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首页> 外文期刊>International Journal of Heat and Mass Transfer >Arc interaction and molten pool behavior in the three wire submerged arc welding process
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Arc interaction and molten pool behavior in the three wire submerged arc welding process

机译：三线埋弧焊过程中的电弧相互作用和熔池行为

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摘要

A three-dimensional numerical heat transfer and fluid flow model is developed to understand the temperature distribution and molten pool behavior in a three wire submerged arc welding process. The model solves the equations of the conservation of mass, momentum, and energy along with the volume of fluid method. The volume of fluid method is used to track the shape of the free surface. Further, a physical model is developed to estimate the arc center displacement. For a given welding condition, connecting the leading electrode with direct current electrode positive polarity, the middle and trailing electrodes with trapezoidal alternating current waveform displayed deeper weld pools when compared to the sine waveforms. Within the range of welding conditions considered in the present work, weld width is significantly influenced by the leading arc whereas the penetration by the middle and trailing arcs. The computed weld width and penetration are in fair agreement with the corresponding experimental results.
机译：建立了三维数值传热和流体流动模型，以了解三丝埋弧焊过程中的温度分布和熔池行为。该模型解决了质量，动量和能量守恒方程以及流体体积方程。流体体积法用于跟踪自由表面的形状。此外，开发了物理模型来估计电弧中心位移。对于给定的焊接条件，与正弦波形相比，将前导电极与直流电极正极相连，中间和尾端电极具有梯形交流波形显示出更深的熔池。在当前工作中考虑的焊接条件范围内，焊接宽度受到前电弧的显着影响，而中间电弧和尾随电弧的熔深。计算得出的焊缝宽度和熔深与相应的实验结果完全吻合。

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