| Search our quarter-million Q&As |
Home of the finishing HOTLINE since 1989
-----Phosphate primer
Q. I would like to know if this phosphate treatment is necessary for powder coating parts? Should this process be done only on metal or can it also be used on aluminum as well?
Rocky Lane HoneycuttPOWDERCOATING & BLASTING - Woodleaf, North Carolina, USA
A. Phosphate coating is recommended as a pretreatment for powder coating as it would help improving the adhesion of the powder coating on the substrate.
Phosphate coating can be deposited on steel as well as aluminum.
T.S.N. Sankara Narayanan
- Chennai, Tamilnadu, India
(ed.note: The good doctor offers a fascinating blog, "Advancement in Science" )
A. Necessary is a relative term. How good a product do you want to sell? If you want to stay in business, you will phosphate it. If not, be cheap and skip it.
James Watts- Navarre, Florida
A. Hi. Phosphating should be the minimum. Better is chromate conversion coating, although a zinc chromate primer
⇦ on
Amazon (affil link)]
is an inexpensive and good step before powder coating.
Luck & Regards,
Ted Mooney, P.E.
Striving to live Aloha
finishing.com - Pine Beach, New Jersey
Need quick confidential answers? $25
Need project assistance? $100/hr.
Sorry! Finishing.com is temporarily Read-Only.
Ted Mooney is retiring but I have several offers to take it over.
We're working hard to make sure we find it the best new home.