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http://dx.doi.org/10.14773/cst.2015.14.2.59

A study on the erosive wear of spray tip nozzle by epoxy primer paint impingement and the spraying characteristics  

Kim, Jinuk (Daewoo Shipbuilding & Marine Engineering CO.,LTD.)
Cho, Yeon-Ho (Daewoo Shipbuilding & Marine Engineering CO.,LTD.)
Cheon, Je-Il (Daewoo Shipbuilding & Marine Engineering CO.,LTD.)
Han, Myoung-Soo (Daewoo Shipbuilding & Marine Engineering CO.,LTD.)
Publication Information
Corrosion Science and Technology / v.14, no.2, 2015 , pp. 59-63 More about this Journal
Abstract
Airless spray which is widely used for painting to ship blocks and hull sides is the coating method for attaching atomized paint material to the substrate using spray tip nozzle with compressed air. When the paint material which has high solid contents such as epoxy primer paint is atomized by passing through spray tip nozzle with high pressure, the nozzle composed of tungsten carbide(WC) undergoes the erosive wear, leading to widening of nozzle hole. The deformation of nozzle hole induces improper spray pattern and coating failures such as finger pattern and sagging because the conditions of spray pump pressure and paint flow rate for developing full spray pattern are changed. In this study, an appropriate replacement cycle of spray tip was predicted by measuring the erosive wear tendency as increasing the spraying time of epoxy primer paint.
Keywords
painting; airless spray; epoxy primer; spray tip nozzle; erosive wear;
Citations & Related Records
Times Cited By KSCI : 1  (Citation Analysis)
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