Tungsten-rhenium wire thermocouple temperature

Its maximum temperature can reach 2800 ℃, however, higher than 2300 ℃, the data is scattered. Therefore, the use of temperature, preferably at about 2000 ℃.

The use of tungsten rhenium wire thermocouple atmosphere

Easily oxidized tungsten-rhenium thermocouples, suitable for hydrogen in an inert or dry use, or dense protective tube isolated in order to use it with oxygen. Carbon-containing atmosphere can not be used (as in the use of hydrocarbon-containing atmosphere, the temperature exceeds 1000 ℃ i.e. by corrosion). Tungsten or tungsten-rhenium in a carbonaceous atmosphere is easy to form a stable carbide, that reduce the sensitivity and cause brittle fracture, in the case of the presence of hydrogen, is accelerated carbonation.
5, tungsten-rhenium thermocouples antioxidant. The issue has been a subject of concern to scholars at home and abroad, and is committed to study and solve. Our company adopts the international advanced making process, successfully developed a high temperature and pressure fabricated W-Re thermocouple, the temperature of the product range is 0 ~ 1800 ℃, widely used in metallurgy, coking, chemical furnace, heat treatment, glass and other industries, it has a high accuracy, low price, stable performance, the work atmosphere free from restrictions, etc., instead of platinum and rhodium thermocouple is the ideal product. I produced the W-Re thermocouple in Zhuzhou Cemented Carbide Works, Zigong Cemented Carbide factory and Shenyang Branch of the instrument, such as units, widely used, the performance reached the level of similar foreign products.


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Tungsten-rhenium thermocouples with temperature a good linear relationship between electric potential, thermal stability, reliable, cheap, etc., can be directly measured liquids, steam and gases such as temperature. Tungsten-rhenium thermocouples can partially substitute platinum-rhodium thermocouple as high metallurgical industry, high-temperature electronic structure of thermoelectric systems engineering and space vehicles, ultra-high temperature nuclear reactors measurement tools.

Tungsten-rhenium thermocouples for temperature dependence of thermopower meet ZBN05003-88 indexing table, equivalent ASTME696-84 standards. In a vacuum, reducing, inert atmosphere, it is possible within the range 0 ~ 2300 ℃ use. Tungsten-rhenium thermocouple protection tube using a special tungsten rhenium even can at 1600 ℃ under oxidizing atmosphere, long-term use, its price is lower than the platinum-rhodium thermocouple.

Tungsten-rhenium thermocouples is 1931 by Goedecke (Ge virtues g) first developed out at 60 to 70 years to develop the most successful refractory metal thermocouples. Tungsten-rhenium thermocouple is characterized by: a high melting point hot wire (3300 ℃), vapor pressure, easily oxidized; in a non-oxidizing atmosphere, good chemical stability. Emf, high sensitivity, the most important is cheap.

Tungsten-rhenium thermocouples indexing with W / (W-26Re), (W-3Re) / (W-25Re), (W-5Re) / (W-26Re) and (W-5Re) / (W-20Re ), etc. Long-term use temperature of 2000 ~ 2400 ℃, short-term use up to 3000 ℃.


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1, Tungsten rhenium thermocouples classification. Included in the national standards of tungsten rhenium thermocouples in two ways:

  A, Tungsten rhenium 5 - 26 tungsten rhenium, its positive nominal composition of 95% tungsten, 5% rhenium, tungsten cathode a nominal composition of 74%, 26% rhenium. Indexing number of WRe5-WRe26, abbreviated: W-Re5/26.

B, 3 tungsten rhenium - tungsten rhenium 25, its positive nominal composition of 97% tungsten, 3% rhenium, tungsten cathode a nominal composition of 75% and 25% rhenium. Indexing number of WRe3-WRe25, abbreviated: W-Re3/25.

2, The use of tungsten-rhenium thermocouples. Current measuring a temperature above 1600 ℃, the use of non-contact method, however, the method of error is large, such as the contact law can accurately measure the real temperature. In the high-temperature thermocouples, precious metal thermocouples are expensive and the maximum temperature only in 1800 ℃ below, while tungsten rhenium thermocouple temperature limit is not only high, but good stability, therefore, tungsten rhenium thermocouples in metallurgy, building materials, aerospace , aviation and nuclear industries have been widely used. Rich resources of tungsten, tungsten-rhenium thermocouples cheap, can be partially substituted precious metal thermocouples, it is the high-temperature test promising field of temperature materials.


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Tungsten alloy armor piercing fin stabilized discarding sabot (APFSDS) is a type of ammunition which, like a bullet, does not contain explosives and uses kinetic energy to penetrate the target. Tungsten alloy APFSDS is adopted by Type 99 main battle tank.

The Type 99 main battle tank, also known as ZTZ-99 and WZ-123, developed from the Type 98G (in turn, a development of the Type 98), is a third generation main battle tank (MBT) fielded by the Chinese People's Liberation Army. It is made to compete with other modern tanks. It is currently the most advanced MBT fielded by China. The Type 99 main battle tank is a successor to the Type 98G tank manufactured for the People's Liberation Army (PLA).

The 3rd generation kinetic energy armour-piercing ammunition for the 125mm tank gun is the tungsten alloy APFSDS round with a 30:1 length/calibre tungsten alloy penetrator and is claimed to be capable of penetrating 860mm steel armor at a distance of 2,000m.



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