Research on the Material Removal of TC17 Titanium Alloy by Picosecond Laser Assisted Belt Grinding

被引：1
|
作者：
He Y. [1 ]
Xiao G. [1 ]
Zhu S. [1 ]
Liu G. [1 ]
Huang Y. [1 ]
机构：
[1] College of Mechanical and Vehicle Engineering, Chongqing University, Chongqing
来源：
Jixie Gongcheng Xuebao/Journal of Mechanical Engineering | 2023年 / 59卷 / 09期
关键词：
material removal behavior; picosecond laser assisted belt grinding; single grain; titanium alloy;
D O I：
10.3901/JME.2023.09.360
中图分类号：
学科分类号：
摘要：
Titanium alloy has the characteristics of high strength and high thermal strength, which is a typical difficult-to-machine material. Laser assisted machining can change the properties of a material and significantly improve its machinability. A new method of picosecond laser assisted belt grinding of TC17 titanium alloy is proposed, and the influence of laser parameters on surface preheating temperature and different initial pressures of single grain on the main cutting force and material removal behavior is studied based on the picosecond laser-assisted single grain scratching. Simulation results show that the laser power and laser scanning speed have a significant impact on the surface temperature, and the maximum temperature of the laser irradiation surface is 2 019 °C when the laser power is 4.8 W and the laser scanning speed is 300 mm/s, which exceeds the melting point of TC17. Experimental results show that compared with single grain scratch, picosecond laser-assisted single grain scratch can significantly reduce the main cutting force, which can be at a max reduction of 58.7%. The material removal ability has been improved under reasonable laser power, and the laser power is optimal when the laser power is 1.8～2.4 W, while the large laser power will lead to the weakening of the material removal ability. The material removal behavior is still mainly manifested as plastic removal by laser assisted machining, and the chips are transformed into zigzag chips with the increase of laser power. The results of the picosecond laser assisted belt grinding show that the thermal-mechanical coupling effect in the grinding area is reduced, and the processing quality of the surface has been improved. © 2023 Editorial Office of Chinese Journal of Mechanical Engineering. All rights reserved.
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页码：360 / 372
页数：12
相关论文
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