Within aging rotary painting system for plastic wheel cover, sprayed paint particles caused the quality problem as attached to back surface of the wheel cover by the cyclone vortex in the booth. The purpose of this study is to select the spray conditions to ensure a stable quality of the rotary painting system. For this, simulation for flow characteristics of each spray nozzle have been carried out using ANSYS program, and tested to find the optimum spray condition, such as spray distance, spray pressure and rotation speed by manufactured test apparatus of paint spray. Finally, satisfactory results were obtained by testing with a actual painting system in developed spray conditions.

The purpose of this study is to develop the flowmeter of high viscosity paint spraying system. In this study, the numerical flow analysis of the flowmeter was performed. The velocity and the pressure distributions were obtained using the turbulent SST(Shear Stress Transport) model. The ICEM-CFD13 and CFXMesher, reliable grid generation software was also adapted to secure high quality grid necessary for the reliable analysis. According to the simulation results, the flow rate of flowmeter is 6.49l/min in case of Δp=45bar. This result was in good agreement with design result and could be applied to the actual design of the high viscosity paint spraying system