書誌事項
- タイトル別名
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- Liquid Adhesion at Ultrasonically Vibrating Horn End and Its Application to Casting Process
- チョウオンパ シンドウ タンメン ニ オケル エキタイ フチャク ゲンショウ ト ソノ チュウゾウ プロセス エ ノ オウヨウ
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An ultrasonically vibrating end surface can retain large amount of liquid, the phenomenon of which has been newly discovered by author's group. Amount of adhering liquid linearly increases with vibration amplitude unless the cavitation occurs. At the same amount of adhering liquid, the droplet appearance becomes flatter to the vibrating end surface with an increase in vibration amplitude. The mechanism which allows large amount of liquid adhesion is discussed by focusing on the distribution of radiation pressure in an adhering droplet. The radiation pressure in a droplet exponentially decreases with distance from the horn end surface. A dynamic balance model regarding an adhering droplet was constructed through taking into consideration of the balance of liquid weight. intrinsic surface tension and radiation pressure. The calculated droplet appearance based on the model is good agreement with the experimentally observed one. With dipping and raising-up of an ultrasonically vibrated horn end to molten magnesium alloy, the maximum adhesion attains at 873 K, at which adhering metal is a semi-solid state approved by temperature measurement. Ultrasonic casting of magnesium alloy, in which the adhering molten or semi-solid metal is compressed by the counter molds, was carried out using a high powered ultrasonic transducer for shaping a thin saucer. Cast products are successfully manufactured without appreciable defects, because long molten metal flow is not necessary in the novel casing process.
収録刊行物
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- 鋳造工学
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鋳造工学 77 (11), 752-758, 2005
公益社団法人 日本鋳造工学会
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詳細情報 詳細情報について
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- CRID
- 1390282681483602432
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- NII論文ID
- 130004556524
- 10016761581
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- NII書誌ID
- AN10514770
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- COI
- 1:CAS:528:DC%2BD2MXhtlWgsrnN
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- ISSN
- 21855374
- 13420429
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- NDL書誌ID
- 7729574
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- 本文言語コード
- en
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- データソース種別
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- JaLC
- NDL
- CiNii Articles
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- 抄録ライセンスフラグ
- 使用不可