Abstract:
An embodiment provides a method of constructing a cellular structure having nodes therein comprising: providing at least one truss layer comprised of at least one truss unit, at least one of the truss units being comprised of truss members; providing at least one panel in mechanical communication with the at least one truss unit of the at least one truss layer, the mechanical communication defines contact regions wherein the at least one truss unit is coupled to the at least one panel; the nodes being defined as intersections existing among any of the truss members and the nodes also being defined by the contact regions; providing at least one node pin, the at least one node pin spanning between two desired the nodes; and diffusion bonding at least one of the truss layer to the at least one panel. The bonding includes: applying heat, and applying force that results in the truss layer and the panel that are being bonded to be pressed together, the node pins provide support for the structure so as to concentrate or transmit the applied force onto the contact regions.
Abstract:
Verfahren zum Herstellen eines Wabenkörpers mit einer Wabenstruktur, einem Mantelrohr und einem Flanschstück für einen Messfühler an dem Mantelrohr, umfassend die folgenden Schritte: Herstellen des Mantelrohrs aus einem Metallblech; Einbringen eines von einem Lochrand berandeten Lochs an einer vorgegebenen Stelle in das Metallblech; Anbringen des Flanschstückes an dem Lochrand im Mantelrohr; Einbringen der Wabenstruktur in das Mantelrohr; und Durchführen eines gemeinsamen Wärmebehandlungsprozesses zur Verbindung des Mantelrohres mit der Wabenstruktur und dem Flanschstück. Auf vorteilhafte Weise kann so die Verbindung eines Flanschstücks mit dem Mantelrohr in einen bereits bestehenden Wärmebehandlungsprozess intgriert werden, was zu einer einfachen und schnellen Herstellung und damit zu Kosteneinsparungen führt.
Abstract:
Verfahren zum Beleimen und Beloten einer Wabenstruktur umfassend mindestens eine zumindest teilweise strukturierte Folie mit einem Pitch und einer Wellhöhe umfassend folgende Schritte: Auswahl eines mittleren Lotdurchmessers eines pulverförmigen Lots, der betragsmäßig kleiner als 15% der Wellhöhe ist; Bestimmen einer minimalen Leimstreifenbreite nach der Gleichung (I); Beleimen wenigstens der zumindest teilweise strukturierten Folie innerhalb der Leimstreifenbreite auf mindestens einem Teil von durch die Wellung gebildeten Wellenbergen; Beloten der Wabenstruktur. Weiter wird eine entsprechende Wabenstruktur vorgeschlagen, die eine ausreichende fügetechnische Verbindung auch bei Verwendung einer solchen Wabenstruktur im Abgassystem von Automobilen gewährleistet.
Abstract:
Verfahren und Vorrichtung zum Beloten einer metallischen Struktur (23), insbesondere eines Wabenkörpers (1), wobei die metallische Struktur (23) mit einem pulverförmigen Lotmaterial (6) so in Kontakt gebracht wird, dass das Lotmaterial (6) zumindest teilweise haften bleibt, wobei die metallische Struktur (23) und/oder das Lotmaterial (6) zumindest während des Kontaktes in Vibration versetzt wird/werden.
Abstract:
An abradable turbine seal having a novel honeycomb cellular structure (30) fabricated from metal foils or sheets (32) showing good manufacturability, optimised brazeability and especially good structural integrity and oxidation resistance after brazing to metal support structures (44). MCrA1Y (M=Ni, Fe, Co or combinations thereof) foil and sheet metals are particularly suitable to produce such a structure.
Abstract:
The invention relates to the joining of a support matrix of a honeycomb (4), especially a catalyst support body, on at least one end face; said support matrix consisting of at least partially structured layered or wound metal sheets and being situated in a cover tube (7). According to the invention, the support matrix is joined using a surface inductor (13) comprising induction coils (12). The induction coils (12), positioned accordingly, at least partially heat the end face (11) of the honeycomb (4), in such a way as to produce joints between the metal sheets, at least in points (14), especially in patches (15). Joint patches of this type can preferably be produced with variations in terms of their size on the end face. The invention provides a surface inductor (13) for this purpose. The areas in which said surface inductor is effective (14, 15) can advantageously be modified, hereby modifying the production of the joining points (14) and/or patches (15). The invention is particularly suitable for joining using bonding techniques such as soldering or sintering and can be advantageously used in a continuous process for producing catalyst support bodies.
Abstract:
A honeycomb body includes a housing and a honeycomb structure with a plurality of channels. The honeycomb structure is formed by at least one at least partially structured metallic layer which forms connecting points that fix the honeycomb structure in place. A cross section of the honeycomb structure has radial zones with the connecting points. At least 1% and no more than 20% of inner contact points of the at least one at least partially structured metallic layer in the cross section form a connecting point in at least one zone. The connecting points have lengths in a structure direction being different in at least two radial zones.