NT9203 Memory Alloy Fastening Kit

Memory Alloy Fastening Kit Description

The Memory Alloy Fastening Kit is a high-performance connection solution that integrates shape memory alloy technology with traditional fastening components such as bolts, nuts, and locking rings. Its core feature lies in the shape memory alloy ring, which has temperature-sensing and recovery properties. When exposed to heat, the alloy undergoes a phase transformation, contracting radially and continuously generating centripetal restoring force. This mechanism increases the friction between the nut and bolt, providing anti-loosening capability compared to conventional fasteners. The kit demonstrates performance across a wide temperature range from -40℃ to 350℃, making it suitable for harsh working environments. It offers excellent corrosion resistance, high damping, and strong wear resistance, ensuring long-term durability without degradation. Additionally, the fastening kit is non-magnetic and environmentally friendly, requiring no coating treatment. With high tensile strength and specific strength, it can withstand mechanical stress, absorb vibration, and maintain stable fastening for extended periods. Its self-pressurising effect allows it to remain secure under dynamic loads, reducing maintenance and improving system reliability. These properties give the Memory Alloy Fastening Kit advantages in industries such as aerospace, automotive, railways, marine, petrochemicals, and engineering machinery where safety, stability, and durability are critical.

Memory Alloy Fastening Kit Applications

·         Power and Electrical Systems: Ensures secure, anti-loosening connections in generators, transformers, substations, and switchgear, preventing overheating and improving grid reliability.

·         Automotive Industry: Provides vibration-resistant and durable fastening for engines, transmissions, and chassis components, enhancing vehicle safety and performance.

·         High-Speed Railway: Maintains stable fastening under dynamic loads and vibration, supporting long-term safety in rail connections and critical components.

·         Aerospace and Aviation: Offers lightweight, high-strength, and temperature-resistant fastening solutions for aircraft structures and engines, ensuring safety in extreme conditions.

·         Marine Engineering: Delivers corrosion-resistant fastening for ships, offshore platforms, and underwater equipment exposed to saltwater and harsh environments.

·         Petrochemical and Chemical Plants: Provides non-magnetic, corrosion-resistant fastening in high-temperature and chemically aggressive environments.

·         Engineering Machinery: Enhances the reliability of heavy-duty machines by resisting loosening under high stress, shock, and vibration.

Memory Alloy Fastening Kit Packaging

These Memory Alloy Fastening Kits are shipped in tamper-evident poly bags with protective foam inserts to guard against impact damage. Each bag includes silica gel packets to maintain optimal dryness, while the sturdy outer carton resists crushing. Sealed in a dust-free environment, all components are protected against contamination. Custom labeling and quantity packaging options are available to suit specific stocking requirements. Store in a cool, low-humidity area for best results.

Packaging: Vacuum sealed, Wooden Box, or Customised.

Memory Alloy Fastening Kit FAQs

Q1: How does it prevent loosening?

A1: The shape memory alloy locking ring contracts during heating, increasing the friction between the nut and bolt, which maintains stability and prevents loosening under vibration.

Q2: What are its advantages compared with traditional fasteners?

A2: It offers self-pressurising capability, high tensile strength, excellent corrosion resistance, wear resistance, vibration absorption, and long-term fastening without loosening.

Q3: Does it require special tools for installation?

A3: No, the installation process is similar to traditional fasteners, without the need for special tools or coatings.

Related Information

1. Manufacturing Process

The manufacturing process of the Memory Alloy Fastening Kit begins with the selection of high-quality shape memory alloy materials, which undergo strict composition control to ensure stable phase transformation behaviour and reliable mechanical performance. The alloy is melted, cast into ingots, and processed through forging, extrusion, or rolling to refine its microstructure and achieve the required strength and elasticity. After forming, the material is precision machined into fastening rings with exact dimensional tolerances, ensuring a perfect fit with bolts and nuts. A specialised heat treatment process is then applied to set the memory effect, adjusting the phase transformation temperature and recovery force output to meet different application requirements. Bolts and nuts are manufactured from high-strength steels or compatible alloys and are treated with surface finishing methods such as anti-corrosion coatings or passivation to enhance durability. The fastening rings may also be subjected to surface polishing, colouring, or protective treatments to provide identification and improve environmental resistance. During production, comprehensive testing is conducted, including mechanical strength, anti-loosening performance, vibration resistance, and long-term durability evaluation. Finally, all components are assembled into fastening kits, packaged under standard industrial conditions, and delivered ready for direct installation without requiring special tools or storage conditions.

2. Applications in Advanced Industries

The Memory Alloy Fastening Kit finds broad applications in advanced industries where safety, reliability, and durability are critical. In the aerospace sector, it provides lightweight, high-strength, and heat-resistant fastening solutions for aircraft structures and engines. In high-speed railways, it ensures long-term anti-loosening performance under vibration and dynamic loads. In the automotive industry, it enhances the stability of engines, transmissions, and chassis systems, reducing maintenance and improving safety. Marine and offshore engineering benefit from its excellent corrosion resistance, allowing reliable fastening in saltwater and harsh maritime environments. In petrochemical and chemical plants, its non-magnetic and corrosion-resistant properties ensure secure performance under aggressive chemical conditions. In power and electrical systems, it maintains stable connections in generators, transformers, and substations, reducing failure risks. Heavy engineering machinery also utilises the fastening kit for its ability to withstand high stress, shock, and vibration, guaranteeing long-term operational stability.