【摘要】 从等离子电弧力的角度 ,探讨了等离子弧焊接工艺参数及其匹配的内在联系与规律性。在不同工艺条件下 (焊接电流、等离子气流量、电极内缩量以及喷嘴高度 )对等离子电弧轴向力进行了测量。并通过显著性分析 ,定量地认识和描述了各工艺参数对电弧轴向力的作用和影响。进而指出了获得稳定的小孔型等离子弧焊接过程的必要条件。本文的工作对于等离子弧焊接工艺参数的匹配及其过程的优化有重要的指导意义。更多还原

【Abstract】 The axial force in plasma arc is measured under different welding conditions. The effects of the parameters, such as welding current, plasma gas flow rate, electrode setback and nozzle height, on the force in plasma arc are investigated and quantitatively analyzed by significance test method. It reveals the relationship between the weld quality and the matching of parameters in plasma arc welding process. The necessary conditions to obtain stable keyhole plasma arc welding process are also discussed in this paper. This work may be as a useful tool for the understanding of the parameters matching and process optimization in plasma arc welding.更多还原