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首页> 外文期刊>Journal of Laser Applications >Keyhole Welding Studies With A Moderate-power, High-brightness Fiber Laser
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Keyhole Welding Studies With A Moderate-power, High-brightness Fiber Laser

机译：中等功率，高亮度光纤激光器的锁孔焊接研究

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摘要

Bead-on-plate welding tests were performed using a 600 W fiber-delivered fiber laser. Uniform, high-aspect-ratio keyhole welds were observed in 1018 low-carbon steel, 1100 aluminum, and 304 stainless steel. The Rosenthal two-dimensional thermal model for a moving-line heat source was effective in predicting weld width for both partial-penetration and full-penetration welds. By setting the temperature at the perimeter of the keyhole equal to the vaporization temperature, this same model provided a first-order estimate of the weld depth for partial-penetration welds, as well. The two-dimensional model was used to calculate the steady-state temperature field associated with the welding process as well as the temporal thermal history of points in the weld pool and in the heat-affected zone next to the weld pool. A comparison of calculated weld-bead geometries with dimensions scaled from micrographs of bead cross sections showed reasonable agreement.
机译：使用600 W光纤传送的光纤激光器进行了珠焊焊接测试。在1018低碳钢，1100铝和304不锈钢中观察到了均匀的高纵横比键孔焊缝。运动线热源的Rosenthal二维热模型可有效预测部分渗透焊缝和全渗透焊缝的焊缝宽度。通过将小孔周边的温度设置为等于汽化温度，该模型也可以对部分渗透焊缝的焊缝深度进行一阶估算。二维模型用于计算与焊接过程相关的稳态温度场以及焊池中以及焊池旁热影响区中点的时间热历史。比较计算的焊缝几何形状和焊缝横截面的显微照片得出的尺寸显示出合理的一致性。

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