METHOD AND DEVICE FOR EXTENDING SERVICE LIFE OF PLASMA-ARC BURNER Russian patent published in 2018 - IPC H05H1/34 B23K10/00 

FIELD: welding or cutting by means of a plasma.

SUBSTANCE: invention relates to the field of plasma arc treatment. Method for providing an extended life of an electrode in a plasma arc burner comprises the thermocycling of an electrode having a housing with a first end and a second end and having an elongated emitter mounted inside the cavity in the surface of the first end of the electrode housing during operation of the plasma arc burner by emitting a plasma arc from the emitter and cooling the emitter. Thermocycling includes: (i) forming a recess on the exposed surface of the emitter by melting part of the emitter and (ii) advancing the emitter from the second end to the first end of the electrode such that the advance of the emitter to said first end is greater than the growth of the recess with respect to said surface, wherein the second end of the emitter is advanced to the surface of the electrode during the cycles so that the second end of the emitter advances at least 0.6 mm to the surface.

EFFECT: technical result is longer service life of the electrode.

17 cl, 9 dwg