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Applying non-stick teflon coatings to aluminum
(to help readers better understand the Q&A's)
This is one of many threads about non-stick coatings for aluminum. Readers can search the site with additional terms to narrow down to specific questions. Remember that not all non-stick coatings are food safe; it makes a very big difference whether you want the coating on a frying pan vs. a pistol component or a screw.
For the specific question of Teflon-like non-stick coatings on pots and pans, other threads will reveal the need to etch the aluminum so that the surface does not repel the plastic and so that there is sufficient "tooth" for the non-stick coating to have something to grab onto. Visualize pouring liquified Teflon onto a kitchen sponge ... no matter how slippery Teflon may be, if some of it flowed into the nooks & crannies of the sponge before it hardened, it's not coming off :-)
Q. Dear Sir,
I will appreciate very much if you can answer my question: How to make stick-free coating on aluminum surface of different shapes (bars, plates and screws).
Best regards,
Vera Pesic- Nis, Serbia, Serbia & Montenegro
2004
A. Hi Vera. This process is widely used on non-stick aluminum pots and pans, which should be relatively easily transferable to bars, plates, and screws -- although you would need to be mindful that teflon coating screw threads probably affects the dimensions enough to make them non-useable unless they are very large screws.
No! No! No!
Not for Food Service!
Teflon/ Moly Oven Cure Firearm Finish
(affil links)
If you don't need quite that degree of sophistication, after cleaning and pretreatment with chromate conversion coating, the items can be powder coated with nylon or a teflon-like thermoplastic coating in a fluidized bed and further baked for curing.
If this is a do-it-yourself project, and not for food service, you can use coatings like Brownell's teflon-moly spray coats.
Apply several light coats, warming with a hair dryer [on
eBay or
Amazon] in between, and let dry. Then bake at 300 °F for half an hour. Good luck, and get back to us with details on your situation please.
Ted Mooney, P.E.
Striving to live Aloha
finishing.com - Pine Beach, New Jersey
2004
Q. Can you suggest a coating for the case where rubber tires lie on an aluminium plate during manufacturing, and that aluminium plate should be non sticky?
sundaram kumarmanufacturer of cutting tools - Chennai,tamilnadu India
May 22, 2013
May 24, 2013
Hi Sundaram. I think our readers would need to know more about your situation to know whether metallic coatings like hard chrome plating or tungsten nitride would be most appropriate, or whether teflon coating is indicated. Are you dealing with finished tires, or liquid rubber, or warm slabs of rubber. Please tell us about the application. Thanks.
Regards,
Ted Mooney, P.E.
Striving to live Aloha
finishing.com - Pine Beach, New Jersey
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