| 摘要 |
Adhesion and accumulation of spatter onto a covering member that encloses the outer periphery of a torch is minimized and flying of spatter is confined within a narrow area. To this end, a covering member for enclosing a specified angular range of the outer periphery of a plasma torch 9 is provided and an opening portion 35 is formed between every adjacent shielding plates 34 in the covering member. |
