Yibo Gao, Yong Yang, Yugeng Zhou, Zhenwei Liu, Wenjie Wu, Longbiao Gao, Qiyong Shi, Xiangbin Kong, Jianming Zheng, Jianzhong Fu, Guiying Yu, Jinhua Wu, Chunwei Wang, Bixia Wang, Ling Shan. Relative Density of Mold Steel H13 Fabricated by Hybrid Laser Spot Melting[J]. Laser & Optoelectronics Progress, 2021, 58(23): 2314008
- Laser & Optoelectronics Progress
- Vol. 58, Issue 23, 2314008 (2021)
Fig. 1. Wanfeng Artisan-SLM250 SLM system. (a) Overall; (b) chamber
Fig. 2. Principle diagram of beam combiner for hybrid laser spot
Fig. 3. Shape and diameter of laser spot. (a) Spot for melting; (b) spot for preheating and its position relative to spot for melting; (c) diameter of fiber laser spot versus distance away from working plane
Fig. 4. Rotational and translational scanning strategy
Fig. 5. Samples built by individual fiber laser spot
Fig. 6. Relative density versus individual fiber laser spot process parameters
Fig. 7. Relative density versus volumetric energy density of individual fiber laser spot
Fig. 8. Relative density versus preheating power under different
Fig. 9. Relative density versus melting/preheating power under different processing parameters. (a) Group 1; (b) group 2; (c) group 3; (d) group 4
Fig. 10. Highest relative densities obtained by 4 groups of parameters within individual and hybrid laser spots
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Table 1. Molding process parameters and relative density of mold steel H13
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Table 2. Pearson correlation coefficient and correlation test of paired samples (volumetric energy density and relative density)
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Table 3. Influence of diameter of individual fiber laser spot on relative density
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Table 4. Relative densities of SLM processed H13 from references
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