The speed of the cutting machine is slowed down, and the reason for the pressure drop is analyzed:
1. Single-head solenoid valve head fails;
2. Control the single-head valve J2 relay to burn;
3. The cylinder seal ring is aging;
4. The solenoid valve spool is seriously worn;
5. The viscosity of the pressure oil is reduced;
6. The main relay is in poor contact and the main oil circuit cannot be switched.
