Advantages of tungsten-rhenium alloy wire

Rhenium tungsten wire has high melting point (3100 ℃), high strength (1600 MPa), high hardness (900 Hv), and the fine tungsten rhenium alloy wire mainly be used as the liquid steel temperature measuring thermocouple materials quickly, compared with platinum rhodium precious metal thermocouple materials, tungsten rhenium thermocouple wire high temperature measurement (highest use temperature of 2800 ℃, the highest platinum rhodium thermocouple wire using temperature is 1700 ℃), high thermoelectric emfs, temperature measurement precision, measurement rate is high, the cost is low. Because of these advantages of micro-tungsten rhenium alloy wire, in the field of liquid steel temperature measurement, micro-tungsten rhenium thermocouple wire is gradually replacing platinum-rhodium thermocouple wire, the industry has been increasingly attention, the annual demand of more than 500kg, and this amount is increasing year by year.