Rotary Part Of AS-B228 metal bellow mechanical seal

Background Knowledge：
How surface texture reduces friction and wear of mechanical seals

With the rapid development of modern industry, people put forward higher requirements for mechanical seal performance. As an effective means to improve the tribological properties of mechanical parts, surface texture (mainly micro-pits and micro-grooves) has been fully applied in many fields.

One of the more important functions of surface texture is to improve surface bearing capacity and improve lubrication conditions. That is, each microstructure can be considered as a tiny hydrodynamic bearing, which generates additional hydrodynamic pressure in the process of relative motion, so that a thin layer of fluid lubricating film is formed between the friction pairs, so that the two surfaces in contact state are converted to surfaces in non-contact state, which is of great significance for reducing friction and wear of mechanical seals. On the other hand, the surface texture can also play the role of storing wear debris and lubricating oil.