Huizhou Pengchengrui Technology Co., Ltd.

The core logic of the application of nickel titanium memory alloy screws in industry and aerospace is not to replace ordinary screws, but to use shape memory effect, super elasticity, self tightening and anti loosening, and lightweight to solve scenario problems that traditional fasteners cannot solve. The following is a summary of application scenarios for Wuge Nickel Titanium Alloy, with a focus on engineering practicality.

1、 Typical Applications in the Aerospace Field

Requirements for screws in aerospace: anti vibration, anti loosening, lightweight, reliable at extreme temperatures, and unmanned assembly. Nickel titanium screws match perfectly.

（1）Satellite/spacecraft deployment mechanism (most typical)

Folding locking and releasing of solar panels, antennas, and detector brackets

Principle:

At low temperatures, nickel titanium screws shrink less, making assembly easier;

After entering the track, it is heated by sunlight and automatically locks back to its original size without the need for a motor, spring, or buckle.

Advantage:

No mechanical wear and tear, extremely high reliability

Lightweight, significantly reducing weight compared to titanium alloy screws

Never loosen under space vacuum and high and low temperature cycles

（2） High temperature anti loosening fastening for aircraft engines

Used for engine housing, nozzles, and pipe supports

Nickel titanium screws expand due to heat and generate memory recovery force, continuously providing pre tightening force

Solve the problem of traditional screws loosening, falling off, and breaking under high temperature vibration

（3）Adaptive fastening of aircraft structural components

Wing, tail wing, cabin door and other parts subjected to alternating airflow loads

Super elasticity can absorb vibration and impact, and its fatigue life far exceeds that of steel/titanium screws

Reduce fatigue cracks in fasteners and improve flight safety

（4）Lightweight connection of rockets/missiles

Fixed accessories of the arrow body, instrument compartment, and control components

Low density, high strength, and corrosion resistance

Suitable for weight sensitive aerospace structures

Nickel titanium memory alloy screw

2、 Mature applications in the industrial field

The industrial end places greater emphasis on anti loosening, vibration reduction, high temperature resistance, maintenance free, and intelligent assembly.

（1）Anti loosening of high-voltage transmission lines/power grid fittings

Mature engineering applications have been developed domestically:

Tightening of iron towers, wire clamps, shock hammers, and tension clamps

Under strong winds, icing, and high-frequency vibration environments

Nickel titanium screws utilize super elastic damping and memory self tightening, never loosening for life

Significantly reduce inspection, replacement, and breakage accidents

（2）Anti vibration fastening of rail transit/automobile chassis

High speed rail, subway bogies, suspension systems

New energy vehicle battery pack, motor, chassis fasteners

Under long-term bumpy vibration, traditional screws are prone to loosening, while nickel titanium screws can dynamically compensate for pre tightening force

Enhance security and reduce maintenance

（3）Locking of precision equipment/optical instruments

Lithography machine, detection equipment, radar, laser device

Require small displacement and high stability

Nickel titanium screws can achieve micro displacement drive, constant temperature locking, and zero backlash

（4）Petrochemical/high temperature and high pressure pipelines

Tightening of downhole tools, wellhead equipment, and high-temperature valves

Temperature resistance, corrosion resistance, and creep resistance

Maintain locking force at high temperatures without relaxation

（5）Intelligent assembly and automation production line

Using temperature controlled deformation to achieve:

Hot assembly: Low temperature installation → Heating locking

Controllable disassembly: easy to remove by cooling again

Structure suitable for precision components and not suitable for strong disassembly

3、 Core advantages of nickel titanium screws in industry/aerospace (compared to ordinary screws)

（1）Self tightening and anti loosening

Continuous recovery force is generated after heating/stress, and the vibration environment almost never loosens

（2）Super elastic vibration reduction

Can withstand large deformations without breaking and absorb impacts

（3）Lightweight

About 40% lighter than steel, more suitable for aerospace weight reduction than ordinary titanium alloys

（4）Fatigue resistance and long lifespan

The lifespan under alternating load is several times that of ordinary fasteners

（5）Temperature control assembly

Can achieve unmanned, minimally invasive, high-precision assembly and disassembly

（6）Corrosion resistance

Suitable for harsh environments such as ocean, chemical, and space

4、 Typical usage mode (in engineering)

Cooling assembly: Softened at around 0 ℃, easy to screw in

Heating locking: automatically tighten and apply pressure when heated to the phase transition temperature

Working state: Super elastic vibration absorption, continuous self tightening

Disassembly: It can be easily removed by cooling again without damaging the threads