Tungsten pipe is mainly used in thermocouple protection tube in high temperature furnace, sapphire single crystal furnace, high temperature sintering furnace and so on
|
Specification |
Outside diameter(6.0~200)×Inside diameter(3.0~180)×Length(50~1000)mm |
|
Density |
19.2g/cm3 |
|
Purity |
99.95% |
Φ(6.0~200)mm×Φ(3.0~180)mm×(50~400)mm
Product implementation standards.GB/T 4187-1984 ,ASTM F288-90
Special specifications of Tungsten according to customer demand design and production.
1. Tungsten tube (Tungsten pipe)has a very high purity, the general purity of more than 99.95%;
2. Its density is more than 18.2g/cm3;
3. The recommended operating temperature should be lower than 2500℃;
4. Black tungsten tube at 2027℃ 0.2965;
5. At 1600℃, the coefficient of thermal expansion is 4.98x10-6.
6. The specific heat capacity at 1400℃ is 0.16J/ g. ° C.
7. Tungsten tube pollution is low.
The characteristics of tungsten pipe mainly include high melting point, high density, high hardness, good corrosion resistance and thermal stability. Tungsten crucible melting point is very high, usually in the use of the environment below 2600℃ will not melt or deformation, which makes it very stable in high temperature environment. In addition, tungsten crucible has high density and hardness, good wear resistance, and can maintain its physical and chemical properties at high temperatures
Tungsten crucible has a wide range of application fields . Due to its high melting point and good high temperature resistance, tungsten crucible is widely used in various high temperature melting and heat treatment processes.
Specific Applications Include
Sapphire growth furnace: in the process of sapphire crystal growth, the high purity and seamless characteristics of tungsten crucible help to improve the success rate of crystal growth and the quality of sapphire.
Quartz glass growth furnace: used for melting and forming of quartz glass.
Rare earth metal smelting furnace: in the smelting process of rare earth metals, the high temperature stability and corrosion resistance of tungsten crucible.
Single crystal growth furnace: used for the growth of various single crystal materials, such as silicon, germanium.
Induction furnace: Tungsten crucible's high temperature properties and corrosion resistance make it an ideal choice for induction heating and melting processes.
The preparation process of tungsten crucible includes the steps of mixing, isostatic pressing, shaping, sintering and finishing, etc. According to different application needs, tungsten crucible can be prepared by different processes, such as powder metallurgy sintering forming, tungsten riveting, tungsten sheet stamping and tungsten sheet spinning.
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