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高温材料处理:国际期刊
SJR: 0.137 SNIP: 0.341 CiteScore™: 0.43

ISSN 打印: 1093-3611
ISSN 在线: 1940-4360

高温材料处理:国际期刊

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

ABSTRACT

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