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The effect of high speed machining on the crater wear behaviour of PCBN tools in hard turning

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Show simple item record Gordon Seamus Phelan, P. Lahiff, C. 2020-04-29T10:55:20Z 2020-04-29T10:55:20Z 2019
dc.description peer-reviewed en_US
dc.description.abstract This study investigates the effect of high speed cutting on the crater wear behaviour of PCBN tools in continuous cutting. Turning tests were performed using two PCBN grades, one high CBN content (PCBNH) and one low CBN content (PCBN-L) at two cutting speeds (150 and 300 m/min). The tool life of each grade at both speeds was determined and the associated crater wear progression charts were generated. Examination of the wear surfaces in the SEM was used to study the wear mechanisms. In order to measure crater depth and evaluate the effect of wear on the tool geometry, the cross-section profile of each cutting edge was replicated. As expected, PCBN-L was found to be the most suitable grade for continuous cutting of hardened steel. While it was the most wear resistant grade, it is also the most sensitive to cutting speed. Flank and crater wear increase with increasing cutting speed. The wear behaviour of PCBN-H is very different; flank wear is significant but is not so sensitive to cutting speed. Crater wear decreases with increasing cutting speed. The results of the machining tests in conjunction with analysis of the wear scars suggest that the wear behaviour of PCBN-L is dominated by chemical wear and diffusion with adhesion and abrasion making a secondary contribution. This ranking is reversed for PCBN-H where abrasion and adhesion are the primary wear mechanisms but during high speed cutting, plastic deformation also contributes to the wear process. en_US
dc.language.iso eng en_US
dc.publisher Elsevier en_US
dc.relation.ispartofseries Procedia Manufacturing (29th FAIM2019);38, pp. 1833–1848
dc.subject PCBN en_US
dc.subject Continuous hard turning en_US
dc.subject High speed cutting en_US
dc.subject Crater wear en_US
dc.subject Flank wear en_US
dc.title The effect of high speed machining on the crater wear behaviour of PCBN tools in hard turning en_US
dc.type info:eu-repo/semantics/article en_US
dc.type.supercollection all_ul_research en_US
dc.type.supercollection ul_published_reviewed en_US
dc.identifier.doi 10.1016/j.promfg.2020.01.076
dc.rights.accessrights info:eu-repo/semantics/openAccess en_US

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