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Inconel 718 laser welding simulation tool based on a moving heat source and phase change

机译：基于移动热源和相变的Inconel 718激光焊接仿真工具

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Modern aerospace industry demands the union of different Inconel 718 parts ensuring the quality of the joint. Therefore, in the present work a novel fiber laser welding model that considers wobbling strategy is developed. The heat source model definition and solid-liquid phase change phenomena are taken into account as bead is considered liquid zone during the melting, getting a robust-but-simple tool for prediction of bead and heat affected zone geometries depending on process parameters. One of the main drawbacks is the maximum welded bead width, which is limited by the beam spot. In order to overcome this handicap, wobbling strategy allows covering a wider area by combining elliptical and linear motions. Optimal relation between these orbital and translation speeds is defined for minimum overlap among consecutive wobble rings. Likewise, temperature rise at welded joint is estimated by existing and modified heat source models after relying on experimental validation.
机译：现代航空航天工业要求结合不同的Inconel 718零件以确保接头质量。因此，在本工作中，开发了一种考虑了摆动策略的新型光纤激光焊接模型。考虑到热源模型定义和固液相变现象，因为在熔化过程中将焊珠视为液态区域，因此获得了功能强大但简单的工具，可根据工艺参数预测焊珠和受热影响区域的几何形状。主要缺点之一是最大焊缝宽度，该宽度受束斑限制。为了克服这一障碍，摆动策略允许通过组合椭圆运动和线性运动来覆盖更大的区域。定义这些轨道速度与平移速度之间的最佳关系，以实现连续摆环之间的最小重叠。同样，在依靠实验验证后，现有和改进的热源模型可以估算焊接接头的温度升高。

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