WRe3-WRe25/WRe5-WRe26 Tungsten Rhenium Thermalcouple Wire/cable

Tungsten-Rhenium Thermocouple Wire

Product Information

Tungsten-rhenium thermocouples were the first successful refractory metal thermocouples developed by Goedecke in 1931 and developed in the 1960s and 1970s. The tungsten-rhenium thermocouple has a wide temperature range, large thermoelectric value, high sensitivity, good

linearity of temperature and thermoelectric potential, fast temperature measurement reaction and good thermal stability, and is a good thermal sensing material. Suitable for high temperatures and temperature measurement in vacuum, reducing atmospheres and inert atmospheres, which is unmatched by other types of thermocouples.

Classification of tungsten-rhenium thermocouples There are two types of tungsten-rhenium thermocouples that are listed in national standards in China:

A. Tungsten Rhenium 5- Tungsten Rhenium 26, its positive electrode nominal composition is 95% Tungsten, 5% Rhenium, the nominal composition of the negative electrode is 74% Tungsten,  26% Rhenium . The graduation number is WRe5-WRe26, shorthand: W-Re5/26 (ASTM graduation number: C).

B. Tungsten Rhenium 3-Tungsten-Rhenium 25, whose nominal composition of the positive electrode is 97% Tungsten,  3% Rhenium, and the nominal composition of the negative electrode is 75% Tungsten and 25% Rhenium. The graduation number is WRe3-WRe25, shorthand: W-Re3/25 (ASTM graduation number: D).

Temperature

the maximum use temperature of tungsten rhenium thermocouple can reach 2800 ° C, can be more than 2300 ° C, the data is dispersed, so the use temperature is best around 2000 ° C.

Working Environment

tungsten-rhenium thermocouple bare wire is very easy to oxidize, suitable for use in inert or dry hydrogen, or with a dense protective tube to isolate it from oxygen to use. The bare wire cannot be used in a carbon-containing atmosphere (for example, in a hydrocarbon-containing atmosphere, and the temperature is more than 1000 ° C, which is corroded). Tungsten or tungsten ruthenium tends to form stable carbides in a carbon-containing atmosphere, so that its sensitivity is lowered and brittle fracture is caused, and in the presence of hydrogen, carbonization is accelerated.

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Application

At present, the temperature above 1800 °C is measured, and the non-contact method is often used, but the error of this method is large, and the true temperature can be accurately measured by the contact method. In high-temperature thermocouples, precious metal thermocouples are expensive and the maximum temperature can only be below 1820 °C, while tungsten-rhodium thermocouples not only have high temperature limit, but also good stability, so tungsten-rhodium thermocouples are in metallurgy, building materials, aerospace, Industries such as aviation and nuclear energy are widely used.

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Suzhou Chuanmao Metal Materials Co., Ltd. is located at No. 583, Sunwu Road, Qikou Ancient Town, Wuzhong District, Suzhou, with convenient transportation and abundant resources. The environment is beautiful and outstanding. Our company focuses on the business strategy of international metal materials, based on domestic and overseas, and accelerates development. The global metal materials business and a wide product portfolio are among the strong suppliers of metal materials in the Yangtze River Delta region. They have established long-term and stable cooperative relations with many manufacturers and agents. The company adheres to the principle of people-oriented and customer first. With the concept of honesty and trustworthiness, quality and quantity, we will continue to innovate, adhere to development, and realize the rare metal industrial chain integrating retail, warehousing, logistics and distribution. Our business scope covers the whole country. The company's main business: magnesium alloy, molybdenum alloy, tungsten alloy, titanium alloy, tin alloy, nickel alloy, nickel titanium alloy, high temperature alloy, tungsten high specific gravity alloy, low melting point alloy, rare metal and so on. Chuan Mao Metal sincerely hopes to work together with you to create a brilliant future! ! !

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