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

pub
Free personalized metal finishing help!


Fish eyes in the finished paint



(-----) January 31, 2008

I powder coat flat sheets of steel which are already painted but need to be painted a different colour,the problem is that on some sheets small circles appear where the powder did not adhere to I think there called fish eyes...what causes this problem and how can it be fixed.the sheets are rubbed down before hand using scotch cloth to roughin the surface and clean it.this only happens on pre painted steel sheets.

Ian Purcell
powder coat operator - Ireland
^


February 4, 2008

Ian, this sounds more like starbursting, your kv's are too high and need to be turned down. It will take some experimenting to get the kv's set correctly for a rework. If it is fisheyes, the parts aren't being cleaned well enough, you will need to wipe clean with a chemical. Alcohol works good.

Sheldon Taylor
Sheldon Taylor
supply chain electronics
Wake Forest, North Carolina

^

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    -    ©1995-2022 finishing.com, Pine Beach, New Jersey, USA