Electrical Discharge Machining Properties of Insulating Si3N4 Ceramics with Added Al2O3
(0) Several insulating ceramic materials, including natural diamond, have been machined by electrical discharge machining (EDM) using the assisting electrode method that has been proposed by the authors group. The machining properties were affected by the electrical machining conditions and by the physical characteristics of the workpiece. In this paper, to investigate the dependence of the machining properties on amounts of additives, three types of insulating Si3N4 ceramics were machined by sinking EDM and by wire EDM. The material removal rate and the surface roughness were estimated on the EDMed workpiece, and the discharge waveforms were analyzed using the digital oscilloscope. Different dependences on the amounts of added Al2O3 were observed for S-EDM and W-EDM. The machining property of the material removal rate depended on the size of the electrode area for each EDM method.
Insulating sintering ceramics Sinking electrical discharge machining Wire electrical discharge machining
D. Hanaoka Y. Fukuzawa K. Yamashita Y. Kaneko T. Harada
Department of mechanical engineering, Nagaoka University of Technology, Kamitomiokacho, Nagaoka, Nii Advanced research division, Sodic. Co. , Nakamachidai, Tuzuki, Yokohama, Kanagawa, 224-8522, Japan
国际会议
The 16th International Symposium on Electromachining(第16届国际电加工会议)
上海
英文
133-137
2010-04-19（万方平台首次上网日期，不代表论文的发表时间）