Classification of Tungsten Alloy Fasteners (Part Three)

Tungsten alloy fasteners, with their high strength, high-temperature resistance, and corrosion resistance, play a crucial role in high-demand fields such as aerospace, nuclear industry, and precision machinery.

Different application scenarios impose varied performance requirements on fasteners, and through customized design and process optimization, tungsten alloy fasteners are tailored to specific conditions, ensuring system reliability and safety. Based on different application fields, tungsten alloy fasteners can be classified into turbine blade-specific screws, spacecraft structural bolts, and nuclear fuel assembly fixing screws.

I. Tungsten Alloy Fasteners for Aerospace Applications

The aerospace industry imposes stringent performance requirements on fasteners, necessitating a balance of high-temperature resistance, lightweight design, and high strength. Tungsten alloy fasteners meet these complex needs through material and structural optimization:

Turbine Blade-Specific Screws: Manufactured from high-performance tungsten alloys with optimized compositions to enhance high-temperature strength and fatigue resistance, these screws are used to fix turbine blades in aviation engines. Capable of withstanding high-temperature gas flows and high-speed rotational centrifugal forces, they ensure a tight connection between blades and turbine disks, reducing the risk of failure due to vibration or thermal stress, thereby supporting engine operation safety.

Spacecraft Structural Bolts: Featuring lightweight designs such as hollow structures or composite mandrels to balance high strength with weight control, these are suitable for connecting spacecraft cabin frames or solar panel brackets. Their surfaces are typically coated with special layers to resist space radiation and vacuum environment effects.

II. Tungsten Alloy Fasteners for Nuclear Industry Applications

The nuclear industry demands high radiation resistance, corrosion resistance, and strength from fasteners, where tungsten alloy fasteners demonstrate unique advantages in connecting critical components:

Pressure Vessel Flange Bolts: Made through an integral forging process, these tungsten alloy bolts offer excellent tensile strength and radiation resistance, suitable for sealing connections in nuclear reactor pressure vessel flanges. Capable of withstanding high pressure and long-term radiation exposure, they ensure reactor sealing and safety, requiring rigorous testing to mitigate risks from microscopic defects.

Nuclear Fuel Assembly Fixing Screws: Designed to be compact yet highly precise, these corrosion-resistant tungsten alloy screws enhance the barrier against radioactive substances. Used to secure nuclear fuel assemblies and prevent fuel leakage, their high-precision thread design ensures stable connections, adapting to the extreme chemical and radiation conditions of nuclear environments.

III. Tungsten Alloy Fasteners for Precision Machinery Applications

The precision machinery sector emphasizes dimensional accuracy and wear resistance in fasteners, with tungsten alloy fasteners meeting high standards through precision machining:

Machine Tool Spindle Nuts: Manufactured from high-hardness tungsten alloys, these nuts work in conjunction with spindle lead screws to ensure ultra-high precision in transmission systems. Their strong wear resistance helps maintain thread engagement accuracy within a regulated usage cycle, reducing vibration and errors during machining, making them suitable for CNC machines and precision processing equipment.

Instrument and Gauge Fixing Rivets: These small-sized fasteners, secured using advanced connection techniques like laser welding, help minimize damage risks to precision components compared to traditional riveting. In scenarios such as fixing medical device probes, their adaptability supports high-precision positioning and long-term stability, enhancing reliable operation of instruments in complex environments.

• < Prev
• Next >