How to choose Wear-resistant thermocouple protection tube material?

Wear-resistant thermocouple protection tube material as below:

1 High temperature alloy wear resistant thermocouple: the use of special heat and wear resistant alloy material as the temperature measurement of the outer protection tube, the inner armor of the core, not only has a high corrosion resistance to the erosion of particles, and can play a good role in the protection of the inner core at high temperature.Adopt flange or thread connection form, can carry on temperature measurement between 0 to 1200℃ for a long time.

2 Cermet Wear-resistant thermocouple: recrystallized silicon carbide cermet protection tube, high temperature up to 1300℃, the inner K or S degree armored core, specially suitable for the temperature measurement of high temperature wear-resistant working conditions such as cement kiln tail, circulating vulcanization bed.

3 Composite casting wear resistant alloy Wear-resistant thermocouple: composite armor technology with high temperature alloy matrix to add wear resistant particles, precision casting.Does not need to turn the processing, the casing hardness is high, the high temperature oxidation resistance, has a few casting defects but does not affect the high temperature wear resistance and sealing, is the use of the most common high temperature wear resistance casing, the price is moderate, the temperature of use 800 ~ 1200℃.

4 Ion-injected tungsten carbide Wear-resistant thermocouple: tungsten carbide particles are injected on the casing surface with stainless steel as the matrix by ion-injected technology.With high hardness, high strength, high toughness, especially wear-resistant, wear-resistant layer thickness 0.5 ~ 1.5mm, hard and tough, the minimum diameter can be 8, good surface quality, use temperature 0 ~ 800℃.The service life of coal mill in power plant is more than 2 years.

5 Iron and aluminum porcelain protection tube Wear-resistant thermocouple: iron base aluminum and cleverly added A12O3 powder, that is, iron and aluminum porcelain (TLC) is made of gold, iron and aluminum porcelain alloy into thermocouple (resistance) protection tube, that is, become the most critical parts of iron and aluminum porcelain thermocouple (resistance) -- iron and aluminum porcelain protection tube.