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首页> 外文期刊>Journal of manufacturing science and engineering: Transactions of the ASME >Three-Dimensional Modeling of Selective Laser Sintering of Two-Component Metal Powder Layers
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Three-Dimensional Modeling of Selective Laser Sintering of Two-Component Metal Powder Layers

机译：两组分金属粉末层选择性激光烧结的三维建模

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摘要

Laser sintering of a metal powder mixture that contains two kinds of metal powders with significantly different melting points under a moving Gaussian laser beam is investigated numerically. The continuous-wave laser-induced melting accompanied by shrinkage and resolidification of the metal powder layer are modeled using a temperature-transforming model. The liquid flow of the melted low-melting-point metal driven by capillary and gravity forces is also included in the physical model. The numerical results are validated by experimental results, and a detailed parametric study is performed. The effects of the moving heat source intensity, the scanning velocity, and the thickness of the powder layer on the sintering depth, the configuration of the heat affected zone, and the temperature distribution are discussed.
机译：在移动的高斯激光束下，对含两种熔点明显不同的金属粉末的金属粉末混合物的激光烧结进行了数值研究。使用温度转换模型对连续波激光诱导的熔融伴随着金属粉末层的收缩和再凝固进行建模。物理模型中还包括由毛细管力和重力驱动的熔融低熔点金属的液流。通过实验结果验证了数值结果，并进行了详细的参数研究。讨论了移动热源强度，扫描速度和粉末层厚度对烧结深度，热影响区的构型和温度分布的影响。

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