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 |
| DOI | 10.1088/0022-3727/42/9/095208 |
| 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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