添加Al2O3的绝缘Si3N4陶瓷放电加工

D. Hanaoka, Y. Fukuzawa, Y. Kaneko, T. Harada
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引用次数: 1

摘要

绝缘陶瓷材料的电火花加工可以采用辅助电极方法,用凹式或线状电火花加工机床和导电材料进行加工。在这种加工过程中,导电碳和碳化物产品在放电过程中粘附在工件表面。层的特性受电加工条件和工件物理特性的影响。通常,SEDM和WEDM的加工条件有很大的不同。为了研究SEDM和WEM在Si3N4陶瓷加工性能上的差异,通过改变Al2O3的添加量和工具电极的尺寸进行了几项实验。对电火花加工后工件的材料去除率和表面粗糙度进行了估计。利用数字示波器对放电波形进行了观测,并利用所设计的程序进行了分析。考虑工件结构和电极直径,分析了电极的加工性能。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Discharge Machining of Insulating Si3N4 Ceramics with added Al2O3
Insulating ceramic materials can be machined by electrical discharge machining (EDM) using the assisting electrode method with a sinking or wire EDM machine and electrically conductive material. In this machining process, electrically conductive carbon and carbide products adhere to the surface of the workpiece during discharge. The characteristics of the layer are affected by the electrical machining conditions and the physical characteristics of the workpiece. Typically, the machining conditions for SEDM and WEDM are very different. In this paper, to investigate the difference in the machining properties of SEDM and WEM, several experiments were carried out by varying the amount of Al2O3 added to the Si3N4 ceramics, and the size of the tool electrode. The material removal rate and the surface roughness were estimated for workpieces following EDM. Discharge waveforms were observed with a digital oscilloscope and analyzed by using the designed program. Machining properties were analyzed by considering the structure of the workpiece and the electrode diameter.
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