Why would bimetallic thermometer sheath fracture?

Bimetallic thermometer is very common in industrial equipment, usually in order to convenient installation, we will give it with a same bimetallic thermometer sheath. But in actual use process, occasionally, the phenomenon of the bimetallic thermometer sheath rupture. Today we say why bimetallic thermometer sheath will break? According to our many years of experience in production of the bimetallic thermometer, summarizes the leads to the cause of the bimetallic thermometer sheath is as follows: 1. Bimetallic thermometer sheath is impacted by the high velocity, heavy load, the stress over speed; 2. Bimetallic thermometer sheath itself defects, lead to stress concentration, easy to cause fracture; 3. Using the environment vibration, bimetallic thermometer sheath fatigue damage; 4. When the fluid flows through the bimetallic thermometer sheath, bimetallic thermometer sheath induced vibration, namely the bimetallic thermometer sheath vortex shedding frequencies and fluid resonance frequency. The resonance phenomenon causes bimetallic thermometer sheath damage speed, until the break. So, know the reason of the bimetallic thermometer sheath rupture after, we can try to avoid these problems in use process, extend the use of the bimetallic thermometer sheath.