Tungsten-Rhenium Thermocouple Wire Fast

A Tungsten Rhenium Thermocouple Esther Fast Sex :

The melting point of tungsten- rhenium thermocouple wire in: 3120-3360 ℃, can be used up to 3000 ℃, it is the most high-temperature metal thermocouples. It has a high thermoelectric power , high sensitivity, insoluble in any separate acids, abundant raw materials in China , cheap, etc. .

Second, tungsten rhenium thermocouple fast product standards :

1, JB/T9496-99 tungsten- rhenium thermocouple wire .
2, JB/T9497-99 tungsten- rhenium thermocouple wire and indexing table ( equivalent to using U.S. ASTME696-84) standard .
3, JJG576-88 work with tungsten rhenium thermocouple test procedures .
4, JB/T5401-91 rapid measurement of the temperature of molten steel with tungsten rhenium thermocouple wire .
5, JB/T5402-91 rapid measurement of the temperature of molten steel with tungsten rhenium thermocouple wire , thermal EMF test methods .

Three , tungsten rhenium thermocouples product names and fast indexing :

1 , Name : Tungsten rhenium 3 - tungsten rhenium 25 ; tungsten rhenium 5 - tungsten rhenium 26.
2 , Sub-Degree No. : WRe3-WRe25 (D -type ); WRe5-WRe26 (C -type ).

Four , tungsten rhenium thermocouple products quickly grade , size, temperature range, tolerance :

Five , tungsten rhenium thermocouple wire insulation material :

1 , High purity alumina (AL2O3) can be used within at 1800 ℃ .
2 , Yttria (YO2) can be used within at 2000 ℃ .
3 , Beryllium oxide (BeO) at 2100 ℃ or less used, but toxic beryllium high temperature steam .
4 , Thorium oxide (ThO2) at 2300 ℃ or less to use, but has a weak anti- radioactive thorium .

Six , tungsten rhenium thermocouple wire outer protection tube :

1 , Tantalum tube (Ta) within a vacuum at 2480 ℃ use .
2 , A molybdenum tube (Mo) or less at 2300 ℃ vacuum and inert gas atmosphere of hydrogen used .

Molybdenum disilicide tube (Mosi2) or molybdenum silicide coating tube surface air at 1600 ℃ or less and some corrosive medium and long-term use .


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