Research on the Wear Process of High Speed Cutting Ni-Based Superalloy

Abstract

As the main method of high efficiency cutting Ni-based superalloy, high-speed cutting can not but intensify the cutting-tool wear for the high cutting force and cutting temperature. So, it is very necessary to study the process of cutting-tool wear and wear mechanism, especially, the effect of cutting-tool wear on the cutting force, cutting temperature and surface roughness of machined workpiece. In this paper, investigation of tool wear in high-speed cutting is proposed, the PCDTiAlN carbide insert is used in the experiment, the cutting-tool wear and the corresponding cutting force, cutting temperature and surface roughness of machined workpiece is detected. It indicates that the cutting force, cutting temperature and surface roughness of machined workpiece is changed corresponding the cutting-tool wear,the wear process of coated tool include the coated material wears and base material wears,the wear mechanism is complex. Key word: superalloy, high-speed cutting, tool wear, wear form ; .

Energy field-assisted high-speed dry milling green machining technology for difficult-to-machine metal materials

“…Compared to the AlTiN tool, the tool life of the TiAlSiN- coated tool increased by 32% and 66% at v c values of 150 and 200 m/min, respectively, as shown in Fig. 5(b) [112].…”

“…However, it is apparent that the tool wear resistance of PVD-coated tools is much better than that of CVD-coated tools because the thermal conductivity of Al 2 O 3 decreased and that of TiAlN increased with increasing cutting temperature [111]. Considering the influence of tool coating on HSDM processing, Liu et al [112] assumed that the regressive development of tool coating was the main factor restricting the promotion and application of HSDM in the industry. Based on this, they reported the influence of AlTiN-coated tools and TiAlSiN-coated tools on HSDM processing of TC4.…”

“…The XRD (X-ray diffraction) diffraction patterns of the two differently coated tools, shown in Fig. 5(a) [112], were compared. Compared to the AlTiN tool, the tool life of the TiAlSiN- coated tool increased by 32% and 66% at v c values of 150 and 200 m/min, respectively, as shown in Fig.…”

“…The tool-wear image in Fig. 5(c) [112] reveals that the TiAlSiN coating can significantly prolong the tool life of the cutting edge. Furthermore, the TiAlSiN-coated tool exhibits better oxidation resistance and more uniform chips [112].…”