使用深冷处理电极对 Ti64 进行放电加工的腐蚀率调查和多目标优化

IF 2.4 Q2 ENGINEERING, MULTIDISCIPLINARY
Bibin K. Tharian, P. B. Dhanish, R. Manu, Ankit D. Oza, Kirtanjot Kaur
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引用次数: 0

摘要

由于其固有特性,Ti64 在使用传统加工工艺进行加工时给工业带来了许多挑战。从经济和环境角度考虑,Ti64 的传统加工方法并不可行。电火花加工(EDM)等非常规技术是加工 Ti64 的有前途的方法,尽管存在刀具磨损较大和加工率较低等挑战。本文研究了使用深冷处理电极加工 Ti64 时的侵蚀率。峰值电流 (Ip)、脉冲导通时间 (Ton) 和间隙电压 (Vg) 被用作研究侵蚀率(即材料去除率 (MRR) 和刀具磨损率 (TWR))的控制参数。实验按照基于 RSM 的中央综合设计 (CCD) 进行规划。考虑到当前问题的多目标性质,我们采用了灰色关系分析法(GRA),以找到同时满足材料去除率(MRR)和刀具磨损率(TWR)的单一参数条件。结果发现,峰值电流[公式:见正文][公式:见正文]A、脉冲接通时间[公式:见正文][公式:见正文]s 和间隙电压[公式:见正文][公式:见正文]V 是最佳设置,分别为[公式:见正文][公式:见正文]mm3/min 和[公式:见正文][公式:见正文]mm3/min。此外,还使用 SEM、XRD 和 3D 光学轮廓测量技术对电火花加工表面进行了形貌分析,以确定表面特征,并研究加工表面形成其他金属间化合物的可能性。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Erosion rate investigation and multi-objective optimisation on electrical discharge machining of Ti64 using deep cryo-treated electrodes
Due to its inherent properties, Ti64 has set many challenges in industries during its machining using conventional machining processes. Traditional machining of Ti64 is not a feasible option considering the economic and environmental perspectives. Non-conventional techniques like electrical discharge machining (EDM) are promising methods for machining Ti64 despite challenges like higher tool wear and lower machining rates. The current paper investigated the erosion rates while machining Ti64 using deep cryo-treated electrodes. The peak current (Ip), pulse on time (Ton) and gap voltage (Vg) were used as control parameters while investigating erosion rates, viz., Material Removal Rate (MRR) and Tool Wear Rate (TWR). Experiments were planned according to the RSM-based Central Composite Design (CCD). Considering the multi-objective nature of the current problem, Grey Relational Analysis (GRA) has been incorporated to find a single parametric condition that will satisfy both MRR and TWR. Peak current, [Formula: see text][Formula: see text]A, Pulse On time, [Formula: see text][Formula: see text][Formula: see text]s and Gap voltage, [Formula: see text][Formula: see text]V was found to be the optimal setting giving [Formula: see text][Formula: see text]mm3/min and [Formula: see text][Formula: see text]mm3/min. Furthermore, topographical analysis of the EDMed surfaces has been performed using SEM, XRD and 3D optical profilometry techniques to characterise the surface and to investigate the possibility of other intermetallic compounds formed on the machined surface.
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