Lubrication in high strength bolt connections: the key to ensuring connection performance

Author: admin / 2023-11-17

In the bolt connection of high strength bolt, lubrication is a key link. It not only reduces friction and preload loss, but also improves the reliability and service life of the connection. This article will delve into the role of lubrication in high strength bolt connections and how to properly select and apply lubricants.

reduce friction

In high strength bolt connections, since the contact area between threads is relatively small, friction can lead to loss of bolt preload and loosening of the connection. The use of lubricants can effectively reduce the friction between threads, allowing the bolts to better transmit the pre-tightening force and improve the tightening effect of the connection. At the same time, reducing friction can also reduce wear on bolts and nuts and extend the service life of connections.

Prevent thread jamming

In high strength bolt connections, due to the large pretightening force, the threads are prone to jamming, leading to connection failure. Appropriate lubricant can form a thin film on the surface of the thread to prevent the thread from getting stuck. This film reduces friction between threads, making the tightening and loosening process smoother and preventing thread damage and loose connections.

Improve connection reliability

The use of lubricants can improve the reliability of high strength bolt connections. By reducing friction and preventing thread seizing, lubricants ensure that the preload force of the connection is effectively transmitted and the stability of the connection is maintained. This is very important for connections that bear important loads and harsh working environments, and can avoid safety hazards such as loosening and breakage of connections.

Lubrication plays a key role in high strength bolt connections. It can reduce friction, prevent threads from getting stuck, and improve the reliability and service life of connections. The correct selection and application of lubricants can ensure the stability and safety of bolted connections, which is of great significance for connections in various engineering fields.

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