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Common problems with high-pressure hoses
Common problems and analysis of high-pressure hoses during use are as follows:
1. Outer rubber layer failure
Outer surface cracks
Mainly caused by excessive bending in cold environments, low temperatures make rubber brittle and prone to cracks.
Preventive measures: Avoid bending or moving the hose at will in low temperature environments, and replace cold-resistant hoses when necessary.
Outer surface bubbling
Unqualified production quality or improper use (such as high-pressure impact) causes the outer rubber layer to peel off from the reinforcement layer.
Preventive measures: Select qualified products to avoid frequent pressure fluctuations.
Not broken but a large amount of oil seepage
High-pressure liquid flow erodes the inner rubber layer, causing the steel wire layer to be exposed and oil seepage.
Preventive measures: Ensure that the bending radius meets the requirements and avoid excessive impact of high-pressure liquid flow on local areas.
Severe deterioration and micro-cracks of the outer rubber layer
Long-term oxidation causes the outer layer to become brittle, and cracks will occur with slight bending.
Preventive measures: Replace aging hoses regularly to avoid overuse.
2. Inner rubber layer failure
The inner rubber layer is hard and cracked
Overheating causes plasticizer overflow, causing the inner rubber layer to harden and crack.
Preventive measures: Control the working temperature of the hydraulic system to avoid excessive oil temperature.
The inner rubber layer is seriously deteriorated and expanded
The rubber material is incompatible with the hydraulic oil, resulting in chemical deterioration.
Preventive measures: Select rubber materials that are compatible with the hydraulic oil and regularly check the physical and chemical indicators of the oil.
3. Failure of the reinforcement layer
Rupture and rust of the braided steel wire near the rupture
Moisture or corrosive substances erode the reinforcement layer and weaken the strength of the hose.
Preventive measures: Avoid contact between the hose and corrosive media and regularly check the sealing of the joints.
The reinforcement layer is not rusted but irregular broken wires appear
High-frequency impact causes frequent friction and breakage of the steel wire.
Preventive measures: Use a steel wire wrapped skeleton as the reinforcement layer to reduce high-frequency impact.
4. Failure of the rupture
One or more neat ruptures
The system pressure exceeds the pressure resistance of the hose, resulting in rupture.
Preventive measures: Ensure that the system pressure is within the pressure resistance range of the hose and calibrate the pressure gauge regularly.
Twisting occurs at the rupture
Excessive twisting during installation or use leads to structural changes.
Preventive measures: Avoid twisting during installation and ensure that the hose stretches naturally.
5. Other common problems
Loose or broken joints
Improper installation or vibration may cause loose joints and leaks.
Preventive measures: Use matching regular joints and check the tightness of joints regularly.
Pipeline expansion or deformation
High temperature and high pressure may cause the hose to expand and deform, reducing performance.
Preventive measures: Reduce working pressure and temperature, or replace high temperature and high pressure hoses.
Pipeline blockage
Impurities or sediments may cause blockage, affecting the delivery efficiency.
Preventive measures: Clean the hose regularly to ensure that it is unobstructed.
2025-04-23 15:08:33