Prediction of PCM Temperature During Oven Drying Process using Numerical Analysis

摘要

Paint coating process on steel sheet has to be carried out for producing prepainted steel sheet by continuous process. After coating process, drying processes are needed. Temperature control of oven system directly affects on the product quality, such as, a coherence of coating and state of surface. In this study, heat transfer coefficients were calculated by 3-dimensional heat flow analysis from hot wind of nozzle to steel sheet and values of PMT(Peak Metal Temperature) of steel sheets were predicted by adapting that value to 2-dimensional analysis and using the coefficients. Conditions of numerical analysis were obtained from orthogonal arrary which is known as Taguchi method. Coefficients of heat transfer coefficient equation were derived from the second order regression model. By comparing numerical analysis with experimental results, the accuracy of numerical analysis was verified. Moreover we analyzed the effect of various conditon of factors, such as velocity and thickness of steel sheet, temperature of hot wind and the type of steel sheet.