Every hydraulic professional knows how important hydraulic seals are in hydraulic systems. Hydraulic seals play an important role in eliminating hydraulic leaks and thus protecting the system from contamination. When contaminants enter the system, they can cause hydraulic system failure, which can negatively affect the system. This articleZhongyou Heavy IndustryBring common hydraulic seal fault types and problems caused.
A hydraulic seal failure means that the seal is damaged or defective. This may be due to long system operation time, assembly errors, improper selection of seals, chemical breakdown, pollution, hot corrosion, etc. There are different types of seals on the market that can be used for special applications. In case if the choice is wrong, the entire hydraulic system will need to face the consequences. The system will leak and cause hazards to workers and work areas. In order to eliminate this hydraulic system problem, the technician needs to immediately discover the hydraulic seal failure and wish to replace it with a suitable seal.
What are the problems caused by the failure of 1. hydraulic seals?
When a hydraulic seal fails in any application, it can cause many problems, some of which are listed below.
1) Dirt will enter the system and contaminate the liquid.
2) Reduced pressure flexibility. This means that it will in turn affect the low and high pressure operation of the working system.
3) Cause the hydraulic system to leak, which will discharge fluid during operation. Eventually the system is damaged.
4) Cause the fluid to burst, and this uncontrolled release of pressure hydraulic oil will cause danger.
5) The worn sealing material will flow with the fluid and block the channel. In addition, system components can be damaged.
2. common hydraulic seal failure:
1) Seal wear: Due to certain mechanical effects, such as friction, scratches and corrosion, hydraulic seals begin to wear. This is called hydraulic seal wear. Causes of seal wear include rough surface finish, damaged or porous surfaces, inadequate lubrication, and contamination.
2) Seal extrusion: The gap between the sliding surface and the housing will cause the hydraulic seal to fail. Under high pressure, excessive gaps will deform the shape of the hydraulic seal and cause the sealing material to creep or break. High system pressures, large extrusion gaps, improper sealing materials, and cylinder expansion are common causes of extrusion failure.
3) Diesel damage: Air bubbles present in the flowing pressurized fluid cause diesel damage to the seal. Under high pressure, the smoke inside the bubble will burn and damage the sealing surface through combustion. Oil contamination and sudden pressure increases are the main causes of diesel damage.
4) Hydrolysis: Damage related to hydrolysis can cause the seal to rupture. This damage occurs due to exposure to water and water-based fluids at higher temperatures.
5) Expansion: Hydraulic oil that is not compatible with the seal will be absorbed into the sealing material and cause expansion. Shape deformation caused by seal discoloration and seal loosening are visible defects. The increase in temperature and the improper selection of the seal are the factors that cause the expansion.
6) Side load: Extreme side loads that exceed the guiding capacity can damage the seal. High temperature and inefficient bushing placement are the causes of side load damage. Lateral loads create contact between the metals and cause the system to collapse.
7) Air running: Most hydraulic seals are made of soft and soft materials. These sealing materials require proper lubrication for smooth operation. Lack of lubrication or dry working conditions will accelerate wear.
Zhongyou Heavy Hydraulic Technology Advantage]
Zhongyou Heavy Industry in strict accordance with the ISO international standard quality management system and 5S management standards for quality control and internal management. The "Henan Province Fluid Pressure Forming Intelligent Equipment Engineering Technology Research Center" has been established. The core team is composed of dozens of doctors, masters and metal forming experts and professors from various colleges and universities, focusing on the research and development of hydraulic forming core technology and product process.
Zhongyou Heavy Industry has carried out long-term production, learning, and research cooperation with the Institute of Metals of the Chinese Academy of Sciences, Nanjing University of Aeronautics and Astronautics, and jointly established a "Hydroforming Technology Industrialization Demonstration Base" to track domestic and foreign technologies and continuously improve "Zhongyou Heavy Industry" hydraulic equipment brand value.