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High Temperature Material Processes: An International Quarterly of High-Technology Plasma Processes
ESCI SJR: 0.176 SNIP: 0.48 CiteScore™: 1.3

ISSN Druckformat: 1093-3611
ISSN Online: 1940-4360

High Temperature Material Processes: An International Quarterly of High-Technology Plasma Processes

DOI: 10.1615/HighTempMatProc.v2.i1.60
pages 69-81

DYNAMIC BEHAVIOUR OF A NITROGEN D.C. TRANSFERRED DOUBLE ARC

B. G. Cheron
UMR CNRS 6614, Universite de Rouen - Place Emile Blondel 76821 Mont Saint Aignan Cedex - France
A. Bultel
UMR CNRS 6614, Universite de Rouen - Place Emile Blondel 76821 Mont Saint Aignan Cedex - France
B Maheu
UMR CNRS 6614, Universite de Rouen - Place Emile Blondel 76821 Mont Saint Aignan Cedex - France

ABSTRAKT

The dynamic behaviour of a double transferred arc is experimentally analysed. The arc chamber is equipped with four optical fibers aimed at the observation of arc space-time fluctuations. Terminal voltages and currents are also recorded. A particular low frequency behaviour of the arc is pointed out. It is characterized by erratic skips from rotating to quasi stable fastening on the primary nozzle-shaped anode. In either case the arc root looks rather evenly distributed than located in a definite position. The disappearing of the HF fluctuations when replacing the anode material by a better heat conductor material confirms the important stabilizating role played by the electrode cooling


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