Original title:
Properties of Novel Hybrid Water-Gas DC Arc Plasma Torch
Authors:
Chráska, Tomáš ; Hrabovský, Milan ; Glanc, Aleš ; Mušálek, Radek ; Medřický, Jan Document type: Papers Conference/Event: Workshop on thermal spray and laser clad coatings: Coatings for high temperaure applications, Plzeň (CZ), 2014-10-14 / 2014-10-15
Year:
2014
Language:
eng Abstract:
A new type of plasma torch with combined stabilization of electric arc by water vortex and gas flow is presented. This hybrid water/gas stabilization offers the possibility of adjusting plasma jet parameters within a wide range from high-enthalpy low-density plasmas typical for liquid stabilized torches to lower enthalpy higher density plasmas generated in gas stabilized torches. Moreover, gas flow in the cathode part protects a cathode tip and thus a consumable graphite cathode used in water-only stabilized plasma torches could be replaced by a fixed tungsten cathode. Examples of hybrid WSP torch utilization for high temperature application are given.
Keywords:
Plasma Torch; Water-Gas Host item entry: Electronic Proceedings of ETSA workshop 2014: Coatings for high temperature applications, ISBN 978-80-261-0433-9