Method and device for controlling the erosion of the electrodes

Details Method and device for controlling the erosion of the electrodes Method and device for controlling the erosion of the electrodes

1986-04-18

1987-07-28

Paschall, M. H.

Electric heating

Metal heating

By arc

219121PR, 219123, 219121PT, 31511141, 31323151, B23K 1500, B23K 900

Patent

active

046833676

ABSTRACT:
Method and device for controlling the erosion of the electrodes of a plasma torch, in which an electrical arc is produced when the electrodes are connected to an electrical supply. An axial magnetic field generated by a system of field coil causes the rotation of the extremities of the arc according to a circular trajectory inside the electrodes. The relative position of the field coils is such that there exists a position on the electrode surface where the value of the total magnetic field is a minimum where the arc runs thereby controlling the erosion of the electrodes. According to the invention, the value of current is periodically varied in the system of field coil used to cause the rotation of the arc, thereby producing a controlled axial displacement of the circular trajectory of the extremity of the arc. The plasma torch according to the invention is characterized by structure to periodically vary the value of the current in the field coil system used to cause the rotation of the arc thereby producing a controlled axial displacement of the circular trajectory of the extremity of the arc. Under these conditions, the life of the electrodes is substantially increased.

REFERENCES:
patent: 3283205 (1966-11-01), De Bolt
patent: 3654513 (1972-04-01), Hammer
patent: 4194106 (1980-03-01), Rudaz et al.
patent: 4219726 (1980-08-01), Meyer et al.
patent: 4242562 (1980-12-01), Karinsky et al.
patent: 4278868 (1981-07-01), Rudd et al.
patent: 4439657 (1984-03-01), Shimanovich et al.

Affiliated with

Also associated with

Rating

Method and device for controlling the erosion of the electrodes does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Method and device for controlling the erosion of the electrodes , we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Method and device for controlling the erosion of the electrodes will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-2035947