Optimization of process parameter of residual stresses for hard turned surfaces
Optimization of process parameter of residual stresses for hard turned surfaces
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DOI：
10.1016/j.jmatprotec.2008.10.011
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发表时间：
2009-05
影响因子：
6.3
通讯作者：
Zhang Xue-ping;Gao Erwei;C. Liu
中科院分区：
文献类型：
--
作者：
Zhang Xue-ping;Gao Erwei;C. Liu
硬态车削因其操作灵活、经济效益高和环境影响小而被公认为磨料加工的替代品。除了这些优点之外，硬车削还可以产生压缩残余应力，从而增加工件的疲劳寿命。本文研究了切削速度、切削深度和进给量等工艺参数对亚表层残余压应力的影响。使用基于田口L9（34）阵列的设计实验，我们在可行空间上改变工艺参数。用X射线衍射法对产生的残余应力进行了检测和评价。使用残余应力越小越好的目标函数，我们确定了最佳的工艺参数。
Hard turning has been recognized as a substitute for abrasive-based processes due to its operational flexibility, economic benefit, and low environmental impact. Besides these advantages, hard turning can induce compressive residual stresses, which increase the fatigue life of the workpiece. In this paper, we investigate the process parameters of cutting speed, depth of cut, and feed rate on inducing subsurface compressive residual stress. Using a designed experiment based on a Taguchi L9(34) array, we varied process parameters over a feasible space. The resulting residual stresses were examined and evaluated by X-ray diffraction. Using the smaller-is-better objective function for residual stress, we then identified the optimal set of process parameters.