探讨使用低功率等离子体炬生产钛合金金属粉末的可能性.设计一种氩气直流非转移电弧等离子体炬,并对其等离子体射流特性和导线温度进行数值分析.喷嘴附件内的最高射流速度为838～1178 m/s,不同气体流速下顶点处的射流速度为494～645 m/s.等离子体气体流速对有效等离子体射流长度无显著影响.利用等离子体射流的温度和速度随距离的变化,可通过数值分析预测等离子体射流的长度.所制备的粉末为球形,无卫星粉.总之,本研究开发并使用低功率等离子体炬成功生产了钛合金粉末.“,”This study was carried out to investigate the possibility of titanium alloy metal powder production using low-power 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 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 changes 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.