黄銅のアブレシブ摩耗における砥粒の臨界粒径効果に関する研究

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タイトル別名
  • Investigation of the Critical Grit Size Effect on the Abrasive Wear of Brasses
  • オウドウ ノ アブレシブ マモウ ニ オケル トリュウ ノ リンカイ リュウケ

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抄録

It has been found that an important variable that affects the abrasive wear is the size of the abrasive grains. Previous workers have shown that there exsists a minimum abrasive particle size which allows maximum abrasive wear. This critical size effect was studied in this paper.<BR>Experments were performed with various brasses sliding against abrasive clothes, and using conical diamond indenters scratching tests were carried out to simulate an abrasive grain cutting a groove.<BR>The critical size effect is explained by two terms of the true contact area and the material removal ratio. First the true contact area is decreased with the small grit size. Secondly the number of contact points increase with finer abrasive clothes. Therefore the load carried by an abrasive grain is diminished and the penetration depth of an abrasive particle becomes shallower. In this situation the transition from cutting to ploughing occurs, and the material removal ratio is diminished. Consequently, as the abrasive size is increased, there is an initial increase in wear until a certain abrasive size is reached.<BR>As an increase of the applied load leads mainly to an increase of the number of contact points and an abrasive grain acts in the same manner, the value of the critical abrasive grain size is not changed by the applied load.

収録刊行物

  • 日本金属学会誌

    日本金属学会誌 43 (10), 923-929, 1979

    公益社団法人 日本金属学会

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