What are the reasons for the slow pressure of the 800 ton hydraulic press?

1. Reason: There is air in the hydraulic cylinder.
Solution: Exhaust through the exhaust device, and check whether there is air inhalation at the sealing ring of the reciprocating part of the piston rod. If there is, it may be a failure of the sealing ring, and the sealing ring should be replaced.
2. Reason: the operation of the hydraulic pump is irregular, and the rotation of the pump is blocked or slightly killed.
Solution: repair or replace the hydraulic pump.
3 Reasons:800 ton hydraulic pressWhen the buffer device is activated, the piston is temporarily stopped or reversed.
Solution: This is because the orifice of the one-way valve is too small, so that the amount of oil entering the buffer chamber is too small, and even a vacuum occurs. This failure should increase the orifice of the one-way valve.

4. Reason: When the piston movement speed is high, the steel ball of the one-way valve follows the flow, which blocks the valve hole and causes the hydraulic cylinder to act irregularly.
Solution: replace the steel ball with a pilot valve poppet valve spool.
5, hydraulic press hydraulic cylinder action is not flexible. The inner layer of the rubber hose is peeled off, so that the oil circuit is broken on and off, resulting in irregular action of the hydraulic cylinder.
Solution: replace the rubber hose.
6. The hydraulic cylinder bears a certain lateral load, which also leads800 tonsOne reason for the slow movement of hydraulic presses.
Solution: The same exclusion method as the hydraulic cylinder cannot act.
7. Poor liquid filling.
Solution: check its sealing performance.
8. Pump wear or burn
Solution: If the leakage of the oil return port of the pump is greater than 4 liters/hour, it should be removed for inspection.
9. The leakage in the system is serious.
Solution: Check whether the sealing ring of each part is damaged, and replace the sealing ring of the same specification if it is damaged.