Title: Experimental study of coated carbide tools behaviour: application for Ti-5-5-5-3 turning

Authors: V. Wagner, M. Baili, G. Dessein, D. Lallement

Addresses: Ecole Nationale d'Ingenieurs de Tarbes, Laboratoire Genie de Production, 47 Avenue d'Azereix BP 1629, 65016 Tarbes cedex, France; Messier Dowty Bidos, Rue Guynemer, BP39, 64401 Oloron Sainte Marie, France. ' Ecole Nationale d'Ingenieurs de Tarbes, Laboratoire Genie de Production, 47 Avenue d'Azereix BP 1629, 65016 Tarbes cedex, France. ' Ecole Nationale d'Ingenieurs de Tarbes, Laboratoire Genie de Production, 47 Avenue d'Azereix BP 1629, 65016 Tarbes cedex, France. ' Messier Dowty Bidos, Rue Guynemer, BP39, 64401 Oloron Sainte Marie, France

Abstract: The goal of this paper is to study the relation between the input data (conditions and geometry of cut) and answers (wear of tool, forces and cutting temperatures) when machining the Ti-5-5-5-3 alloy treated. This study has shown that the cutting process is different and that the slip forces are preponderates. Compared with other materials, the specific cutting pressure is higher and does not vary according to the cutting speed but depend on feed rate. Moreover, both edge preparation and feed rate have an influence on cutting force direction. Besides, cutting temperatures are high and almost similar to those provided by high speed machining with low cutting speed. Finally, we have shown that failure modes are different from those obtained when machining other titanium alloys. Built-up edge is the most deteriorating phenomenon and no flank wear was met in our study context.

Keywords: cutting force; cutting temperature; cutting conditions; tool geometry; tool wear; coated carbide tools; titanium alloys; slip forces; feed rate; failure modes; turning.

DOI: 10.1504/IJMMM.2011.039649

International Journal of Machining and Machinability of Materials, 2011 Vol.9 No.3/4, pp.233 - 248

Published online: 13 Apr 2011 *

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