Reflow bonding process

A method (21) for connection of two workpiece portions (8, 10) in a contact region (13, 15) proposed in which one of the workpiece portions (8, 10) by an energy input (12) adjacent to the contact area (13, 15 ) zonally is melted and the mechanical connection between the two workpiece portions (8, 10) at least partially by a form-fitting connection (14).