Scholarlink

<p>Manufacturing sectors pose significant challenges in producing microholes and microslots using unconventional methods. Electrochemical micromachining process is the key manufacturing process in the aerospace and automobile industries to produce microholes and microgeometries with high aspect ratio and good accuracy. In this research, the use of variant electrolytes, namely sodium nitrate (NaNO<sub>3</sub>), acidified sodium nitrate, and ethylene glycol-mixed sodium nitrate (EG+ NaNO<sub>3</sub>), in the electrochemical micromachining process for machining A286 superalloy material was investigated. The findings suggest that the non-aqueous EG+ NaNO<sub>3</sub> electrolyte outperforms aqueous NaNO<sub>3</sub> and acidified NaNO<sub>3</sub> electrolytes, demonstrating better material removal rate (MRR) and reduced overcut. Among the chosen parameter levels, 10&#xa0;V, 45% duty cycle (DC), and 25&#xa0;g/L electrolyte concentration (EC) resulted in higher MRR, while 10&#xa0;V, 55% DC, and 15&#xa0;g/L EC led to lesser radial overcut. Besides, sodium nitrate (NaNO₃) electrolyte alone results in higher by-products, lower dissolution efficiency, and greater overcut. The non-aqueous EG+ NaNO<sub>3</sub> electrolyte mixture proved to be the most effective and an eco-friendly electrolyte, achieving superior surface quality with minimum average surface roughness of 0.916&#xa0;µm and the smallest radial overcut of about 0.178&#xa0;mm. Furthermore, the anodic dissolution behaviour strengthens the effectiveness of EG+ NaNO<sub>3</sub> electrolyte in generating microholes with high accuracy.</p>

错误：搜索内容不能为空，请输入英文关键词
错误：关键词超出字数限制，请精简
高级检索

Optimizing Electrolytes and Understanding Dissolution Behaviour for Enhanced Electrochemical Micromachining of A286 Superalloy

  • 期刊论文

  • 发表日期：

    2025年1月24日

查看全文
  • E. Rajkeerthi,
  • P. Hariharan

摘要

Manufacturing sectors pose significant challenges in producing microholes and microslots using unconventional methods. Electrochemical micromachining process is the key manufacturing process in the aerospace and automobile industries to produce microholes and microgeometries with high aspect ratio and good accuracy. In this research, the use of variant electrolytes, namely sodium nitrate (NaNO3), acidified sodium nitrate, and ethylene glycol-mixed sodium nitrate (EG+ NaNO3), in the electrochemical micromachining process for machining A286 superalloy material was investigated. The findings suggest that the non-aqueous EG+ NaNO3 electrolyte outperforms aqueous NaNO3 and acidified NaNO3 electrolytes, demonstrating better material removal rate (MRR) and reduced overcut. Among the chosen parameter levels, 10 V, 45% duty cycle (DC), and 25 g/L electrolyte concentration (EC) resulted in higher MRR, while 10 V, 55% DC, and 15 g/L EC led to lesser radial overcut. Besides, sodium nitrate (NaNO₃) electrolyte alone results in higher by-products, lower dissolution efficiency, and greater overcut. The non-aqueous EG+ NaNO3 electrolyte mixture proved to be the most effective and an eco-friendly electrolyte, achieving superior surface quality with minimum average surface roughness of 0.916 µm and the smallest radial overcut of about 0.178 mm. Furthermore, the anodic dissolution behaviour strengthens the effectiveness of EG+ NaNO3 electrolyte in generating microholes with high accuracy.