A Simple and Accurate 3D Numerical Model for Laser Cladding
A Simple and Accurate 3D Numerical Model for Laser Cladding
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DOI：
10.1017/jmech.2019.30
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发表时间：
2020-02
影响因子：
1.7
通讯作者：
Shih-Kai Chien;Kuochen Tsai;Yueh-Heng Li;Yu Ting Wu;Wen Lih Chen
中科院分区：
文献类型：
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作者：
Shih-Kai Chien;Kuochen Tsai;Yueh-Heng Li;Yu Ting Wu;Wen Lih Chen
提出了一种简单的激光熔覆数值模型。该模型不涉及复杂的技术，如细胞添加，移动网格，或规定一个包层轮廓与一定的多项式函数。相反，质量函数已被引入到注册的基板上的熔覆质量沉积，并从其中的熔覆轨道高度可以估计。该模型需要几个操作参数，激光功率，激光头速度，和熔覆粉末进料速率，考虑和预测熔覆轨道的几何形状，稀释，和基板温度。采用两种不同的基体和包覆粉末材料的组合，进行了铺设单道和多道包覆轨迹的实验，为模型的验证提供了数据。结果表明，该模型返回与实验包层轮廓单道和多道。
A simple numerical model has been proposed for laser cladding. The model does not involve complex techniques such as cell addition, moving mesh, or prescribing a clad profile with a certain polynomial function. Instead, a mass function has been introduced to register the clad mass deposition on substrate, and from which the clad-track height can be estimated. The model takes several operational parameters, laser power, laser-head speed, and clad powder feeding rate, into consideration and predicts clad-track geometry, dilution, and substrate temperature. Experiments using two different combinations of substrate and clad powder materials to lay single and multiple clad tracks were conducted to provide data for model validation. The results show that the present model returns good agreement with experimental clad profiles for single and multiple tracks.