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How to solve the pressure failure of the four-column hydraulic press?
Add Time: 2019-12-27 14:36 Source: unknown Author: Forging Branch letter
When the pressure of the four-column hydraulic machine is normal, the safety of the operation can be ensured. If the pressure is abnormal or the required pressure is not reached, the hydraulic system cannot work normally. ? How to solve such a pressure failure?

The abnormal pressure of the hydraulic press is a common pressure failure. Generally, there are three main points. There is no pressure in the hydraulic system, the pressure cannot be adjusted, the pressure fluctuates, or is unstable. The main reasons for the lack of pressure in the hydraulic press and the corresponding solutions are described below.

During the operation of the hydraulic press, the pressure of the hydraulic system suddenly drops to zero, and there is no way to adjust it, usually in most cases it is a problem with the pressure regulating system itself. The reasons for this type of failure are: foreign matter on the sealed end of the relief valve, the damping hole of the relief valve may be blocked, the main valve of the relief valve is stuck in the open position, and the solenoid of the unloading reversing valve It is burnt out, the electric wire is cut off or the electric signal is not issued. For the proportional relief valve, the electric control signal may be interrupted.

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When the hydraulic equipment stops operating for a period of time, when it is restarted again, the pressure is zero. There may be reasons for the overflow valve to rust in the open position, the oil pump motor to reverse, the oil pump due to the filter blocking or the suction pipe leaking. Can suck up oil.

After the four-column hydraulic press equipment is replaced by the maintenance component, the pressure may be zero. The possible reasons are as follows: The oil pump is not installed tightly and cannot form a working volume. The oil pump is not filled with oil and cannot form a sealed oil wax. The reversing valve core is reversely installed. The reversing valve is reversed. If there is a U-shaped reversing valve in the hydraulic system, once the reverse direction is installed, the hydraulic system will be relieved .