Effect of scanning strategy on the temperature field of selective laser melting of AlSi10Mg

Hao Zhang; Jizhuang Hui; Junjie Wang; Zhiqiang Yan; Zhiguang Xu

doi:10.1117/12.2690172

17 August 2023 Effect of scanning strategy on the temperature field of selective laser melting of AlSi10Mg

Hao Zhang, Jizhuang Hui, Junjie Wang, Zhiqiang Yan, Zhiguang Xu

Author Affiliations +

Proceedings Volume 12757, 3rd International Conference on Laser, Optics, and Optoelectronic Technology (LOPET 2023); 127571Y (2023) https://doi.org/10.1117/12.2690172
Event: 3rd International Conference on Laser, Optics and Optoelectronic Technology (LOPET 2023), 2023, Kunming, China

Abstract

To well control the part temperature distribution and reduce the intra-layer heat accumulation in the selective laser melting (SLM) process, a three-dimensional finite element model was developed to simulate the effect of scan strategy (such as unidirectional, shuttle, block and ring) on the part temperature field in SLM process. The model considered the physical properties of the AlSi10Mg material such as density, specific heat capacity and thermal conductivity. The Gaussian heat source was normally employed to simulate the heating, melting, solidifying and cooling process during the manufacturing process. Results show the relative error between the measured single-pass melt pool width and simulated result is within 4.2 %. The ring scanning is optimal due to the uniform temperature distribution and smaller temperature gradient. The proposed model can provide powerful guide for the selection of scanning strategy in the real manufacturing of continuous SLM process.

Citation Download Citation

Hao Zhang, Jizhuang Hui, Junjie Wang, Zhiqiang Yan, and Zhiguang Xu "Effect of scanning strategy on the temperature field of selective laser melting of AlSi10Mg", Proc. SPIE 12757, 3rd International Conference on Laser, Optics, and Optoelectronic Technology (LOPET 2023), 127571Y (17 August 2023); https://doi.org/10.1117/12.2690172

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