Study on micro V-groove face turning of cobalt-free tungsten carbide using diamond tools

Abstract

Mono-crystalline and nano-polycrystalline diamond tools are used to perform micro V-groove face turning of cobalt-free tungsten carbide. The tool wear ratio, defined as tool edge wear length/total cutting length, with the nano-polycrystalline diamond tool was 50% smaller than that with mono-crystalline diamond tool. Cleavage due to large chips was mainly observed at the cutting edge of the mono-crystalline diamond tool; abrasive wear and small chips were mainly observed with the nano-polycrystalline diamond tool.