5 Solutions for Loose Plugs
Customers often ask questions about how to prevent the loosening of the screw plug. By consulting the information, we have collected some solutions to the loosening of the screw plug.
1. Friction and anti-loosening
This is the most widely used anti-loosening method. This method generates a positive pressure between the thread pairs that is not isolated with external force, so as to generate a friction force that can restrain the relative rotation of the thread pair. This positive pressure can be achieved by pressing the thread pair axially or in both directions at the same time. Such as elastic washers, double nuts, self-locking nuts and nylon insert locking nuts. This anti-loosening method is more convenient for the disassembly of the nut, but in the environment of shock, vibration and variable load, the preload force of the bolt will drop due to relaxation at the beginning. As the number of vibrations increases, the lost preload force becomes dull If it increases, it will eventually lead to the loosening of the nut and the failure of the threaded connection.
2. Mechanical anti-loosening
Use split pins, stop gaskets and string wire ropes, etc. The mechanical anti-loosening method is more reliable, and the mechanical anti-loosening method should be used for important connections.
3. Permanent anti-loose
Spot welding, riveting, bonding, etc. In this method, threaded fasteners are mostly crushed during disassembly and cannot be reused.
4. Riveting and anti-loosening
After tightening, punching, welding, bonding and other methods are used, so that the threaded pair loses the characteristics of the movable pair and the connection becomes an inseparable connection. The disadvantage of this method is that the bolt can only be used once, and the disassembly is very difficult, and the bolt pair must be crushed to be disassembled.
5. Structural anti-loosening
The structure anti-loosening does not rely on the manpower outside the circle, but only on its own structure. The structural anti-loosening method is the Down's thread anti-loosening method, which is also the best anti-loosening method that has begun to advance and has achieved the best results, but it is not known to most people.
