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具有能减少两个固体表面摩擦性质的物质统称为润滑剂。用得最为普遍的是石油基液体润滑剂。润滑剂分为液体、半固体(润滑脂)和固体三种。润滑剂使用的目的不仅是减少摩擦、防止咬合和减少磨损,而且能降低动力消耗、提高机械效率。在实际应用中还必须按不同要求具备如下的各种特殊功能:(1)减少摩擦:(2)减少磨损;(3)散热:(4)防止腐蚀;(5)电气绝缘;(6)力的传输;(7)缓冲作用;(8)去除异物;(9)密封作用等等。一、润滑剂理化性质名词简介1.粘度。它是润滑油的最基本特性,表示液体的摩擦阻力,即油的厚薄,常用的是运动粘度单位cst(厘沲)和动力粘度单位cp(厘泊)。此外尚有雷氏、赛氏、恩氏粘度等条件粘度。
Materials that reduce the frictional properties of two solid surfaces are collectively referred to as lubricants. The most commonly used is a petroleum-based liquid lubricant. Lubricants are divided into liquid, semi-solid (grease) and solid three. The purpose of lubricants is not only to reduce friction, prevent bite and reduce wear and tear, but also reduce power consumption, improve mechanical efficiency. In practice, various special functions must be provided according to different requirements as follows: (1) Reduce friction: (2) Reduce wear and tear; (3) Heat dissipation: (4) Prevent corrosion; (5) Electrical insulation; (7) cushioning effect; (8) removal of foreign matter; (9) sealing and so on. First, the physical properties of lubricants noun Description 1. Viscosity. It is the most basic characteristics of lubricating oil, said liquid friction resistance, that is, oil thickness, commonly used kinematic viscosity units cst (cps) and dynamic viscosity units cp (centipoise). In addition there are Raytheon, Saybolt, Engler viscosity viscosity conditions.