Patent ID: 8771437

Claim:
A method for detecting the wear of a cutting nozzle ( 2 ) on a cutting torch ( 1 ) for cutting steel workpieces, characterised in that a branch line ( 16 ) exits to the cutting torch ( 1 ) in a feed line ( 9 ) of a heating gas connection ( 3 ), into which branch line a neutral medium with a set pressure is blown through the cutting nozzle ( 2 ) after closing medium valves ( 6 , 7 , 8 ) for heating gas, cutting oxygen and heating oxygen, whereas said process is carried out once when installing a new cutting nozzle ( 2 ) for the calibration thereof, and then at set intervals, depending on the usage of the cutting nozzle ( 2 ), said process is carried out again, in order to determine and to store in memory the wear condition of the cutting nozzle ( 2 ) and to generate an optical and/or acoustic signal in case a predetermined maximum admissible deviation amount of the medium blown in has been exceeded.