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在液压传动与控制系统中,液压油不仅起动力传递作用,也起润滑及冷却作用,还对机件的腐蚀和锈蚀起抑制作用。然而,几乎所有的液压系统都存在污染问题,污染的程度因系统的功能、组成及使用环境不同而异。由第一讲可知,煤矿机械液压系统油液污染的状况甚为严重,达NAS16—21级。如此严重
In the hydraulic transmission and control system, hydraulic oil not only the starting force transmission, but also play the role of lubrication and cooling, but also on the corrosion and corrosion inhibition. However, almost all hydraulic systems have pollution problems that vary depending on the system’s function, composition, and operating environment. From the first lecture we can see that the status of oil pollution in coal mining machinery hydraulic system is very serious, up to NAS16-21 level. So serious