Why does the seal of the four-column hydraulic press leak

Four-column hydraulic press for hydraulic components and seals accuracy requirements are very high, because the main role of the seal is to prevent the leakage of the hydraulic system, the seal can not be used normally for the hydraulic press is very important, then why the seal will leak, tell you about the main reasons:

The selection of hydraulic seals does not match, due to the high pressure, the hardness of the seals is too small, the metal groove is extruded, the hardness of the seals is too high and the metal groove can not be completely filled, or the size of the seals and the metal groove of the hydraulic press does not meet will cause leakage, then the sealing material and the medium dissolve, The seals are softened or dissolved, the operating temperature of the hydraulic press is too high, the seals are carbonized, and the temperature is too low, which will lead to the hardening and contraction of the sealing materials and cause leakage; Poor lubrication or high linear speed of the four-column hydraulic press will increase the heat, wear or dry wear of the seals to form leakage; Vibration of the cavity or the use of aged seals can also cause leakage.

Second, the assembly and design of the reasons for the improper selection of four-column hydraulic press chamber support material, wear chamber and piston rod, friction pair size is not appropriate to cause wear caused by leakage; Improper screw chamfer of cylinder and piston end of hydraulic press, or improper installation chamfer of seal will wear seal, and if the surface of cavity or piston rod is rough, it will wear seal and cause leakage.

Then finally, the improper installation of the four-column hydraulic press leads to the leakage of the seals, one is the installation direction, the other is wear, the installation direction of the seals is wrong, then the foreign matter or dust during installation will be mixed into the sealing chamber of the hydraulic press and cause leakage, and the surface of the seals is scratched or the assembly is not suitable for causing leakage.