Abstract: In the method according to the invention for connecting a sheet metal component (3) to a component (5) consisting of cast metal, the sheet metal component (3) and the component (5) are welded to one another by means of a pulse-welding method. In particular, a sheet metal pipe (3) can thereby be welded to the port (12) of a housing (13) consisting of cast metal. This advantage may be utilized for an exhaust system with an exhaust manifold (3) and an exhaust assembly, such as a turbocharger (5).

Abstract: The invention concerns a method and apparatus for production of a hollow section (1) in which a coiled pre-shape of the hollow section (1) is deep drawn from a sheet part, which is pre-bent after a trimming process and coiled into the final shape of hollow section (1). The edges (45) of hollow section (1) lying in the peripheral direction are then joined together in the contact region. In order to improve the joining capability of hollow section (1) to other components in simple fashion, it is proposed that before the coiling process at least one flat site (35) for joining to another component be embossed before the coiling process in a pre-bent region of the hollow section (1).

Abstract: In the method according to the invention for connecting a sheet metal component (3) to a component (5) consisting of cast metal, the sheet metal component (3) and the component (5) are welded to one another by means of a pulse-welding method. In particular, a sheet metal pipe (3) can thereby be welded to the port (12) of a housing (13) consisting of cast metal. This advantage may be utilized for an exhaust system with an exhaust manifold (3) and an exhaust assembly, such as a turbocharger (5).

Abstract: An exhaust manifold for connecting an exhaust pipe with at least one cylinder of an internal combustion engine, and a shell manifold as at least one component of the exhaust manifold. The at least one shell manifold (3, 9, 17, 31, 38) is comprised of at least two shape shells (4, 14, 10, 20, 18, 28, 32, 34, 39). The shape shells are joined to each other by mechanical interlocking. The shell manifold exhibits at least one inlet (5, 11, 19, 35, 46). The shell manifold (3, 9, 17, 31, 38) is so designed, that the at least one inlet (5, 11, 19, 35, 46) communicates with the at least one cylinder.

Abstract: The invention concerns a method and apparatus for production of a hollow section (1) in which a coiled pre-shape of the hollow section (1) is deep drawn from a sheet part, which is pre-bent after a trimming process and coiled into the final shape of hollow section (1). The edges (45) of hollow section (1) lying in the peripheral direction are then joined together in the contact region. In order to improve the joining capability of hollow section (1) to other components in simple fashion, it is proposed that before the coiling process at least one flat site (35) for joining to another component be embossed before the coiling process in a pre-bent region of the hollow section (1).