Effect of Lubricant Additives on Scoring-Proof Capability of Gear Oils

JSME international journal. Series 3, Vibration, control engineering, engineering for industry Pub Date : 1992-12-15 DOI:10.1299/JSMEC1988.35.652

K. Ichimaru, Naoshi Izumi, M. Kimura, keishi Kobori

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引用次数: 8

Abstract

Scoring-proof capability and frictional characteristics of oils containing solid lubricants such as molybdenum disulfide and graphite, a S-P-type EP additive and organomolybdenum compounds such as MoDTP and MoDTC were evaluated using atwo-roller machine under a step load condition. In the case of the addition of molybdenum disulfide or graphite, scoring load and frictional conditions, such a scoefficient of friction, surface temperature and the state of oil-film formation, were similar to those of the base oil in which those additives were not added. The addition of the S-P-type EP additive and the organomolybdenum compounds improved the scoring limits. These improvements can be attributed to the formation of substances which inhibit the occurrence of scoring. The substance is insulating and has a high coefficient of friction in the case of the S-P-type EP additivt, while it is conductive and has a low coefficient of friction in the case of organomolybdenum compounds. Two diagrams of the surface temperature-friction coefficient and insulating voltage-friction coefficient clarified the effects of these additives.

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润滑油添加剂对齿轮油防划痕性能的影响

在双辊试验机上，对含二硫化钼、石墨等固体润滑剂、s -p型EP添加剂和MoDTP、MoDTC等有机钼化合物的油品在阶梯加载条件下的防刮擦性能和摩擦特性进行了评价。在添加二硫化钼或石墨的情况下，得分负荷和摩擦条件，如摩擦系数、表面温度和油膜形成状态，与未添加这些添加剂的基础油相似。s - p型EP添加剂和有机钼化合物的加入提高了分数极限。这些改进可归因于抑制得分发生的物质的形成。该物质在s - p型EP添加剂的情况下具有绝缘性和高摩擦系数，而在有机钼化合物的情况下具有导电性和低摩擦系数。表面温度-摩擦系数图和绝缘电压-摩擦系数图阐明了这些添加剂的作用。

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JSME international journal. Series 3, Vibration, control engineering, engineering for industry

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