李阳;董再胜;孙丽荣;

1:山东建筑大学2:济南钢铁集团

3:莱芜钢铁集团银山型钢有限公司板带厂

     摘要：穿孔等离子弧焊接过程中,小孔的形状和尺寸决定着热源热流密度的分布和温度场的分布,从而影响着焊接过程的稳定性和焊接质量。本文利用四阶Runge-Kutta法求解在小孔壁上的力的控制方程组。数据表明模拟结果与试验观测现象基本吻合。

    关键词： 等离子弧焊;;小孔;;Runge-Kutta法;;模拟

    Abstract: In the process of keyhole plasma arc welding(PAW),the keyhole shape and its dimension determine the thermal energy intensity distribution of the PAW heat source and the temperature profile,which have great effect on the PAW process stability and quality.In this paper,the 4th order Runge-Kutta techniaque is used to solve control equations.The data show that the simulation matches with test results.

     Keywords:Plasma Arc Welding;Keyhole;Runge-Kutta Techniaque;Simulation

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