Abstract:
A double skin composite panel comprising two steel facing plates (2, 3) of thickness between 2 mm and 32 mm joined together by cross-members (1). Each cross-member (1) is aligned generally normal to the facing plates and is spaced from its neighbouring members by a distance of between 10 and 80 times the thickness of the centres of the facing plates (2, 3), the separation between the facing plates being between 30 mm and 800 mm. A filler material, e.g. concrete, is introduced into the spacing between the facing plates.
Abstract:
In a process for soldering partial areas (5) of a metallic structure (2, 4), a sticky material is applied on the partial areas (5) and then soldering powder is applied thereon, which adheres to the sticky material. The sticky material retains its stickiness up to temperatures of at least 180°, preferably above 200 °C, so that when the structure (2, 4) is thermally treated, in particular thermally degreased, no soldering powder is lost. This process is particularly suitable to produce catalyst carrier bodies (1) for catalytic converters of internal combustion engines, since during its production two different connections have to be achieved, i.e. binding the honeycombed body itself (4) to a tubular casing (2) and assembling individual sheet metal layers of the honeycombed structure (4). Different soldering techniques can be successively applied with no loss of the initially applied soldering powder.
Abstract:
This invention aims at manufacturing a metal support capable of activating a catalyst in a short period of time, and, especially, a method of combining an insulating film-carrying heat resisting alloy having an insulating film consisting mainly of alumina with a heat resisting alloy by arranging a forcibly reducing metal capable of thermodynamically reducing alumina and a solder-laminated bond so that the forcibly reducing metal is in contact with the insulating film-carrying heat resisting alloy, and soldering these metals to each other by heating the same in a non-oxidizing atmosphere. Consequently, only the portions that are to form conductive passages in a honeycomb structure can be combined, and heat resisting metals having insulating oxide films on the surfaces thereof firmly so that they have conductivity. A preheated type metal support capable of being heated at a limited surface layer portion on its exhaust gas inlet side and having excellent cleaning performance can be provided by using this soldering method.
Abstract:
A method and an apparatus for collecting a powdered material after a print job in powder bed fusion additive manufacturing may involve a build platform supporting a powder bed capable of tilting, inverting, and shaking to separate the powder bed substantially from the build platform in a hopper. The powdered material may be collected in a hopper for reuse in later print jobs. The powder collecting process may be automated to increase efficiency of powder bed fusion additive manufacturing.
Abstract:
A method and an apparatus of a powder bed fusion additive manufacturing system that enables a quick change in the optical beam delivery size and intensity across locations of a print surface for different powdered materials while ensuring high availability of the system. A dynamic optical assembly containing a set of lens assemblies of different magnification ratios and a mechanical assembly may change the magnification ratios as needed. The dynamic optical assembly may include a transitional and rotational position control of the optics to minimize variations of the optical beam sizes across the print surface.
Abstract:
A manipulator device such as a robot arm that is capable of increasing manufacturing throughput for additively manufactured parts, and allows for the manipulation of parts that would be difficult or impossible for a human to move is described. The manipulator can grasp various permanent or temporary additively manufactured manipulation points on a part to enable repositioning or maneuvering of the part.
Abstract:
An additive manufacturing system including a two-dimensional energy patterning system for imaging a powder bed is disclosed. Improved optical systems supporting beam combining, beam steering, and both patterned and unpatterned beam recycling and re-use are described.
Abstract:
Die vorliegende Erfindung betrifft ein Verfahren zur Erzeugung einer Diffusionssperrschicht (1) umfassend Aluminiumoxid (8) auf einem Metallblech (2), das aus einem Grundwerkstoff (3) besteht, der zumindest Eisen (Fe) und Chrom (Cr) enthält. Das zur Bildung des Aluminiumoxids (8) benötigte Aluminium (10) ist im Grundwerkstoff (3) enthalten. Als Sauerstoffspender für die Oxidation des Aluminiums (10) zu α-Aluminiumoxid dient eine Auflage aus Titandioxid (4). Weiterhin wird auch eine Integration dieses Verfahrens in die Herstellung einer Abgasbehandlungseinheit (12) vorgeschlagen, wobei die Abgasbehandlungseinheit (12) einen Wabenkörper (13) und ein Gehäuse (14) aufweist und zumindest der Wabenkörper (13) oder das Gehäuse (14) mit einem Metallblech (2) gebildet ist und das Metallblech (2) aus einem Grundwerkstoff (3) besteht, der zumindest Eisen (Fe) und Chrom (Cr) enthält. Das Metallblech (2) umfasst demnach zumindest in einem Teilbereich (5) eine Oberflächenschicht (7), die zumindest Aluminiumoxid (8) und Titanoxid (9) umfasst.
Abstract:
L'invention concerne un ensemble d'assemblage par brasage d'un panneau (100) composite comprenant au moins deux parties séparées par un matériau d'apport et destinées à être liées entre elles par une brasure comprenant : un four permettant d'atteindre une température de brasage du panneau (100), un dispositif (1 ) d'assemblage comprenant un conformateur (20) présentant une forme similaire à la forme finale du panneau à braser, l'ensemble étant caractérisé en ce que le dispositif (1 ) d'assemblage comprend, en outre : des moyens d'appui (30) adaptés pour exercer une pression mécanique sur au moins une partie de la surface dudit panneau (1 00) selon une direction permettant de déformer de façon permanente le panneau (100) vers une forme dont la configuration se conforme à celle du conformateur (20), ces moyens d'appui (30) étant adaptés pour se déplacer sous l'action de moyens de contrainte élastique (210), les efforts exercés par lesdits moyens de contrainte élastique (210) étant déterminés de manière à ce que, à la température de brasage, ils exercent les efforts nécessaires à la déformation du panneau (100) contre le conformateur (20).