Numerical simulation on effect of outer layer gas flow rate and coupling degree on arc characteristics of GPCA-TIG welding | |
Huang, Yong; Lu, Suzhong; Wang, Xinxin; Li, Hui | |
刊名 | Hanjie Xuebao/Transactions of the China Welding Institution
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2016-06-25 | |
卷号 | 37期号:6页码:69-74 |
关键词 | Anodes Cathodes Chemical activation Conservation Gas welding Gases Heat flux Inert gas welding Oxygen Activating TIG welding Arc characteristics Axisymmetric modeling Coupling degree GPCA-TIG welding Maximum temperature Shielding gas Species conservations |
ISSN号 | 0253360X |
英文摘要 | A two-dimensional axisymmetric model for Gas Pool Coupled Activating TIG welding is established based on the MHD theory and species conservation. Arc plasma coupled with cathode is numerically simulated by simplified cathode sheath model. By solving this model, the distributions of temperature, oxygen, current density and heat flux at anode surface under different outer layer gas flow and coupling degree are obtained. The results show that the arc of gas pool coupled activating TIG welding constricts, the velocity of plasma and arc pressure at anode surface increase compared with TIG arc under the same conditions. Increasing the flow rate of oxygen or the coupling degree, the maximum temperature of arc rises, the trend of oxygen diffuses into arc is more obvious, the welding arc constricts slightly, the peak values of current density and heat flux at anode surface all increase. © 2016, Editorial Board of Transactions of the China Welding Institution, Magazine Agency Welding. All right reserved. |
语种 | 中文 |
出版者 | Harbin Research Institute of Welding |
内容类型 | 期刊论文 |
源URL | [http://ir.lut.edu.cn/handle/2XXMBERH/112437] ![]() |
专题 | 材料科学与工程学院 |
作者单位 | State Key Laboratory of Advanced Processing and Recycling of Non-ferrous Metals, Lanzhou University of Technology, Lanzhou; 730050, China |
推荐引用方式 GB/T 7714 | Huang, Yong,Lu, Suzhong,Wang, Xinxin,et al. Numerical simulation on effect of outer layer gas flow rate and coupling degree on arc characteristics of GPCA-TIG welding[J]. Hanjie Xuebao/Transactions of the China Welding Institution,2016,37(6):69-74. |
APA | Huang, Yong,Lu, Suzhong,Wang, Xinxin,&Li, Hui.(2016).Numerical simulation on effect of outer layer gas flow rate and coupling degree on arc characteristics of GPCA-TIG welding.Hanjie Xuebao/Transactions of the China Welding Institution,37(6),69-74. |
MLA | Huang, Yong,et al."Numerical simulation on effect of outer layer gas flow rate and coupling degree on arc characteristics of GPCA-TIG welding".Hanjie Xuebao/Transactions of the China Welding Institution 37.6(2016):69-74. |
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