Hydraulic pipe burst is a common failure in excavator operations, not only leading to hydraulic oil leakage, high maintenance costs, but also may cause delays in the project. Industry experts pointed out that the burst pipe is mostly triggered by the following reasons:

1.Poor quality fittings and process defects

The use of low-quality hydraulic pipe or buckling process poor fittings, sealing and reliability is not enough, easy to leak oil or even burst pipe. It is recommended that the replacement of regular brands of hydraulic pipes and fittings.

2.System pressure and temperature abnormality

Hydraulic system preset pressure is too high or the hydraulic oil temperature is too high, will accelerate the aging of seals, and even lead to pipeline expansion rupture. Regular monitoring of the pressure value is required to avoid high temperature operation.

3.Mixing and improper operation of hydraulic oil

Mixed use of different grades of hydraulic oil (such as 46 # and 68 # mixed) will destroy the stability of the fluid, increasing the pressure of the pipeline; rough operation of the transient impact pressure will also accelerate the failure of the pipeline.

4.Corrosion and vibration fatigue

Hydraulic pipe long-term contact with diesel and other corrosive liquids, or due to abnormal vibration lead to loose pipe clamps, wear and tear, and ultimately lead to pipe burst. Daily need to clean the pipeline and check the fixtures.

Emergency three-step method

If the sudden burst pipe, should be immediately:

1.Stop the machine to reduce pressure: turn off the engine after the bucket falls to the ground to reduce the loss of hydraulic oil;

2.Temporary repair: clean the rupture of the low-pressure pipeline, use anaerobic adhesive or cloth wrapped seal;

3.Adjustment of oil circuit: swap oil pipes of the same specification (unbroken pipes bear high pressure), and maintain the operation.

Expert reminder: temporary measures are only for emergency purposes, you need to replace the new pipe and replenish the hydraulic oil as soon as possible to avoid secondary failure.

Prevention is better than remedy

Regular replacement of standard hydraulic fluid, standardised operating procedures and enhanced equipment inspection can significantly reduce the risk of pipe burst. Practitioners need to remember: short-term cost savings can be more costly.