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Ted Mooney, P.E. RET
Pine Beach, NJ
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for Metal Finishing since 1989
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Masking for HVOF
I am need of reference material concerning masking of parts for HVOF. In particular, I have a shaft with oil ports that I need to cover during application of the HVOF. Is use of urethane plugs viable?
Douglas DustonAir Force, WR-ALC/TINPT - Robins AFB, Ga, USA
2000
2000
NO.
It melts below the temp of HVOF. You might get by with it on a low temp flame spray, but not plasma or HVOF.
There are high temp plugs that will suffice for a single use. You may have to use teflon, but I do not think so.
We have at times rolled flamespray tape up into a cylinder and stuffed that in the hole like a plug. If done well, it works.
James Watts- Navarre, Florida
You can use cast silicone to mask HVOF if you do not have to get closer then 3'' with your gun.
Gregg CaprezIndustrial Tech - Akron, Ohio
September 2, 2011
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