Investigation on the influence of the dielectrics on the material removal characteristics of EDM
Investigation on the influence of the dielectrics on the material removal characteristics of EDM
复制标题
电介质对电火花加工材料去除特性影响的研究
DOI：
10.1016/j.jmatprotec.2013.12.012
复制
发表时间：
2014-05-01
影响因子：
6.3
通讯作者：
Zheng, Chao
中科院分区：
文献类型：
--
作者：
Zhang, Yanzhen;Liu, Yonghong;Zheng, Chao
这项工作对使用各种电介质作为工作流体的放电加工（EDM）工艺的材料去除特性进行了系统、全面的研究。使用五种电介质，包括气态电介质、空气和氧气，以及液体电介质、去离子水、煤油和油包水（W/O）乳液作为工作流体。通过金相方法精确测定了弹坑的整体几何参数，包括弹坑内的重铸材料。对不同电介质中熔化和去除材料的体积以及去除效率进行了比较研究。通过计算机模拟将材料去除特性与不同电介质中放电产生的气泡的演变联系起来，放电点上方的压力似乎是影响材料去除特性的重要因素。这项工作的结果有望有助于进一步阐明电火花加工复杂的材料去除机理。 (C) 2014 Elsevier B.V. 保留所有权利。
A systematical and comprehensive investigation of the material removal characteristics of the electrical discharge machining (EDM) process using various dielectrics as the working fluids was conducted in this work. Five dielectrics, including gaseous dielectrics, air and oxygen, and liquid dielectrics, de-ionized water, kerosene and water-in-oil (W/O) emulsion were used as the working fluids. The whole geometry parameters of the craters, including the recast material in the craters, were precisely determined by metallographic method. The volume of melted and removed material and removal efficiency in different dielectrics were comparatively investigated. By relating the material removal characteristics to the evolution of the discharge generated bubbles in different dielectrics which was done by computer simulation, it seems that the pressure above the discharge point is an important factor that can affect material removal characteristics. The results of this work were supposed to be helpful for further clarifying the complicated material removal mechanism of EDM. (C) 2014 Elsevier B.V. All rights reserved.