PIV를 이용한 중방식 도장용 에어리스 팁의 분사패턴 분석

Abstract

Heavy duty coating is playing an important role in the field of heavy industry in the development of the shipbuilding and plantindustries. Heavy duty coating has the very important function of protecting steel under serious corrosive conditions. The airless tip used for heavyduty coating is an essential part that determines the spray pattern of the paint. This research investigated the injection properties of three airlesstips(numbers 521, 523, and 525) by using particle image velocimetry(PIV). The velocity and turbulent intensity according to pressure change witheach tip type were investigated by using PIV. If the pressure is greater, the turbulent intensity becomes stronger and the break up of particlesbecomes bigger as the tip number gets smaller. The velocity is the fastest in the center and decreases in the radial direction.