Micro electrical discharge machining of small hole in TC4 alloy

来源期刊：中国有色金属学报(英文版)2009年增刊第2期

论文作者：李茂盛 迟关心 王振龙 王玉魁 戴立

文章页码：434 - 439

Key words：TC4 alloy; micro electrical discharge machining; deeply small hole; multi-axis micro-EDM machine tool

Abstract: Aiming at machining deeply small holes in TC4 alloy, a series of experiments were carried out on a self-developed multi-axis micro electrical discharge machining (micro-EDM) machine tool. To improve machining efficiency and decrease relative wear of electrode in machining deeply small hole in TC4 alloy, many factors in micro-EDM, such as polarity, electrical parameters and supplying ways of working fluid were studied. Experimental results show that positive polarity machining is far superior to negative polarity machining; it is more optimal when open-circuit voltage, pulse width and pulse interval are 130 V, 5 μs and 15 μs respectively on the self developed multi-axis micro-EDM machine tool; when flushing method is applied in micro-EDM, the machining efficiency is higher and relative wear of electrode is smaller.

基金信息：High-tech Research and Development Program of China