What does erosion technology damage to mechanical seals include? Machinery Seal

What does erosion technology damage to mechanical seals include?

The erosion technical damage of mechanical seal mainly includes: corrosion of metal ring, corrosion of non-metal ring, corrosion of auxiliary sealing ring and its contact parts. For mechanical seal erosion damage, the main protection methods include scientific material selection, layout design, maintenance and application.

There are many situations where mechanical seals are damaged, and the most common forms of damage are erosion damage, thermal damage and mechanical damage. Among them, erosion damage is more harmful. Due to the special layout of mechanical seals and the difference in working environment and conditions, the forms of erosion damage are also various.

Erosion of mechanical seal Metal ring erosion

The surface is uniformly eroded. If the surface of the metal ring is exposed to corrosive media, and the metal itself is not resistant to corrosion, surface erosion will occur, and the phenomena are leakage, early wear, damage, and sounding. There are two forms of uniform corrosion on the metal surface: film-forming and film-free. Metal corrosion without film is very dangerous, and the corrosion process proceeds at a certain speed, which is mainly caused by wrong material selection. Corrosion of film formation, the passivation film usually has protective properties, but the passivation film on the surface of the materials used for metal mechanical seal rings, such as stainless steel, cobalt, chromium alloy, etc., is destroyed in the friction of the end face. The new film is very difficult to form, which intensifies the galvanic erosion.