文献类型：会议论文

英文题名：Diffusion and Oxidation Wear of Superhard Cutting Tool Based on Thermodynamics

作者：Shao, Fang Wang, Yuting Zou, Lijing Wu, Yanying Sun, Dong

第一作者：Shao, Fang

通信作者：Shao, F[1]

机构：[1]Guizhou Inst Technol, Sch Mech Engn, Guiyang, Peoples R China;[2]Shanghai Int Business & Econ Univ, Sch Finance Management, Shanghai, Peoples R China;[3]Binzhou Polytechn, Binzhou, Peoples R China

第一机构：贵州理工学院机械工程学院

通信机构：corresponding author), Guizhou Inst Technol, Sch Mech Engn, Guiyang, Peoples R China.|贵州理工学院机械工程学院;贵州理工学院;

会议论文集：International Conference on Mechatronics Engineering and Computing Technology (ICMECT)

会议日期：APR 09-10, 2014

会议地点：Shanghai, PEOPLES R CHINA

语种：英文

外文关键词：Thermodynamics; Superhard cutting tool; Diffusion wear; Oxidation wear

年份：2014

摘要：Cutting temperature always highly reaches over to 1000 degrees C when high speed machining with PCBN tools. Diffusion of tool material element may have important influence on tool wear at such high temperature, the diffusion wear and oxidation wear have become the major wear mechanism. In this paper, the rules of diffusion wear and oxidation wear for PCBN cutting tools are proposed and analyzed based on thermodynamics theory. Dissolution concentrations in typical normal workpice materials of PCBN tool material at different temperature are then calculated. Diffusion reaction rules in high temperature are developed and analyzed using Gibbs free energy criterion. The machining tests were conducted using the PCBN tools at different cutting speeds of 50, 95,100 and 180 m/min, feed of 0.1, 0.2 and depth of cut of 0.1, 0.8, 1, and 1.5 mm respectively on PUMA300LM numerically-controlled lathe. It was found that the theoretical results were uniform with the experimental data; the results will provide useful references for tool material design and selection.