finishing.com -- The Home Page of the Finishing Industry

-----

E-coating issue on electrogalvanized material

Hello,

I currently purchase electrogalvanized steel. Once we form it, we send it to an E-coater to be primed. For some reason, once they start the cleaning process, there is a leaf pattern on the metal. We don't know what's causing these leaves marks to show on the metal. Does anyone know?

Lis Ket
buyer - Chicago, Illinois
April 17, 2009

I would guess that they are using an etch primer or a phosphate pretreatment.
It surely sounds more like conventional galvanizing rather than electrogalvanizing since you are seeing a grain pattern that in mega massive. I rather doubt if they could use that much amperage without "burning" the plate.

James Watts
- Navarre, Florida
April 27, 2009

No dead threads! If this page isn't already on the Hotline your Q, A, or Comment will move it there.

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: