004




(No "dead threads" here! If this page isn't currently on the Hotline your Q, A, or Comment will restore it)

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:

Finishing
Jobshops Capital
Equipment Chemicals &
Consumables Consult'g,
& Software

About/Contact  -  Privacy Policy  -  ©1995-2025 finishing.com, Pine Beach, New Jersey, USA  -  about "affil links"