Wear-resistant thermocouple comparison of various kinds of materials

Wear-resistant thermocouple in some special occasions, such as chemical, smelting, power plants, cement plants, etc. , using ordinary thermocouple, heat resistance is easy to damage. On these occasions, therefore, it must adopt wear-resisting thermocouple ( Resistance) 。 The thermocouple ( Resistance) Especially for export, fluidized bed, the coal mill, secondary air temperature coal and cement industry. Many different kinds of wear-resistant thermocouple, now it's time to compare various materials.

1, metal ceramic wear resistance: the protection of silicon carbide ceramic tube, high temperature can reach 1300 ℃, built-in or K S dividing armored core body, specially applicable to the cement preheater, working condition of circulating fluidized bed contour U. S. wear-resisting of temperature measurement.

material composition: SiC

use temperature: 0 ~ 1300 ℃

2, hot blast stove is special wear-resisting, using new type of silicon carbide ceramic protection tube, high temperature can reach 1300 ℃, the soft-core degree high temperature S dividing or B armored core body, specially suitable for hot blast stove temperature measurement.

material composition: SiC

use temperature: 0 ~ 1300 ℃

3, high temperature alloy wear-resistant 1: using special heat-resistant and wear-resistant alloys as temperature measuring external protecting tube and wear-resisting head, built-in armored core body, the erosion of fly ash particles can not only has high corrosion resistance, and under the condition of high temperature on the inner core body can play a good protective effect. Can adopt the flanged or threaded connection, between 0 ∽ 1200 ℃ temperature measurement for a long time, is applied to metallurgical industry is ideal in high temperature, wear-resistant environment temperature sensor.

material:

K1320 heat-resistant wear-resistant alloy temperature: 0 ~ 1200 ℃

4, high temperature alloy wear-resistant 2: adopt special heat-resistant and wear-resistant alloy material as the temperature measuring external protecting tube, built-in armored core body, both has the high corrosion resistant performance of particle erosion, and under the condition of high temperature on the inner core body can play a good protective effect. Can adopt the flanged or threaded connection, between 0 ∽ 1200 ℃ temperature measurement for a long time, is applied to metallurgical industry is ideal in high temperature, wear-resistant environment temperature sensor

material: 3 yc52 or GH3030 heat resistant alloy

temperature: 0 ~ 1200 ℃

5, iron and aluminum ceramic protection tube

iron base containing aluminum and cleverly add A12O3 powder, iron and aluminum porcelain was ( TLC） Special gold, iron and aluminum alloy porcelain made thermocouple ( Resistance) Protecting tube, become iron aluminum ceramic thermocouple (namely Resistance) - the most critical parts - Iron and aluminum ceramic protection tube. According to working temperature, wear condition, the type of medium, pressure equation, made into different series of iron and aluminum ceramic protection tube, the existing series: TLC, TLC1, TLC2, TLC3, TLC4 and TLC5 six big series.

TLC type: resistance to hydrochloric acid, nitric acid, sulfuric acid, sodium hydroxide, potassium hydroxide solution. Working temperature is divided into 350 ° C and 750 ° C.

TLC1 type: resistance to oxidation, sulfide, resist the corrosion of zinc vapor, has high wear resistance, good thermal shock resistance and working temperature of 1100 ° C. Through actual use in zinc concentrate fluidized bed life 4 months, in pyrite, fluidized bed life 12 months in a fluidized bed and circulating fluidized bed boiler furnace service life of 6 months, in the import and export service life of 6 - ball mill, fan mill 8 months.

TLC2 type: working temperature of 1250 ° C, wear-resisting performance is lower than TLC1 type, compared with ceramic tube thermal shock resistance, high temperature hot strong sex, the working pressure, 16 mpa and other technical indicators, particularly applicable to 1250 ° C indexing number S of the thermocouple protection tube.

TLC3 type: type by TLC2 improvement, TLC2 model characteristics, has improved especially in the wear resistance, much higher than TLC1 type, under the same conditions, can improve the life of two times. Working temperature of 1300 ° C.

TLC4 type: type TLC1 will then have it TLC1 model characteristics, has improved especially in the wear resistance, much higher than TLC1 type, under the same conditions, can improve the life of three times the working temperature of 1100 ° C. Through actual use, import and export temperature measurement in the ball mill with protecting tube life up to 36 months.