金属粉末选择性Laser烧结热模拟研究进展
Advances in Thermal Modeling of Selective Laser Sintering of Metal Powders
摘要：
单组分金属粉末选择性激光烧结（Selective Laser Sintering，SLS）是一种利用高能激光束扫描、熔化、收缩和固结单组分金属粉末的快速成型技术。为了更好地理解单组分金属颗粒激光烧结过程中的物理机制，引入了一个考虑收缩和对流的温度转换模型来分析单粉末层选择性激光烧结过程中的热/流体行为。该模型也被应用于研究粉末烧结在现有的烧结层顶部的单线-多线扫描方式下，根据实际的制造工艺。
英文摘要：
Selective laser sintering (SLS) of single component metal powders is a rapid prototyping technology in which a high-energy laser beam scans, melts, shrinks and consolidates metal powders with single component. For better understanding physical mechanisms during laser sintering of single-component metal particles, a temperature transforming model with the consideration of shrinkage and convective flows is introduced to analyze the thermal/fluid behaviors in selective laser sintering of single powder layer. The model is also applied to investigate the sintering of powders on top of existing sintered layers under single- multiple-line scanning manners according to the practical manufacturing processes.
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