FENG Yunheng, HAN Wen, XU Han, XU Lei, YU Shengrui

(Jingdezhen Ceramic Institute, Jingdezhen 333403, Jiangxi, China)

Abstract: The simulation of the temperature field is an effective way to predict the morphology of the ceramics processed with CO₂ pulsed laser. The dynamic removal of the work piece materials was simulated by using the birth-death unit of ANSYS, realizing the simulation of the temperature field and the shape prediction for the processing of traditional ceramic laser. Based on the design of the 3 factor and 4 level orthogonal experiment, by comparing the width and depth of the morphological data between the simulation and experiment, the absolute error between the experimental and simulated values was controlled to be ± 0.05 mm, which verifies the validity of the finite element model of the temperature field. The influences of the process parameters, such as power, scanning speed and repeat frequency, on the processing depth were analyzed by using the polar analysis method, so that a single-layer single-track maximum machining depth of 0.375 mm could be achieved.
Key words: ceramics; CO₂ pulse laser; birth-death elements; finite element; temperature field