Influence of Arc Pressure on Weld Pool Geometry
Influence of Arc Pressure on Weld Pool Geometry
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发表时间：
2013
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通讯作者：
M. Lin;T. Eagar
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作者：
M. Lin;T. Eagar
当电流超过 300 安培时，熔池表面变得明显凹陷，平坦表面的假设不再有效。为了预测熔池几何形状，计算了电弧压力作用下表面凹陷的形状。在 300 安培的电流下，发现电弧压力无法解释实验观察到的表面凹陷的深度或形状。相反，提出了一种新的复合涡旋模型作为解释当前范围内深表面凹陷的可能机制。
At currents over 300 amperes, the surface of the weld pool becomes markedly depressed and the assumption of a flat surface is no longer valid. In order to predict the weld pool geometry, the shape of the surface depression under the action of the arc pressure has been calculated. At currents of 300 amperes, it is found that the arc pressure cannot account for either the depth or the shape of the experimentally observed surface depression. Instead, a new model of a compound vortex is proposed as a possible mechanism to explain the deep surface depression in this current range.