書誌事項
- タイトル別名
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- GHTA Welding Phenomena of an Aluminum Alloy in Vacuum
- アルミニウム ゴウキン ノ シンクウ チュウ デ ノ GHTA ヨウセツ ゲンショウ
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説明
Aluminum alloys that have high specific strengths have been widely used in constructing various space structures including the International Space Station (ISS) and launch vehicles. Considering space applications, a series of welding experiments were performed in vacuum on an aluminum alloy using the GHTA (Gas Hollow Tungsten Arc) welding processes under d. c., a. c., and d. c. - pulsed conditions. Results observed in the GHTA welding experiments performed in vacuum can be summarized as follows:<br> (1) When GHTA welding was performed using a commercial a. c. welding machine, the arc discharge did not occur during the electrode positive polarity of alternating current. As a result, it was not possible to remove oxide films from the specimen surface resulting in the cleaning action.<br> (2) During the d. c. - pulsed GHTA process, it was possible to mechanically shatter and remove the oxide films covering the molten pool by the impact of the arc force.<br> (3) A study has been made to determine effects of pulse current during the d. c. pulse welding on characteristics of melting and bead appearances during the d. c. - pulsed GHTA welding.<br> The above-mentioned results show that welding phenomena observed in the experiments performed under vacuum conditions were very different from those observed in the experiments performed in the air.<br>
収録刊行物
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- 溶接学会論文集
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溶接学会論文集 22 (2), 218-223, 2004
一般社団法人 溶接学会
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詳細情報 詳細情報について
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- CRID
- 1390001204726004864
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- NII論文ID
- 110003422420
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- NII書誌ID
- AN1005067X
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- COI
- 1:CAS:528:DC%2BD2cXlvVOms7Y%3D
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- ISSN
- 24348252
- 02884771
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- NDL書誌ID
- 6953248
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- 本文言語コード
- ja
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- データソース種別
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- JaLC
- NDL
- Crossref
- CiNii Articles
- KAKEN
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- 抄録ライセンスフラグ
- 使用不可
