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Why does the seal leak or not seal during use? What should we do if we encounter these pressure relief problems? Haisheng Rubber will take you to analyze it.
1. Manufacturing and assembly factors: All hydraulic components and sealing components have strict dimensional tolerances, surface treatment, surface finish, and shape and position tolerances. If the tolerance is exceeded during the manufacturing process, such as: the piston radius of the cylinder, the depth or width of the seal groove, the tolerance of the hole size of the seal ring, or out-of-roundness due to processing problems, etc., the part itself has a congenital leakage point. Leaks occur after assembly or during use.
2. Assembly factors: The hydraulic components should be prevented from being subjected to brutal operation during assembly. If excessive force is applied, the parts will be deformed, especially the cylinder body and the sealing flange are beaten with copper rods, etc. The parts should be carefully inspected before assembly. Dip the parts with a little hydraulic oil and press it in gently. When cleaning, apply diesel, especially rubber elements such as seals, dust seals, O-rings, etc. If gasoline is used, it will easily age and lose its original elasticity, thus losing the sealing function. .
3. Oil pollution and damage to excavator parts can be subdivided into gas pollution, particle pollution, water pollution and parts damage. The four reasons may also cause pressure relief.
4. Design factors: The reliability of the hydraulic system depends to a large extent on the design of the hydraulic system seal and the selection of seals. Due to the unreasonable selection of the seal structure in the design, the selection of the seals is not in accordance with the specifications, and there is no Taking into account the compatible type of hydraulic oil and sealing materials, load conditions, ultimate pressure, working speed, changes in ambient temperature, etc.
These all cause hydraulic system leakage directly or indirectly to varying degrees.
In addition, due to the inevitable dust and impurities in the working environment, a suitable dust-proof seal should be selected in the design to prevent dirt and other contaminants from entering the system to damage the seal and contaminate the oil, resulting in leakage.
If you have more questions, welcome to the Haisheng Rubber official website for consultation.
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