Heli-Coil Tang Free Screw Lock is a type of thread insert that provides a permanent, wear-resistant screw thread. It is a type of fastener used to create strong screw joints. The Heli-Coil Tang Free Screw Lock is unique because it does not require a tang for installation, eliminating the need for tang break-off and retrieval. This results in reduced installation time and eliminates the risk of foreign object damage (FOD). The Heli-Coil Tang Free Screw Lock provides a self-locking torque on the male member by a series of chords on one or more of the insert coils. It is commonly used in the aviation industry and meets international standards for technical delivery and aeronautical conditions.
Characteristics | Values |
---|---|
Tang requirement | No tang required |
Tang break and removal | Not required |
Installation time | Reduced |
Foreign object damage (FOD) risk | Eliminated |
Material | Austenitic chrome-nickel steel |
Minimum tensile strength | 1,400N/mm² |
Surface quality | High |
Thread strength | High |
Thread friction torque | Low and constant |
Corrosion | Resistant |
Suitability | Low-strength materials |
Colour | Red |
What You'll Learn
Heli-Coil Tang Free Screw Lock is used in the aviation industry
Heli-Coil Tang Free Screw Lock is a type of helical insert, also known as a screw thread insert (STI). These inserts are made of coiled wire and are used to create, reinforce and repair threads for high-resistance fasteners. Heli-Coil Tang Free Screw Lock is specifically designed to be tang-free, meaning that no tang is required for installation and there is no need for tang break and tang removal operations. This results in reduced installation time and eliminates the risk of foreign object damage (FOD).
Heli-Coil Tang Free Screw Lock provides a captive screw lock, achieved by one or more polygonal-shaped threads clamping the flanks of the screwed-in screw. This type of insert offers a high-strength, wear-resistant thread with a constant and extremely low thread friction torque. It is made of austenitic chrome-nickel steel, which provides tensile strength and prevents seizing of screws under environmental influences.
The Heli-Coil Tang Free Screw Lock is commonly used in the aviation industry due to its lightweight construction and high strength. It combines minimum space requirements with high load capacity, making it suitable for use with high-strength screws in low shear strength materials. This results in reduced material usage, installation space and weight, which are important considerations in aircraft design.
The Heli-Coil Tang Free Screw Lock is used in a variety of applications within the aviation industry, including the build of cabins, propulsion systems, and structures for civil and military aircraft. It meets the current technical standards for both metric and imperial sizes. The Heli-Coil Tang Free Screw Lock is also used in the space sector, further demonstrating its versatility and reliability.
Overall, the Heli-Coil Tang Free Screw Lock is a valuable component in the aviation industry, providing a high-strength, lightweight and efficient solution for screw thread applications.
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它提供高螺纹强度
The Heli-Coil Tang Free Screw Lock provides high thread strength. This is due to the elastic properties of the coil thread insert, which distributes load and tension uniformly, resulting in a higher-quality screw joint compared to a screw joint without Heli-Coil. The Heli-Coil Tang Free Screw Lock also has a clamping area that serves as a captive screw lock. The screw lock is achieved by one or more polygonal turns that have a clamping effect on the flanks of the installed screw. This results in a high-friction locking capacity and a captive screw lock, ensuring that the screw does not loosen under vibration or impact.
The Heli-Coil Tang Free Screw Lock is particularly suited for low-strength materials and can be used with screws of higher property classes (8.8 and higher). It is available in both inch and metric series and has been successfully applied in aviation, electronics, industrial, automotive, and military fields.
The Heli-Coil Tang Free Screw Lock provides permanent, wear-resistant screw threads that eliminate the need for tang break-off and retrieval. With no loose tangs left behind, it is an ideal solution when foreign object debris (FOD) cannot be present in critical applications. The Heli-Coil Tang Free Screw Lock can be easily adjusted or removed after installation and does not require staking, locking, swaging, keying, or interference fit.
The Heli-Coil Tang Free Screw Lock automatically adjusts to any expansion or contraction of the parent material and anchors permanently in place against the tapped hole. It positively secures threaded members against vibration or shock loosening and provides a positive self-locking torque, complying with international standards such as NSAM8846 and ISO 2320.
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它耐磨、耐腐蚀、耐高温
HELICOIL® Tangfree Screwlock thread inserts are known for their wear, corrosion, and temperature resistance. This type of insert is designed without a tang, eliminating the need for tang break or removal during installation. It is also distinguished by its red colour, which makes it easily identifiable even after installation.
The insert's wear resistance is attributed to the high surface quality of the rolled internal thread made of austenitic chrome-nickel steel. This material ensures a high-strength thread that can withstand abrasion and frequent use without showing signs of internal thread wear. The insert's corrosion resistance is due to the same material, as chrome-nickel steel is known for its ability to resist oxidation and rust.
Temperature resistance is another key feature of the HELICOIL® Tangfree Screwlock thread insert. The chrome-nickel steel used in its construction has a high melting point, allowing it to maintain its structural integrity even at elevated temperatures. This makes the insert suitable for use in applications where temperature fluctuations or heat may be a factor.
The insert's resilience against wear, corrosion, and temperature contributes to its overall durability and longevity. It ensures that the insert can withstand various environmental factors and mechanical stresses without compromising its performance or integrity. This makes the HELICOIL® Tangfree Screwlock thread insert a reliable choice for creating strong and long-lasting screw joints.
