Tungsten-rhenium Diamond Wire Tungsten-rhenium Diamond Wire 0.5mm Wre Tungsten-rhenium Diamond Wire

0.5mm WRe25 Tungsten Rhenium Wire for Sapphire Growth
Brief Description:Because of the outstanding performance of Rhenium mentioned in the following table, when adding rhenium into tungsten,W-Re alloy are formed. Their electrical property, high-temperature ductility and processing ability are promoted and strengthened to a large extent which are available to the wide application on high temperature parts like heaters,thermocouples and cathode tubes etc.UMM produce customized W-Re alloys products with various specifications in the shapes of wire, rod, pole, plate and other irregular parts.
Tungsten-rhenium wire models are mainly: WRe3, WRe5, WRe20, WRe25, WRe26.
Application:Tungsten can be added 3%, 5%, 25% and 26% of rhenium to form tungsten rhenium alloy for high temperature thermocouple wire and the cathode wire. It has good high-temperature ductility, used in the electronics industry, nuclear industry and aerospace industries.
For details, see the table below:
No.
Name
Type
Dimension
Usage
1.
Tungsten-rhenium wire
WRe3 (contain Re 3%)
D0.5mm
for Sapphire single crystal growth, bundled
2.
Tungsten-rhenium wire
WRe5 (contain Re 5%)
D0.5mm
3.
Tungsten-rhenium wire
WRe20(contain Re 20%)
D0.5mm
4.
Tungsten-rhenium wire
WRe25(contain Re 25%)
D0.5mm
5.
Tungsten-rhenium wire
WRe26(contain Re 26%)
D0.5mm The excellent performances of Rhenium3180℃ High melting pointExcellent high temperature ductilityOver a wide temperature range with high resistivityStrong resistance to chemical corrosionGood oxidation resistance at high temperatureGood thermal shock resistanceLow vapor pressure
Preparation of raw materials - the raw material separation - mixing - reduction treatment - second mixing - pressure sintering - swaging, drawing - Finished
Production Process
1: raw material preparation
Raw materials for the tungsten powder and ammonium rhenium powder, tungsten powder particle size less than 4um, ammonium rhenium size of less than 200um
2: material separation
Tungsten powder and ammonium rhenium powder were separated in the separator, so that agglomerated particles well dispersed
3: Mixing
The separation had separated tungsten powder and ammonium rhenium powder together were loaded efficient mixer mixing, mixing time 10-24 hours
4: reduction treatment
Mixed alloy powder under the protection of hydrogen reduction treatment. Reduction treatment in three stages:
The first stage: the reduction temperature is 200-350 ° time 1-2h
The second stage: the reduction temperature is 400-600 ° time 1-2h
The third stage: the reduction temperature is 700-900 ° time 1-2h
Processing time for each stage of the processing apparatus according to the conditions, the chamber volume, added material may be
5: second mixing
Mixing, mixing time 8-20h alloy powder after reduction by re-loading efficiency blender
6: Pressure sintering
The second alloy powder after mixing is compressed into billet, billet now pre-sintering time 0.4-1h, pre-sintered at a temperature of 2600-3000 ° billet at a temperature of 1100-1300 ° and hydrogen protection and hydrogen under the protection of the final incipient fusion sintering time 1-2h
7: swaging, drawing
Sintered billet in the swaging swaging machine processed into thin rods, thin rod drawing machine drawn into tungsten-rhenium alloy wire
8: Finished
Packing:Each volume 400-600g, per kilogram of 250m-260m.