3. The nail head falls off: After riveting, the mandrel head cannot be wrapped and falls off from the rivet body.
The reasons for the falling off of the nail head are: the diameter of the mandrel cap is too large; the rivet body is short and does not match the riveting thickness.
4. Crack of riveting body: After pulling riveting, the riveting body has a longitudinal crack or is completely cracked.
The reasons for the cracking of the riveting body are: the hardness of the riveting body is too high or not heat treated after annealing; the diameter of the mandrel cap is too large; the content of harmful impurities in the riveting body material is too high, or there are interlayers.
Post time: Mar-02-2022