1. Pull-through: The mandrel of the rivet is pulled out from the rivet body as a whole, and the fracture of the mandrel is not broken, leaving a through hole in the rivet body after riveting.
2. Burr: After riveting, the burr of the fracture of the mandrel penetrates outside the rivet body hole; or the rivet body hole brings out the tip and protrudes, forming a burr that scrapes the hand.
https://www.yukerivet.com/news/how-to-remove-burrs-on-the-surface-of-blind-rivets/
Post time: Jul-21-2022