Plasma torch of non-transferred and hollow type

摘要

Disclosed is a non-transferred and hollow type plasma torch 100. The plasma torch includes a rear torch unit 10 and a front torch unit 20 which are connected through an insulating body 30. The insulating body 30 is made of an insulator, is injected with gas required to generate plasma, and includes an inflow chamber 34 that may move the injected gas. The rear torch unit 10 coupled with a rear side of the insulation body 30 communicates with the inflow chamber 34 of the insulating body 30 and has a magnetic coil generating a magnetic field within a cavity of the rear electrode 19 wound around an outer circumferential surface thereof. The front torch unit 20 disposed at a front side of the insulating body 30 so as to face the rear torch unit 10 communicates with the inflow chamber 34 of the insulating body 30 and has the front electrode 29 disposed therein. The front torch unit 20 does not include a magnetic coil winding the front electrode 29, and thus may be easily detached from the insulating body 30.