| abstract |
The present invention relates to a nozzle for a plasma torch, in which thennozzle is detachably attached to the plasma torch and has an injection port for injectingna plasma arc formed at the center thereof, the nozzle for a plasma torch comprising:anwater supplying pipe for cooling water; a water draining pipe for the cooling water;annannular water passage arranged around the injection port; and a plurality of connectingnwater passages for independently connecting the water supplying pipe to the annularnwater passage and the water draining pipe to the annular water passage. |