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

Volume

36

Issue

4

fYear

2008

Firstpage

1042

Lastpage

1043

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;

fLanguage

English

Journal_Title

Plasma Science, IEEE Transactions on

Publisher

ieee

ISSN

0093-3813

Type

jour

DOI

10.1109/TPS.2008.924617

Filename

4598954