What effect if crane hydraulic cylincer with high temperature?

The truck crane is composed of a special vehicle chassis and a jacket. The most important of the jacket is the crane. The crane can only complete the lifting operation with the assistance of the hydraulic system. So the hydraulic system is very important.

In summer, the weather is hot, and the hydraulic oil in the hydraulic system is prone to heat. This situation will affect the normal operation of the truck crane. What are the specific effects?

1. The heat of hydraulic oil will cause thermal deformation of the machine. If the valve core and the valve body of the hydraulic valve are different in material and thermal expansion coefficient, the valve body and the valve core will become stuck due to thermal expansion, which will cause malfunction and affect the hydraulic pressure. The rotation accuracy of the system leads to poor working quality of the components.
2. After the working temperature rises, the viscosity of the hydraulic oil on the crane will decrease, the volume ratio of the pump and the efficiency of the entire system will be significantly reduced, and the operation will not be flexible.
3. As the temperature rises, the viscosity of the hydraulic oil decreases, which reduces its lubricating performance. The wear of the hydraulic components is accelerated, which accelerates the wear rate of the components and shortens the service life of the components.
4. The seals of the hydraulic system and components of the truck crane are easy to deteriorate at high temperatures, the elasticity is reduced, the sealing performance is reduced or even failed, and the oil leakage is increased.
5. The temperature rise cap will also exacerbate the oxidative deterioration of the oil and precipitate asphaltic materials. These materials will block the damping holes and the gap valve port, causing the hydraulic components to fail or get stuck without action, and the metal pipes will stretch and bend. , Even rupture, etc. It is understood that when the temperature of the hydraulic oil reaches 55 degrees Celsius, the temperature of the hydraulic oil will decrease by half every 9 degrees Celsius.
6. As the temperature rises, the air separation pressure of the hydraulic oil decreases, and the dissolved air in the oil overflows, creating air pockets, which will cause the working performance of the hydraulic system of the truck crane to decrease.
From the above, it can be seen that hydraulic oil is very important for the entire truck crane. In fact, most special vehicles cannot be operated without hydraulic oil. Everyone must pay attention to check the hydraulic oil when performing maintenance on special vehicles.