中国科学院机构知识库网格
Chinese Academy of Sciences Institutional Repositories Grid
The effect of plasma-gas swirl flow on a highly constricted plasma cutting arc

文献类型:期刊论文

作者Zhou, Qianhong1; Yin, Huiting2; Li, Hui3; Xu, Xu1; Liu, Feng1; Guo, Shaofeng1; Chang, Xijiang1; Guo, Wenkang1; Xu, Ping1
刊名JOURNAL OF PHYSICS D-APPLIED PHYSICS
出版日期2009-05-07
卷号42页码:9
ISSN号0022-3727
DOI10.1088/0022-3727/42/9/095208
英文摘要Swirl gas is widely used in the plasma arc cutting industry for inducing better plasma column confinement and providing a more stable constricting arc. When the inlet gas swirl number increases, the maximum pressure location moves to the plenum chamber edge due to centrifugal force, and the minimum pressure location moves much closer to the axis. The difference between the maximum and minimum pressure increases with swirl number. The large pressure difference in the radial direction constricts the arc and leads to large current density and Ohm heating near the axis. This causes much higher temperature near the cathode. It is indicated that swirl gas accelerates cathode erosion for two reasons: increasing plenum chamber pressure and changing flow patterns in the vicinity of the cathode. It is also found that the gas with large swirl number leads the swirl velocity component to be larger at the cutting location according to angular momentum conservation. It has been suggested that this causes different bevel angles for the left and right edges of the cutting kerf.
WOS关键词TRANSPORT-COEFFICIENTS ; SPECTROSCOPIC ANALYSIS ; CATHODE EROSION ; TORCH ; OXYGEN ; AIR ; NITROGEN ; FLUID ; ARGON
WOS研究方向Physics
语种英语
WOS记录号WOS:000265531000034
出版者IOP PUBLISHING LTD
源URL[http://119.78.100.186/handle/113462/30703]  
专题中国科学院近代物理研究所
通讯作者Zhou, Qianhong
作者单位1.Fudan Univ, Inst Modern Phys, Plasma Lab, Shanghai 200433, Peoples R China
2.Zhejiang Ocean Univ, Ctr Publ Expt & Comp Network, Zhoushan 316000, Peoples R China
3.Univ Sci & Technol China, Dept Thermal Sci & Energy Engn, Hefei 230027, Peoples R China
推荐引用方式
GB/T 7714
Zhou, Qianhong,Yin, Huiting,Li, Hui,et al. The effect of plasma-gas swirl flow on a highly constricted plasma cutting arc[J]. JOURNAL OF PHYSICS D-APPLIED PHYSICS,2009,42:9.
APA Zhou, Qianhong.,Yin, Huiting.,Li, Hui.,Xu, Xu.,Liu, Feng.,...&Xu, Ping.(2009).The effect of plasma-gas swirl flow on a highly constricted plasma cutting arc.JOURNAL OF PHYSICS D-APPLIED PHYSICS,42,9.
MLA Zhou, Qianhong,et al."The effect of plasma-gas swirl flow on a highly constricted plasma cutting arc".JOURNAL OF PHYSICS D-APPLIED PHYSICS 42(2009):9.

入库方式: OAI收割

来源:近代物理研究所

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