| 直流正接MAG焊电弧及熔滴过渡特性 |
| |
| 引用本文： | 华爱兵,殷树言,陈树君,白韶军,张晓亮. 直流正接MAG焊电弧及熔滴过渡特性[J]. 机械工程学报, 2010, 46(6). DOI: 10.3901/JME.2010.06.134 |
| |
| 作者姓名： | 华爱兵 殷树言 陈树君 白韶军 张晓亮 |
| |
| 作者单位： | 1. 北京中电华强焊接工程技术有限公司,北京,100076
2. 北京工业大学机械工程及应用电子技术学院,北京,100124 |
| |
| 摘 要： | 借助高速摄像手段研究不同保护气氛下(Ar+CO2和Ar+O2)、不同焊接电流大小的直流正接MAG焊的电弧及熔滴过渡特性,分析电弧烁亮球的成因及其对直流正接MAG焊接过程稳定性的影响特点,并在此基础上确立直流正接MAG焊的工艺区间,同时比较焊丝极性对MAG焊焊丝熔化系数的影响。试验结果表明,当保护气体采用Ar+CO2时,熔滴过渡方式基本上呈大滴排斥过渡,焊接过程不稳,飞溅较大,难以应用;当保护气体采用98%Ar+2%O2时,稳定的直流正接MAG焊的熔滴过渡方式可分为小电流滴状过渡和大电流射流过渡,其中前者为下垂滴状过渡,并且熔滴尺寸随着焊接电流的增大而减小,而熔滴过渡频率相应提高,后者的电弧烁亮区分为上下相串联的两部分,调节电弧电压可以控制电弧烁亮球的活动范围并能改善焊接过程的稳定性。
|
| 关 键 词： | 直流正接 射流过渡 电弧烁亮球 焊丝熔化系数 |
Arc and Drop Transfer Behaviors of MAG Welding Process with Direct Current Electrode Negative |
| |
| HUA Aibing,YIN Shuyan,CHEN Shujun,BAI Shaojun,ZHANG Xiaoliang. Arc and Drop Transfer Behaviors of MAG Welding Process with Direct Current Electrode Negative[J]. Chinese Journal of Mechanical Engineering, 2010, 46(6). DOI: 10.3901/JME.2010.06.134 |
| |
| Authors: | HUA Aibing YIN Shuyan CHEN Shujun BAI Shaojun ZHANG Xiaoliang |
| |
| Affiliation: | 1.Wise Welding Technology & Equipment Co./a>;Ltd./a>;Beijing 100076/a>;2.Mechanical Engineering and Applied Electronics Technology/a>;Beijing University of Technology/a>;Beijing 100124 |
| |
| Abstract: | By using the high speed camera,the arc and drop transfer behaviors of direct current electrode negative MAG welding process with different protecting atmospheres and different welding current levels are researched.The formation reason of bright arc ball and its influence on the stability of MAG welding process are analyzed.On this basis,the process interval of direct current electrode negative MAG welding is determined.Also the influences of wire polarity on wire melting coefficient are compared.By using 80... |
| |
| Keywords: | Direct current electrode negative Streaming transfer Bright arc ball Wire melting coefficient |
| 本文献已被 CNKI 万方数据 等数据库收录！ |
|
