碳弧气刨温度场的三维有限元模型

A three-dimensional finite element model of temperature field during carbon arc air gouging process

为了分析碳弧气刨过程的温度场分布特征,根据碳弧气刨过程特点,结合"单元死活"技术,建立了一个既考虑电弧热作用又考虑材料去除的碳弧气刨温度场三维有限元模型.在此基础上,对碳弧气刨温度场的特点进行了分析.计算结果表明,电弧强烈的热作用使坡口附近产生了很大的温度梯度,而材料的去除使得该处的温度梯度变得更为剧烈.有限元结果和实验结果对比表明,本文建立的碳弧气刨温度场有限元模型是正确的.

To investigate the characteristics of temperature field in carbon arc air gouging process, a three-dimensional finite element model considering the arc thermal effect and material removal effect was developed to study the temperature field of carbon arc air gouging based on the characteristics of carbon arc air gouging. The results show that a steep temperature gradient is formed near the groove due to the high and intensive arc thermal effect, and the material removal results in a steeper temperature gradient. The comparison of numerical and experimental results proves the validity of the finite element model established in current work.