高真空および大気中における平歯車の摩擦・摩耗特性 : ステンレス鋼SUS440Cの場合

概要

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To clarify the friction and wear behavior of stainless steel SUS440C spur gears of which the surface layer was thermally diffused after being Sn-plated, a gear test was carried out under grease lubrication in air and in vacuum of about 1〜4×10^<-4> Pa using a power-circulating gear test rig. From the tests, the following results were obtained. (1)The running time at the incipient stage of the destructive surface failure of the gears in air was about 1/2〜2/3 times as small as that in high vacuum. (2)The running time at the incipient stage of the destructive surface failure for the gears with a diffused layer was about 1/3〜1/2 times as small as that for the gears without a diffused layer. (3)For the gears with a diffused layer, a little effect of the molybdenum disulfide additive on running time to the destructive surface failure was recognized. (4)When the test could not be run due to a destructive surface failure of the meshing faces, either ratio of gear frictional loss torque to transmitted torque η or an acceleration due to vibration of the tested gear box α exceeded the value of η=0.03 and α=0.3×gm/s^2. It is possible to detect the degree of the destructive surface failure of the gears by means of the measurements of the frictional loss torque and the acceleration due to vibration of the gear box.
社団法人日本機械学会の論文
2000-01-25