Influence of Machining Parameters and Pre-Stress on Residual Stress of Pre-Stress Hard Turning in 40Cr Steel

Abstract:

Machined residual stress is an important index in machining quality, and pre-stress cutting is a process which can increase the residual compressive stress on machined surfaces. This paper investigated the effect of machining parameters and pre-stress on residual stress of 40Cr steel by orthogonal experiment. The experiment results also showed that pre-stress could increase the residual compressive stress effectively, and it had obvious significance for residual stress than those significances of machining parameters; ap had more obvious affect on the residual stress than vc and f have, and residual compressive stress decreased with the increase of ap, vc and f. A prediction formula for residual stress of pre-stress hard turning was obtained from the experiment results and it was verified reliable by other experiment.

• Periodical: Applied Mechanics and Materials (Volumes 157-158)
• Pages: 400-405
• DOI: https://doi.org/10.4028/www.scientific.net/AMM.157-158.400
• Online since: February 2012
• Authors: Ai Dong He, Bang Yan Ye, Meng Yang Qin
• Keywords: 40Cr Steel, Machining Parameters, Pre-Stress Hard Turning, Residual Stress

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