Journal
JOURNAL OF MATERIALS PROCESSING TECHNOLOGY
Volume 209, Issue 9, Pages 4286-4291Publisher
ELSEVIER SCIENCE SA
DOI: 10.1016/j.jmatprotec.2008.10.011
Keywords
Hard turning; Hardened bearing steel; Residual stresses; Turning variable; Optimization
Funding
- National Science Foundation of China [50705061]
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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 L-9 (3(4)) 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. (C) 2008 Elsevier B.V. All rights reserved.
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