Plasma welding - pilot arc
Plasma welding - pilot arc
(OP)
Hi All,
I would like to ask You for help in solving a problem with not normal behavior of pilot arc on plasma welding machine.
Short description of the problem: the pilot arc is not stable and flickers. It happens in hard to be defined time and conditions: sometimes just after starting the arc, sometimes the arc is stable for few minutes and then starts to flicker or it happes after performing few welds.
The main parameters of pilot arc:
- pilot gas (argon) flow rate: 0,5-0,7 l/min (1,0-1,5CFH)
- current: 9-10 Amps
Anybody have some ideas what could cause that behavior?
Marek
I would like to ask You for help in solving a problem with not normal behavior of pilot arc on plasma welding machine.
Short description of the problem: the pilot arc is not stable and flickers. It happens in hard to be defined time and conditions: sometimes just after starting the arc, sometimes the arc is stable for few minutes and then starts to flicker or it happes after performing few welds.
The main parameters of pilot arc:
- pilot gas (argon) flow rate: 0,5-0,7 l/min (1,0-1,5CFH)
- current: 9-10 Amps
Anybody have some ideas what could cause that behavior?
Marek





RE: Plasma welding - pilot arc
RE: Plasma welding - pilot arc
usually is a problem of magnetism..
RIC
RE: Plasma welding - pilot arc
Riccardo67, can You plese write something more about this magnetism? What can I chck and how to proove that this is the case?