Numerical simulation of keyhole welding of aluminum thick plate with plasma arc
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- Tashiro Shinichi
- Osaka University Joining and Welding Research Institute
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- Tanaka Manabu
- Osaka University Joining and Welding Research Institute
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- Ueyama Tomoyuki
- DAIHEN Cooperation
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- Era Tetsuo
- DAIHEN Cooperation
Bibliographic Information
- Other Title
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- プラズマアークによるアルミニウム厚板のキーホール溶接の数値シミュレーション
- プラズマアーク ニ ヨル アルミニウム アツイタ ノ キーホール ヨウセツ ノ スウチ シミュレーション
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Abstract
The plasma arc welding can realize high speed welding, deeper weld penetration and, furthermore, samller thermal distortion. For these reasons the plasma arc welding is employed for keyhole welding. However, it has been pointed out that it is difficult to obtain the stability of the welding. In this study, we have developed an unified plasma arc welding model for analyzing the welding mechanism and influence of the torch design and operation conditions of the arc on the welding process. In this paper, the keyhole welding of a thick aluminum plate employing the plasma arc was numerically analyzed for clarifying the mechanism determining the keyhole size which is important for improving the stability of the process. As a result, it was found that keyhole size is determined mainly by a force balance between the surface tension of a weld pool and metal vapor pressure.
Journal
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- Journal of Light Metal Welding
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Journal of Light Metal Welding 48 (4), 119-124, 2010
Japan Light Metal Welding Association
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Details 詳細情報について
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- CRID
- 1390282679087868800
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- NII Article ID
- 130003377371
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- NII Book ID
- AN00314764
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- COI
- 1:CAS:528:DC%2BC3cXmsVOrtro%3D
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- ISSN
- 2186618X
- 03685306
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- NDL BIB ID
- 10673791
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- Text Lang
- ja
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- Data Source
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- JaLC
- NDL
- CiNii Articles
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- Abstract License Flag
- Disallowed