WRe wire tungsten-rhenium wire for Sapphire single crystal growth bundled
tungsten-rhenium wire models are mainly: WRe3, WRe5, WRe20, WRe25, WRe26.
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
|
Tungsten-rhenium wire surface smooth, burr, uniform diameter.
Production Process
Preparation of raw materials - the raw material separation - mixing - reduction treatment - second mixing - pressure sintering - swaging, drawing - Finished
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.
