Reasons for unstable pressure of hydraulic cutting machine

The unstable pressure of the hydulic cutting machine may be caused by various reasons such as electrical system, hydraulic system, mechanical structure, or operational use. The following is a specific analysis:

1、 Electrical system issues

Deep time system anomaly

Inaccurate timing or unstable power supply to the solenoid valve can cause fluctuations in cutting pressure.

Solution: Replace the time-based relay.

Abnormal travel switch

Poor contact of the travel switch leads to inaccurate cutting action.

Solution: Replace the travel switch.

Loose or damaged relay

Poor contact or burnout of relays can affect circuit stability.

Solution: Tighten the connecting wire end or replace the relay.

Circuit board malfunction

The circuit board is not sensitive to contact, resulting in pressure control failure.

Solution: Check the circuit board connection and replace it if necessary.

2、 Hydraulic system issues

Oil pump wear or malfunction

The wear of the oil pump leads to insufficient oil supply and unstable pressure.

Solution: Replace the oil pump.

Leakage inside the oil cylinder

The oil cylinder seal failed, resulting in pressure leakage.

Solution: Replace the oil cylinder seal or oil cylinder.

hydraulic oil contamination

The hydraulic oil is too dirty or the filter element is clogged, resulting in poor oil supply.

Solution: Clean or replace the filter element, and replace the hydraulic oil.

Electromagnetic valve malfunction

The solenoid valve core is stuck or damaged, causing abnormal oil circuit control.

Solution: Clean or replace the solenoid valve.

Insufficient hydraulic oil quantity

Low oil level causes the oil pump to suck air and pressure fluctuations.

Solution: Add hydraulic oil to the specified level.

3、 Mechanical structural issues

The knife mold line is too long

The blade line exceeds the equipment's capacity range, resulting in insufficient cutting force.

Solution: Replace the matching die line or equipment.

Mechanical wear or looseness

Mechanical components wear or become loose, leading to unstable cutting action.

Solution: Check and tighten mechanical components, and replace worn parts if necessary.

4、 Operation and usage issues

Improper operation

The operator did not operate according to the specifications, resulting in unstable pressure.

Solution: Strengthen operational training and standardize operational procedures.

Material issues

Uneven material thickness or high hardness can cause fluctuations in cutting pressure.

Solution: Select appropriate materials and adjust cutting parameters.

5、 Environmental factors

Temperature influence

Hydraulic oil temperature is too high or too low, causing viscosity changes and affecting pressure stability.

Solution: Control the hydraulic oil temperature within the specified range.

Power fluctuation

The unstable power supply voltage leads to abnormal operation of the solenoid valve and oil pump.

Solution: Use a regulated power supply to ensure stable voltage.