首页> 外文会议>International conference on processing manufacturing of advanced materials;THERMEC 2009 >PHYSICAL AND CHEMICAL MECHANISMS OCCURING DURING A-TIG WELDING: COMPARISON BETWEEN EXPERIMENTAL INVESTIGATIONS AND SIMULATIONS
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PHYSICAL AND CHEMICAL MECHANISMS OCCURING DURING A-TIG WELDING: COMPARISON BETWEEN EXPERIMENTAL INVESTIGATIONS AND SIMULATIONS

机译:A-TIG焊接过程中发生的物理和化学机制:实验研究与模拟之间的比较

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In the present work, TIG and A-TIG welding were compared to show the arc constriction phenomena. A 2D axial symmetric model was developed to simulate the flow behavior in the melting pool. These results were compared to experiments carried out on a stainless steel disc (304L) melted by a stationary heat source. The influence of the Marangoni effect, arc constriction and type of flux is shown. The results point to the importance of the welding parameters and the use of a flux on the characteristics of the weld beads.
机译:在目前的工作中,TIG和A-TIG焊接进行了比较,以显示电弧收缩现象。开发了二维轴向对称模型来模拟熔池中的流动行为。将这些结果与在由固定热源熔化的不锈钢圆盘(304L)上进行的实验进行了比较。显示了Marangoni效应,电弧收缩和助焊剂类型的影响。结果表明焊接参数的重要性以及焊剂在焊道特性上的使用。

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