Paper Title:
Turning of Compacted Graphite Iron Using Commercial TiN Coated Si3N4 under Dry Machining Conditions
  Abstract

Due to their high hardness and wear resistance Si3N4 based ceramics are one of the most suitable cutting tool materials for machining hardened materials. Therefore, their high degree of brittleness usually leads to inconsistent results and sudden catastrophic failures. Improvement of the functional properties these tools and reduction of the ecological threats may be accomplished by employing the technology of putting down hard coatings on tools in the state-of-the-art PVD processes, mostly by improvement of the tribological contact conditions in the cutting zone and by eliminating the cutting fluids. However in this paper was used a Si3N4 based cutting tool commercial with a layer TiN coating. In this investigation, the performance of TiN coating was assessed on turning used to machine an automotive grade compacted graphite iron. As part of the study were used to characterise the performance of cutting tool, flank wear, temperature and roughness. The results showed that the layer TiN coating failed to dry compacted graphite iron under aggressive machining conditions. However, using the measurement of flank wear technique, the average tool life of was increased by Vc=160 m/min.The latter was also observed using a toolmakers microscope and scanning electron microscopy (SEM).

  Info
Periodical
Materials Science Forum (Volumes 591-593)
Edited by
Lucio Salgado and Francisco Ambrozio Filho
Pages
604-609
DOI
10.4028/www.scientific.net/MSF.591-593.604
Citation
J. V. C. Souza, M. do C. de A. Nono, M.V. Ribeiro, O. M. M. Silva, M.A. Lanna, "Turning of Compacted Graphite Iron Using Commercial TiN Coated Si3N4 under Dry Machining Conditions", Materials Science Forum, Vols. 591-593, pp. 604-609, 2008
Online since
August 2008
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Price
$32.00
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