| 摘要 |
PROBLEM TO BE SOLVED: To provide a plasma torch, a plasma spray apparatus and a control method of a plasma torch, which are capable of improving utilization efficiency of a spray material and also capable of suppressing the consumption of an electrode.SOLUTION: A plasma torch 11 according to the present invention includes: a ring-shaped first electrode 32 having a through hole in the center and a projecting part on an outer periphery; a second electrode 41 cylindrically formed to surround the first electrode 32; a first magnet 37 provided rearward of the projecting part of the first electrode 32; a second magnet 42 provided on an outer periphery of the second electrode 41; a spray material introduction pipe 25 slidably provided in the through hole and supplying powder of a spray material on a central axis of the first electrode 37; and a gas supply passage 26 for plasma generation, through which gas 45 for plasma generation is supplied from an outer peripheral side of the first electrode 32 into a discharge space S formed between the first electrode 37 and the second electrode 41.SELECTED DRAWING: Figure 1 |
