Comparison of Air Caps for Paint Atomizers by Air Volume and Velocity Profile Measurements 970997

A simple method and apparatus have proven useful for examining the quality of air-caps manufactured for paint spray guns. The technique combines accurate measurement of atomizing and fan air volumes, with velocity measurements taken through the axes of the flow pattern downstream of the cap. Initial comparisons of velocity profiles to actual spray patterns indicate that the profile symmetry (or lack of symmetry) correlates well with the resulting geometry of the spray pattern. This paper centers on the variation measured among supposedly identical air-caps. The conclusion proposes a standard method for specification of air-cap performance and manufacturing tolerances which would be beneficial to the finishing industry.


Subscribers can view annotate, and download all of SAE's content. Learn More »


Members save up to 43% off list price.
Login to see discount.
Special Offer: With TechSelect, you decide what SAE Technical Papers you need, when you need them, and how much you want to pay.