润滑油的技术指标 -题库考试答案搜索网

润滑油的技术指标

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2022-01-21 16:13

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粘度指数：油品的粘度随温度变化的程度，同标准油粘度变化的程度对比的相对值叫粘度指数。值数越高，表示受温度影响越小。
粘度：液体受外力作用移动时，其分子间产生的阻力称为粘度。
闪点：油品在规定条件下，加热到它的蒸汽与周围空气形成混合气，当接触火焰发出闪火时的最低温度。
倾点：指冷却为固态的油品，倾斜放置加温到油品开始移动的最低温度。
SAE级数：美国汽车工程师协会（粘度）
API级数：美国石油协会（质量分类）0w……
齿轮油SAE等级75w……

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