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<p>In electrochemical discharge drilling, the electrolyte significantly impacts the stability of gap machining, influencing machining efficiency and part quality. The present study uses deionized water, NaOH, Ca(OH)<sub>2</sub> and Na<sub>2</sub>CO<sub>3</sub> with different conductivities as electrolytes. The material removal rate, electrode wear rate, electrode morphology and discharge stability are evaluated to examine the effects of various alkaline solutions on electrochemical discharge drilling. The results show that using Na<sub>2</sub>CO<sub>3</sub> with a conductivity of 2.4&#xa0;mS/cm reduced the electrode wear rate by 36% and increased the material removal rate by 8%. The machined holes exhibited almost no recast layer, minimizing defects and cracks. This study suggests a suitable electrolyte for higher quality drilling.</p>

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Investigation into the influence of different alkaline solutions on the electrochemical discharge drilling properties of nickel-based high-temperature alloys

  • 期刊论文

  • 发表日期：

    2025年9月20日

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  • Yulong Chen,
  • Xiaokang Chen,
  • Ajian Zhang,
  • Qianlong Zhu,
  • Ning Ma,
  • Hai Liu

摘要

In electrochemical discharge drilling, the electrolyte significantly impacts the stability of gap machining, influencing machining efficiency and part quality. The present study uses deionized water, NaOH, Ca(OH)2 and Na2CO3 with different conductivities as electrolytes. The material removal rate, electrode wear rate, electrode morphology and discharge stability are evaluated to examine the effects of various alkaline solutions on electrochemical discharge drilling. The results show that using Na2CO3 with a conductivity of 2.4 mS/cm reduced the electrode wear rate by 36% and increased the material removal rate by 8%. The machined holes exhibited almost no recast layer, minimizing defects and cracks. This study suggests a suitable electrolyte for higher quality drilling.