Simulation of Temperature Field Using Different Scanning Methods in Selective Laser Melting
X. Li, Z-Y He, Z. Li and X-H. Chen
To investigate the effects of S-shaped and spiral scanning modes on selective laser melting temperature, a selective laser melting model was established. The temperature field distribution of the S-shaped scanning method and spiral scanning method in SLM is simulated. Compared with the S-shaped scanning method, the laser in spiral scanning is scanned from the outside to the inside, which has a continuous preheating effect on the inside. The internal slows down the external cooling rate through heat conduction, which makes the overall temperature field distribution of the parts more uniform, reduces the temperature gradient and stress concentration. The research results are beneficial for the selection and optimization of selective laser melting parameters
Keyword: Elective laser melting, S-shaped scanning method, spiral scanning method, temperature distribution