Thermodynamic and Radiative Properties of Plasma Excited in EDM Process Through \hbox Taking Into Account Fe

Thermodynamic and Radiative Properties of Plasma Excited in EDM Process Through \hbox Taking Into Account Fe

After initial discharges in the electrical discharge machining (EDM) process, iron plasma appears due to steel workpiece vaporization. This study deals with the calculation of the thermodynamic properties and net emission coefficient of nitrogen-iron arc plasma. Assuming isothermal plasma in local t...

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Veröffentlicht in:IEEE transactions on plasma science 2012-10, Vol.40 (10), p.2723-2735
Hauptverfasser: Adineh, V. R., Coufal, O., Zivny, O.
Format: Artikel
Sprache:eng
Schlagworte:
Electrical discharge machining (EDM)
Iron
net emission coefficient (NEC)
Nitrogen
nitrogen-iron reaction products
plasma modeling
Plasma physics
Plasma temperature
Radiation
radiative heat transfer
Steel
Temperature distribution
thermodynamic properties
Thermodynamics
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Zusammenfassung:After initial discharges in the electrical discharge machining (EDM) process, iron plasma appears due to steel workpiece vaporization. This study deals with the calculation of the thermodynamic properties and net emission coefficient of nitrogen-iron arc plasma. Assuming isothermal plasma in local thermodynamic equilibrium, the properties are presented according to the typical plasma parameter range of the EDM process, viz., for temperature up to 10 000 K, pressure range of 0.1-1 MPa, different amounts of iron, and several EDM plasma radii. The presence of iron vapor has considerable influence on the thermodynamic and radiative properties of EDM arc plasmas.
ISSN:0093-3813
1939-9375
DOI:10.1109/TPS.2012.2210568