片状偏钨极氩弧载流区的静电探针分析

李渊博; 芦甜; 朱亮; 孙喆

片状偏钨极氩弧载流区的静电探针分析

1.
西安石油大学材料科学与工程学院, 西安 710065
2.
兰州理工大学省部共建有色金属先进加工与再利用国家重点实验室, 兰州 730050

基金项目: 国家自然科学基金资助项目(51264026);陕西省教育厅专项科研计划项目资助项目(15JK1575);国家级大学生创新创业项目资助项目(201410705029);西安石油大学博士科研启动项目资助项目(2015BS19);西安石油大学大学生科研训练计划资助项目

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- 收稿日期: 2014-03-09

Electrostatic probe analysis of current-carrying region of sheet slanting tungsten electrode arc

1.
College of Materials Science and Engineering, Xi'an Shiyou University, Xi'an 710065, China
2.
State Key Laboratory of Advanced Processing and Recycling of Non-ferrous Metals, Lanzhou University of Technology, Lanzhou 730050, China

摘要

摘要: 为保证窄间隙焊接钨极的载流能力,采用截面为矩形的片状偏钨极,并通过低扰动静电探针对片状偏钨极氩弧载流区形态及电流密度分布进行分析. 结果表明,偏钨极前端斜边倾角在3°~8°时,能够对电流产生有效的导向作用,并造成电流密度分布更加集中; 相同焊接工艺参数下与圆柱钨极氩弧相比,片状偏钨极氩弧具有更大的载流区截面积及更小的电流密度;随着焊接电流的增加,载流区将获得更大的电流密度,且在靠近电弧截面中心的区域内电弧能量更加集中.
- 片状偏钨极氩弧 /
- 电弧载流区 /
- 电流密度 /
- 静电探针
Abstract: The sheet slanting tungsten electrode with rectangular section is employed to ensure application of great welding current for narrow gap welding process. The shape and current density distribution of arc current-carrying region can be analyzed by the low disturbance electrostatic probe. The results show that the sheet slanting tungsten electrode make the current density distribution more concentrate with 3~8° of hypotenuse tilt angle; because the current-carrying region section area of sheet slanting tungsten electrode arc is larger than that of cylinder tungsten electrode arc under the same welding parameters, the current density of sheet slanting tungsten electrode arc is smaller; the current density increased with larger welding current, and the heat concentrated near the center of current-carrying region section.
- sheet slanting tungsten electrode arc /
- arc carrying-current region /
- current density, electrostatic probe

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参考文献(10)

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片状偏钨极氩弧载流区的静电探针分析

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Electrostatic probe analysis of current-carrying region of sheet slanting tungsten electrode arc

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