Friction characteristicsFriction characteristics of a hydraulic problem O-ring and the basic requirements

 

Domestic and foreign scholars on the stress distribution of hydraulic installation and use of O-rings in contact failure form had extensive theoretical research, and carried out experimental analysis of hydraulic O-ring friction mechanism under water lubrication conditions and seal pressure, compression experimental study of the amount of friction and slip velocity on the law.

 

The results showed that when a certain low compression ratio of nitrile rubber O-ring hydraulic produce significant force - displacement lag. However, the characteristics of such viscous friction caused by the viscoelastic material, particularly in the variation of friction under dry conditions is unclear. When the low pressure seal, the seal opening force is small, the impact of viscous friction characteristics of hydraulic O-ring seals to dry gas is more prominent.

 

The basic requirements for hydraulic O-ring

 

1. Hydraulic O-ring has a certain mechanical properties such as tensile strength, elongation.

 

2. appropriate elasticity and hardness, compression and deformation rate is small.

 

3. Hydraulic O-rings have high temperature and low temperature, high temperature does not decompose, softening, hardening at low temperatures.

4. Adaptability and working media, no swelling, decomposition, small hardening and other adverse reactions.

 

5. The oxygen-resistant performance is better and also better anti-aging properties, the best durability and long life.

 

6. Hydraulic O-ring wear, Oh, have no metal abrasion.

 

7. easy molding or secondary processing, and must be cost-effective products.

 

 of a hydraulic problem O-ring and the basic requirements

 

Domestic and foreign scholars on the stress distribution of hydraulic installation and use of O-rings in contact failure form had extensive theoretical research, and carried out experimental analysis of hydraulic O-ring friction mechanism under water lubrication conditions and seal pressure, compression experimental study of the amount of friction and slip velocity on the law.

 

The results showed that when a certain low compression ratio of nitrile rubber O-ring hydraulic produce significant force - displacement lag. However, the characteristics of such viscous friction caused by the viscoelastic material, particularly in the variation of friction under dry conditions is unclear. When the low pressure seal, the seal opening force is small, the impact of viscous friction characteristics of hydraulic O-ring seals to dry gas is more prominent.

 

The basic requirements for hydraulic O-ring

 

1. Hydraulic O-ring has a certain mechanical properties such as tensile strength, elongation.

 

2. appropriate elasticity and hardness, compression and deformation rate is small.

 

3. Hydraulic O-rings have high temperature and low temperature, high temperature does not decompose, softening, hardening at low temperatures.

 

4. Adaptability and working media, no swelling, decomposition, small hardening and other adverse reactions.

 

5. The oxygen-resistant performance is better and also better anti-aging properties, the best durability and long life.

 

6. Hydraulic O-ring wear, Oh, have no metal abrasion.

 

7. easy molding or secondary processing, and must be cost-effective products.