| 自保护药芯焊丝立向下焊接熔滴过渡观察与分析 |
| |
| 引用本文： | 刘海云,李国栋,栗卓新,史耀武.自保护药芯焊丝立向下焊接熔滴过渡观察与分析[J].北京工业大学学报,2011,37(8):1212-1216. |
| |
| 作者姓名： | 刘海云 李国栋 栗卓新 史耀武 |
| |
| 作者单位： | 北京工业大学材料科学与工程学院,北京100124／太原理工大学材料科学与工程学院,太原030024;北京工业大学材料科学与工程学院,北京,100124 |
| |
| 摘 要： | 采用高速摄像方法对自保护药芯焊丝的熔滴过渡进行了观察分析发现,自保护药芯焊丝立向下焊接时的熔滴过渡模式为短路过渡、弧桥并存过渡、爆炸过渡和颗粒过渡,弧桥并存过渡是其主要过渡形态.弧桥并存过渡形态包含弧桥并存爆炸过渡和弧桥并存表面张力过渡,前者的主要特征是桥的爆炸,后者则是液相桥和熔池接触,熔滴金属通过表面张力的作用进入熔池.随着电流增加,熔滴尺寸减小,过渡频率增大,弧桥并存过渡和爆炸过渡增加,短路过渡减少.
|
| 关 键 词： | 自保护药芯焊丝 熔滴过渡 立向下焊接 |
Observation and Analysis of Metal Transfer of Self-shielded Flux Cored Wire for Vertical Down Welding Condition |
| |
| LIU Hai-yun,LI Guo-dong,LI Zhuo-xin,SHI Yao-wu.Observation and Analysis of Metal Transfer of Self-shielded Flux Cored Wire for Vertical Down Welding Condition[J].Journal of Beijing Polytechnic University,2011,37(8):1212-1216. |
| |
| Authors: | LIU Hai-yun LI Guo-dong LI Zhuo-xin SHI Yao-wu |
| |
| Affiliation: | LIU Hai-yun1,2,LI Guo-dong1,LI Zhuo-xin1,SHI Yao-wu1(1.College of Material Science and Engineering,Beijing University of Technology,Beijing 100124,China,2.College of Material Science and Engineering,Taiyuan University of Technology,Taiyuan 030024,China) |
| |
| Abstract: | Metal transfer of self-shielded flux cored for vertical down welding condition is studied by using high speed photographic method.The results show that the modes of metal transfer are short circuit transfer,bridging transfer without arc interruption,explosive transfer,and globular transfer.Bridging transfer without arc interruption is the main mode and it also contains two kinds of modes: explosive transfer and surface tension transfer.The characteristic of the former is the explosion of the bridge and the ... |
| |
| Keywords: | self-shielded flux cored wire droplet transfer vertical down welding |
| 本文献已被 CNKI 万方数据 等数据库收录！ |
|
