EP 2371186 B1 20130116 - METHOD OF MONITORING THE WEAR OF AT LEAST ONE OF THE ELECTRODES OF A PLASMA TORCH
Title (en)
METHOD OF MONITORING THE WEAR OF AT LEAST ONE OF THE ELECTRODES OF A PLASMA TORCH
Title (de)
VERFAHREN ZUR ÜBERWACHUNG DER ABNUTZUNG MINDESTENS EINER DER ELEKTRODEN EINES PLASMABRENNERS
Title (fr)
PROCÉDÉ DE CONTRÔLE DE L'USURE D'AU MOINS UNE DES ÉLECTRODES D'UNE TORCHE À PLASMA
Publication
Application
Priority
- EP 2009067418 W 20091217
- FR 0858823 A 20081219
Abstract (en)
[origin: WO2010070051A1] The invention relates to a method of monitoring the wear of at least one of the electrodes (1, 2) of a plasma torch comprising two electrodes (1, 2) having the same principal axis, these electrodes (1, 2) being separated by a chamber (3) for receiving a plasma gas, and at least one means for generating a magnetic field (7) placed locally to said at least one electrode, the purpose of which is to monitor the wear, in which the arc root is swept over a portion of the surface of the electrode starting from an initial position up to the point where said arc root reaches a defined final position on said portion, the longitudinal progression of said arc root being determined by a function dependent on at least time, function f(t), which is fixed. According to the invention, at least the electrical energy consumed by said torch is measured as a function of time from the commissioning of said electrode (1, 2), said measurements are recorded in a storage unit and, based on the temporal variation in at least said consumed electrical energy on at least some of said measurements, a variable ?(t) for adjusting the function f(t) determined over a time period T determined by the state of wear of said electrode (1, 2).
IPC 8 full level
CPC (source: EP US)
H05H 1/34 (2013.01 - EP US); H05H 1/3494 (2021.05 - EP); H05H 1/40 (2013.01 - EP US); H05H 1/3494 (2021.05 - US)
Designated contracting state (EPC)
AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO SE SI SK SM TR
DOCDB simple family (publication)
WO 2010070051 A1 20100624; CA 2745984 A1 20100624; CA 2745984 C 20170725; EP 2371186 A1 20111005; EP 2371186 B1 20130116; FR 2940584 A1 20100625; FR 2940584 B1 20110114; JP 2012514290 A 20120621; JP 5591823 B2 20140917; PL 2371186 T3 20130628; US 2011284504 A1 20111124; US 8502109 B2 20130806
DOCDB simple family (application)
EP 2009067418 W 20091217; CA 2745984 A 20091217; EP 09775220 A 20091217; FR 0858823 A 20081219; JP 2011541444 A 20091217; PL 09775220 T 20091217; US 200913140899 A 20091217