Two-dimensional heat transfer study on the keyhole plasma arc welding process
Two-dimensional heat transfer study on the keyhole plasma arc welding process
复制标题
DOI：
10.1016/0017-9310(88)90250-5
复制
发表时间：
1988-07
影响因子：
5.2
通讯作者：
Y. Hsu;B. Rubinsky
中科院分区：
文献类型：
--
作者：
Y. Hsu;B. Rubinsky
本文提出了一种二维准静态有限元数值模型，用于研究金属板定行程小孔等离子弧焊过程中的流体流动和换热现象。在该模型中，开发了牛顿-拉夫森迭代程序，以准确识别焊接过程中的固液界面位置。应用有限元方法对AISI 304不锈钢典型小孔焊接工艺进行了研究。结果表明，该方法可以预测焊接参数对熔池形状的影响，熔合区和热影响区宽度随焊接速度的增加而减小，焊接所需功率随焊接速度的增加而增加。
This paper presents a two-dimensional, quasi-stationary finite element numerical model to study the fluid flow and the heat transfer phenomena which occur during constant travel speed, keyhole plasma arc welding of metal plates. A Newton-Raphson iteration procedure was developed in this model to accurately identify the solid-liquid interface location during welding. The finite element method was applied to the study of typical keyhole welding process of an AISI 304 stainless plate. The results show that the method can be used to predict the shape of the welding pool as a function of welding parameters and that the widths of both the fusion zone and the heat effected zone decrease as the welding speed increases while the power required for welding increases with an increase in welding speed.