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Finishing Performance and Wear Mechanisms of Cubic Boron Nitride Tools in Turning Hardness 52100 Steels

Published

Author(s)

Y K. Chou, M Barash, Christopher J. Evans

Abstract

This study investigated the performance and wear behavior of different cubic boron nitride (CBN) tools in finish turning of hardened 52100 steels. Tool performance was evaluated based on surface finish and flank wear land width. Wear mechanisms of CBN cutting tools were primarily characterized by scanning electron microscopy (SEM). The results indicate that flank wear rate (VBmax/cutting length) is proportional to the cutting speed. It is also shown that low CBN content tools have the potential to generate finer surface finish at smaller depth of cut. However, high CBN content tools show no improvement in surface roughness at lighter cuts, though the flank wear and wear rate reduce significantly. The transfer layer on the flank wear zone, which exhibits distinctly different structure on different CBN tools, seems to have a significant effect on the tool wear process. The removed binder phase on high CBN content tools and shallow CBN holes on low CBN content tools suggest adhesion as the dominant wear mechanism.
Proceedings Title
Proceedings of Ceramic Industry Manufacturing Conference & Expos
Conference Location
Pittsburgh, PA, USA

Citation

Chou, Y. , Barash, M. and Evans, C. (1995), Finishing Performance and Wear Mechanisms of Cubic Boron Nitride Tools in Turning Hardness 52100 Steels, Proceedings of Ceramic Industry Manufacturing Conference & Expos, Pittsburgh, PA, USA (Accessed March 3, 2024)
Created December 31, 1994, Updated October 12, 2021