Application of Vertical Graphite Vacuum Furnace in Aerospace Field
09-03-2025 Author: KJ technology
The vertical graphite vacuum furnace is widely and crucially used in the aerospace industry, with its core value reflected in high temperature stability, vacuum environment control capability, and the unique properties of graphite materials. The specific application scenarios are as follows:
1. Core component manufacturing: dual guarantee of high temperature resistance and chemical stability
Aeroengine components
Seals and bearings: Graphite material is used in aircraft engines to manufacture seals and bearings due to its high temperature resistance (up to 3652 ℃) and chemical stability, effectively preventing high-temperature gas leakage and reducing friction losses, improving engine reliability and lifespan.
Turbine blades: Through high-temperature vacuum treatment in a vertical graphite vacuum furnace, turbine blade materials (such as nickel based high-temperature alloys) can be densified and sintered, eliminating internal defects, improving creep resistance and high temperature resistance, and meeting the extreme working conditions of engines.
Spacecraft structural materials
Graphene reinforced composite materials: The lightweight and high-strength (tensile strength up to 130GPa) properties of graphene make it an ideal choice for spacecraft structural materials. The vertical graphite vacuum furnace achieves uniform composite of graphene and resin or metal matrix through precise temperature control, reducing the weight of spacecraft and improving overall performance.
Throat lining material
In small rocket solid rocket engines, graphite material's high temperature resistance, erosion resistance, and lightweight properties make it a key material for throat liners. The vertical graphite vacuum furnace optimizes the microstructure of graphite throat lining through high-temperature heat treatment, enhancing its thermal shock resistance and resistance to air flow erosion.
2. Thermal Management and Cooling System: Collaborative Optimization of Efficient Thermal Conductivity and Thermal Protection
Heat sink components and thermal protection layer
The high thermal conductivity of graphite makes it the core material for spacecraft thermal management systems. The vertical graphite vacuum furnace eliminates thermal stress inside graphite materials through heat treatment in a vacuum environment, improves their thermal conductivity uniformity, and ensures the stable operation of spacecraft in extreme temperature environments (such as -180 ℃ to 1500 ℃).
heat radiator
In the thermal control system of spacecraft, graphite radiators help regulate the temperature of the spacecraft by efficiently radiating heat. The vertical graphite vacuum furnace optimizes the surface morphology and emissivity of the graphite radiator by precisely controlling the heat treatment process, thereby improving its thermal radiation efficiency.
3. Electronic and Electrical Systems: Dual Function of Conductivity and Electromagnetic Shielding
Battery negative electrode material
In the field of aerospace lithium-ion batteries, graphite is used as the negative electrode material. Through high-temperature purification treatment in a vertical graphite vacuum furnace, impurities are removed and material purity is improved, significantly increasing battery capacity and cycle life.
Conductive agents and electromagnetic shielding materials
The conductivity of graphite makes it an ideal conductive agent and electromagnetic shielding material in aerospace electronic systems. The vertical graphite vacuum furnace optimizes the dispersion and conductivity of graphite conductive agents through heat treatment in a vacuum environment, improving the signal transmission efficiency and anti-interference ability of electronic devices.
4. Heat treatment and processing equipment: the core support of high-end manufacturing processes
Solid solution aging treatment of high-temperature alloys
One of the key applications of vertical graphite vacuum furnaces in the aerospace field is solid solution aging treatment of high-temperature alloy blades. By precise temperature control in a vacuum environment (within ± 5 ℃), residual stress inside the blades is eliminated, and their creep resistance and fatigue strength are improved, ensuring the long-term stable operation of the engine in high temperature and high pressure environments.
Vacuum Casting and Electron Beam Welding
In the manufacturing process of spacecraft, the vertical graphite vacuum furnace provides a non oxidizing and non polluting processing environment for vacuum casting and electron beam welding. For example, in the welding of titanium alloy spacecraft structures, the vacuum environment effectively suppresses the formation of oxide films, improves the quality of welded joints, and ensures structural strength and sealing.
5. Aerospace Sensors and Propulsion Systems: Breakthroughs in Lightweight, High Strength, and High Sensitivity
Aerospace sensors
The large specific surface area and high electron mobility of graphene make it potentially applicable in aerospace sensors. The vertical graphite vacuum furnace produces highly sensitive gas sensors by precisely controlling the growth and transfer process of graphene, which are used to detect gas composition and its changes in low orbit space environments.
Propulsion and power system
Graphene, as a lightweight and high-strength material, has applications in aerospace propulsion and power fields, including the manufacture of efficient combustion chambers and nozzles. The vertical graphite vacuum furnace optimizes the microstructure of graphene composite materials through high-temperature heat treatment, enhances their high-temperature resistance and mechanical strength, and provides more efficient power support for spacecraft.
