What is the relationship between the temperature of the finishing material
and the temperature of the air when spraying? When the product I used is
warmed to 70 but the environment I spray in is at 50 and my gun just doesn't
work well why?.
Assuming you mean the gun itself isn't working as well (as opposed to the
application not working well), it's because the atomized spray exiting the
nozzle is too cold at 50 degrees. When pressure is released, as in air
exiting a paint guy nozzle, cold is generated. It's the same principle that
makes and air conditioner make cold - going from hi pressure to lo pressure
So, the paint is exiting at a lower temperature in 50 degree air,
becauswe of the valve assy temp affect on the paint, and atomization is not
as complete, as oppposed to the 20 degree increse of having the air temp at
70 degrees. Technically there's much more to it, such as oxidation rates at
temps, voc, particle sizes, nozzled designs, etc etc., but them's the
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