Suppression of tool wear in diamond turning of ferrous metals

Abstract

Diamond cutting tool shows severe wear in turning of ferrous metals. On the other hand, it is reported that a nitriding steel show less wear. However, the mechanism of wear suppression is not clarified. In this paper, aiming at the suppression of wear of single point diamond cutting tool, analyses of wear mechanism in cutting of iron and nitriding iron were carried out using ab-initio molecular dynamics calculation. The results suggest that interaction between carbon atoms on tool surface and iron atoms on workpiece surface is suppressed by nitriding.