A Theoretical and Experimental Investigation of Ti Alloy Powder Production Using Low-Power Plasma Torches


Ünal R. , Yurtkuran E.

Transactions Of Nonferrous Metals Society Of China, vol.2021, pp.112-118, 2021 (Journal Indexed in SCI Expanded)

  • Publication Type: Article / Article
  • Volume: 2021
  • Publication Date: 2021
  • Title of Journal : Transactions Of Nonferrous Metals Society Of China
  • Page Numbers: pp.112-118

Abstract

This study was carried out to investigate the possibility of titanium alloy metal powder production using lowpower
plasma torches. An argon DC non-transferred arc plasma torch was designed, and numerical analysis was
conducted to determine the plasma jet properties and wire temperature. The highest velocities inside the nozzle
attachment were between 838 m/s and 1178 m/s. The velocities of the jets at the apex were between 494 and
645 m/s for different gas flow rates. The studied plasma gas flow rates had no significant effect on the effective
plasma jet length. It was shown that the plasma jet length can be estimated by numerical analysis using the
temperature and velocity change of the plasma jet over distance. It was observed that the powders produced were
spherical without any satellites. As a result of this study, a plasma torch was developed and powder production
was performed successfully by using relatively low torch power.