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Tungsten crucible
Ⅰ、Physical and chemical properties
1 Purity ：W≥99.95%；
2 Density：≥18.2g/cm3；
3 Application temperature environment：2300℃。
Ⅱ、Measurements and tolerances
Unit：mm
|
Delivery condition |
Specification |
Tolerance |
Thickness |
Roughness （μm） |
||
|
Diameter |
Height |
Diameter |
Height |
|||
|
Sinter |
10~500 |
10~750 |
±5.0 |
±5.0 |
8~20 |
|
|
Finished sinter |
10~450 |
10~550 |
±0.5 |
±1.0 |
7~18 |
＜2.5 |
Special sizes can be manufactured based on customers' requirements
Ⅲ、Manufacturing process and equipment
|
Item |
Process |
Equipment |
Quality Check point |
|
1 |
Tungsten powder |
|
1 Purity of tungsten powder |
|
2 |
Sieving |
High frequency vibrating screen |
2 Fsss、HB |
|
3 |
Mixed powder |
V shape mixer |
3 Green strength |
|
4 |
Isostatic pressing |
Isostatic pressing machine |
1 Measurement of rough-processed billet |
|
5 |
Rough billet lathing |
CNC vertical turning machine |
2 Surface quality of rough-processed billet |
|
6 |
IF sintering |
IF induction sintering furnace |
1 Outside measurements of finished product |
|
7 |
Competitive products lathing |
High-accuracy vertical turning machine |
2 Surface quality and roughness of finished product，density |
|
8 |
Package |
|
3 Show certificate of quality |
Ⅳ、Application
Since the melting point of tungsten has reached 3410℃, tungsten crucible (W crucible; wolfram crucible; wolfram barrel; W barrel; wolfram tube,
W tube; W pipe; wolfram pipe; wolfram sleeve; tungsten sleeve; wolfram flange; tungsten flange; W flange; wolfram funnel;
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