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Experimental study on the effect of argon shielding gas on the suppression of nitrogen arc anode ablation

文献类型：期刊论文

作者Hu, Ya-Hao2,3; Meng, Xian2; Huang, He-Ji2; Shao, Ke2,3; Murphy, Anthony B.1; Huang, Kai3; Sun, Su-Rong3; Wang, Hai-Xing3; Meng X(孟显); Huang HJ(黄河激)
刊名JOURNAL OF PHYSICS D-APPLIED PHYSICS
出版日期2022-09-15
卷号55期号:37页码:10
ISSN号0022-3727
关键词nitrogen arc anode ablation arc anode attachment DC arc
DOI10.1088/1361-6463/ac7bb8
通讯作者Meng, Xian(menxian@imech.ac.cn) ; Wang, Hai-Xing(whx@buaa.edu.cn)
英文摘要The high heat flux density of the DC arc often leads to severe anode ablation, which is a key factor limiting the wider use of the DC plasma torches. In this study, a series of comparative experimental studies are conducted with the goal of suppressing nitrogen arc anode ablation by combining argon shielding flow and anode structure. It is found that for the planar electrode structure, the use of argon shielding gas can alleviate the ablation of the anode by nitrogen arc to some extent. If a boron nitride channel is installed on the anode surface to constrain the argon shielding flow, the electrode ablation can be significantly reduced. The experimental results show that there is no significant ablation on the anode surface after 1 h of operation of the nitrogen arc device with an arc current of 100 A. Further analysis reveals that, on the one hand, argon shielding gas can extend the range of motion of the nitrogen arc root along the anode surface and increase the speed of arc root motion, which has the effect of expanding the time-averaged arc anode attachment area. On the other hand, argon shielding gas can also increase the size of the nitrogen arc root and decrease the temperature of the arc root. The use of constraining channels can effectively control the range of motion of the arc root along the anode surface and strengthen the influence of argon shielding gas. The combination of these effects can substantially suppress the anode ablation of the DC arc device.
WOS关键词MAGNETICALLY ROTATING ARC ; PLASMA JETS ; ATTACHMENT ; SIMULATION
资助项目National Natural Science Foundation of China[11735004] ; National Natural Science Foundation of China[12175011] ; National Natural Science Foundation of China[12005010] ; State Key Laboratory of High-temperature Gas Dynamics, Chinese Academy of Sciences[2021KF08]
WOS研究方向Physics
语种英语
WOS记录号WOS:000820845000001
资助机构National Natural Science Foundation of China ; State Key Laboratory of High-temperature Gas Dynamics, Chinese Academy of Sciences
源URL[http://dspace.imech.ac.cn/handle/311007/89685]  
专题力学研究所_高温气体动力学国家重点实验室
通讯作者Meng, Xian; Wang, Hai-Xing
作者单位1.CSIRO Mfg, POB 218, Lindfield, NSW 2070, Australia
2.Chinese Acad Sci, Inst Mech, Beijing 100190, Peoples R China
3.Beihang Univ, Sch Astronaut, Beijing 100191, Peoples R China
推荐引用方式
GB/T 7714		 Hu, Ya-Hao,Meng, Xian,Huang, He-Ji,et al. Experimental study on the effect of argon shielding gas on the suppression of nitrogen arc anode ablation[J]. JOURNAL OF PHYSICS D-APPLIED PHYSICS,2022,55(37):10.
APA Hu, Ya-Hao.,Meng, Xian.,Huang, He-Ji.,Shao, Ke.,Murphy, Anthony B..,...&黄河激.(2022).Experimental study on the effect of argon shielding gas on the suppression of nitrogen arc anode ablation.JOURNAL OF PHYSICS D-APPLIED PHYSICS,55(37),10.
MLA Hu, Ya-Hao,et al."Experimental study on the effect of argon shielding gas on the suppression of nitrogen arc anode ablation".JOURNAL OF PHYSICS D-APPLIED PHYSICS 55.37(2022):10.

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来源：力学研究所

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