Title: Study on the surface micro-topography in pre-stressed dry grinding process

Authors: Yansheng Deng; Xiaoliang Shi; Shichao Xiu; Minghe Liu

Addresses: School of Mechanical Engineering and Automation, Northeastern University, No. 11-3, Wenhua Road, Heping District, Shenyang, Liaoning, 110819, China ' School of Mechanical Engineering and Automation, Northeastern University, No. 11-3, Wenhua Road, Heping District, Shenyang, Liaoning, 110819, China ' School of Mechanical Engineering and Automation, Northeastern University, No. 11-3, Wenhua Road, Heping District, Shenyang, Liaoning, 110819, China ' School of Mechanical Engineering, Shenyang Jianzhu University, No. 9, Hunnan East Road, Hunnan New District, Shenyang, Liaoning, 110168, China

Abstract: To study the surface micro-topography in pre-stressed dry grinding process, the single grain cutting simulations were carried out in DEFORM-3D, besides, dry grinding experiments were conducted. The residual stress, groove depth and pile-up height were analysed in the simulations. The surface roughness was measured, and micro-surface topography was observed by SEM in the experiments. The results indicated that the application of pre-stress is beneficial to generate more compressive stress, which is beneficial to restrain the generation of surface micro-cracks. Pre-stress can reduce the pile-up height. When pre-stress is within a lower range, the groove depth decreases with pre-stress increasing, however, once pre-stress overcomes a certain value, surface fold appears and surface roughness increases instead. The influence rules of the cutting depth and feeding speed on surface micro-topography in pre-stressed dry grinding process are consistent with them in the traditional grinding process.

Keywords: pre-stressed dry grinding; residual stress; groove depth; pile-up height; surface micro-topography; surface roughness.

DOI: 10.1504/IJAT.2017.089286

International Journal of Abrasive Technology, 2017 Vol.8 No.2, pp.83 - 96

Available online: 09 Jan 2018 *

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