摘要
本文进行了纵向磁场约束等离子弧加工试验，并分析了受约束等离子弧的加工质量，阐述了纵向磁场约束等离子弧的机理。
In this paper. the idea of the plasma arc restricted by the axis magnetic field is advanced and the experiments are done. We give an analysis on the machinin quality of restricted plasma arc, and then narrate the principle of thd plasma arc restricted by axis magnetic field.
