The reason for the heating of the single-column hydraulic oil
1. The quantitative pump oil supply system that selects the oil pump capacity according to the fast forward speed will cause most of the excess flow to overflow from the overflow valve under high pressure and generate heat during operation.
2. The viscosity of the oil is improperly selected. If the viscosity is large, the viscous resistance will be large. If the viscosity is too small, the leakage will increase. Both conditions can cause the oil to heat up.
3. The unloading circuit in the system fails or because the unloading circuit is not set up, the oil pump cannot be unloaded when it stops working, and the flow of the pump overflows under high pressure, resulting in overflow loss and heat, resulting in oil heating.
4. The system pipeline is too thin and too long, and the bending is too much, and the local pressure loss and the pressure loss along the process are large.
5. The component accuracy is not enough and the assembly quality is poor, and the mechanical friction loss between relative motions is large.
6. The fitting clearance of the fittings is too small, or the clearance is too large after use and wear, and the internal and external leakage is large, resulting in large volume loss, such as the reduction of the volumetric efficiency of the pump and the rapid heating.
7. The volume of the oil tank is too small, the heat dissipation area is not enough, the oil cooling device is not installed, or the cooling device is installed but its capacity is too small.
8. The working pressure of the hydraulic system is adjusted higher than the actual need. Sometimes it is because the seal is too tight, or because the seal is damaged and the leakage increases, the pressure can be increased to work.
9. The temperature of the climate and operating environment is high, which causes the oil temperature to rise. WORLD Press Machine official website www.pressmachine-world.com, please indicate the source for reprinting!