Laser-assisted CBN Belt Grinding of TC4 Titanium Alloy for Material Removal Behavior and Surface Integrity Study

被引：0
|
作者：
Xiao G. [1 ]
Liu Z. [1 ]
He Y. [1 ]
Liu G. [1 ]
Deng Z. [1 ]
机构：
[1] College of Mechanical and Vehicle Engineering, Chongqing University, Chongqing
来源：
Jixie Gongcheng Xuebao/Journal of Mechanical Engineering | 2024年 / 60卷 / 09期
关键词：
CBN belt grinding; laser-assisted belt grinding; material removal behavior; surface integrity; TC4 titanium alloy;
D O I：
10.3901/JME.2024.09.241
中图分类号：
学科分类号：
摘要：
The laser-assisted CBN belt grinding process combines the softening modification of the material by the laser with the efficient material removal and high surface integrity of belt grinding to achieve high-performance machining of high-tenacity TC4 titanium alloys with low damage. Laser-assisted CBN belt grinding of TC4 titanium alloy is investigated to determine the effect of laser power on grinding force, material removal behavior, and surface integrity. The results show that increasing the laser power can increase the degree of material softening modification and reduce the grinding force and its fluctuation amplitude, with a 57.2% reduction in normal grinding force and a 68.7% reduction in tangential grinding force at the maximum laser power. As the degree of material softening increases, the material removal behavior changes from ductile removal to plastic removal, the ductile tearing and grinding damage on the surface is reduced, and the surface quality, surface consistency, and residual compressive stress on the surface are improved. The surface roughness reached Ra 1.23 μm at maximum laser power, and the surface residual compressive stress reached 94.6 MPa. The laser-assisted CBN abrasive belt grinding surface was infiltrated with a large amount of N and O elements, and the Ti elements on the surface existed in three states: TiN, TiO2, and metallic Ti. The introduced N and O elements may improve the wear and corrosion resistance of the surface. It is hoped that this study will provide input to the study of the removal behavior and surface integrity of difficult-to-machine materials such as titanium alloys by laser-assisted machining. © 2024 Chinese Mechanical Engineering Society. All rights reserved.
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页码：241 / 253
页数：12
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