| 摘要 |
PROBLEM TO BE SOLVED: To prolong the life of a nozzle, and to stabilize cutting quality. SOLUTION: In this torch device, an electrode 5 provided at almost axial center part in a torch main body 3, a pilot arc nozzle 9 is provided below the electrode 5 to be away from an insulating body 7 attached to the electrode 5, and an orifice nozzle 11 is provided below the pilot arc nozzle 9 and is attached to at the tip of the torch main body 3. The pilot arc nozzle 9 and the orifice nozzle 11 are separated from each other, and the orifice nozzle 11 is made of ceramics. |
