Abstract:
A honeycomb body has sheet-metal layers and sheet-metal foils to be joined with brazing powder. Each of the foils has at least one sliding structure enabling the adjacent layers to slide over one another. A honeycomb body, particularly a catalyst carrier body for an exhaust system of an internal combustion engine, includes at least partially structured sheet-metal layers wound and/or stacked to form passages for fluid flow. The sheet-metal layers are at least partially joined to one another by the brazing powder. The honeycomb body also has at least one sheet-metal foil with at least one sliding structure. A process for producing the honeycomb body guarantees sharply delineated brazed joints, even for brazing powder, which results in a greatly increased lifespan, particularly with regard to thermal and dynamic loads placed on the honeycomb body when used as a catalyst carrier body in an exhaust system of an internal combustion engine.
Abstract:
A method for producing multiple structured sheet metal foils includes the steps of A) reshaping the sheet metal foil to produce a primary structure having a first primary structure width; B) reshaping the sheet metal foil having the primary structure to produce a secondary structure; and C) reshaping the structured sheet metal foil to produce a second primary structure width being smaller than the first primary structure width. A method for producing a metal honeycomb body, a catalyst carrier body having multiple structured sheet metal foils for exhaust gas purification and a tool for producing multiple structured sheet metal foils, are also provided.