Hydraulic pipe bursts are a common concern for operators of second-hand slag-stripping machines. When hydraulic pipes burst, it leads to oil leaks, making maintenance a time-consuming and labor-intensive task. What are the common causes of hydraulic pipe bursts, and how can we minimize losses after an incident?
One major reason for hydraulic pipe bursts is the use of substandard hydraulic pipes. When the original hydraulic pipe is damaged, many opt for cheaper alternatives that don’t meet industry standards. These inferior pipes often lack the necessary performance and reliability compared to their original counterparts. Additionally, the metal joints at both ends may have poor crimping processes, leading to sealing issues and potential leaks over time. To avoid this, always choose reputable brands and original products when replacing hydraulic pipes. Professional distributors offering original factory-quality parts at a fraction of the cost can be invaluable resources.
Another issue arises when the hydraulic system's preset pressure is too high. Testing the pressure generated by the main pump during various operations can help identify if adjustments are needed. If the pressure exceeds recommended levels, consider reducing the pressure settings on the multi-valve.
High hydraulic oil temperatures can also lead to pipe bursts. Excessive heat affects the seals of hydraulic components and can cause expansion, leading to jams in valve cores and bodies. This localized high temperature accelerates wear and tear on the pipes.
Mixing different types of hydraulic oil during repairs can create instability in the system. For instance, using 46# wear-resistant hydraulic oil is standard, but adding common hydraulic oil from accessory stores can disrupt the system’s balance, increasing pressure and risking leaks.
Poor operational practices, like rough handling, can generate sudden impact pressures that damage high-pressure oil lines. This rough operation not only compromises the hydraulic pipes but also affects the longevity of other components, leading to frequent breakdowns. Operators should handle the machine gently to prevent unnecessary stress on the system.
Corrosion is another factor. Even though modern hydraulic pipes are designed to resist corrosion, prolonged exposure to high pressure and flow can degrade rubber hoses. Avoid letting hoses come into contact with gasoline or diesel, as these fluids can cause swelling and deterioration. Regular cleaning of the external surfaces is essential to prevent corrosion.
Abnormal vibrations caused by pumps working under pressure can also damage hydraulic pipes over time. Ensuring that pipe clamps and protective sleeves are secure can mitigate these issues.
In the event of a burst pipe, immediate action is critical. Lower the bucket to the ground, shut off the engine, and reduce system pressure to minimize oil loss. In some cases, swapping hoses between the large and small cavities of the boom cylinder can serve as a temporary fix, but this should only be done until a replacement can be installed.
While these steps offer short-term solutions, it’s essential to replace the damaged hydraulic pipe promptly with a new one and replenish the hydraulic oil. This approach ensures optimal performance and safety, preventing further complications in the future.
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