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首页> 外文期刊>Proceedings of the institution of mechanical engineers >Analysis of electrochemical behavior on micro-drilling of cast hybrid Al/(Al_2O_(3p) + SiC_p + C_p)-MMC using micro-ECM process
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Analysis of electrochemical behavior on micro-drilling of cast hybrid Al/(Al_2O_(3p) + SiC_p + C_p)-MMC using micro-ECM process

机译：微型ECM工艺分析铸造杂化Al /（Al_2O_（3p）+ SiC_p + C_p）-MMC的电化学行为

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摘要

This paper presents the results of an experimental investigation on machining of micro-hole during electrochemical micromachining (ECMM) of stir-cast hybrid aluminum/(alumina+silicon carbide+carbon particulates) metal matrix composite. An ECMM set-up was developed and utilized for carrying out the experimental investigation. The supply current (Ip), supply voltage (v), pulse-on time (Ton), pulse-off time (Toff), electrolyte concentration (EC), and electrolyte flow rate (FR) were selected as process parameters. The effect of process parameters on material removal rate (MRR), electrode wear rate (EWR), surface roughness height (SR), taper cut (TC), over cut (OC), and micro-spark-affected zone (MSAZ) were analyzed through various graphs. The surface characteristics of the micro-drilled holes were analyzed using energy dispersive X-ray spectroscopy and scanning electron microscope techniques. Experimental results revealed that the MRR, EWR, TC, OC, and MSAZ increase with an increase in supply current, voltage, and pulse-on time. The optimal parametric combination for high MRR with low TC, OC, and MSAZ was found at 1.5A supply current, 13V supply voltage, 10 mu s pulse-on time, 10 mu s pulse-off time, 15g/L electrolyte concentration, and 0.2L/min electrolyte flow rate.
机译：本文介绍了在搅拌铸造铝/（氧化铝+碳化硅+碳微粒）金属基复合材料的电化学微加工（ECMM）过程中加工微孔的实验研究结果。开发了ECMM装置并将其用于进行实验研究。选择供应电流（Ip），供应电压（v），脉冲接通时间（Ton），脉冲断开时间（Toff），电解质浓度（EC）和电解质流速（FR）作为工艺参数。工艺参数对材料去除率（MRR），电极磨损率（EWR），表面粗糙度高度（SR），锥切（TC），超切（OC）和微火花影响区（MSAZ）的影响通过各种图表进行分析。使用能量色散X射线光谱法和扫描电子显微镜技术分析了微钻孔的表面特征。实验结果表明，MRR，EWR，TC，OC和MSAZ随着电源电流，电压和脉冲接通时间的增加而增加。在1.5A电源电流，13V电源电压，10μs脉冲接通时间，10μs脉冲断开时间，15g / L电解液浓度和1.5A电源电流下发现了高MRR，低TC，OC和MSAZ的最佳参数组合。电解质流量为0.2L / min。

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