Numerical simulation and experimental investigation on laser milling of Al2O3 ceramic
Laser milling is a new technology of removing materials by using a series of densely overlapped laser pulses. In this paper, laser milling process of Al2O3 ceramic was introduced firstly. Then a 3D FE model of the temperature field was established based on ANSYS software, the effect of laser milling parameters such as laser power, scanning velocity, spot diameter and overlapping amount on the temperature field of milling process was analysed, and the milling quality of ceramic materials was discussed. It is shown that laser power and scanning velocity have more important influence on removing rate of materials, the milling depth increases with the increase of laser power and the decrease of scanning speed. While scanning velocity and overlapping rate have more important influence on milling quality, which can be improved with the decrease of scanning speed and overlapping rate. Lastly, laser milling experiment of Al2O3 ceramic sample was carried out by Nd: YAG pulsed laser. The milling depth and width attained form experiments were compared with numerical simulation, and the agreements were obtained. The results indicate that the numerical simulation is valuable for predicting the milling depth and width of ceramic materials, which provides the basis for effectively controlling the forming process in laser milling.
Y.B.Zhu J.Z.Zhou S.Huang L.L.Hu W.Wang J.R.Fan
国际会议
桂林
英文
1-3
2010-11-16（万方平台首次上网日期，不代表论文的发表时间）