Abstract:
A laser welding method, a laser welded joint, an outer panel, and a structure for a rolling stock. In the laser welding method, a plurality of plate-like members (1) and (2) are overlapped with each other and a laser beam is continuously radiated thereto from the surface outside direction of the members while moving the laser beam. Polishing treatment is applied to the outer surface of the plate-like member (2) on the opposite side (1) of the outer surface to which the laser beam is radiated in a direction approximately parallel with the direction of weld lines by the laser beam beforehand so that the traces of the welding are visually inconspicuous.
Abstract:
A method and an apparatus pertaining to recycling and reuse of unwanted light in additive manufacturing can multiplex multiple beams of light including at least one or more beams of light from one or more light sources. The multiple beams of light may be reshaped and blended to provide a first beam of light. A spatial polarization pattern may be applied on the first beam of light to provide a second beam of light. Polarization states of the second beam of light may be split to reflect a third beam of light, which may be reshaped into a fourth beam of light. The fourth beam of light may be introduced as one of the multiple beams of light to result in a fifth beam of light.
Abstract:
An additive manufacturing system including a two-dimensional energy patterning system for imaging a powder bed is disclosed. Improved structure formation, part creation and manipulation, use of multiple additive manufacturing systems, and high throughput manufacturing methods suitable for automated or semi-automated factories are also disclosed.
Abstract:
Method for removing at least part of a sea platform comprising a support structure with at least one cylindrical support beam located under water, which method comprises the steps of;providing a device for cutting one of the at least one cylindrical support beams, attaching the device in the circular configuration under water to one of the at least one cylindrical support beams with the fastener, wherein the nozzle openings of the molten metal jet cutting units are directed to and at least partly surround said cylindrical support beam, igniting the fuel material of the molten metal jet cutting units with the igniter to cut said surrounded cylindrical support beam with the molten metal jetted out of the nozzle openings, lifting the disconnected part of the sea platform to be removed with a removal vessel provided near the support structure, and transporting the disconnected part of the sea platform to be removed to a different location.
Abstract:
A method and apparatus for performing an operation on a structure. In one illustrative embodiment, an apparatus comprises a tool system (122) and a movement system (124). The tool system is configured to perform an operation at a location (130) on a structure (118). The movement system is configured to move the tool system along an elongate frame (116) on the structure to the location.
Abstract:
Verfahren zum Herstellen eines z. B. zylindrischen, konischen, bogenförmigen oder wendelförmigen Hohlkörpers aus Stahl mit einer Masse von mehr als 100 t, - wobei aus einem oder mehreren Stahlblechen (1) mehrere ebene oder gekrümmte Blechstreifen (2) geschnitten werden, - wobei mehrere Blechstreifen flächig zu jeweils einem mehrschichtigen Mantelsegment (4) verschweißt werden, - wobei mehrere Mantelsegmente miteinander zu einem hohlen Rohling (7) verschweißt werden und - wobei der z. B. zylindrische oder konische Hohlkörper aus dem hohlen Rohling (8) durch Umformung und/oder spanabhebende Bearbeitung gefertigt wird.