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中文摘要：
为了研究静电喷涂过程中油液的电晕荷电特性和雾化现象，利用静电涂油机为试验平台，分析了静电涂油机中梁板电极的电晕放电过程，得到了静电涂油机电晕放电的起晕电压；同时依据静电学原理，给出了液滴在高压静电场中的电晕荷电量和液滴破碎的理论临界场强；结合静电涂油机喷涂试验，从宏观和微观的角度分析了油液的雾化过程。研究表明，随着电压的增大，射流长度总的趋势是减小的，但在不同区域，电压对射流长度的作用不同；雾化角随电压增加而先增大到一定程度后开始减小，最后逐渐趋于稳定；电晕荷电电流随电压的增大而变大；雾滴粒径随电压的增加而减小，当电压在65kV左右时，粒径较小且分布最为均匀，此时油液达到较好的雾化效果。
英文摘要：
To investigate the corona discharge characteristics and oil atomization phenomenon, corona discharge process of beam-plate electrode was analyzed based on the electrostatic spray theory by utilizing electrostatic oiler as experimental platform. Three moments were applied during the spraying, which are products of oil corona discharge, atomization of oil and adsorption to the steel board. Gas ionization of spray in electrostatic oiler is discussed for energy transfer. Inception voltage for corona discharge was calculated in electrostatic oiler, at the same time corona charged quantity and critical break academic electric field intensity were obtained for oil in the high voltage electrostatic field from electrostatics principle. According to the electrostatic spray experiment in electrostatic oiler, oil atomization process was researched from macroscopical and microcosmic visual angles. The result shows that when voltage is higher, jet length become smaller generally, but the effect of jet length for voltage is different in every ar ca. Atomizing angle is reduced after augment earlier with increased voltage and it is stable finally. Corona current is greater as increasing the electrode voltage. The drop particle size becomes smaller as the voltage increases, its optimal atomization effect that particle size is smaller and well-proportioned can be acquired when voltage is 65kV. The conclusion can give better theoretical foundation and experimental gist for designing pioneer electrostatic oiler, moreover, it can gain some approaches for improving utilized efficiency of antirust oil and surface quality of steel board.
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