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.

中文翻译：

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一个简单而准确的激光熔覆 3D 数值模型

已经提出了一种用于激光熔覆的简单数值模型。该模型不涉及复杂的技术，例如单元添加、移动网格或使用特定多项式函数指定包层轮廓。相反，引入了质量函数来记录基板上的包层质量沉积，从中可以估计包层轨道高度。该模型考虑了几个操作参数，激光功率、激光头速度和复合粉末进料速率，并预测复合轨迹几何形状、稀释度和基板温度。进行了使用两种不同的基材和复合粉末材料组合来铺设单个和多个复合轨道的实验，以为模型验证提供数据。