| 选区激光熔化中激光束的传输变换及聚焦特性 |
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| 引用本文： | 师文庆,杨永强.选区激光熔化中激光束的传输变换及聚焦特性[J].激光技术,2008,32(3):308-311. |
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| 作者姓名： | 师文庆 杨永强 |
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| 作者单位： | 1.华南理工大学机械工程学院, 广州 510640; |
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| 摘 要： | 为了获得光束质量较好、光斑尺寸较小、功率密度较高的、适合于在选区激光熔化快速成型技术中应用的激光束,对应用于选区激光熔化快速成型技术中的高斯光束进行传输与变换。对其传输变换及聚焦特性进行了理论分析与实验验证,实验结果与理论分析的结果相符。取得了功率密度达106W/cm2以上的、光斑尺寸较小的、满足于在选取激光熔化技术中应用的光斑。将其应用于镍基合金(Ni25)和铜磷合金粉末的三维选区激光熔化快速成型。结果表明,这种传输变换及聚焦特性是可行有效的,得到了满足要求的光斑尺寸和功率密度。
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| 关 键 词： | 激光技术 选区激光熔化 传输与变换 高斯光束 聚焦特性 |
| 文章编号： | 1001-3806(2008)03-0308-04 |
| 收稿时间： | 2007-01-29 |
| 修稿时间： | 2007年1月29日 |
Laser beam's focused properties and its transmission and transformation in selective laser melting |
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| SHI Wen-qing,YANG Yong-qiang.Laser beam's focused properties and its transmission and transformation in selective laser melting[J].Laser Technology,2008,32(3):308-311. |
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| Authors: | SHI Wen-qing YANG Yong-qiang |
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| Affiliation: | SHI Wen-qing1,2,YANG Yong-qiang1(1.School of Mechanical Engineering,South China University of Technology,Guangzhou 510640,China,2.College of Science,Guangdong Ocean University,Zhanjiang 524088,China) |
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| Abstract: | In order to obtain the laser beam with better beam quality,smaller spot diameter and higher power density in rapid prototyping for selective laser melting(SLM),Gaussian beam used in SLM was transmitted and transformed.The theoretic and experimental transmission,transformation and focused characteristic properties were analyzed.The experimental results are consistent with the theoretic ones.The smaller spot with power density above 106W/cm2 which is applicable in SLM,was obtained.When used in 3-D rapid proto... |
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| Keywords: | laser technique selective laser melting transmission and transformation Gaussian beam focused properties |
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