Abstract: A method for generating openings in a metal foil includes at least the following steps: a) providing a planar metal foil, b) generating bends defining extrema in the metal foil, and c) generating at least one opening in the vicinity of the bends through the use of a cutting production process forming chips including simultaneously cutting a plurality of adjacent extrema of the metal foil by using grinding tools.

Abstract: A method for producing a structured sheet-metal strip includes feeding a smooth sheet-metal strip to a shaping apparatus along a guiding direction. A primary structure is produced in the smooth sheet-metal strip through the use of the shaping apparatus, during which a number of separate shaping tools act upon the sheet-metal strip in a manner that is substantially perpendicular to the guiding direction. An apparatus for producing a structured sheet-metal strip can produce the structured sheet-metal strips with a particularly low ratio of corrugation length to corrugation height. Such structured sheet-metal strips are used, in particular, for producing purification components in mobile exhaust gas systems.

Abstract: A sheet-metal layer includes anti-diffusion structures made of a high-temperature-corrosion-resistant steel having a longitudinal direction, upper and lower surfaces, a thickness of 0.015 to 0.1 mm and discontinuous microstructures extending approximately in the longitudinal direction. The microstructures have a structure height (0.02 to 0.1 mm), a structure length (2 to 10 mm), a structure width (0.2 to 1 mm), a longitudinal spacing (greater than 2 mm), formed by interruptions, from the nearest microstructure aligned approximately in the longitudinal direction and a lateral distance (1 to 10 mm) from the nearest laterally adjacent microstructure. Some of the microstructures project out of the sheet-metal layer toward the upper surface and some toward the lower surface.

Abstract: A method for producing a honeycomb body having a honeycomb structure disposed in a housing, includes at least forming a honeycomb structure, inserting the honeycomb structure into a housing, carrying out a heat treatment operation on the honeycomb structure having the housing, contacting outer regions with a molding, at least during the inserting step or the heat treatment step, and reproducing a desired outer contour of the housing with contact faces of the molding. A molding and an exhaust gas treatment unit produced with a thin housing in a dimensionally accurate manner, are also provided.

Abstract: A method for brazing a metallic honeycomb body (1) for exhaust gas treatment, includes at least: a) pretreatment of a honeycomb body (1) at a temperature above 400° C.; b) cooling the honeycomb body (1); c) brazing the honeycomb body (1) at a temperature in a range of from 1050° C. to 1100° C. under atmospheric pressure; and d) cooling the honeycomb body (1). A suitable apparatus for carrying out the method is also provided.

Abstract: A hollow body for capturing particles includes at least one at least partially permeable wall extending between two at least partially oppositely disposed openings and along a first longitudinal direction. The hollow body has a primary cross-sectional shape defining a first cross-sectional area. At least one of the openings defines a second cross-sectional area. The second cross-sectional area is greater than the first cross-sectional area. An exhaust-gas treatment device having an exhaust line and a motor vehicle having an exhaust-gas treatment device are also provided.

Abstract: A sheet-metal layer includes anti-diffusion structures made of a high-temperature-corrosion-resistant steel having a longitudinal direction, upper and lower surfaces, a thickness of 0.015 to 0.1 mm and discontinuous microstructures extending approximately in the longitudinal direction. The microstructures have a structure height (0.02 to 0.1 mm), a structure length (2 to 10 mm), a structure width (0.2 to 1 mm), a longitudinal spacing (greater than 2 mm), formed by interruptions, from the nearest microstructure aligned approximately in the longitudinal direction and a lateral distance (1 to 10 mm) from the nearest laterally adjacent microstructure. Some of the microstructures project out of the sheet-metal layer toward the upper surface and some toward the lower surface.

Abstract: A honeycomb body for an exhaust-gas purification system may be used, for example, as a carrier body for catalytically acting coatings or as a filter, absorber or mixer in the exhaust system of an internal combustion engine. The honeycomb body has channels, an axial main direction, a planar front surface, a planar end surface and a circumferential surface disposed parallel to the axial main direction. The front surface and/or the end surface are disposed obliquely with respect to the axial main direction. Such a honeycomb body is advantageous, in particular, for applying reducing agent to the oblique end or front surface. A method for producing a honeycomb body, an exhaust line section and a motor vehicle are also provided.

Abstract: A method for brazing a metallic honeycomb body (1) for exhaust gas treatment, includes at least: a) pretreatment of a honeycomb body (1) at a temperature above 400° C.; b) cooling the honeycomb body (1); c) brazing the honeycomb body (1) at a temperature in a range of from 1050° C. to 1100° C. under atmospheric pressure; and d) cooling the honeycomb body (1). A suitable apparatus for carrying out the method is also provided.

