Seamless Tungsten Crucible For Sapphire Crystal Growth in High Temperature Furnace 2000℃
Tungsten crucibles are used as furnace components and fixtures in the hot zone of sapphire growth furnace. These high-temperature materials have high thermal conductivity, low thermal expansion coefficient, and good strength and stability above 2000 ℃.
Condition : Sintering or forging.
| Material | Density | Size |
| w 99.95% | 19.1g/cm3(Forging) | Diameter:10-100mm; High:10-120mm |
| w 99.95% | 18.3g/cm3(Sintering) | Diameter:100-650mm; High:50-850mm |
Measurements of Customized 99.95% Tungsten Crucible(mm):
| Delivery condition | Specification | Thickness | Roughness(μm) |
| Diameter | Height |
| Sinter | 10~700 | 10~1000 | 5~30 | |
| Finished sinter | 10~650 | 10~850 | 7~25 | <2.5 |
Description of Tungsten Crucible:
Tungsten crucible is a crucible made of tungsten. Tungsten crucible has the characteristics of high melting point, high strength and hardness, good high temperature performance, low electrical resistivity, small expansion coefficient and small electron escape work. So tungsten crucible is an important component of sapphire long crystal furnace.
As a container for high temperature environment, tungsten crucible is used in sapphire long crystal field, rare earth smelting, coating and other industries.
Tungsten crucibles have different production processes according to different overall dimensions and service conditions. Common crucible shapes are round, square, strip, V-shaped, etc. The manufacturing process includes sintering forming, welding forming, stamping forming and spinning forming, among which sintering products are most widely used. For micro and small tungsten crucibles, forged tungsten rods can be used for turning or stamping. The welding process of tungsten sheet adopts hot bending of rolled tungsten plate, which is finally fixed by welding. Spinning is suitable for producing thin-wall tungsten crucible with high process requirements.
Tungsten Crucible Application:
In terms of use, tungsten crucibles are widely used in rare earth smelting, quartz glass, electronic spraying, crystal growth and other industries. They are mainly used in industrial furnaces such as rare earth metal smelting furnace, quartz glass smelting furnace, induction furnace heater, high-temperature container of single crystal furnace, sapphire single crystal growth furnace, high-temperature vacuum furnace and so on. The working temperature is generally above 2000 ° C. Note: during the growth of sapphire crystal, the tungsten crucible shall have the characteristics of no internal crack, accurate size, and smooth internal and external walls.
Advantages of Tungsten Crucible Supplied by Sanhui:
We are able to supply a complete set of testing equipment for physical properties like density, hardness, surface roughness and so on. Accordingly, the possible internal injury of tungsten crucible like porosity and crack can be strictly inspected while using the eddy current tester and ultrasonic equipment, so as to ensure the high quality.
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Seamless Tungsten Crucible For Sapphire Crystal High Temperature Furnace 2000℃ Images
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