Process for the production of a honeycomb body of twisted sheet metal layers
AssigneeEmitec Gesellschaft fuer Emissionstechnologie
InventorLudwig Wieres
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Abstract
A honeycomb body has a plurality of at least partially structured sheet metal layers forming a plurality of passages through which a fluid can pass. The sheet metal is plastically deformed in a region of a mandrel passage whose cross-section is substantially determined by a mandrel of a winding device with which the honeycomb is formed. The free flow cross-section of the mandrel passage is closed at least in a portion of the passage along the flow direction by deforming the sheet metal with a deformation punch. The deformation punch has an end portion with a sharp-edged rim.
Claims5
A method of producing a honeycomb body, which comprises:
- providing a winding device with a mandrel;
- winding a plurality of at least partially structured sheet metal layers with the winding device to form a honeycomb body defining a plurality of passages through which a fluid can flow along a flow direction, and forming a mandrel passage having an opening in the honeycomb body with the mandrel of the winding device;
- and
- closing the opening of the mandrel passage by deforming the sheet metal layers in the region of the mandrel passage by applying a force along said flow direction.
Dependencies are inferred from the claim text.