One of the hydraulic systems you may encounter is a hydraulic press machine. It is a basic machine that compresses a variety of materials, including metal, plastic, concrete, and chemicals. The machine generates compressive force through a hydraulic cylinder, and it employs a hydraulic lever in place of a mechanical lever.
The Basic Working Process of a Hydraulic Press Machine!
A hydraulic press works by creating a pressure difference between two pistons, resulting in a compressive force that is several orders of magnitude larger than that delivered mechanically.
During this operation, the piston rod, pushrod, and block replace the jackscrews, crank, and eccentric. Hydraulic press machines employ a hydraulic cylinder carrying a liquid, such as oil. These presses help apply force using a hydraulic cylinder's mechanical advantage.
The machine can be single-acting or double-acting, depending on the direction of pressure application. Hydraulic presses are widely used in industry, particularly for shaping metal and plastic parts, but they may also compress materials such as dirt or stone.
Why is the hydraulic press machine's oil supply pressure so low?
When the engine throttle is fully open, the inlet oil pressure of the torque converter is lower than normal, which is caused by the following.
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Low oil supply
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Oil is bubbling
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Oil intake or filter block
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Hydraulic pump damage
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Incorrectly installed oil suction network
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Excess oil flows into the transmission.
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Oil pipe leak or blockage
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Oil-in and oil-out valves cannot be closed, and spring rigidity is diminished.
How to Fix Hydraulic Press Low-Pressure Issue?
A low-pressure issue is a common problem with a press machine, and it can affect the machine’s performance. You should understand the causes of low pressure for successful troubleshooting. Over time, we have discovered that typical causes of this problem include low hydraulic fluid levels, leaks, and worn-out components. Read below to learn the causes of low pressure in hydraulic press machines and get solutions to resolve these problems.
If no other external factors are present, the machine has probably leaked:
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The pump is severely worn, with significant internal leaking.
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The overflow valve is in the regular open position owing to a failure.
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The internal leakage of the directional valve is significant.
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The considerable leakage in the actuator indicates that the pump pressure is low.
The solution for the pressure rise of the hydraulic press machine:
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Measures will be taken for the hydraulic press to lower the system temperature.
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Replace or repair the utilized hydraulic pump.
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3. Disassembling and cleaning the overflow valve of the hydraulic press machine
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Fix and replace the overflow main valve core and body.
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Disassemble and clean the overflow valve, then replace or repair the pilot needle valve and valve seat.
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Dismantle or replace the leaking poppet valve if it is not properly seated in the valve seat. You can examine the assembly or tightness of the poppet valve.
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Replace or repair the pressure controlling hand wheel of the hydraulic press machine.
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Change or replace the pressure-regulating spring.
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Replace or replace the valve seat and pilot needle valve.
Solutions to typical pressure breakdowns in hydraulic press machines:
The hydraulic machine's power source contains too many impurities, particularly pollutants that are easily entangled; the hydraulic motor blades are easily entangled; and the hydraulic motor speed is uneven, causing the hydraulic oil flow to be blocked and resulting in uneven pressure. For such failures, replace the hydraulic oil filter device first, followed by the hydraulic oil.
The hydraulic pump is malfunctioning, and it is also the component where the hydraulic machine is most likely to fail. There are probably three reasons.
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A damaged sealing ring allows air to leak in, generating uneven pressure.
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There are no paper pads on both sides of the pump body and the pump cover. The pump body and pump cover are not vertically sealed, allowing air to be sucked in during rotation. A paper pad is added between the pump body and the pump cover. Tighten the connection between the pump body and pump cover to ensure no leakage.
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Damage to the hydraulic pump itself and inadequate gear engagement result in insufficient oil supply and unequal pressure.
The failure of the oil suction pump, which is also caused by inadequate oil absorption.
Safety Tips For Your Hydraulic Press Machine
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Preventive maintenance is one of the most effective strategies to avert probable failure and damage. Hydraulic presses are constantly subjected to extreme pressure, heat, and wear. Parts and fluids need to be cleaned and replaced on a regular basis since they wear out and are used heavily.
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Inspection: Inspect your machines thoroughly regularly. Check any hoses and seals for damage, fittings for cracks and a tight fit, fluids for filth or deterioration, and the machine's overall condition for cracks. Pay special attention to any extreme vibrations or weird noises while the equipment is working, since they may signal a need for immediate repair.
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Cleanliness: Keeping your hydraulics well-lubricated and the surrounding area clean is critical not just for the machine's proper operation but also for the safety of people who use it. Lubrication provides a smooth user experience by minimizing friction and allowing for a clean stroke. Alternatively, slick oil, litter, and grime can produce hazardous conditions
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Training: Any person who operates a hydraulic press machine should be informed in all aspects of operation in order to take adequate safety precautions, such as identifying faults and maintaining overall safety. Using a press is a specialized job, and knowing how to operate a hydraulic press safely requires practice and skill. Undertrained users are far more likely to be injured than those who have received proper training.
Key Takeaways
Hydraulic press machines can face common issues like low pressure and leakage. Follow the above tips and tricks to troubleshoot these problems. Detect the issue, acquire information, and test and fix components as needed. Also, implement safety considerations throughout the troubleshooting process.
