First of all, the hydraulic oil pump lacks remaining oil and liquid leaks, resulting in common failures in the oil passage. Deal with the leaking pipeline in a timely manner and pay attention to the sealing of the speed control valve, poppet valve, and valve block. Poor sealing can also cause leakage, and sealing work must be done well.
Secondly, leakage in the internal structure of the hydraulic cylinder leads to common failures in the oil passage, mainly internal leakage. Due to the expansion of the friction resistance of the cylinder block movement, when the relative speed decreases significantly with the change of the stroke direction, the leakage part of the four-column hydraulic press should be searched and dealt with to improve the dimensional accuracy and installation quality of the four-column hydraulic press components; then, in On the hydraulic circuit, the pipeline friction resistance, gas pressure and back pressure friction resistance are all very large. Gear oil comes home from the speed regulating valve. The speed control valve of the fuel tank is increased, making it impossible for customers to achieve the required speed, resulting in common failures in the oil passage. It is recommended that the oil inlet pipe should not be too thin. The velocity of the pipe should be specified based on the size of the pipe
After that, the internal oil pressure of the hydraulic cylinder is too low, and the vibration damping will cause failure of the oil passage. The hydraulic cylinder must be cleaned in time.
The oil passage of the four-column hydraulic machine should have the fluidity of hydraulic oil. Cleaning the hydraulic oil can ensure the stability of the equipment. Water viscosity is two key indicators of gear oil. If the gear oil is milky white and turbid, it means it contains more water, or you can use clean and dry cotton yarn dipped in a little hydraulic oil to test it, and then ignite it with fire. Crackling or showing light also indicates more moisture; hydraulic oil viscosity testing requires auxiliary tools. Put the hydraulic oil and ordinary hydraulic oil into the same test tube brush respectively, seal the test tube baby mouth with a bottle stopper, place it upside down, and detect that the bubbles in the test tube baby are higher than normal.
