Title :
High-Speed Imaging of Pilot Arcing and Piercing in PAC
Author :
Colombo, Vittorio ; Concetti, Alessia ; Ghedini, Emanuele ; Dallavalle, Silvano ; Vancini, Mauro
Author_Institution :
Dept. of Mech. Eng. & Res. Centre for Appl. Math., Bologna Univ., Bologna
Abstract :
In this paper, high-speed camera imaging of pilot arcing and piercing process phases in plasma arc cutting (PAC) with dual gas torches have been investigated using mild-steel and stainless-steel plates. The technique has provided new insight of the PAC process, and some interesting phenomena have been highlighted, such as the trajectory and velocity of hafnium particles emitted from the electrode during pilot arcing and the effect of nonperfectly aligned consumables (shield-nozzle) on inducing destructive piercing.
Keywords :
arc cutting; arcs (electric); nozzles; plasma diagnostics; plasma torches; dual gas torches; high-speed camera imaging; mild-steel plates; nonperfectly aligned consumables; pilot arcing; pilot piercing; plasma applications; plasma arc cutting; plasma arc devices; plasma materials-processing applications; plasma torches; shield nozzle; stainless-steel plates; Anodes; Cameras; Cathodes; Electrodes; Plasma applications; Plasma density; Plasma devices; Plasma diagnostics; Plasma materials processing; Plasma simulation; Plasma applications; plasma arc devices; plasma materials-processing applications; plasma torches;
Journal_Title :
Plasma Science, IEEE Transactions on
DOI :
10.1109/TPS.2008.924617
