Non stick wear resistant coating
02-20-2012, 11:15 PM,
#1
Non stick wear resistant coating
Hi Folks,

I wondered if anyone had any reccomendations for a non stick wear/abrasion resistant coating ?

Any help would be appreciated

Cheers

Kev
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02-22-2012, 01:17 AM,
#2
RE: Non stick wear resistant coating
Hi KEV non stick against what media? Different applications might use different coatings, and different grinding finishes.

If it is a roll, is there a doctor blade in contact?
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02-22-2012, 01:27 AM, (This post was last modified: 02-22-2012, 01:35 AM by KevGarty.)
#3
RE: Non stick wear resistant coating
Sorry should have really specified that, My apologies

The substrate is a basic steel and the coating would be spray only not ground.

Its just a general enquiry, got a few ideas floating about in my head but just wondered if anyone had any ideas

Cheers

Kev
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02-22-2012, 10:36 AM,
#4
RE: Non stick wear resistant coating
Hi Kev, well still need more information, but some that I have come across are:

AlOx TiOx as sprayed, with a bit of polishing with scotchbrite used as a low friction or non stick for some textile rolls

Arc Spray 420 SS as sprayed for accumulator rolls in the fibre cement industry

Coated and Ground coatings of WC or Ceramics with a Teflon impregnation, or teflon coating afterwards

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02-23-2012, 09:18 AM,
#5
RE: Non stick wear resistant coating
Anyone try spraying teflon on a thermal spray coating? Like Stephen mentioned, I heard of a tough non stick coating, with arc spray stainless, then coated with teflon. Good for cook wear?
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02-23-2012, 09:00 PM,
#6
RE: Non stick wear resistant coating
Teflon is frequently applied over tungsten carbide coatings on large rolls. It is also applied over thermal spray coatings used for cookware. Unfortunately, you are not the first to come up with the idea, but I can tell you, it is a good one. Obviously, there is a market for it.
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02-27-2012, 01:21 AM,
#7
RE: Non stick wear resistant coating
We regularly use teflon coating over as-sprayed HVOF or HVAF tungsten carbide coatings. Common application include steel-mill deflector rolls.

Modern polyurethane coatings are also able to provide excellent wear resistance and non-stick properties in certain applications. Embedded teflon or UHMW particles can provide consistent slip properties even throughout a coating as it wears. An obvious limitation to this type of coating is the operating temperature.


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