Papers by Author: Feng Xie

Abstract: The high-speed hard and dry cutting chips of hardened alloy-steel with PCBN tool is presented in this paper: After the work piece temperature measured by ThermaVision infrared thermometer, it is proved that the heat generated by cutting is carried out by chips; After SEM analyzed chip it is proved that the cutting temperature is increased and then fallen and the PCBN tool suitable for high-speed hard and dry cutting. It is suitable for PCBN tool cutting hardened alloy-steel 42CrMo instead of grinding.

Abstract: This paper deals with the High-speed Hard and Dry Cutting mechanism of hardened alloy-steel with PCBN tool: the cutting speed and workpieces temperature and tool wear are being discussed in different cutting speeds when cutting alloy-steel 42CrMo. After the workpiece temperature measured by ThermaVision, it is proved that the workpiece temperature was not high and changed little. Through the SEM and EDS analyses for chip and tool wear, it is proved that PCBN tool is suitable for High-speed Hard and Dry Cutting. It is suitable for PCBN tool to cut hardened alloy-steel 42CrMo instead of grinding.

Abstract: Nano technology is a new technology and begun in 1980’s. The paper firstly overviews the development of cermet cutter and its general situation in research, and then introduces the inherent properties owned by nano-technology and nano-material. In the end the nano-TiN modified TiC-based cermet cutter is fabricated and the mechanical properties of the developed cutter are also tested and analyzed. In order to study nano-modification effect, both nano-modified cermet and general cermet have been made. The mechanical properties of two kinds of materials are also measured. By comparing the measured datum, it has been indicated that the nano-modified cermet has better mechanical properties and the nano-modification technology is effective. This presents a new way to increase the toughness of cermet cutter.