Formation of molten droplets at a consumable anode in an electric welding arc
Formation of molten droplets at a consumable anode in an electric welding arc
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电焊弧中自耗阳极处熔滴的形成
DOI：
10.1088/0022-3727/28/8/008
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发表时间：
1995
期刊：
影响因子：
--
通讯作者：
P. Zhu
中科院分区：
文献类型：
--
作者：
S. W. Simpson;P. Zhu
建立了熔滴在动丝焊条上熔滴形成的理论动力学模型。考虑了实心焊丝电极运动引起的电磁夹持效应、表面张力、重力和动量传递，计算了熔滴形状和尺寸与焊接电流的函数关系。我们的计算从人造圆柱形液柱开始，在小电流的情况下，液滴会发展成接近球形的液滴。然而，对于高于约250A的电流，磁箍缩缩柱，从而形成较小的细长液滴。
A theoretical dynamic model has been developed to predict the formation of molten droplets on a moving wire electrode in a gas metal welding arc. Calculations have been made of the droplet shape and size as a function of the welding current by accounting for the electromagnetic pinch effect, surface tension, gravitation and momentum transfer due to motion of the solid wire electrode. Our calculations start with an artificial cylindrical liquid column which, for low currents, develops into a droplet which is close to spherical. However, for currents above about 250 A, the magnetic pinch constricts the column such that a smaller elongated droplet is formed.
DOI：
10.1088/0022-3727/18/7/030
发表时间：
1985-07
期刊：
Journal of Physics D
影响因子：
--
作者：
C. Allum
通讯作者：
C. Allum