Borgwarner Inc.

Daimler Ag

Olav Reinhardt

Holger Nuhn

Wilfried Bien

Michael Halves

Dirk Riewert

Alfred Riggers

Thomas Huelsberg

Thorsten Sternal

Ralf Puenjer

Hildwin Kuzi

Uwe Klüssmann

Jan Peter Elfeldt

Thomas Hülsberg

Bernhard Müller

Ralf Pünjer

Thorsten Sterna

In the method according to the invention for connecting a sheet metal component () to a component () consisting of cast metal, the sheet metal component () and the component () are welded to one another by means of a pulse-welding method. In particular, a sheet metal pipe () can thereby be welded to the port () of a housing () consisting of cast metal. This advantage may be utilized for an exhaust system with an exhaust manifold () and an exhaust assembly, such as a turbocharger ().

Method for connecting a sheet metal component, such as a pipe, to a cast metal component, such as a housing port, in particular for an exhaust system

The invention concerns a method and apparatus for production of a hollow section () in which a coiled pre-shape of the hollow section () is deep drawn from a sheet part, which is pre-bent after a trimming process and coiled into the final shape of hollow section (). The edges () of hollow section () lying in the peripheral direction are then joined together in the contact region. In order to improve the joining capability of hollow section () to other components in simple fashion, it is proposed that before the coiling process at least one flat site () for joining to another component be embossed before the coiling process in a pre-bent region of the hollow section ().

Method and device for production of a hollow section

Growing community of inventors

Hamburg, Germany

Olav Reinhardt