Posted by Gordon England on October 06, 2003 at 14:23:00:
In Reply to: Combustion Head posted by Joe on October 02, 2003 at 03:22:04:
: Mr. England, I operate a Jet Kote II unit. We spray mostly Tungsten Carbide coatings. Seems like the combustion head wears out pretty fast sometimes. The four gas holes seem to get worn then it looks like the powder injection hole seems to kind of burn off, resulting in the powder not shooting straight in the middle of the flame, causing the nozzles to load up, causing spits. I realize parameters are the key. I have been using the same parameters for awhile and it usually works great, but some times, with same set up as before it won't. We use Propylene as fuel, oxy, and nitrogen to push the powder. Sometimes when I take the gun loose from the hoses there seems to be a brown liquid on the fuel hose, resembling acetone, how do I prevent this, as I suspect it is the problem? Thanks
Hi Joe
I don't have too much first hand experience with this particular equipment, but it sounds like you are getting problems with drawing liquid propylene. To avoid this you will need to keep your propylene (also propane) cylinders and pipe work from getting too cold. Applying heat to these areas needs careful consideration regarding health and safety. Your gas supplier might be able to help.
Regards Gordon
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