Tungsten-Rhenium Alloy Purpose and General Description

1 , the level of tungsten rhenium alloy products , specifications, use , temperature range, tolerance :

Level Specification (φmm) Operating temperature range (℃) ; The tolerance
Special 0.1 1400-1800 ≤ ± 0.128% t
Ⅰ 0.1; 0.5 ; 1200-1800 ≤ ± ; 0.25% t
Ⅱ 0.1; 0.5 ; 1200-1800 ≤ ± 0.50 % t

2 , the use of tungsten- rhenium alloy products : tungsten added 3 %, 5 %, 25 % and 26% of rhenium, tungsten rhenium alloy formation . Tungsten- rhenium alloy has good electrical properties and ductility and workability , can be used in high temperature thermocouple wire and the cathode wire.

3 , tungsten rhenium alloy general description of products and precautions :

①. Was extremely tungsten rhenium 3 ; tungsten- rhenium 5 . Extremely negative tungsten rhenium 25 ; tungsten- rhenium 26.

②. Temperature point : the cold end is 0 ℃, the hot side temperature 100,1000,1200,1400,1600,2000 ℃; φ0.1mm wire with 1554 ℃ palladium wire point calibration, in the form of pure platinum wire test 1769 ℃ Calibration .

③. Uniformity: Even when the wire unipolar head and tail at 1200 ℃ uneven potential ≤ ± 40 microvolts.

④. Flexibility: thermocouple wire annealing stabilized after six laps wound itself can not break.


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