An investigation of material removal rate and surface roughness of squeeze casted A413 alloy on WEDM by multi response optimization using RSM
An investigation of material removal rate and surface roughness of squeeze casted A413 alloy on WEDM by multi response optimization using RSM
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DOI：
10.1016/j.jallcom.2016.05.292
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发表时间：
2016-11
影响因子：
6.2
通讯作者：
R. Soundararajan;A. Ramesh;N. Mohanraj;N. Parthasarathi
中科院分区：
文献类型：
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作者：
R. Soundararajan;A. Ramesh;N. Mohanraj;N. Parthasarathi
作为本工作的最后一项工作，还研究了挤压铸造路线生产的新A413合金在最佳条件下通过电火花线切割加工工艺的可加工性。采用响应曲面中心组合旋转设计方法，系统研究了脉冲开启时间、脉冲关闭时间和峰值电流等电火花线切割加工参数对材料去除率和表面粗糙度的影响。方差分析也进行了检查模型的显着性。通过加和性检验，建立了材料去除率和表面粗糙度的数学模型，预测结果在平均误差范围内。采用期望函数法对铸件进行了多目标优化，得到了最优的工艺参数组合，从而保证了铸件的成功加工。验证性实验表明了该方法的有效性。通过对A413铝合金挤压铸造和电火花线切割加工工艺参数的研究，证明了A413铝合金具有较好的铸造性能和加工质量。因此，它被推荐用于所有工业应用，特别是汽车，航空航天。
The machinability study on newly fabricated A413 alloy produced by squeeze casting route under optimal condition through wire electrical discharge machining process are also investigated as final one of the present work. The experiments were systematically carried out by adapting central composite rotatable design approach of response surface methodology to investigate the effect of wire electrical discharge machining parameters such as pulse on time, pulse off time and peak current on material removal rate and surface roughness. Analysis of variance was also carried out to check the significance of the models. The mathematical models were developed to predict the results which are within the limits of agreeable average error for material removal rate and surface roughness through additivity test. Desirability function approach was used to find the optimal parametric combinations for multi-objective optimization and successful machining of the castings. It has been verified by confirmatory experiment to show the efficiency of the proposed method. On the whole, it is stated that the investigation on squeeze casting and wire electrical discharge machining process parameter of A413 alloy have proved the better casting properties and machining quality. Hence, it is recommended for all industrial applications especially automobile, aerospace.