What to do if the pressure of the hydraulic press is low

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If you can rule out other external causes, it is likely to leak internally.

1. The pump is severely worn and has large internal leakage.

2. The overflow valve has malfunctioned and is in a normally open state.

3. The internal leakage of the directional valve is large.

4. There is a large leakage in the execution original, which indicates that the pump pressure is small.

The pressure of the hydraulic press can not rise up the solution

1. The hydraulic press takes measures to reduce the cooling of the system

2. Replace or repair the used hydraulic pump

3. Disassemble and clean the overflow valve of the second-hand hydraulic press

4. Repair and replace the main overflow valve core and valve body

5. Disassemble and clean the overflow valve, replace or repair the pilot needle valve and valve seat

6. Disassembly and repair of the missing poppet valve or the poppet valve is not installed in the valve seat hole. For this, the assembly or tightness of the poppet valve can be checked.

7. Replacing or repairing the pressure regulating hand wheel of the second-hand hydraulic press

8. Replace or reinstall the pressure regulating spring

9. Replace or repair the valve seat and the pilot needle valve. This article is reproduced from the laser cutting machine

Solving common pressure failure methods of hydraulic press

1. There are too many impurities in the power source of the hydraulic machine, especially some contaminants that are easy to be entangled. It is easy to entangle the blades of the hydraulic motor, and the speed of the hydraulic motor is uneven, causing the hydraulic oil flow to be blocked and causing uneven pressure. For such failures, it is recommended to replace the hydraulic oil filter device, and then replace the hydraulic oil.

2. The hydraulic pump is faulty, which is also the part where the hydraulic press is more prone to failure. There are probably three reasons:

1) The sealing ring is damaged and air flows in, causing uneven pressure;

2) There are no paper pads on both sides of the pump body and the pump cover; the pump body and the pump cover are not sealed vertically: this requires air intake during rotation: paper pads are added between the pump body and the pump cover; the pump body is ground on a flat plate with emery , So that the vertical error of the pump body and the pump cover does not exceed 0.005mm, tighten the connection of the pump body and the pump cover, and there should be no leakage.

3) The hydraulic pump itself is damaged and the gears are insufficiently engaged, resulting in insufficient oil supply and uneven pressure. 3. The failure of the oil suction pump is also due to insufficient oil suction, resulting in uneven pressure.

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