The fume produced by air plasma cutting process is concentrated chiefly in a fog-like cone lying beneath the workpiece cut, which is formed by diffusing and being bounced by the ground obstacles.

• 通过实验和理论分析证实了空气等离子切割烟尘分布不同于常规焊接烟尘分布,空气等离子切割烟尘主要起源于在工件割口下方一个雾状锥体中,雾状锥体的扩散以及与地面等阻挡物体之间的碰撞,是形成等离子切割烟尘的主要原因。