In:
Advanced Materials Research, Trans Tech Publications, Ltd., Vol. 711 ( 2013-6), p. 267-271
Kurzfassung:
In this paper, a type of Si 3 N 4 /TiC micro-nanocomposite ceramic tool materials were fabricated via hot pressing technique by adding Si 3 N 4 and TiC nanoparticles. Cutting forces, temperature and wear behavior in dry machining of nodular cast iron with Si 3 N 4 /TiC micro-nanocomposite ceramic tool were investigated, in comparison with a commercial Sialon ceramic tool. Turning experiments were carried out at three different cutting speeds, which were 110, 175, and 220 m/min. Feed rate ( f ) and depth of cut ( a p ) were kept fixed at 0.1 mm/rev and 0.5 mm. The results show that the radial thrust force (F y ) become the largest among the three cutting force components (F x , F y and F z ), and F y is the most sensitive to the changes of feed rate and depth of cut. In dry cutting of nodular cast iron, the cutting tool temperature rise rapidly with increase in cutting speed. The cutting temperature reach nearly 1000°C at the cutting speed of 220 m/min. The two types of ceramic tools have similar cutting performance, while the Si 3 N 4 /TiC micro-nanocomposite tool exhibits a better cutting performance than that of the Sialon tool. The wear rate of Si 3 N 4 /TiC micro-nanocomposite ceramic cutting tool is mainly dominated by the abrasion, while the wear rate of Sialon ceramic cutting tool is dominated by the abrasive action, and pullout of grains.
Materialart:
Online-Ressource
ISSN:
1662-8985
DOI:
10.4028/www.scientific.net/AMR.711
DOI:
10.4028/www.scientific.net/AMR.711.267
Sprache:
Unbekannt
Verlag:
Trans Tech Publications, Ltd.
Publikationsdatum:
2013
ZDB Id:
2265002-7
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