To ensure the long-term reliable operation of hydraulic […]
To ensure the long-term reliable operation of hydraulic system of hydraulic press in operation, the following problems must be paid attention to in the design or use process:
(1) prevent air from mixing into the system and discharge the air from the system in time. Air entering hydraulic system of hydraulic press will cause noise and oil oxidation deterioration and other adverse consequences. Measures must be taken to prevent air mixing, and the air mixed into the system should be constantly discharged.
(2) always keep the oil clean. Impurities in the oil can cause the slide valve to become stuck, plug the throttling orifices or gaps and make the hydraulic components unable to work properly and make the relative moving parts more worn. In addition to the installation of filters and various devices to prevent foreign impurities from mixing into the system, regular cleaning of filters and replacement of old oil. The hydraulic system of hydraulic press should clean all hydraulic components and pipelines when assembling. After the test run, it is best to remove the components and pipelines, after careful cleaning and then installed.
(3) prevent leakage. External leakage is not allowed, and internal leakage is inevitable, but its leakage quantity cannot exceed the allowable value. If the leakage is too large, the pressure will not rise, and the hydraulic motive cannot achieve the expected force (or torque). Moreover, the oil leakage rate is related to the pressure level, which will make the working parts unstable. In addition, due to excessive leakage, volume loss increases and oil temperature rises. In order to avoid excessive leakage, proper clearance and proper sealing device should be installed between relative moving parts.
(4) keep the oil temperature too high. General hydraulic press hydraulic system oil temperature to keep 15 50 ℃ ￣ as appropriate. Too high oil temperature will bring a series of bad consequences.
The increase of oil temperature will dilute the oil, increase leakage and decrease the system efficiency. Oil works at higher temperatures and is prone to deterioration. To avoid excessive oil temperature, in addition to taking measures to avoid oil heating in the design (such as the unloading of oil pump and the adoption of volume-regulating method for high-power system), it is also necessary to consider whether the fuel tank has sufficient heat dissipation capacity. If necessary, additional cooling units can be added.
Believe to remember the above points, your hydraulic press hydraulic system will be able to work for a long time and reliable!