Joining: Riveting: Percing rivets
With punch riveting, the aluminium parts are joined using riveting elements from two sides. There is no need for the pre-drilled hole that is necessary with conventional riveting of the parts.
In addition to a suitable rivet geometry, the material-specific composition of the rivet element is decisively important for a high-quality riveted joint; the material used for the rivet depends on the parts being joined and determines the strength and corrison behaviour as well as the cuttability and formability during punching.
Although aluminium self-piercing rivets are available, they are usually replaced by steel riveting elements, which are covered with a special protective layer.