マイクロバブル水を用いた浸漬洗浄に関する基礎的研究

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タイトル別名
  • Basic Study on Immersion Cleaning Using Microbubble Water
  • マイクロバブルスイ オ モチイタ シンシ センジョウ ニ カンスル キソテキ ケンキュウ

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抄録

<p>　　　Effects of microbubble on immersion cleaning of lubricant oil on a stainless steel plate were investigated to understand basic characteristics for cleaning using microbubble. A stainless steel plate with lubricant oil was immersed in a water tank with microbubble generated using pressurized dissolution method. The immersion cleaning was performed using three kinds of oil with different kinematic viscosity (32, 68 and 220 mm2/s), four surface roughness of the stainless plate (0.047, 3.20, 5.84 and 9.13 μm) and three pH of the cleaning water (4.10, 7.30 and 9.86). In order to understand the removal process of the lubricant oil from the plate, the process was observed using a high-speed camera. The following conclusions were obtained: (1) the cleaning water with microbubble can remove the lubricant oil more than from two to four times of that without microbubble regardless of the oil viscosity, (2) the removal rate increases with decreasing the oil kinematic viscosity, (3) the cleaning water with microbubble can remove the lubricant oil regardless of the surface roughness except for 9.13 μm, (4) the removal rate increases with decreasing the surface roughness of the plate, (5) the cleaning water with microbubble can remove the lubricant oil about two times of that without microbubble regardless of pH of the cleaning water except for 9.86, (6) the oil is removed by the buoyancy force of millimeter order bubble which is formed by coalescence of several small bubbles generated in the oil.</p>

収録刊行物

  • 実験力学

    実験力学 17 (4), 298-303, 2018

    日本実験力学会

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