Title: Wear of mixed alumina ceramic tools in high speed facing of Inconel 718

Authors: RM. Arunachalam

Addresses: Department of Mechanical Engineering, Sona College of Technology, TPT Road, Salem 636005, Tamilnadu, India

Abstract: A study was undertaken to investigate the performance of mixed alumina ceramic tools in high speed facing of solution annealed Inconel 718. Machining tests were conducted using round inserts at cutting speeds ranging from 150 to 450 m/min. The feed rates ranged from 0.10 to 0.20 mm/rev and two depths of cut of 0.5 and 1.0 mm were used. The different tool failure modes, wear mechanisms, the effect of cutting speed, feed rate and depth of cut on the tool wear, tool life and cutting forces were studied. In addition the surface finish and residual stresses were also examined. Since ceramic cutting tools wear in an unpredictable pattern, a failure indicator that could be reliably applied has also been identified.

Keywords: mixed alumina; ceramic cutting tools; Inconel 718; cutting speed; feed rate; depth of cut; tool wear; flank wear; notch wear; DOCN; trailing edge wear; TEW; wear mechanisms; surface finish; residual stresses; material removal rate; MRR; high speed facing; high speed machining; metal cutting; tool life; cutting forces.

DOI: 10.1504/IJMMM.2007.015475

International Journal of Machining and Machinability of Materials, 2007 Vol.2 No.3/4, pp.433 - 450

Published online: 19 Oct 2007 *

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