Method for prodn of curved exhaust pipe section used in vehicle

摘要

The double layer sheet metal section is prepared for the tube shaped element. The longitudinal edges of the sheet metal section and the longitudinal edges of a gusset for a multichannel outlet are welded together. The transverse edges are also welded. An opening is formed in the end region to accommodate a pressure medium and a hydraulic forming tool is introduced into the prepared sheet metal section to allow the appropriate inner curved shape to be formed.