What causes the hydraulic press pressure system to be too low

When the hydraulic press is running, the operator should check the oil supply of the hydraulic system in advance, the oil pressure should be stable within a certain range, if the oil supply pressure is too high, the oil pump will wear, the oil distributor will wear, the oil pressure is not normal, the task can not be completed normally, and the equipment damage may occur.

In the process of inspection, when the throttle of the hydraulic press is fully opened, the inlet pressure of the hydraulic torque converter is still lower than the standard value, the main reasons are as follows:

1, the oil amount is small, the oil level is lower than the oil suction port plane

2. Pipeline leakage or blockage

3, into the oil pipe or oil filter

4. Improper installation of oil absorption net, oil bubble

5, the import and export pressure valve can not be closed or the spring stiffness decreases

6. Excessive transmission oil flow

7, hydraulic pump wear or damage

When the oil pressure is found to be too low, check the oil level, if the oil level is lower than the minimum standard, it is necessary to refuel, if the oil level is normal, check the inlet and outlet for leakage. Remove oil if necessary. The outlet and inlet are well sealed, to check the inlet and outlet pressure valve working conditions are good, if the inlet pressure valve and outlet pressure valve can not be closed properly, to put it as follows, and check the upper part. Regardless of whether there are cracks or scars, whether the oil hole and the oil hole are open, and whether the spring stiffness is small, the problem should be solved in time to avoid affecting the work efficiency. If the pressure valve is normal, the hydraulic press should remove the pipe or filter for inspection. If a blockage occurs, the sediment should be cleaned and removed. Open the pipeline, check the hydraulic pump, and replace the pump if necessary. If hydraulic oil bubbles, check pipe installation. If the oil level of the return line is lower than the oil level of the tank, install the return line.