Model of Heat and Mass Transfer in Atmospheric Pressure Plasma Arc (APPA) Cleaning Metal Surface
According to analyzing the principle of atmospheric pressure plasma arc (APPA) cleaning metal surface, a model of heat and mass transfer is put forward with using transient-state heat transfer equation about interior heat source and Arrhenius equation of chemical reaction kinetics theory. With finite volume method, the one dimensional control differential equation is transformed into discrete control equation, which is calculated numerically and analyzed with the using of implicit scheme. Taken cleaning lubricant film as an example and analyzed temperature distribution of cleaning film on metal surface, the result indicates that the temperature of film has a strong effect on its removal rate which improves with increasing temperature. In order to both avoid damaging the workpiece surface owing to higher temperature and ensure removal rate of the film, there exists an appropriate temperature under given calculation conditions.
M.K. Lei, X.P. Zhu, K.W. Xu and B.S. Xu
W. J. Xu et al., "Model of Heat and Mass Transfer in Atmospheric Pressure Plasma Arc (APPA) Cleaning Metal Surface", Key Engineering Materials, Vols. 373-374, pp. 408-411, 2008