What are the details that need to be paid attention to during the operation of the 500-ton hydraulic press?

1. Prevent air from mixing into the system and discharge the air mixed into the system in time. Air entering the hydraulic system will cause adverse consequences such as noise and oil oxidation and deterioration. Measures must be taken to prevent air from entering the system, and the air that has entered the system must be discharged frequently.

2. Always keep the oil clean. Impurities mixed in the oil will cause the slide valve to be stuck, block the throttle hole or gap, make the hydraulic components not work normally, and aggravate the wear of the relative moving parts. In addition to installing oil filters and various devices to prevent external impurities from entering the system, the oil filters should be cleaned regularly and old oil replaced. When the hydraulic system is assembled, all hydraulic components and pipes should be cleaned. After the test run, it is best to remove all components and pipes, clean them carefully and then install them.

3. To prevent leakage. External leakage is not allowed, and internal leakage is inevitable, but the amount of leakage cannot exceed the allowable value. If there is too much leakage, the pressure will not rise, and the hydraulic motor cannot achieve the expected force (or moment). And the size of the oil leakage is related to the pressure level, which will make the movement of the working parts unstable. In addition, due to excessive leakage, the volume loss increases and the oil temperature rises. In order not to cause excessive leakage, there should be an appropriate gap between the relative moving parts and an appropriate sealing device.

4. Prevent the oil temperature from being too high. Generally, the oil temperature of the hydraulic system should be maintained at 15-50°C. Excessive oil temperature will bring a series of adverse consequences. Rising oil temperature will thin the oil, increase leakage and reduce system efficiency. The oil works at a higher temperature and is easy to deteriorate. To avoid excessive oil temperature, in addition to taking measures to avoid oil heating in the design (such as oil pump unloading and volume speed regulation for high-power systems, etc.), it is also necessary to consider whether the oil tank has sufficient heat dissipation capacity. If necessary, a cooling device can be added.

• Pre：What should be paid attention to when choosing hydraulic oil for forming hydraulic press?
• Next：Why do hot die forging hydraulic presses pay special attention to the stiffness of the fuselage?