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"Teflon Coating on Aluminum"



Current question:

November 17, 2021

Q. My question is related to Teflon Coatings on aluminum mold surfaces. I am testing a urethane part that is removed from a Teflon coated aluminum tool. Thus far the results are not good. It appears the glass like surface of the molded part prevents good adhesion. If we coat the molded part excessively with a primer we can get fairy good adhesion but this is a wasted step and expensive. So this brings me to my real question if I want to remove a teflon coating from an aluminum surface what would be the best approach? Chemical stripping sounds like it could corrode the aluminum and sandblasting could remove aluminum underneath. Just looking for some advice on if there is a reasonable way to do it == maybe rinse the tool off quickly after a chemical treatment to limit corrosion? Any advice is appreciated.

Phil Grffey
Manufacturing Engineer - Wauseon
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Closely related Q&A's, oldest first:

1998

Q. Can aluminum be Teflon coated for low-friction applications and if so, how do I specify the process? Also, what are some sources? If not Teflon, then are there other dry (non-migrating) lubricant treatments for aluminum? Thank you.

Gary L. Reynolds
- Valencia, California
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1998

A. Many kinds of Teflon can be applied to a few thousands thick. It is a baked product, so you have to make sure that the aluminum does not lose its properties at that temp. Not knowing your application, there is a 50/50 probability that it will not work well for you.

A high dollar option is electroless nickel containing Teflon particles. An excellent product that will stand up to most any desired use.

James Watts
- Navarre, Florida
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1998

A. Gary:

Yes, aluminum can be Teflon coated. It must be anodized or hardcoat anodized first. There is also a dry lube process that can be performed after anodizing.

adv.
If you have any other questions, please feel free to e-mail me.

Regards,

Bob Bramson
B&M Finishers / Prismatic Stainless Steel
supporting advertiser
Kenilworth, New Jersey
b&m finishers banner
^


1998

A. Aluminum can be dry lubricated in a number of ways.

1) Teflon coatings which are cured at 700 °F.

2) Resin bonded dry film lubricants which use PTFE and/or MoS2 with cures from room temperature up to 500 °F.

3) PTFE impregnated anodize or hardcoat. This can also be used as a base for a topcoat of 1 or 2.

Each method has advantages and disadvantages.

adv.
Contact me to discuss further.

Chris Jurey, Past-President IHAA
Luke Engineering & Mfg. Co. Inc.
supporting advertiser
Wadsworth, Ohio
luke banner
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1999

Q. BOB BRAMSON

Where can I get any knowledge about the machine which can coat Teflon or selenium oxide onto aluminium drum?

BULENT «ELDK
plastic film - izmir, turkey
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2001

A. You can Teflon aluminum with DuPont PFA, PTFE, ETFE, TEFLON S, and FEP. All have different properties and different cure temps. It depends on what usage and environment the piece is going to be used for. You also can use Ausimont's Halar ECTFE. Another process could be to anodize, then use Nituff Teflon.

Josh Sonju
Kalispell, Montana, USA
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June 4, 2011

Q. Will deeply appreciate if you know/recommend a product or process to install colorless/transparent 5 to 10 mil Teflon coating inside 4" aluminum tube without changing the high luster of aluminum surface.

Abdullah Kazi
President & CEO - San Jose California USA
^

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Ed. note: We can suggest generic types of products, and process sequences. Sorry, but we can't suggest brands or sources except those of our supporting advertisers ( huh? why?),



September 16, 2012

Q. Dear Sirs,

I was wondering can we coat our aluminum moulds by teflon.

in short, the working conditions of Aluminum mould is continuously on 60 °C, and we are using water based silicone to prevent the adhesion of products into the aluminum mould. And as I was searching the TEFLON Coating, There has an idea come to my mind. I want to ask EXPERTS is it possible to coat teflon on our aluminum molds ?

I'm looking forward to see your comments and help

Thanks a lot

Mehmet Topcu
footwear - Nizip,TR,Turkey
^



February 4, 2013

Q. We are developing a ballhead used for tripod in photography. We would like to have a low friction surface on the ball. The coated ball must be fixed by pressing into a plastic negative surface.
Do you suggest a PTFE coating or something else?
Many thanks,

Laszlo Novak
- Balatonalmadi, Hungary
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February 4, 2013

A. Hi Laszlo. Both surfaces are wear surfaces, so both must be made of materials appropriate for use as wear surfaces.

Saying that the other one is 'plastic' probably doesn't offer enough information, except for me to suggest that the usual best approach is a hard surface against a different and softer surface. So, a bit of a guess, but I think chrome plating, electroless nickel plating, or teflon impregnated hard anodizing would be best for the ball. Good luck.

Regards,

Ted Mooney, finishing.com
Ted Mooney, P.E.
Striving to live Aloha
finishing.com - Pine Beach, New Jersey
^



February 24, 2013

Q. I want a low friction coating on the outside of an aluminum hub [on crankshaft] to resist friction & wear from an outside crankcase seal. Apparently little oil gets there and the seal wore a groove in the old hub. I now have a new hub & seal. I didn't see any of the posts directly applying to my application.
Thanks,

Brian Gavin
- Ann Arbor, Michigan
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July 5, 2013

Q. I am making fusion welding dies for the socket fusion welding of plastic tubes. The dies are aluminum and the dies get to 500 degrees f.

What is the proper Teflon and application process for this coating?

Bob B
- Portsmouth, New Hampshire, USA
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July 12, 2013

A. PTFE, spray, but your application is pretty demanding so some testing and re-application may be needed.

blake kneedler
Blake Kneedler
Feather Hollow Eng. - Stockton, California
^



Applying Teflon to non-anodized aluminum?

WD-40 Dry Lube PTFE Spray


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July 16, 2019

Q. Greetings and thank you for sharing your knowledge!

I'm looking to put a protective coating on a recently resurfaced aluminum platen to prevent recurrence of oxidization. The part is a component of a printing press that can expect temperatures up to 230 °C.

Prior posts in this thread noted that prior to Teflon coating, the aluminum must be anodized. I'm not totally sure, but I don't think this surface is anodized. Any suggestions?

I had been thinking of using something like WD-40 Dry-Lube PTFE

Morgan Chivers
- Arlington, Texas USA
^

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