Tungsten-Rhenium Alloy Wire WRe25
1. Description of Tungsten Rhenium Alloy Wire WRe25:
Tungsten rhenium alloy wire (tungsten rhenium alloy wire) or sapphire rhenium alloy wire (tungsten rhenium alloy wire for Sapphire) is an alloy composed of tungsten as the base and rhenium element added, which is a kind of tungsten alloy. Typical rhenium contents in this alloy are: 1%, 3%, 5%, 20%, 25% and 26%, etc.
2. Common size and tolerance of Tungsten Rhenium Alloy Wire WRe25:
| Type | WRe5/26,WRe3/25 |
| Diameter(mm) | 0.25,0.35,0.5,1.0 |
| Tolerance | ±0.02 |
3.Performance of Tungsten Rhenium Alloy Wire WRe25:
High melting point, high strength, high hardness, high plasticity, high recrystallization temperature, high resistivity, low vapor pressure, low electron work function, and low plastic-brittle transition temperature are only a few of the outstanding qualities of tungsten-rhenium alloy. The combination of low-rhenium alloy and high-rhenium alloy wire results in a thermocouple with a high thermoelectric potential value in addition to the tungsten-rhenium alloy's previously mentioned features.The relationship between thermoelectric potential value and temperature of various types of tungsten-rhenium thermocouples Common type of tungsten-rhenium alloy wire for single crystal sapphire binding: W-25Re, diameter 0.5mm.
1). The distribution of rhenium in tungsten-rhenium alloy wire is uniform, and the fluctuation range of rhenium content is controlled at 30.15%;
2). A single billet weighs 3 kg;
3). To the diameter of 0.39mm, the yield of tungsten-rhenium wire is not less than 75%;
4). The diameter of the tungsten-rhenium filament is uniform.
4. Thermoelectric Characteristics and Allowable Deviation of Tungsten Rhenium Alloy Wire WRe25:
| Thermocouple Type | Temperature range℃ | Allowable deviation |
| WRe3/25 | 0~400 | ±4.0℃ |
| 400~2300 | ±0.25%t |
| WRe5/26 | 0~400 | ±4.0℃ |
| 400~2300 | ±0.5%t |
| Note: “t” is the measured temperature |
5. Production Process of Tungsten Rhenium Alloy Wire WRe25:
There are two kinds of powder metallurgy method and smelting method for preparing tungsten-rhenium alloy. Powder metallurgy method is commonly used in actual production. The tungsten-rhenium alloys are created using the following powder metallurgy method:
Preparation of tungsten-rhenium pre-alloyed powder → hydrogen reduction → pressing (molding or isostatic pressing) → sintering (vertical melting sintering or medium frequency induction sintering) → pressure processing (including extrusion, rolling, swaging and wire drawing, etc.).
Preparation of tungsten-rhenium pre-alloyed powder commonly used solid-solid method (tungsten powder mixed with rhenium powder, tungsten trioxide powder mixed with ammonium rhenate powder), solid-liquid method (tungsten powder mixed with ammonium rhenate solution, tungsten trioxide powder mixed Mixed with ammonium rhenate solution), liquid-liquid method (mixed with ammonium tungstate solution and ammonium rhenate solution and prepared by spray drying or other methods), etc.
The hydrogen-reduced tungsten-rhenium alloy powder can be formed by mechanical pressing and steel die pressing, or isostatic pressing (uniform green density). The compacted bar can be sintered by direct energization vertical melting or cP, N induction indirect heating sintering to obtain a tungsten-rhenium alloy bar with a relative density of 92% to 95%. Isostatic pressing and medium frequency induction heating sintering yield the highest quality billets with the best uniformity and consistency of all production methods.
Please click below button for learn more our products.
Product Tags:
|
|
WRe25 Tungsten Products Tungsten Rhenium Alloy Wire Tungsten Alloy Wire Tungsten Filament Wire In Coil Wolfram Wire Images
|
