| 摘要 |
<p>PROBLEM TO BE SOLVED: To provide a torch for an arc processing system, capable of further improving a success probability of an arc start.SOLUTION: A torch for an arc processing system comprises: a nozzle 125 formed with a gas flow space 125a for arranging a nonconsumable electrode 123 and a gas-jetting opening 125b communicating with the gas flow space 125a; and an ionizing conductive part 14 arranged in the nozzle 125. When impressing voltage across a processing object member W1 and the nonconsumable electrode 123, gas G1 in the gas flow space 125a is ionized by an electric field caused by an electric potential difference between the ionizing conductive part 14 and the nonconsumable electrode 123, and in a cross section by a virtual plane orthogonal to an axis Ox of the nozzle 125, the nozzle 125 comprises a first area R1 overlapping with the ionizing conductive part 14 in the circumferential direction T1 of the axis Ox and a second area R2 nonoverlapping with the ionizing conductive part 14 in the circumferential direction T1.</p> |
