Realisation of grinding-hardening in workpieces of curved surfaces—Part 1: Plunge cylindrical grinding |
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Authors: | Thai Nguyen L.C. Zhang |
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Affiliation: | School of Mechanical and Manufacturing Engineering, The University of New South Wales, NSW 2052, Australia |
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Abstract: | This paper investigates the feasibility to achieve grinding-hardening in a plunge cylindrical grinding process. To understand the mechanisms, a temperature-dependent finite element heat transfer model incorporating a triangular moving heat source was developed to describe the temperature field, thus to predict the thickness of the grinding-hardened layer. The analysis carried out included the variation effect of depth of cut caused by the change in wheel-workpiece engagement. The model was applied on quenchable steel 1045 and the analysis was verified experimentally. It was shown that the heating cycle in plunge cylindrical grinding is the result of consecutive heating and cooling processes, varying from location to location in a workpiece. The ratio of the workpiece speed to the infeed rate plays an important role in the heat treatment cycle. |
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Keywords: | Grinding-hardening Plunge cylindrical grinding Temperature field Hardened layer thickness Variation of depth of cut |
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