Butt Welding Joint of Aluminum Alloy by Space GHTA Welding Process in Vacuum
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概要
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Aluminum alloys have been used widely in constructing various space structures including the International Space Station (ISS) and launch vehicles. For space applications, welding experiments on aluminum alloy were performed using the GHTA (Gas Hollow Tungsten Arc) welding process using a filler wire feeder in a vacuum. We investigated the melting phenomenon of the base metal and filler wire, bead formation, and the effects of wire feed speed on melting characteristics. The melting mechanism in the base metal during the bead on a plate with wire feed was similar to that for the melt run without wire feed. We clarified the effects of wire feed speed on bead sizes and configurations. Furthermore, the butt welded joint welded using the optimum wire feed speed, and the joint tensile strengths were evaluated. The tensile strength of the square butt joint welded by the pulsed DC GHTA welding with wire feed in a vacuum is nearly equal to that of the same joint welded by conventional GTA (Gas Tungsten Arc) welding in air.
- 2006-02-04
著者
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IMAGAWA Kichiro
Japan Aerospace Exploration Agency
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SUITA Yoshikazu
Department of Mechanical Engineering, Takamatsu National College of Technology
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Suita Yoshikazu
Department Of Electro-mechanical Systems Engineering Takamatsu National College Of Technology
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SHINIKE Shuhei
Advanced Course of Mechanical Electrical Systems Engineering, Takamatsu National College of Technolo
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EKUNI Tomohide
Advanced Course of Mechanical Electrical Systems Engineering, Takamatsu National College of Technolo
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TERAJIMA Noboru
Department of Electro-Mechanical Systems Engineering, Takamatsu National College of Technology
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TSUKUDA Yoshiyuki
Department of Electro-Mechanical Systems Engineering, Takamatsu National College of Technology
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Shinike Shuhei
Advanced Course Of Mechanical Electrical Systems Engineering Takamatsu National College Of Technolog
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Ekuni Tomohide
Advanced Course Of Mechanical Electrical Systems Engineering Takamatsu National College Of Technolog
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Terajima Noboru
Department Of Electro-mechanical Systems Engineering Takamatsu National College Of Technology
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Tsukuda Yoshiyuki
Department Of Electro-mechanical Systems Engineering Takamatsu National College Of Technology
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Suita Yoshikazu
Department Of Electro-mechanical Systems Engineering Kagawa National College Of Technology
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Terajima Noboru
Department Of Electro-mechanical Systems Engineering Kagawa National College Of Technology
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