Huizhou Pengchengrui Technology Co., Ltd.

Nickel-titanium shape memory alloy coils, with their unique shape memory effect, superelasticity, and good biocompatibility, have important and special applications in various fields such as healthcare, aerospace, industrial refrigeration, and daily consumption, as detailed below:

1. Medical field:

This is one of its core application areas. Firstly, it is used to manufacture various stents, such as cardiovascular stents and neurointerventional stents. The coil can be compressed into a thin and long shape, delivered into the blocked or diseased part of the blood vessel through minimally invasive surgery, and recover its preset shape under human body temperature, supporting the blood vessel to ensure blood circulation and assisting in the treatment of diseases such as myocardial infarction. Secondly, it is used in various interventional devices, such as catheters and guidewires. In surgeries on delicate parts such as the heart and brain, the superelasticity of the coil allows it to flexibly navigate through the complex cavities of the human body without being easily damaged, while accurately reaching the lesion site. Thirdly, it is applied in orthopedics and dentistry, where it can be used to manufacture orthopedic implants such as bone anchors, adapting to the complex morphology of bones and maintaining stability. It can also be processed into components related to orthodontics, with gentle strength and strong resilience, enhancing the effectiveness and comfort of dental correction.

2. Aerospace field:

This field has stringent requirements for the reliability and adaptability of components. Nickel-titanium shape memory alloy coils can be used to manufacture temperature control actuators. For example, in the temperature control mechanism of some internal instruments of spacecraft, when the temperature in space changes, the coil deforms relying on its shape memory effect, automatically adjusting the position or state of the component to ensure that the instrument operates within an appropriate temperature range. In addition, it can also be used as a vibration damping component on spacecraft, utilizing its superelasticity to absorb vibration energy during flight, reduce the impact of vibration on precision instruments, and protect the stable operation of equipment.

Nickel-titanium memory alloy coil

3. Industrial refrigeration field:

The team from Hong Kong University of Science and Technology has constructed an elastic thermoelectric refrigeration device using thin-walled nickel-titanium alloy tubes. This coil generates significant entropy changes when it deforms under stress and changes in temperature. Based on this elastocaloric effect, coupled with a multi-unit architecture design and efficient heat transfer medium, it can achieve refrigeration functionality. The kilowatt-scale refrigeration device developed by them can achieve zero greenhouse gas emissions and is expected to replace traditional vapor compression refrigeration technology in the future, applicable to refrigeration equipment such as air conditioning, and contribute to the development of environmentally friendly refrigeration industry.

4. Daily consumption and civilian fields:

On the one hand, it can be used to manufacture intelligent temperature control components, such as automatic window opening control components for greenhouses. When the temperature rises, the coil deforms to drive the mechanism to open the windows, and when the temperature drops, it restores its shape to close the windows, achieving automatic temperature regulation inside the greenhouse. It can also be used for water temperature control devices in showerheads. When the water temperature is too high, the coil deforms to trigger the pipeline adjustment or closing mechanism to prevent burns. On the other hand, it can be used for high-end consumer electronic accessories, such as hinge-related components for foldable screen phones. The super elasticity and fatigue resistance of the coil can ensure that the hinge can still reset stably after multiple folds, enhancing the durability of the device.