Causes and Solutions for Pressurized Descent in a 1500-Ton Four-Column Hydraulic Press

Causes of Pressurized Descent in a 1500-Ton Four-Column Hydraulic Press:

1. Excessive support pressure
2. Leakage of cylinder mouth sealing ring
3. Pre-adjustment pressure of the pilot valve is too low
4. Poor sealing of the cartridge valve valve port
5. Air in the pressure gauge oil circuit
6. Mechanical vibration in the pipeline
7. Damage to the pressure gauge
8. Insufficient flow from the pressure compensation variable pump
9. Pump wear or burn
10. Internal oil leakage in the four-column hydraulic press system

Solutions for Pressurized Descent in a 1500-Ton Four-Column Hydraulic Press:

1. Adjust the pilot valve, use it with a pressure not exceeding 1 MPa
2. Check the sealing ring and replace it if damaged
3. Adjust the pressure value of the four-column hydraulic press
4. Check and re-match the valve port
5. Loosen the joint and release air when pressurizing
6. Check if the pipeline is loose; if loose, secure it firmly
7. Replace the pressure gauge of the four-column hydraulic press
8. Adjust according to the requirements of the oil pump
9. If the oil flow from the oil drain port of the pump is greater than 4 L/min, disassemble and inspect
10. Check corresponding links in various parts