Degreasing of Solid Surfaces by Microbubble Cleaning

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著者

    • Miyamoto Makoto Miyamoto Makoto
    • Environmental Technology and Systems Department, Advanced Technology R&D Center, Mitsubishi Electric Corporation, 8-1-1 Tsukaguchi-Honmachi, Amagasaki, Hyogo 661-8661, Japan
    • Ueyama Satoshi Ueyama Satoshi
    • Environmental Technology and Systems Department, Advanced Technology R&D Center, Mitsubishi Electric Corporation, 8-1-1 Tsukaguchi-Honmachi, Amagasaki, Hyogo 661-8661, Japan
    • Saitoh Tadashi
    • Environmental Technology and Systems Department, Advanced Technology R&D Center, Mitsubishi Electric Corporation, 8-1-1 Tsukaguchi-Honmachi, Amagasaki, Hyogo 661-8661, Japan
    • Maekawa Shigeki
    • Structural Technology Department, Manufacturing Engineering Center, Mitsubishi Electric Corporation, 8-1-1 Tsukaguchi-Honmachi, Amagasaki, Hyogo 661-8661, Japan
    • Hirotsuji Junji
    • Environmental Technology and Systems Department, Advanced Technology R&D Center, Mitsubishi Electric Corporation, 8-1-1 Tsukaguchi-Honmachi, Amagasaki, Hyogo 661-8661, Japan

抄録

It is increasingly required to reduce the environmental impact and cost in the field of industrial cleaning. As a substitute for conventional degreasing technology using organic solvents, acids, and alkalis, the authors have developed a new cleaning technology that uses microbubbles having an average diameter of about 70 μm. Grease being adsorbed onto a bubble's surface and grease being separated from a solid surface by its buoyancy were captured using a high-speed microscopic video camera to demonstrate the degreasing capability of bubbles. High-density microbubbles were generated by adding a trace amount of a specific chemical (0.1% weight or less). The cleaning performance using microbubbles was found to be highly improved compared with that using normal bubbles. It was also revealed that the grease removal efficiency was strongly dependent on the viscosity of the grease. Raising the temperature of the cleaning solution is an effective method of improving cleaning performance by reducing the viscosity. Finally, the degreasing of about 150 machining metal parts at the same time was demonstrated to exceed the common target cleaning level (5–20 μg/cm2) in only 2 min because of their large surface area. Furthermore, the high degreasing performance was maintained even after repeated use of the cleaning solution because of the separation of grease due to buoyancy.

収録刊行物

  • Japanese journal of applied physics. Pt. 1, Regular papers & short notes  

    Japanese journal of applied physics. Pt. 1, Regular papers & short notes 46(3A), 1236-1243, 2007-03-15 

    Published by the Japan Society of Applied Physics through the Institute of Pure and Applied Physics

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各種コード

  • NII論文ID(NAID)
    10018867868
  • NII書誌ID(NCID)
    AA10457675
  • 本文言語コード
    EN
  • 資料種別
    ART
  • 雑誌種別
    大学紀要
  • ISSN
    0021-4922
  • NDL 記事登録ID
    8688672
  • NDL 雑誌分類
    ZM35(科学技術--物理学)
  • NDL 請求記号
    Z53-A375
  • データ提供元
    CJP書誌  CJP引用  NDL  JSAP 
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