Tungsten rhenium thermocouple wire

A, tungsten rhenium thermocouple wire feature

tungsten rhenium thermocouple wire melting point: 3120 - High can use up to 3000 ℃, 3360 ℃, *, it is high temperature resistant metal thermocouple. It has high thermoelectric potential, high sensitivity, does not dissolve in any independent acid, raw material in China is rich in reserves *, cheap price, etc.

2, the name of the product and dividing number:

1. Name: tungsten rhenium 3 - Tungsten-rhenium 25; 5 - tungsten rhenium Tungsten-rhenium 26

2. Index number: WRe3 - Wre25; Wre5 - Wre26

3, product grade, specifications, use temperature scope, tolerance:

class

specifications ( ￠米)

use temperature range

tolerance

,

0. 1

1400- 1800℃

≤±0. 128%

Ⅰ

0. 1, 0. 25, 0. 5

1200- 1800℃

≤±0. 25%

Ⅱ

0. 1, 0. 25, 0. 5

1200- 1800℃

≤±0. 50%

Ⅲ

0. 25, 0. 5

0- 400℃

400- 2300 ℃

+ 4 ℃ or less

plus or minus 1% or less

4, general description of the product and use the matters needing attention.

1. Is extremely WRe3 red; Negative extremely Wre25 blue.

2. Dividing point: the cold end of 0 ℃, the hot end dividing 100100 0120 0140 0160 0200 0 ℃, demand a higher degree is another agreement; ￠0. 1 mm wire with 1554 ℃ palladium wire fixed point calibration, form experiment with pure platinum wire 1769 ℃ calibration.

3. Uniformity: my silk in 1200 ℃ when the head and tail uneven unipolar voltage + 40 or less microvolts.

4. Flexibility: my silk after stabilizing annealing, can its winding six laps without fracture.

5. Delivery status: silk are occasionally after stabilizing annealing delivery, color is silver.

6. Heat by spot welding method: will is negative and qi, with slightly heating pliers clamp on the alcohol lamp, twist 3 - After five laps, with argon arc welding into the original ball.

7. Tungsten-rhenium thermocouples bare wire can only in a vacuum, argon gas and inert atmosphere medium and long-term use; Need to use in the oxidizing atmosphere armoured or airtight heat pipe with isolated air to use for a long time.

8. Tungsten rhenium thermocouple wire storage: occasionally silk using waterproof moisture-proof packaging seal bagging long-term preservation should be placed in glass containing silica gel desiccant drying cylinder.