Influence of discharge energy on EDM ablation

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• 作者：Zhidong Liu ; Xiangzhi Wang ; Zhongli Cao
• 关键词：Electrical discharge machining (EDM) ; EDM ablation ; Microcosmic model ; Energy model ; Discharge pit
• 刊名：The International Journal of Advanced Manufacturing Technology
• 出版年：2016
• 出版时间：March 2016
• 年：2016
• 卷：83
• 期：1-4
• 页码：681-688
• 全文大小：1,375 KB
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• 作者单位：Zhidong Liu (1)
  Xiangzhi Wang (1) (2)
  Zhongli Cao (1)
  
  1. College of Mechanical and Electrical Engineering, Nanjing University of Aeronautics and Astronautics, Nanjing, 210016, China
  2. Jiangsu Key Laboratory of Digital Electrochemical Machining, Changzhou Institute of Technology, Changzhou, 213002, China
  
• 刊物类别：Engineering
• 刊物主题：Industrial and Production Engineering
  Production and Logistics
  Mechanical Engineering
  Computer-Aided Engineering and Design
  
• 出版者：Springer London
• ISSN：1433-3015

文摘

In the process of electrical discharge machining (EDM) ablation, discharge energy can heat the materials, activate the surface, and eliminate metal corrosion. We study the discharge energy by building an ablation machining energy model. We show that in theory, the magnitude of the discharge energy directly determines the processing speed of ablation milling. Based on single-pulse discharge experiments, we observe an exponential increase in the EDM ablation pit diameter with increasing discharge energy. The ablation pit model is built to study the effect of the discharge energy on the ablation pit depth. The effect of discharge energy on the material removing rate (MRR), electrode wear rate (EWR), and surface roughness rate (Ra) of the EDM ablation was studied in this paper. The results show that, on one hand, the material removing rate (MRR) and surface roughness (Ra) have a direct relationship with the discharge energy. On the other hand, the electrode wear rate (EWR) has an inverse relationship with the discharge energy.