Ash Truck Stretchforming hydraulic pressHow to solve the leakage outside the cylinder?
1. Check whether the hydraulic cylinder seal of the hydraulic press is damaged due to poor assembly.
A, hydraulic press hydraulic cylinder seal assembly, often through the thread, spline, keyway and sharp edge and other positions, a little careless easy to cause the phenomenon of sealing lip.
B. When the hydraulic cylinder of the hydraulic press is assembled, the end cover is biased, and the piston rod is not concentric with the cylinder barrel, which makes it difficult for the piston rod to extend and accelerates the wear of the seal. It can be disassembled for inspection and reassembled.
C, hydraulic press hydraulic cylinder seal installation error: such as seals installed wrong or missing. The sealing gland is not installed properly and cannot be pressed tightly: for example, there is deviation in the installation of the gland, the force of the fastening screw is uneven, and the fastening screw is too long. The screws shall be tightened in diagonal order. When tightening the screws, the force shall be uniform. The screw length shall be reasonably selected according to the depth of the screw hole.
2. Check whether there is any problem with the quality of the hydraulic cylinder seal of the hydraulic press: This may be the case when the oil leakage problem cannot be solved by repeatedly replacing the new sealing ring. At this time, it should be confirmed whether the sealing ring is purchased from the products of informal manufacturers, and whether there is any problem with the size of the sealing material.
3. Check whether the processing quality of the sealing part of the hydraulic cylinder of the hydraulic press meets the requirements: if the groove size and precision do not meet the requirements, the sealing surface is rough, not chamfered, etc., the groove size should be designed and processed according to the relevant standards, and the required size should be corrected to the required size, corrected and deburred.
4. Check the use conditions of hydraulic cylinder seals of hydraulic press: if the oil is not clean, the viscosity is too low, the oil temperature is too high, and the ambient temperature is too high, replace the appropriate clean oil, find out the reason for the temperature rise, and take measures such as heat insulation and oil cooling device.