Study on the quantitative relationship between riveting pressure and riveting quality of blind rivets
Publish Time: 2024-11-05
As a widely used riveting element, there is a close quantitative relationship between the riveting pressure and the riveting quality of blind rivets, which profoundly affects the effect of riveting operations.
In the riveting process, riveting pressure is a key parameter. When the pressure is insufficient, the blind rivets cannot be fully deformed, resulting in insufficient clamping force between the rivet and the riveted material. This may significantly reduce the tensile strength and shear strength of the riveted joint, and it is easy to loosen or separate when subjected to external forces. For example, in the riveting of automobile body parts, if the riveting pressure of blind rivets is insufficient, the vibration during the driving of the vehicle may loosen the riveted parts and affect the structural integrity of the vehicle.
On the contrary, if the riveting pressure is too high, a series of problems will occur. On the one hand, it may cause the blind rivets to deform excessively, or even damage the riveted material, reducing the original performance of the material. On the other hand, excessive pressure may cause the blind rivets core rod to break inside the rivet, affecting the stability of the riveting quality. Moreover, excessive pressure will increase the load and energy consumption of the equipment and reduce the riveting efficiency.
From a quantitative point of view, different specifications of blind rivets correspond to different optimal riveting pressure ranges. This range is usually determined through a large number of experiments and practical experience. For example, for blind rivets with smaller diameters and shorter lengths, the required riveting pressure is relatively small; while for blind rivets with larger diameters and longer sizes, higher pressure is required to ensure a good riveting effect. At the same time, the material and thickness of the riveted material also have an impact on the riveting pressure. Harder or thicker materials may require greater pressure to achieve reliable riveting. By accurately measuring and controlling the riveting pressure, a quantitative relationship model of parameters related to riveting quality (such as riveting strength, sealing, etc.) is established, which is of vital importance for optimizing the riveting process of blind rivets and improving the riveting quality.
