A Study on Friction Loss of Spur Gears. In the Case of Gear Material Combination of Bronze/Steel and Cast Iron/Steel.

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  • 平歯車のかみあい摩擦損失に関する研究　青銅及び鋳鉄の歯車を鋼の歯車と組合せた場合
  • ヒラハグルマ ノ カミアイ マサツ ソンシツ ニ カンスル ケンキュウ セイド

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Abstract

Carbon steel has been used as spur gear material. It is very important to find a way of reducing the friction loss of spur gears, and there are many methods of achieving this. Here we chose the method of selecting material combinations in a wide scope, i. e., not only the steel material, but also the materials of phosphor-bronze and cast iron. furthermore, for steel material, we chose various kind of coatings, that is, nitriding and phosphate coating. As a result, we induced a very low friction loss by using phosphor-bronze gears which were combined with a nitrided gear or a case-hardened gear. Some considerations were carried out for these phenomena.

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