中国机械工程2024，Vol.35Issue(7)：1188-1193,1204,7.DOI:10.3969/j.issn.1004-132X.2024.07.006
钨极高压微电弧温度模型的建立与验证
Temperature Modeling and Verification of High-voltage Micro-arc with a Tungsten Electrode
摘要
Abstract
In order to improve the success rate of the preparation of monolithic micro tungsten ball tips,the high-voltage micro-arc was studied during the preparation processes.A multi-physics field coupled simulation model of tungsten-pole high-voltage micro-arc was established to calculate the arc temperature distribution at electrode spacing of 0.5～2.0 mm and voltage of 1～12 kV.The simulation results were then subjected to least-squares fitting,and a mathematical model between the arc tem-perature and the discharge parameters was obtained.Finally,the mathematical model was validated by building a spectral temperature measurement system based on the Boltzmann graphing method.The results show that the arc is elliptically distributed,and there is a high temperature barrier in the near-anode region,and the anode temperature is much lower than that of the cathode temperature.The arc temperature has a parabolic relationship with the voltage and electrode spacing.The average relative error between the model calculation results and the experimental results is as 3.3％.The model may be used to calculate the arc temperature for controlled preparation of the tungsten ball tips.关键词
电弧温度/磁流体动力学/Boltzmann作图法/微球形钨探针Key words
arc temperature/magnetogas dynamics/Boltzmann graphing method/micro tungsten ball tip分类
信息技术与安全科学引用本文复制引用
李瑞君,赵亮,姚攀,王勇俊,杨晓婷,夏果,程真英..钨极高压微电弧温度模型的建立与验证[J].中国机械工程,2024,35(7):1188-1193,1204,7.基金项目
国家自然科学基金(52075143) （52075143）
