Tungsten hot zone
Tungsten thermal zone is widely used in high temperature furnaces, especially in vacuum furnaces and inert atmosphere furnaces, mainly due to the excellent high temperature resistance and mechanical strength of tungsten materials. Tungsten has a melting point of up to 3410 ° C, making it an ideal material for handling extremely high temperatures, and is widely used in high-temperature processes such as tungsten and molybdenum smelting, ceramic sintering, crystal growth and the production of aerospace materials.
1. The basic role of tungsten heat zone
Tungsten thermal zone refers to the use of tungsten material as a heating element, heat shield or support structure in the core area of high temperature furnace to ensure that the furnace can maintain an ultra-high temperature environment. In this kind of high temperature furnace, the tungsten thermal zone can withstand the working temperature of more than 2000 ° C to ensure the heating uniformity and the stability of the furnace atmosphere, which is suitable for the process requiring precise temperature control.
2. Tungsten as heating element
The heating element in the tungsten thermal zone is usually tungsten wire or tungsten rod, which uses the excellent electrical conductivity of tungsten material to generate resistance heat after energizing to achieve high temperature heating. Due to the high temperature resistance of tungsten, it can maintain stable electrical properties at extreme temperatures, so in high temperature furnaces, tungsten heating elements can continue to work for a long time. Compared with other materials, tungsten vapor pressure, not volatile, especially in the vacuum environment, can effectively reduce the material evaporation caused by pollution, to ensure the furnace environment clean.
3. Tungsten heat shield and structural components
In addition to heating elements, tungsten is also widely used as a heat shield and support structure in high temperature furnaces. The tungsten insulation screen is located between the heating element and the furnace wall to reduce heat loss and help maintain a stable temperature in the furnace. Due to the poor oxidation resistance of tungsten at high temperatures, when using tungsten as a hot zone material, vacuum or inert gas (such as argon, helium) is usually chosen to protect the environment to prevent oxidation.
Tungsten is also used as support and structural components in the furnace, such as crucible brackets, heating body support frames, etc. These components need to withstand extremely high temperatures and mechanical pressures, and tungsten's high strength and high temperature resistance make it excellent in these applications. Tungsten can maintain good mechanical stability at high temperatures, reduce the risk of deformation or rupture, and ensure long-term stable operation of the furnace.
4. Advantages of tungsten heat zone
The application of tungsten heat zone in high temperature furnace has significant advantages:
Extremely high heat resistance: Tungsten can operate at high temperatures above 3000 ° C, which makes it suitable for processes requiring extreme high temperature treatment, such as high temperature melting and metal sintering.
Excellent electrical and thermal conductivity: Tungsten has excellent thermal conductivity, which helps to achieve uniform heat distribution in the furnace.
Stability and low pollution: Tungsten has good stability in a vacuum or inert atmosphere, and is not easy to volatilize or react with other materials, ensuring a high purity environment in the furnace.
5. Typical applications
Tungsten thermal zone is widely used in high temperature fields, such as the growth of silicon crystals and silicon carbide crystals in the semiconductor industry, the manufacture of fuel elements in the nuclear industry, and the high temperature treatment of aerospace materials. Tungsten's high temperature stability and durability make it an integral part of these precision processes.
Mosten Alloy can produce tungsten sheet, tungsten block, tungsten foil, tungsten rod, tungsten wire, tungsten processing workpiece according to customer demand.
Mosten Alloy can produce tungsten sheet, tungsten block, tungsten foil, tungsten rod, tungsten wire, tungsten processing workpiece according to customer demand
