Effect of machining fluid on the process performance of electric discharge milling of insulating Al2O3 ceramic
Effect of machining fluid on the process performance of electric discharge milling of insulating Al2O3 ceramic
复制标题
加工液对绝缘Al2O3陶瓷放电铣削工艺性能的影响
DOI：
10.1016/j.ijmachtools.2007.12.011
复制
发表时间：
2008-07-01
影响因子：
14
通讯作者：
Li, Q. Y.
中科院分区：
文献类型：
--
作者：
Liu, Y. H.;Ji, R. J.;Li, Q. Y.
Wire electric discharge machining (WEDM) and electrical discharge machining (EDM) promise to be effective and economical techniques for the production of tools and parts from conducting ceramic blanks. However, the manufacturing of insulating ceramic blanks with these processes is a long and costly process. This paper presents a new process of machining insulating ceramics using electrical discharge (ED) milling. ED milling uses a thin copper sheet fed to the tool electrode along the surface of the workpiece as the assisting electrode and uses a water-based emulsion as the machining fluid. This process is able to effectively machine a large surface area on insulating ceramics. Machining fluid is a primary factor that affects the material removal rate and surface quality of the ED milling. The effects of emulsion concentration, NaNO3 Concentration, polyvinyl alcohol concentration and flow velocity of the machining fluid on the process performance have been investigated. (C) 2008 Elsevier Ltd. All rights reserved.
