Tungsten-Rhenium Wire Thermocouples Classification and Use

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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