Industri Nyheder

Diskussion om livsindeks og rationalitet af sæler

2018-11-16
På grund af mangler i tætningsmaterialet, usikkerheder i forarbejdning og brug, er der ingen garanti for, at levetiden for hver forsegling vil være konsistent. For det andet skal vi forstå testmetoden for sællevetid. Livstesten er en destruktiv test, levetiden måles, og forseglingen fjernes. I det konventionelle tilfælde måles forseglingens levetid ved prøveudtagning. I et stort antal materialer udtages en lille mængde prøver fra sælerne med de samme behandlingsbetingelser for testning, og levetiden af ​​sælerne estimeres ud fra testresultaterne.

 

To understand the rationality of the life of the seal, it is also necessary to understand the meaning of the life indicator of the seal. The life indicator is a probabilistic indicator, such as the most used mechanical oil seal in a car, and its life is based on the integrity rate. Taking 1000 mechanical oil seals as samples for life test, there may be the following situation: 1 mechanical oil seal is damaged when running 100 hours, 2 mechanical oil seals are damaged when running 100,000 hours, 5 mechanical oil seals are damaged when running 150,000 hours, running 1000000 When there were 10 mechanical oil seals damaged as a child, the rated life was 150,000 hours with a 95% good condition and 1000000 hours with a 90% perfect condition. In other words, your car is equipped with a mechanical oil seal seal with a rated life of 1,000,000 hours. It is also in accordance with the probability index when it is destroyed for 100 hours.