Influence of Surface Polishing of Steel Plate on Adhesion/Heap Behaviour of Silica Powder(Machine Elements, Design and Manufacturing)

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  • シリカ粉体の付着・堆積挙動に及ぼす鋼板表面研磨処理の影響(機械要素,潤滑,設計,生産加工,生産システムなど)
  • シリカ粉体の付着・堆積挙動に及ぼす鋼板表面研磨処理の影響
  • シリカ フンタイ ノ フチャク タイセキ キョドウ ニ オヨボス コウハン ヒョウメン ケンマ ショリ ノ エイキョウ

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In this paper, we examined the relationship between surface roughness and particle adhesion behavior by a proposed experiment. Five kinds of SiO_2 spherical powders (powder diameter: 0.2, 0.5, 1.0, 1.5 and 2.0μm) and stainless steel plates with seven kinds of surface roughness were used for the invetigation. The effect of humidity, electrostatic force and van der Waals force on the particle-steel adhesion behavior was also examined. The experimental results showed that van der Waals force was relatively important to the adhesion behavior compared with two other effects. The adhesion ratios of SiO_2 powders to polished stainless steel plates were measured. The adhesion ratios depend on the surface roughness and the particle diameters. The adhered particles on the steel plate were observed by SEM in order to examine the adhesion mechanism of SiO_2 particle on the polished stainless plate substrate. As the result, 0.4-1.0μm particles were easy to adhere independent of surface roughness and nominal powder diameter. The result indicates that adhesion behavior of powder depends on the adhesion force of 0.4-1.0μm particles that are changed by the surface roughness of the steel plate.

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