Heat and mass transfer in gas metal arc welding. Part I: The arc
Heat and mass transfer in gas metal arc welding. Part I: The arc
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DOI：
10.1016/j.ijheatmasstransfer.2006.08.025
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发表时间：
2007-03-01
影响因子：
5.2
通讯作者：
Tsai, H. L.
中科院分区：
文献类型：
--
作者：
Hu, J.;Tsai, H. L.
建立了一个统一的综合模型来模拟气体焊接过程中的输运现象。电弧等离子体之间的相互作用耦合；电极熔化；液滴形成、脱离、转移和撞击工件；并考虑了熔池动力学。基于统一模型，对金属气体弧焊过程中的等离子弧特性进行了深入研究。结果表明，熔滴的转移和熔池表面的变形对电流密度、电弧温度和电弧压力的瞬态分布有显著影响，而这些分布通常被认为是恒定的高斯分布。(c) 2006 Elsevier Ltd.版权所有。
A unified comprehensive model was developed to simulate the transport phenomena occurring during the gas metal are welding process. An interactive coupling between arc plasma; melting of the electrode; droplet formation, detachment, transfer, and impingement onto the workpiece; and weld pool dynamics all were considered. Based on the unified model, a thorough investigation of the plasma arc characteristics during the gas metal arc welding process was conducted. It was found that the droplet transfer and the deformed weld pool surface have significant effects on the transient distributions of current density, arc temperature and arc pressure, which were normally assumed to be constant Gaussian profiles. (c) 2006 Elsevier Ltd. All rights reserved.