In addition to its resistance properties, the HELICOIL® Tangfree Screwlock thread insert offers other advantages such as high thread strength, a tight fit, and cost savings. It is designed to create load-bearing joints and distribute load and tension uniformly, resulting in higher-quality screw joints compared to those without HELICOIL®.
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它是一种省钱的方法
HeliCoil Tang Free Screw Lock是一种节省成本的方法。与其他锁定机制不同,它消除了锁线、锁母、锁垫圈、化学化合物、塑料填料/补丁和其他锁定机制,从而节省了空间、重量和金钱。螺栓插入式螺纹紧固件提供了一种永久、耐磨损的螺纹,消除了断裂和取回螺母尾端的需要。螺栓Tang Free Screw Lock不需要额外的锁定,可以自动调整材料的膨胀和收缩,并能牢牢固定在钻孔中。
螺栓Tang Free Screw Lock的优势在于其高强度螺纹、螺栓锁定、耐磨损、耐腐蚀性和耐高温性。这种紧固件的密合度更紧,提高了质量和价值,并且不需要断开螺栓尾端,从而节省了成本。螺栓Tang Free Screw Lock非常适合低强度材料,并且由于其红色著色,在安装后很容易辨认。螺栓Tang Free Screw Lock符合国际标准和航空标准,适用于高强度等级的螺栓。
螺栓Tang Free Screw Lock的安装不需要螺栓尾端,因此消除了断开和取出螺栓尾端的操作,从而缩短了安装时间。与螺栓Plus相比,螺栓Tang Free Screw Lock在包括断开和取出螺栓尾端的时间在内的总周期时间方面具有明显优势。螺栓Tang Free Screw Lock还可以消除外来物损风险,因为没有螺栓尾端,就不会留下任何松动的部件。
螺栓Tang Free Screw Lock由奥氏体镍铬合金钢制成,具有极高的表面质量和强度。与加工螺纹相比,其表面粗糙度降低了90%,并且具有较低且不分散的摩擦系数。螺栓Tang Free Screw Lock能够更好地承受高温或重复应力,并能防止螺栓在环境影响下卡死。螺栓Tang Free Screw Lock还符合轻量化结构的趋势,因为它结合了最小空间要求和高强度。
螺栓Tang Free Screw Lock在全球各种应用中广泛使用,特别是在航空航天领域。螺栓Tang Free Screw Lock符合航空航天技术标准,并被用于建造机舱、推进系统、民用和军用飞机结构以及太空领域。螺栓Tang Free Screw Lock与轻合金结合使用,可以减少零件重量,因此对螺栓Tang Free Screw Lock系统的需求不断增加。螺栓Tang Free Screw Lock产品是航空舱、推进系统、结构件和太空领域的重要组件。
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它适用于低强度材料
Heli-Coil Tang-Free Screw Lock是螺纹螺套,适用于低强度材料。螺纹螺套的优点是可以将负载和应力均匀分布,从而形成比没有螺纹螺套的更优质的螺纹连接。螺纹螺套特别适用于铝或铝镁合金等低剪切强度材料。使用螺纹螺套时,可以在铝材料中形成耐热、耐磨和高强度的精密螺纹,即使频繁使用,螺纹也不会产生内部磨损。
螺纹螺套具有很大的承载能力和精确度。螺纹螺套的弹性特性使其能够均匀地分布负载和张力,从而形成高质量的螺纹连接。螺纹螺套特别适用于需要高强度连接的轻型结构。螺纹螺套将空间要求降到最低,同时具有较高的负载容量,因此可以使用高强度螺丝与低剪切强度材料连接。与使用其他连接方法相比,螺纹螺套可以减少连接点和螺丝尺寸,从而减少材料、安装空间和重量。
螺纹螺套的另一个优点是耐磨性。螺纹螺套的高表面质量和由奥氏体铬镍钢制成的内螺纹的滚压工艺,确保了高强度的螺纹。此外,该螺纹具有恒定的极低的螺纹摩擦力矩。螺纹螺套可以减少螺纹摩擦及其离散范围。这意味着在扭矩控制的螺栓紧固应用中,可以更精确地调整螺栓预紧力,从而更有效地利用螺栓的屈服点。
螺纹螺套不需要额外的锁定装置,如分片销、铁丝或垫圈。螺纹螺套的螺纹锁设计具有较高的摩擦锁定能力,从而形成密闭的螺栓锁。螺纹螺套适用于航空、电子、工业、汽车和军事等多种领域。
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Frequently asked questions
A Helicoil Tang Free Screw Lock is a type of helical insert, also known as a screw thread insert (STI) or helicoil insert, used to repair stripped threading and reinforce bolted connections. It is inserted into a pre-drilled hole and as the bolt is screwed in, the coil expands, creating a tight seal.
The coils are wider than the tapped hole. When the bolt is screwed in, the coil expands, creating a tight, firm seal against the threads. This results in a permanent bond that is stronger than the original bolt fastening.
The Tang-Free Screw Lock eliminates the need for tang break-off and retrieval, saving time and money. It also removes the risk of loose metal getting into the machinery.
Helicoil Tang Free Screw Locks are used in various applications, including manufacturing, electrical engineering, aerospace, medical devices, and telecommunications. They are commonly used in the automotive industry for engine cylinder head repairs and gear housings.