Periodic inspection of composite hoses
There are many factors that affect the use of the hydraulic hose assembly. The reliability and economy of the hose can only be guaranteed if the hose and fitting are correctly selected according to the working conditions.
1 hose inner diameter
If the pipe diameter is too small, the flow rate of the medium in the pipeline will be increased, the system will be heated, the efficiency will be reduced, and an excessive pressure drop will be generated, which will affect the performance of the entire system.
2 working pressure
The highest pressure allowed by the hose during continuous operation.
The recommended working pressure is typically one quarter of the minimum burst pressure of the hose.
Different configurations of hoses have different working pressures.
3 Impact pressure and fatigue life
Determined based on the highest pressure value of the hydraulic system design.
The peak value of the impact pressure will be much higher than the highest pressure value of the system. but
There are generally overflow valves on the system, so the impact pressure will not seriously affect the hose.
Fatigue life.
For hydraulic systems with particularly high impact pressure, it is recommended to use a special pulsation-resistant shock.
Hose products.
4 temperature range
The user should use the hose within the temperature range allowed by the hose quality specification. If the working environment temperature exceeds this range, it will affect the life of the hose, and its pressure bearing capacity will be greatly reduced. A hose jacket is recommended for systems where the operating ambient temperature is too high or too low.
5 Chemical compatibility
If special hydraulic media is used, the user should ensure that the hose assembly selected and its hose inner, outer, joint and O-ring are compatible with the media.
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