Influence of Built-up layer on the wear of uncoated cemented carbide tool during cutting of Inconel 718

抄録

Dry cutting experiments were carried out to investigate the BUL formation process and its influence on the wear of uncoated cemented carbide tool during cutting of Inconel 718. The results show that a thin, stable BUL can form on the tool rake face as a result of the accumulation of workpiece material during cutting of Inconel 718, which can protect the tool. Concerning flank wear and nose wear, adhesive wear is the major wear mechanism, but the adhering layer formed on the worn surface can decrease the tool wear. It is also confirmed that the quick formation and fall-off process of the unstable adhesion has a strong effect on notch wear. In addition, BUL formation mechanism and wear mechanism are also proposed.