| 摘要 |
PROBLEM TO BE SOLVED: To execute cutting at one time with one plasma torch so that each cut surface of two cutting pieces becomes vertical state. SOLUTION: The torch T is shifted along a cutting scheduled line of a cutting object material W while turning the plasma flame so as to draw a conical surface by turning the nozzle member 2 in the plasma torch T having a discharging electrode 1, the nozzle member 2, in which the nozzle axis is inclined atθdeg.to the axis Lo of the discharging electrode, in order to jet the plasma with the arc discharge of the discharging electrode, and a gas flowing passage for supplying the gas for plasma into an inner space of the nozzle member.
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