How to Ensure that the Connectors Do Not Loosen During the Riveting Process?

1. Optimize the Pressure Riveting Process
   • Reasonably control pressure riveting parameters: During the pressure riveting process, parameters such as pressure, speed, and time need to be strictly controlled to ensure a firm bond between the connecting part and the base material.
   • Ensure concentricity and perpendicularity: After pressure riveting, the connecting part must remain perpendicular, and the thread must be concentric with the corresponding hole. Avoid loosening caused by the connecting part being riveted at an angle or off-center.
   • Avoid excessive deformation: During the pressure riveting process, excessive deformation of the connecting part and the base material should be avoided. Ensure that there are no obvious protrusions or depressions around the connecting part.
2. Adopt Anti-loosening Designs
   • Increase preload force: By designing to increase the thickness of the nut or its elastic structure, the nut generates a preload force when tightened, thereby increasing the frictional force.
   • Use anti-loosening washers: Add elastic anti-loosening washers between the nut and the workpiece to increase the frictional force and buffer vibrations.
   • Thread locking agent: Apply a thread locking agent at the thread. After it cures, it forms a tough sealing layer to prevent the nut from loosening.
   • Double nuts or self-locking nuts: Using double nuts or self-locking nuts (such as nylon insert nuts) can significantly improve the anti-loosening effect.
3. Materials and Surface Treatment
   • Select appropriate materials: Choose appropriate materials according to the usage environment, such as stainless steel or high-strength alloy steel, to improve corrosion resistance and strength.
   • Surface treatment: Carry out appropriate surface treatments (such as galvanizing or nickel plating) on the connecting parts and the base material to improve wear resistance and corrosion resistance.
4. Quality Inspection and Maintenance
   • Regular inspection: After the pressure riveting is completed, detect the firmness of the connecting parts through methods such as tensile testing and torque testing.
   • Regular maintenance: During the usage process, regularly check the tightening status of the connecting parts, and promptly detect and address any loosening issues.
   • Recording and traceability: Establish a complete pressure riveting recording system to record the data and inspection results of each production, so as to trace the source of quality problems.
5. Structural Optimization
   • Design dedicated anti-loosening structures: For example, use pressure riveting nuts with built-in snap ring structures or self-locking threads, and utilize mechanical principles to achieve self-locking.
   • Vibration isolation: When allowed by the design, reduce the vibration transmitted to the connecting parts by adding rubber gaskets or other vibration isolation materials.
6. Installation Precautions
   • Use the correct tools: During the installation process, use appropriate tools (such as torque wrenches) and tighten according to the specified torque to avoid over-tightening or under-tightening the nuts.
   • Avoid improper installation: Ensure that the installation process complies with the process requirements to avoid loosening caused by improper operation.