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答:为了提高通用油压装置的可靠性和寿命,工作油的管理是头等重要的。防止油压系统混入杂质和清除过滤的污染物不用说是必需的,而定期仔细检查工作油也是十分必要的。定期检查的方法有试验室的方法和现场的方法。采用前一种方法可得到正确的判断数据,但由于需要特殊的设备和技术,故非专家不能测定;采用后一种方法精确度稍差,但由于可在现场简单地判断,故特别是在不要求精密控制的油压装置上往往采用这种方法。以下就现场检查工作油和判断其使用期限的方法简单地说明一下:
A: The management of working oil is paramount in order to increase the reliability and life of a universal hydraulic unit. Needless to say, it is necessary to prevent the hydraulic system from being contaminated with impurities and to remove filtered contaminants. It is also necessary to check the working oil regularly. Methods of regular inspection include laboratory methods and on-site methods. The former method can get the correct judgment data, but because of the special equipment and technique, it can not be measured by the non-experts. The latter method is less accurate, but because it can be easily judged in the field, This method is often used on hydraulic devices that do not require precision control. The following on the scene to check the working oil and determine the period of use of a simple way to explain: