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Study on the Wire Electrical Discharge Machining of AA 7075 Aluminum Alloy

机译：AA 7075铝合金的线放电加工研究。

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摘要

In the present study, wire electrical discharge machining (wire EDM) behaviors of Aluminum alloy 7075-T6 were investigated and the influence of the wire tension, voltage and peak current on the surface quality were evaluated. Experiments were performed based on the Taguchi L27full factorial experiment design and optimal cutting parameters for surface quality were determined. The mean effect plot and analysis of variance (ANOVA) were used to evaluate the cutting parameters on the machined surface. Experiment results showed that the most efficient parameter on surface roughness was the peak current value. It was observed that aluminum was affected by the electric arc during the wire EDM process and caused the crater formation on the machined surface of the aluminum alloy. The vertical crack connected with non-continuous horizontal crack parallel to the machined surface of the workpiece were seen on the machined surface.
机译：在本研究中，研究了铝合金7075-T6的线电放电加工（钢丝EDM）行为，并评估了线张力，电压和峰值电流对表面质量的影响。实验是基于Taguchi L执行的 27 确定了完整的因子实验设计和表面质量的最佳切削参数。使用平均效果图和方差分析（ANOVA）来评估加工表面上的切削参数。实验结果表明，表面粗糙度最有效的参数是峰值电流值。观察到铝在电线EDM过程中受电弧的影响，并在铝合金的加工表面上导致火山口形成。在加工表面上看到了与工件加工表面平行的非连续水平裂缝连接的垂直裂缝。

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