Název: Influence of Cathode and Nozzle Wear on Distributions of Fluctuations in Cutting Arc
Autoři: Gruber, Jan ; Šonský, Jiří ; Hlína, Jan
Typ dokumentu: Příspěvky z konference
Konference/Akce: Symposium on Physics of Switching Arc /20./, Nové Město na Moravě (CZ), 2013-09-02 / 2013-09-06
Rok: 2013
Jazyk: eng
Abstrakt: Electric arc produced by cutting plasma torch was observed by CCD camera. Fluctuations in arc plasma intensity were examined in several frequency intervals up to 50 kHz and distributions of their intensities were compared. Plasma torch was operated repeatedly in fixed-time cycles resulting in progressive wear of cathode and nozzle. Changes in distribution of overall arc intensity are rather small, showing compression and expansion zones. However, distributions of fluctuations intensities differ significantly during the nozzle lifecycle, exhibiting formation of double-layer structure and other noticeable changes. The fluctuation distributions are also influenced by frequency interval chosen for the analysis.
Klíčová slova: fluctuations; nozzle lifecycle; plasma cutting
Zdrojový dokument: XXth Symposium on Physics of Switching Arc, ISBN 978-80-214-4753-0

Instituce: Ústav termomechaniky AV ČR (web)
Informace o dostupnosti dokumentu: Dokument je dostupný v příslušném ústavu Akademie věd ČR.
Původní záznam: http://hdl.handle.net/11104/0224943

Trvalý odkaz NUŠL: http://www.nusl.cz/ntk/nusl-156683


Záznam je zařazen do těchto sbírek:
Věda a výzkum > AV ČR > Ústav termomechaniky
Konferenční materiály > Příspěvky z konference