聚晶金刚石的电火花加工放电特性研究

Study of Electrical Discharge Machining Characteristics of Polycrystalline Diamonds

在自制的单脉冲放电实验装置上进行了不同材料、不同参数的单脉冲放电实验,并采用数字存储示波器记录下不同情况下的单脉冲放电的电流电压波形数据,经过分析认为,虽然聚晶金刚石电火花加工的放电波形与普通电火花加工非常类似,但在击穿电压、火花维持电压及短路特征波形等方面具有自己的鲜明特征。

Experiments of single pulse electrical discharge of various materials and various parameters were carried out on the Experimental Setup homemade. The values of gap voltage and current waveform were recorded and conserved by the digital storage oscilloscope in the experiments under different conditions. The results consider that,although the discharge waveform of electrical discharge machining( EDM) of Polycrystalline Diamonds is similar to the general EDM,but its breakdown voltage,maintain voltage of spark and characteristics of short circuit waveform are different obviously from that of general EDM.