| 316L不锈钢粉末选区激光熔化成型致密化研究 |
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| 引用本文： | 孙婷婷,杨永强,苏旭彬,郭明华. 316L不锈钢粉末选区激光熔化成型致密化研究[J]. 激光技术, 2010, 34(4): 443-446. DOI: 10.3969/j.issn.1001-3806.2010.04.004 |
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| 作者姓名： | 孙婷婷 杨永强 苏旭彬 郭明华 |
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| 作者单位： | 1.华南理工大学 机械与汽车工程学院 广州 510640; |
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| 基金项目： | 2007粤港关键领域突破中标项目(广州市专项)资助项目 |
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| 摘 要： | 为了研究选区激光熔化所加工的316L不锈钢成型件的致密度与工艺参量之间的关系,在自主研发的选区激光熔化成型设备DiMetal-280上,采用316L不锈钢粉末,用层间互错扫描方式以及不同扫描间距、扫描速率和扫描功率成型若干样块;在显微镜下观察样块形貌加以分析,并采用排水法测试样块致密度。结果表明,在合适工艺范围内,采用层间互错扫描方式有利于提高致密度;随着扫描间距的增大,熔道间搭接方式发生变化,致密度会减小;当扫描速率过小或过大时,致密度会减小;在加工初期时的实际铺粉厚度的变化也会导致致密度减小。该研究为进一步提高316L不锈钢选区激光熔化成型件的致密度奠定了基础。
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| 关 键 词： | 激光技术 快速成型 选区激光熔化 致密度 316L不锈钢 |
| 收稿时间： | 2009-08-19 |
| 修稿时间： | 2009-08-26 |
Research on Densification of 316L Stainless Steel Powder in Selective Laser Melting Process |
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| SUN Ting-ting,YANG Yong-qiang,SU Xu-bin,GUO Ming-hua. Research on Densification of 316L Stainless Steel Powder in Selective Laser Melting Process[J]. Laser Technology, 2010, 34(4): 443-446. DOI: 10.3969/j.issn.1001-3806.2010.04.004 |
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| Authors: | SUN Ting-ting YANG Yong-qiang SU Xu-bin GUO Ming-hua |
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| Abstract: | To research the relationship between process parameters and densification of melted part by selective laser melting (SLM), several specimens were formed by scanning strategy with adjacent layers staggered and different scanning space, scanning speed and laser power in independent developmental selective laser melting equipment DiMetal280, using 316L stainless steel; microscope was employed to observe and analyze the surface morphologies of specimens and the densifications were measured using water-draining. Results showed that densification increased when scanning strategy with adjacent layers staggered was employed under reasonable process parameters, however, decreased with increasing of scanning space due to the changes of track overlapping and also decreased when scanning speed was too low or too high or when practical thickness of powder changed in the beginning of process. |
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| Keywords: | Laser Technology Rapid Prototyping Selective Laser Melting (SLM) Density 316L Stainless Steel |
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