| 保护气体成分对大电流脉冲MAG焊焊接参数的影响 |
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| 引用本文： | 邢丽,艾盛.保护气体成分对大电流脉冲MAG焊焊接参数的影响[J].南昌航空工业学院学报,1996(2):70-74. |
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| 作者姓名： | 邢丽 艾盛 |
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| 作者单位： | [1]南昌航空工业学院材料工程系 [2]西北工业大学 |
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| 摘 要： | 研究了直流反极性脉冲ＭＡＧ焊在不同配比的Ａｒ＋ＣＯ２，Ａｒ＋Ｏ２时，电弧的静特性、脉冲参数以及形成脉冲旋转喷射过渡临界规范值的变化。结果表明，气体万分及配比不同时，电弧特性曲线位置不同，在其它条件相同的情况下，Ａｒ＋２％Ｏ２的脉冲电流最高，最易形成脉冲旋转喷射过渡；Ａｒ＋２０％ＣＯ２的脉冲电流最低，不能形成脉冲放置喷射过渡。
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| 关 键 词： | 活性保护气体 气体保护焊 电弧静特性 工艺 |
The Influence of Shielding Gas Constitution on the Arc Volt-Amp Characteritics and Droplets Transfer in Pulsed MAG Welding |
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| Xing,Li.The Influence of Shielding Gas Constitution on the Arc Volt-Amp Characteritics and Droplets Transfer in Pulsed MAG Welding[J].Journal of Nanchang Institute of Aeronautical Technology(Natural Science Edition),1996(2):70-74. |
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| Authors: | Xing Li |
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| Abstract: | The arc Volt-Amp characteritics and the critical welding parameters forming pulsed rotating-spray transfer(PRST) in MAG welding with Ar+O 2 and Ar+CO 2 shielding gas were studied. It is shown that the position of the arc VoltAmpcharacteristic curve varied with the shielding gas constitution. The PRST is most easily formed withAr+2%O 2 shielding gas but cannot formed with Ar+20%CO 2 shielding gas. |
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