针状电极静电雾化机理与实验研究  

Mechanism and Experimental Research

作　　者：马浩 杨敏 MA Hao;YANG Min(School of Mechanical and Automotive Engineering,Qingdao University of Technology,Qingdao Shandong 266520,China)

机构地区：[1]青岛理工大学机械与汽车工程学院,山东青岛266520

出　　处：《佳木斯大学学报（自然科学版）》2024年第3期84-87,共4页Journal of Jiamusi University：Natural Science Edition

基　　金：山东省自然科学基金(ZR2020ME1)。

摘　　要：为改善微量润滑切削加工中微液滴飞移飘散、切削液利用率低等技术问题,探讨针状电极高压电场对微液滴粒径变化和粒径分布的影响规律。结合润滑剂荷电特性和针状电极电场分布特征建立锥射流雾化模型,并利用数值分析软件对模型进行求解,设计静电雾化效果观测实验以验证针状电极锥射流雾化机理。研究结果表明,雾滴粒径随气压和电压的升高均出现降低的趋势,在0.1 MPa时粒径细化最为明显,总体降低了34.67%,同时分布跨度R.S值降低了20%,实验结果与雾化模型计算值基本符合,三种气压条件下,随着电压升高PM10和PM2.5百分比浓度也有不同程度的降低。因此,高压电场对雾滴粒径具有明显的细化作用,还能明显抑制PM10和PM2.5细小颗粒的产生。In order to improve the technical problems of micro-droplet drift and low utilization rate of cutting fluid in minimum quantity lubrication machining,the influence law of high voltage electric field of needle electrode on the change of micro-droplet particle size and particle size distribution is explored.The model of cone jet atomization is established by combining the characteristics of lubricant charge and electric field distribution of needle electrode,and the model is solved by numerical analysis software,and electrostatic atomization effect observation experiment is designed to verify the mechanism of cone jet atomization of needle electrode.The results show that the droplet size decreases with the increase of air pressure and voltage,and the particle size refinement is most obvious at 0.1 Mpa,with an overall decrease of 34.67%,and the distribution span R.S value decreases by 20%,which is basically consistent with the calculated value of the atomization model.Under three different pressure conditions,the percentage concentrations of PM10 and PM2.5 also decrease to varying degrees as the voltage increases.Therefore,the high-voltage electric field has a significant refining effect on the particle size of fog droplets,and can also significantly suppress the production of PM10 and PM2.5 fine particles.

关 键 词：静电雾化 微量润滑 针状电极 锥射流 多场赋能。 

分 类 号：TG543[金属学及工艺—金属切削加工及机床]