N’chifukwa chiyani ma rivets osawona amaswa mandrel osati pamalo osweka a chokokera?

1. Mphamvu yokoka ya mandrel yokha si yokhazikika, mphamvu yokoka ili pafupi kwambiri ndi mphamvu yokoka ya mandrel yokha, kapena chithandizo cha kutentha sichinachitike, ndipo mandrel ndi yofooka.

2. Mandrel yawonongeka isanayambe kugwedezeka.

https://www.yukerivet.com/news/the-mandrel-of-the-rivet-has-been-completely-pulled-out-is-it-qualified-to-leave-a-penetrating-hole-in-the-rivet-body-after-riveting/