Everyone knows that rubber seals play an important role […]
Everyone knows that rubber seals play an important role in mechanical equipment. The quality of the seals will directly affect the equipment, but many people may never know the factors that affect the quality of the seals.
1. Internal pressure. This is an important main reason that affects the quality of rubber seals. The level of pressure and the pressure cycle of different levels have a relatively large impact on the damage of the seal. The higher the pressure, the greater the factors affecting the seal, because it drives other sealing factors such as temperature, speed, seal material, and the gap between the seals, the gap between the piston and the cylinder head.
2. Temperature and friction. Under working conditions, it is difficult to describe the relatively high and low use temperatures of the rubber seal material, because this is the result of a series of different factors affecting the specifications and models of the seal.
The working temperature of the piston and the piston rod are different, and their specifications and conditions must be distinguished and separated. Secondly, the surface roughness of the seal product, surface characteristics, pressure, medium, temperature, seal material, type and operating speed are all factors that affect the seal.
3. Surface treatment of rubber seals. The characteristics of the cylinder piston and the surface of the piston rod have a greater impact on the life of the seal. Surface characteristics are usually defined by the value of surface roughness RA, which is the arithmetic average of the absolute value of the surface shape deviation from the center line. However, these values can never fully represent the influence of the surface condition on the seal. This is because even under the same roughness, different surface shape characteristics can lead to different degrees of seal wear on the seal.