Tungsten wire has a wide range of application cases in the aerospace field, mainly due to its excellent properties such as high melting point, high density, corrosion resistance and mechanical strength. The following are some specific application cases:
- Heat shielding and thermal insulation layer
Application: Tungsten wire is often used to make high-temperature resistant heat shielding and thermal insulation layer.
Case: When an aerospace vehicle enters the atmosphere or flies at high speed, the surface temperature will rise sharply. At this time, the heat shielding layer made of tungsten wire can effectively protect the internal equipment and personnel from high temperature damage. For example, fine woven tungsten wire fabric can be used as a reinforcement layer of the outer thermal protection system, combined with ceramic matrix composites or carbon-carbon composites to reduce heat conduction to the internal structure.
- Conductive material
Application: Tungsten wire has stable conductivity at high temperatures, so it is used as a conductive material.
Case: Tungsten wire can be used as an electric heating element or current lead in a high temperature environment. Its high resistance and oxidation resistance enable it to reliably conduct current in extreme environments.
- Rocket engine components
Application: Tungsten wire is used to manufacture some high-temperature components in rocket engines.
Case:
Thermocouples, igniters and propellant nozzles: These components need to work at extreme temperatures, and tungsten’s high melting point and heat resistance make it an ideal material.
Rocket engine nozzles and combustion chambers: Finely woven tungsten-containing fabrics can be embedded in carbon-based or ceramic matrices to resist the high temperature (above 3000°C) and high-speed particle scouring of the gas flow. For example, tungsten wire fabrics have played an important role in both liquid rocket engines (such as the SpaceX Raptor engine) and solid rocket engines.
- Radiation shielding materials
Application: Tungsten’s high density makes it an ideal radiation shielding material.
Case: In space, spacecraft are exposed to strong radiation from the sun and the universe. The shielding layer woven with tungsten wires can effectively block high-energy radiation such as X-rays and gamma rays, protecting sensitive electronic equipment and astronauts in spacecraft from harmful radiation. For example, in nuclear-powered spacecraft or ship reactors, tungsten wire fabrics can be compounded with boron-containing polyethylene for neutron shielding.
5 Composite reinforcement materials
Application: Tungsten wire can be used as a reinforcement material in composite materials.
Case: In applications that require high strength and high temperature resistance, tungsten wire reinforced composites can provide better mechanical properties. For example, when manufacturing heat-resistant structural parts or high-strength composites, tungsten wire can be used as a reinforcement and woven into a metal-based composite material with titanium alloy or nickel-based superalloy.
- Inertial Navigation System Mass Block
Application: Tungsten wire or tungsten alloy block is used as a high-density mass block.
Case: In the inertial navigation system, the mass block made of tungsten wire can provide higher inertia, thereby improving the stability and accuracy of the navigation system.
- Welding and Thermal Spraying Technology
Application: Tungsten wire is also used in high-temperature welding and thermal spraying technology.
Case: Tungsten wire is used as an electrode material in high-temperature welding technologies such as tungsten inert gas arc welding (TIG) to ensure the stability and quality of welding. Its excellent high temperature resistance and corrosion resistance are suitable for use in harsh environments.
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