The blind rivet we see in our daily life is a commonly used fastener product. It is mainly used in computer components, mechanical products, construction equipment and other products. Cracks will occur. Let me explain to you why:
1. Because the core pulling force of the blind rivet is unstable or the heat treatment is not handled properly, the core will become brittle and the core will be broken.
2. Perhaps the core of the blind rivet has been damaged before the riveting, so it is required to do a qualified inspection of the product before use.
3. Improper use of the rivet gun will also cause the blind rivet to crack. The claw pieces of the rivet gun are not adjusted properly and are not on the same plane, which will have a shearing effect on the mandrel.
4. The air pressure of the riveting gun is insufficient, and when the claws are worn, the riveting gun will cause certain damage to the mandrel at the beginning, and when it is pulled again, cracks will occur from the damaged place.
After riveting, the burr of the fractured opening of the mandrel penetrates the outside of the riveting body hole; probably the inner hole of the riveting body brings out the tip and protrudes, forming a burr for scraping the hand.
The reasons for the burrs are: the diameter of the mandrel cap is too small; the material of the rivet body is too soft; the diameter of the workpiece drilling is too large; the size of the nozzle of the rivet gun is too large; the distance between the mandrel fracture and the mandrel head is too large, exceeding the Realistic riveting thickness.
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