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<p>To address the issues of excessive chamfering and severe stray corrosion in the fixed cathode electrochemical deburring for micropore drilling (MD-ECD), a simulation model of moving cathode MD-ECD was established, and the changes in current density and their corresponding relationship with material removal rate were analyzed. The results indicate that current density on the surface of burrs characterizes the strength of electrochemical material removal ability. Compared to a fixed cathode, the initial current density at the tip of the burrs under moving cathode conditions is higher, and the current density near the root of the burrs is smaller. A 5 V machining voltage, a 12 % NaNO<sub>3</sub> solution, and a cathode moving speed of 20 µm/s were used to achieve better burr removal effect. The chamfer depth and width after machining were 68 µm and 46 µm, the quality of the pore morphology was significantly improved.</p>

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Research on electrochemical micropore deburring based on moving cathode

  • 期刊论文

  • 发表日期：

    2025年5月30日

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  • Tao He,
  • Chao Li,
  • Qingtian Ding,
  • Chuanli Wang,
  • Mingwen Zhang

摘要

To address the issues of excessive chamfering and severe stray corrosion in the fixed cathode electrochemical deburring for micropore drilling (MD-ECD), a simulation model of moving cathode MD-ECD was established, and the changes in current density and their corresponding relationship with material removal rate were analyzed. The results indicate that current density on the surface of burrs characterizes the strength of electrochemical material removal ability. Compared to a fixed cathode, the initial current density at the tip of the burrs under moving cathode conditions is higher, and the current density near the root of the burrs is smaller. A 5 V machining voltage, a 12 % NaNO3 solution, and a cathode moving speed of 20 µm/s were used to achieve better burr removal effect. The chamfer depth and width after machining were 68 µm and 46 µm, the quality of the pore morphology was significantly improved.