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Abstract：
Enhancing the operational efficacy of electrical discharge machining (EDM) is crucial for achieving optimal results in various engineering materials. This study introduces an innovative solution-the use of coated electrodes-representing a significant advancement over current limitations. The choice of coating material is critical for micro-EDM performance, necessitating a thorough investigation of its impact. This research explores the application of different coating materials (AlCrN, TiN, and Carbon) on WC electrodes in micro-EDM processes specifically designed for Ti-6Al-4V. A comprehensive assessment was conducted, focusing on key quality indicators such as depth of cut (Z), tool wear rate (TWR), overcut (OVC), and post-machining surface quality. Through rigorous experimental methods, the study demonstrates substantial improvements in these quality parameters with coated electrodes. The results show significant enhancements, including increased Z, reduced TWR and OVC, and improved surface quality. This evidence underscores the effectiveness of coated electrodes in enhancing micro-EDM performance, marking a notable advancement in the precision and quality of Ti-6Al-4V machining processes. Among the evaluated coatings, AlCrN-coated electrodes exhibited the greatest increase in Z, the most significant reduction in TWR, and the best OVC performance compared to other coatings and the uncoated counterpart.
摘要：
提高放电加工（EDM）的操作效率对于在各种工程材料中获得最佳结果至关重要。这项研究引入了一种创新的解决方案-使用涂层电极-代表了对电流限制的重大进步。涂层材料的选择对于微细电火花加工性能至关重要，有必要对其影响进行彻底调查。本研究探讨了不同涂层材料(AlCrN，TiN,和碳）在专门为Ti-6Al-4V设计的微细电火花加工过程中的WC电极上。进行了全面评估,关注关键质量指标，如切削深度(Z)，刀具磨损率（TWR），过度切割（OVC），和加工后表面质量。通过严格的实验方法,该研究表明，这些质量参数与涂层电极的实质性改善。结果显示了显著的增强，包括增加的Z，减少TWR和OVC，和改善表面质量。这一证据强调了涂层电极在提高微细电火花加工性能方面的有效性，标志着Ti-6Al-4V加工过程的精度和质量的显着进步。在评估的涂层中，AlCrN涂覆的电极表现出最大的Z增加，TWR的最显著降低,与其他涂层和未涂覆的对应物相比，OVC性能最好。
