Abstract:
Die Erfindung betrifft eine Vorrichtung zum Ausrichten und Schweißen von drei oder vier Blechen eines Kastenträgers, insbesondere eines Hauptträgers für Krane, der mindestens zwei in Kastenträgerlängsrichtung beabstandete, an den Innenseitenflächen der Bleche angeschweißte plattenförmige Querschotten aufweist, mit einem nach unten offenen U-förmigen Fertigungsrahmen, der auf zwei parallelen Schienen zwangsgeführt über den Kastenträger hinweg in Kastenträgerlängsrichtung verfahrbar ist und der längs- und/oder vertikalbeabstandete, den Seitenblechen unmittelbar gegenüberliegende und zumindest zeitweise aktivierbare Magnete trägt und mit mehreren am Fertigungsrahmen angeordneten Magneten in Fahrtrichtung nachgeordneten Schweißvorrichtungen, mittels derer die Bleche im Verlauf des Fahrweges jeweils mittels Kehlnähten miteinander paarweise verschweißbar sind. Um eine Vorrichtung anzugeben, bei der das Heften der Bleche vor dem Schweißen entfallen kann, wird vorgeschlagen, dass die Magnete (6) als im Fertigungsrahmen (1) drehgelagerte Rollen ausgebildet sind, deren Drehachsen jeweils in einer Ebene quer zur Kastenträgerlängsrichtung und bezüglich des ausgerichteten unmittelbar gegenüberliegenden Seitenblechs (8a) parallel zu diesem verlaufen.
Abstract:
A flash-butt welder having a stationary head 41 and a moving head 42, a pair of electrodes 45a, 45b, and 46a, 46b arranged to each of the stationary and moving heads, respectively, wherein power source transformers 12 through 16 are located at the stationary head 41 side, four bus bars 21 through 24 connecting the power source transformers 12 through 16 with the electrodes 45a, 45b, 46a, and 46b are arranged at symmetrical positions surrounding a billet 10, while the bus bars, 22 and 24 as half of the number are connected to the electrodes 46a and 46b at the moving head 42 side.
Abstract:
A method of processing long product on a numerical control machine including a gantry, a cutting bed, and a gantry holding a cutting torch, includes the steps of moving the gantry over a stationary long product on the cutting bed while cutting the long product with the cutting torch to process the long product. The cutting torch is capable of moving in at least the X-, Y-, and Z-directions relative to an arbitrary coordinate system defining the dimensions of the long product.
Abstract:
A method of manufacturing a furcated composite post (1) comprising at least two strips (7, 8) that are joined together along their length in a furcated manner. The method comprises the steps of feeding one or more of the strips (7, 8) at a set rate to working rolls of a roll mill for profile rolling to a desired cross section/profile, feeding the strips (7, 8) at the same set rate to positioning rolls for holding the strips (7, 8) in a correct orientation for joining, and joining the strips together, preferably by welding the strips (7, 8) along their length.
Abstract:
A system for narrow-gap electroslag-welded moment connections welded between vertical column flanges includes vertical column doubler plates with top and bottom stiffeners and horizontal beam side plates aligned with the doubier plates to carry the moment load through the vertical support columns. An embodiment includes an elliptical radius in each side plate. Disclosure of an automated modular method for narrow-gap electroslag-welded moment connections is included.
Abstract:
A bumper reinforcement beam includes a first sheet forming at least one tube including a front wall, and a second sheet welded to and supporting the front wall in a laminar arrangement adding stiffness to the front wall. A related method includes uncoiling and welding the first and second sheets together, and forming the first sheet into a tubular shape with a first portion forming a front wall, the second sheet supporting the first portion. An apparatus includes a pair of uncoilers for uncoiling first and second sheets of material together, a welder securing the first and second sheets together, and a roll forming mill configured to roll form the sheets into a tubular shape, where the first sheet defines a front wall and portions of the second sheet supporting the front wall.
Abstract:
The invention relates to a method for manufacturing a structural element intended for aeronautical construction, typically a wing spar comprising a web and one or more adjacent stringer elements, comprising the following steps (i) at least a first and second metal block are made available, the limit of elasticity under compression of the first metal block being greater than that of the second metal block, (ii) the first metal block comprises a first web portion and at least one stringer element the second metal block comprises a second web portion placing the first and second web portions end-to-end over their entire common length. The invention permits the manufacture of bifunctional or multifunctional structural elements comprising several assembled parts but whose stringers have a mechanical strength greater than that obtained by traditional methods .