112 高負荷用浸炭歯車の開発に関する研究 : Cr-Mo-Si 鋼の機械的性質と面圧強さ

概要

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In order to develop the case-carburized gear for the high load-carrying capacity, the relation between the mechanical property of material and the surface durability of gear was studied. The experimental materials were the Cr-Mo-Si steel that the silicon was increased in chemical compositioin and the JIS Cr-Mo steel. First, the influence of temperature on the mechanical property of material was examined by means of a heating oil bath. Secondly, the effect of material on the surface durability of the gear was investigated by using a 2-roller-type contact fatigue tester. In the Cr-Mo-Si steel test rollers, the following results are obtained in comparison with the Cr-Mo steel test rollers : (1) The decrease value of hardness is low in the heat pattern with the high temperature. (2) The large pit and the spall do not occur under the rolling/sliding contact condition. (3) The endurance limit (the spalling life) is improved.
社団法人日本機械学会の論文
2003-04-18