Joining process for at least two components involves first plastic deformation step and second punching step forming undercut

摘要

The joining process for two components (5, 6) consists of plastic deformation by a fluid (4) under pressure, followed by using a joining punch (1) to deform one already deformed region in the opposite direction, forcing material into a cavity (7) in a shaped part (2) of the tool, forming an undercut between the components.