文献类型：期刊文献

英文题名：Wear mechanism of the loose layer on the rake face of a new cemented carbide micro groove turning tool

作者：Jiang, Hongwan He, Lin Ren, Zhongwei Zhan, Gang Zou, Zhongfei

第一作者：Jiang, Hongwan

通信作者：Jiang, HW[1];Jiang, HW[2]

机构：[1]Guizhou Inst Technol, Coll Mech Engn, Guiyang 550003, Guizhou, Peoples R China;[2]Guizhou Univ, Coll Mech Engn, Guiyang 550025, Guizhou, Peoples R China;[3]Liupanshui Normal Coll, Liupanshui 553004, 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, Coll Mech Engn, Guiyang 550003, Guizhou, Peoples R China;corresponding author), Guizhou Univ, Coll Mech Engn, Guiyang 550025, Guizhou, Peoples R China.|贵州理工学院机械工程学院;贵州理工学院;

年份：2018

卷号：98

期号：5-8

起止页码：1069-1080

外文期刊名：INTERNATIONAL JOURNAL OF ADVANCED MANUFACTURING TECHNOLOGY

收录：;EI(收录号：20182505344181);Scopus(收录号：2-s2.0-85048630683);WOS:【SCI-EXPANDED(收录号:WOS:000442690500003)】；

基金：This work is financially supported by the National Natural Science Foundation of China (5176500), Doctoral Fund of Ministry of Education (20125201110001), and the National Natural Science Foundation of China (51665007).

语种：英文

外文关键词：40CrMnMo; Micro groove; Turning tool; Loose layer; Diffusion wear; Brittleness-weakening

摘要：The loose layer can appear on the rake face of a turning tool under certain cutting conditions and have an important influence on the rake face wear. In this paper, wear morphology and wear mechanism of loose layer on the rake face of the original turning tool and the new cemented carbide micro groove turning tool developed independently during the cutting process are studied, by the combination of theoretical analysis and cutting test. And the relationships between the diffusion wear and the adhesive wear of the loose layer on the rake face of the new micro groove turning tool are further analyzed and revealed. The research results show that the loose layer on the rake face of two turning tools is caused by the diffusion wear, which is formed by the brittleness-weakening of tool material in the region resulting from elements diffusion. Meanwhile, the wear degree of the rake face of tools is aggravated by the mutual promotion of diffusion wear and adhesive wear. In the normal wear stage, the degree of looseness and brittleness of the rake face of the original turning tool is greater than the one of the micro groove turning tool. In the severe wear stage, cobalt elements in the rake face of the two turning tools are dissolved and diffused in varying degrees, which further aggravates the brittle-weakening of materials in the region. But the degree of loose brittleness of the rake face of the original turning tool is still greater than the one of the micro groove turning tool. It can be concluded that the micro groove on the rake face of the new turning tool can improve the rake face wear to a certain extent.