We all know that the hydraulic power unit is equivalent to the human body, and the special hydraulic oil for the hydraulic power unit hydraulic system is equivalent to human blood. If there is a problem with the blood, it will bring about many conditions. Today Huai'an Power Unit will tell you what happens if the hydraulic oil of the hydraulic power unit is not selected properly?
Just like human blood, if the blood has a problem, then the human body will malfunction, and the hydraulic power unit hydraulic oil will cause various failures in the hydraulic control system of the hydraulic power unit product. Let's take a look at the following cases first!
The viscosity of the hydraulic oil of the hydraulic power unit is not within the proper range. For example, a hydraulic system is required to be used under the condition of 20-70 degrees Celsius. However, if VG46 hydraulic oil with a viscosity index of 100 is selected at this time, the oil is in The kinematic viscosity at 20 degrees Celsius is 1 34.6 cST.
If the hydraulic system of the hydraulic power unit uses a gas-liquid direct contact accumulator, water and glycol cannot be used.
Compared with mineral oil, synthetic refractory oil has a higher density. Water-containing refractory oil not only has a higher density but also has a higher vapor, which will produce greater resistance to the flow of oil, so in order to avoid the pump causing cavitation and vibration , You should avoid the use of such oils.
For small hydraulic equipment used under conditions of large temperature changes, if the viscosity change range is 3 times, the leakage will also change 3 times, which will have a greater impact on the small flow hydraulic system.
Therefore, the power unit manufacturer reminds everyone that when selecting hydraulic oil-be careful to select according to your actual working conditions to prevent all kinds of damage to the hydraulic system.
Post time: Nov-17-2020