Underwater Laser Micromilling of Commercially-Pure Titanium Using Different Scan Overlaps

2017 2nd International Conference on Functional Materials and Metallurgy

材料科学;冶金学

Charee, Wisan^1 ; Tangwarodomnukun, Viboon^2

Department of Industrial Engineering, Faculty of Industry and Technology, Rajamangala University of Technology Isan, Sakon Nakhon

47160, Thailand^1

Department of Production Engineering, Faculty of Engineering, King Mongkut's University of Technology Thonburi, Bangkok

10140, Thailand^2

关键词: Commercially Pure titaniums;    High pulse repetition rate;    Laser milling process;    Laser-pulse energy;    Material removal rate;    Milled surfaces;    Nanosecond pulse lasers;    Roughing and finishing;   

Others  :  https://iopscience.iop.org/article/10.1088/1757-899X/303/1/012015/pdf
DOI  :  10.1088/1757-899X/303/1/012015

学科分类：材料科学（综合）

来源: IOP

【 摘 要 】

Underwater laser milling process is a technique for minimizing the thermal damage and gaining a higher material removal rate than processing in air. This paper presents the effect of laser scan overlap on cavity width, depth and surface roughness in the laser milling of commercially-pure titanium in water. The effects of laser pulse energy and pulse repetition rate were also examined, in which a nanosecond pulse laser emitting a 1064-nm wavelength was used in this study. The experimental results indicated that a wide and deep cavity was achievable under high laser energy and large scan overlap. According to the surface roughness, the use of high pulse repetition rate together with low laser energy can promote a smooth laser-milled surface particularly at 50% scan overlap. These findings can further suggest a suitable laser micromilling condition for titanium in roughing and finishing operations.