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Baoji Refractory Metal Developer Co.,Ltd is one of the leading China tungsten crucible manufacturers and suppliers, and as a professional company we have productive factory, welcome to wholesale tungsten crucible products from us.
² Chemical Composition:
Tungsten content |
The sum of other elements |
Content of each element |
≥99.95% |
≤0.05% |
≤0.01% |
² Properties of the products:
—High melting point—3410℃
—High boiling Point—5927℃
—High-density —19.3 g/cm3
—Internal stable structure
—Outstanding thermal conductivity
—Excellent resistance to electrochemical corrosion
—Excellent resistance to oxidation at high temperatures
² Range of use：
Tungsten crucible is widely applied in high temperature vacuum furnace melting environment such as sapphire growing furnace,quartz glass melting furnace,and rare earth melting furnace.The working temperature of tungsten crucible is above 2000℃.
For sapphire crystal growing furnace,high-purity,high-density,no crack tungsten crucible with other features of exact measurement and smooth surface has decisive influence on the success of crystal growth,quality control of pulling crystal,discharging and service life during sapphire growing process.
² Specification：
Delivery condition |
Specification |
Tolerance |
Thickness (mm) |
Roughness (μm) |
||
|
Diameter (mm) |
Height (mm) |
Diameter (mm) |
Height (mm) |
|||
|
Sintering |
10~500 |
10~750 |
±3.0 |
±3.0 |
8~20 |
|
Final Finished |
10~450 |
10~550 |
±0.5 |
±1.0 |
7~18 |
＜3.2 |
Note:Special sizes can be manufactured based on customers' requirements | ||||||
² Manufacturing process and equipment：
Item |
Process |
Equipment |
Quality Check |
1 |
Powder purified |
Purified furnace |
GDMS |
2 |
Isostatic pressing |
Isostatic pressing machine |
Measurement of rough-processed |
3 |
IF forging |
High-accuracy forging machine |
Dimension measurements for product |
4 |
IF sintering |
High temperature vacuum sintering furnace |
Dimension measurements for product |
5 |
Final machining |
High-accuracy turning machine |
Surface quality/ roughness and density |
6 |
Package |
Quality Test Report |
² Advantage of Tungsten crucibles:
—Specially precise forming technology for tungsten crucible body
—Uniform grain with densified microstructure ensures longer life time
—Ready for use parts with precise machining tolerance1
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