首页> 外文期刊>Transactions of the Japan society for aeronautical and space sciences >Butt Welding Experiment on Aluminum Pipe using a Space Gas Hollow Tungsten Arc Welding Process with a Filler Wire Feed in a Simulated Space Environment
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Butt Welding Experiment on Aluminum Pipe using a Space Gas Hollow Tungsten Arc Welding Process with a Filler Wire Feed in a Simulated Space Environment

机译:在模拟空间环境中使用填充气体送丝的空间气体空心钨极电弧焊工艺对铝管进行对接焊接实验

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摘要

Gas hollow tungsten arc (GHTA) welding experiments on aluminum pipe were performed in a simulated space environment and in a vacuum at 1 G. Square butt welding joints with a non-root gap on aluminum pipes were formed by orbital welding with filler metal using a pulsed DC power supply in a vacuum chamber under 10~(-2) G and 1 G gravity conditions. The butt welding process during aluminum-pulsed DC GHTA welding with a filler metal was investigated by analyzing images obtained using a high-speed video camera. In addition, the macrostructure and mechanical properties of the butt welding joints were investigated. The results revealed that arc discharge and melting-solidification during pulsed DC GHTA welding were insensitive to the gravity conditions because welding is strongly affected by the impulsive arc pressure generated by the peak current. In addition, GHTA welding experiments performed in a simulated space environment demonstrated that pulsed DC GHTA welding with a filler metal can produce defect-free aluminum butt welding joints with sufficiently high strength.
机译:在模拟的空间环境中和在1 G的真空下对铝管进行气体空心钨极电弧(GHTA)焊接实验。铝管上的无填充间隙的方形对接焊缝是通过使用填充金属进行轨道焊接而形成的。在10〜(-2)G和1 G重力条件下在真空室中提供脉冲直流电源。通过分析使用高速摄像机获得的图像,研究了铝脉冲DC GHTA与填充金属焊接过程中的对接焊接过程。此外,还研究了对接焊缝的宏观结构和力学性能。结果表明,脉冲直流GHTA焊接过程中的电弧放电和熔化凝固对重力条件不敏感,因为焊接受到峰值电流产生的脉冲电弧压力的强烈影响。此外,在模拟空间环境中进行的GHTA焊接实验表明,使用填充金属进行脉冲式DC GHTA焊接可以产生强度足够高的无缺陷铝对接焊缝。

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