Effects of tool wear on surface integrity of pure iron material under finish turning

被引：4

作者：

Kong J.-X. ^{[1
,2
]}

Hu K. ^{[2
]}

Xia Z.-H. ^{[2
]}

Li L. ^{[1
]}

机构：

[1] College of Aerospace Engineering, Nanjing University of Aeronautics and Astronautics, Nanjing, 210016, Jiangsu

[2] Institute of Mechanical Manufacturing Technology, China Academy of Engineering Physics, Mianyang, 621900, Sichuan

来源：

Huanan Ligong Daxue Xuebao/Journal of South China University of Technology (Natural Science) | 2016年 / 44卷 / 02期

基金：

中国国家自然科学基金;

关键词：

Average wear; Pure iron; Surface integrity; Tool life; Turning;

D O I：

10.3969/j.issn.1000-565X.2016.02.012

中图分类号：

学科分类号：

摘要：

The finish turning of pure iron material with uncoated carbide tools under minimal-quantity lubrication was performed to investigate the tool wear and its effects on the surface integrity of pure iron material turned respectively by the tool with an average flank wear of 0.12 and 0.21 mm. The results show that (1) the life of the tool used in the finish turning of pure iron material is greatly influenced by the turning speed; (2) the nose wear and the notch wear on the flank surface are two main wear modes of the tool; (3) the surface roughness rapidly increases with the tool wear at a high turning speed but first increases and then changes a little with the tool wear at a low turning speed; (4) both the tangential and the axial residual stresses on the tool surface first decrease and then increase with the increase in the tool wear at the turning speeds of 100 and 300 m/min, while the surface microhardness first increases and then decreases; and (5) with the increase in tool wear, both the distortion and the tensile plastic deformation of grains in the surface layer increase, and serious tearing and plastic flow defects appear on the workpiece surface. © 2016, South China University of Technology. All right reserved.

引用

页码：74 / 80

页数：6

共 18 条

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