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近几年来,大量引进了工程施工机械。其主要特点是除了先进的液压技术外,还采用了高粘度指数的液压油来满足设备性能的先进性,两者均占同等重要的作用,是工程机械发挥高经济效益的关键所在。但设备购进后,应怎样选用合适的液压油是目前难以解决而又往往被忽视的环节。粘度指数是指液压油的粘度随温度变化的程度同标准油粘度变化程度比较的相对值,它可用以评价液压油粘温性能的优劣。而粘温性能的优劣可用以评价液油压本身的优劣。液
In recent years, a large number of construction machinery have been introduced. Its main feature is that in addition to advanced hydraulic technology, it also uses high viscosity index hydraulic oil to meet the advanced nature of the equipment performance, both occupy the same important role, is the key to the construction machinery to play a high economic efficiency. However, after the equipment is purchased, how to select suitable hydraulic oil is a difficult and often overlooked link. Viscosity index refers to the relative value of the viscosity of the hydraulic oil as a function of temperature compared with the standard oil viscosity change. It can be used to evaluate the viscosity and temperature performance of hydraulic oil. The merits of the viscosity-temperature performance can be used to evaluate the pros and cons of the hydraulic oil itself. liquid