电火花-超声复合加工制备微纳空心球的影响因素探讨  

Discussion of the influence of the dielectric fluid on the process of the micro-nano spheres produced by EDM with USM

作　　者：刘南[1] 李翔龙[1] 刘一凡[1] 汪衍涛 

机构地区：[1]四川大学制造科学与工程学院,成都610065

出　　处：《现代制造工程》2013年第11期16-19,共4页Modern Manufacturing Engineering

基　　金：国家自然科学基金资助项目(51275324)

摘　　要：火花放电法是一种新的制备微纳空心球的方法,电火花-超声复合加工制备微纳空心球是在此基础上提出来的。该方法利用超声的空化作用以增加气泡量,增大气泡与抛出电极材料的接触机会,从而达到制备出较多的微纳空心球的目的。基于液体各物理参数对超声空化的影响及电火花加工液的作用进行理论探讨,通过实验对比,初步验证了在该复合加工中介入超声场的可行性,为制订电火花-超声复合加工制备微纳空心球的最终优化设计方案提供了有效的帮助,并为电火花-超声复合加工系统参数的选择提供了理论参考。Spark discharge method is a new preparation method of hollow micro-nano spheres, and then Electrical Discharge Machining （EDM） with Ultrasonic Machining （USM） was put forward. The method utilized the ultrasound cavitation,increasing the amount of bubbles and opportunities in contact with materials that is throwed away from the electrode, thus obtaining many hollow micro-nano spheres. Based on the influence of physical parameters of the liquid on the process of ultrasonic cavitation and roles of the dielectric fluid, the combined machining method added with ultrasonic was proved feasibility by comparative experiments. It offered effective help for the final optimized design scheme preparating hollow micro-nano spheres, and provided theoretical reference for the parameters choice of EDM with USM system.

关 键 词：超声空化 微纳空心球 电火花-超声复合加工 工作液 

分 类 号：TG661[金属学及工艺—金属切削加工及机床]