METHOD OF CHECKING ELECTRODE WEAR Russian patent published in 1996 - IPC

FIELD: plasma cutting systems. SUBSTANCE: method of controlling cathode wear of a cutting plasmatron, comprising steps of measuring current values of operating parameters of the plasmatron and comparing them with reference values, also includes steps of using as a current parameter of operation of the plasmatron a temperature of cooling liquid at inlet and at outlet of the plasmatron and using as reference a value, being calculated with use of formula Δt_et= (2 ± 0,3)•Δt_s, where Δt_et - a reference temperature difference at the inlet and at the outlet of the plasmatron with a worn cathode, Δt_s - a temperature difference of the cooling liquid at the inlet and a an outlet of a plasmatron with a new cathode. EFFECT: enhanced serviceability. 1 cl, 3 dwg