Generally speaking, hydraulic oil should meet the following requirements: it should not contain steam, air and other impurities that are easy to vaporize and produce vaporization; it has good lubricating performance and a high liquid film Strength; high chemical stability; suitable viscosity and good viscosity-temperature performance.
Hazards and preventive measures of oil pollution in hydraulic system The pollution of hydraulic system is one of the main reasons for hydraulic failure. Contaminants mixed into the system will accelerate the wear, abrasion, burn and even damage of hydraulic parts, or cause valve failure or noise. Causes movement disorders or even failures, misoperations and accidents and so on. Therefore, it is necessary to strengthen management to prevent oil contamination and ensure that the hydraulic system can operate reliably.
Hazards and preventive measures of air entering the hydraulic system The oil used in the hydraulic system has little compressibility, but the compressibility of low-pressure air is very large, about 10,000 times that of the oil, even if the system contains a small amount of air, It is also very influential and can cause the system to malfunction.
Maintenance from the appearance, such as whether the joints are loose, whether there is oil leakage, whether there are cracks in the pipeline, etc., check before the pump is started, such as whether the oil is refueled according to the regulations, whether the oil temperature is normal, and if it is lower than 10 ℃, it should be Run under load for more than 20 minutes (especially the winter festival); the pump is started and checked after starting. When the pump is started, the method of on-off and off-stop should be used to start the pump to raise the oil temperature, so that the running device can operate flexibly and then enter normal use. After the pump is started, it should also be checked for cavitation,Overheating, bubbles and other undesirable phenomena occur.Click the picture to know more details of ZGYX-452 Integrated DTH Surface Drill Rig