Abstract: A nonwoven fabric for exhaust-gas treatment includes a multiplicity of metallic filaments having at least two types of different contours of the metallic filaments. An exhaust-gas purification device includes a channel structure through which exhaust gas can at least partially flow. The channel structure is made at least partially with such a nonwoven fabric. A method for producing a nonwoven fabric for exhaust-gas treatment is also provided.

Abstract: An exhaust-gas treatment unit includes at least one housing and a honeycomb structure having channels running between end faces of the honeycomb structure and being formed by at least partially structured metal foils having a material thickness of at most 50 ?m. At least part of the metal foils is constructed with a fold of a predefined width at least in the region of an end face, and the metal foil is welded to itself at a weld seam in the region of this fold. A method for producing such an exhaust-gas treatment unit using a suitable welding process is also provided.

Abstract: A honeycomb body includes at least one housing and a honeycomb structure for a waste-gas purification system having at least one sheet metal material. The sheet metal material has elevations in at least one section and an edge contour enclosing the elevations. A portion of the area of the elevations in the at least one section is at least 80%. A particle separator, a catalyst carrier body and a motor vehicle having the honeycomb body are also provided.

Abstract: A device and a method for applying brazing material to an at least partially structured metal foil include a) providing at least one flat metal foil, b) shaping the at least one metal foil to produce a structure, and c) applying brazing material to the at least one metal foil. Steps b) and c) are carried out discontinuously and at least partially together. The device and method are preferably used in the production of metallic honeycomb bodies for the treatment of exhaust gases in vehicles.

Abstract: A self-supporting mount for exhaust gas purification modules includes at least two retaining plates. The exhaust gas purification modules each have a cross sectional shape and at least one bead projecting beyond the main cross sectional shape and having a thickness. At least two of the exhaust gas purification modules pass at least partially through at least one of the retaining plates and are each fixed between the at least two retaining plates through the use of the bead. An exhaust system for a motor vehicle having at least one self-supporting mount, is also provided.

Abstract: A filter layer includes at least partially gas-permeable material having a plurality of segments joined to one another in such a way that the filter layer has non-parallel edges. Inexpensive manufacturing methods for such a filter layer, conical honeycomb bodies having the filter layer and particle-filtering exhaust gas purification apparatuses for motor vehicles, are also provided.

Abstract: A process for producing a structure in a smooth sheet-metal strip includes multiple process steps. In a first step, a first section of a smooth sheet-metal strip is fed to a first tool and a second section of the sheet-metal strip is fed to a second tool in a direction of advance. Then the sheet-metal strip is stopped. A sheet-metal machining of the first section of the sheet-metal strip is carried out using the first tool. A sheet-metal machining of the second section of the sheet-metal strip is carried out using the second tool, with the first feeding step being carried out simultaneously. An apparatus is provided for producing a sheet-metal strip of such a complex structure, which produces the structure with a very high degree of accuracy even when the materials properties differ.

Abstract: A honeycomb body for an exhaust treatment unit has at least one honeycomb structure and a least one housing, which at least partially surrounds the at least one honeycomb structure. At least one region between the honeycomb structure and the housing is formed with a brazed joint and at least two separate measures delimit the brazed joint. Furthermore, a method for producing a corresponding honeycomb is also proposed.

Abstract: A honeycomb body includes two opposite end sides, at least one housing and at least one metallic layer forming channels. At least one of the end sides has at least one brazed zone forming a belt-shaped, brazing material-free zone adjacent the housing. A method for producing the honeycomb body, an exhaust-gas treatment component for an internal combustion engine and a motor vehicle having the honeycomb body, are also provided.

Abstract: A process for producing a structure in a smooth sheet-metal strip includes multiple process steps. In a first step, a first section of a smooth sheet-metal strip is fed to a first tool and a second section of the sheet-metal strip is fed to a second tool in a direction of advance. Then the sheet-metal strip is stopped. A sheet-metal machining of the first section of the sheet-metal strip is carried out using the first tool. A sheet-metal machining of the second section of the sheet-metal strip is carried out using the second tool, with the first feeding step being carried out simultaneously. An apparatus is provided for producing a sheet-metal strip of such a complex structure, which produces the structure with a very high degree of accuracy even when the materials properties differ.

Abstract: A method for generating openings in a metal foil includes at least the following steps: a) providing a planar metal foil, b) generating at least one bend in the metal foil, and c) generating at least one opening in the region of the at least one bend through the use of a cutting production process. Grinding tools are preferably used. A method for producing a honeycomb body, an exhaust gas treatment unit for mobile internal combustion engines having a honeycomb body and being produced by the method, as well as a motor vehicle, are also described.