| 摘要 |
The process comprises melting single-component or multi-component metallic powder in layers at appropriate cross-sectional regions by selective laser sintering and/or laser melting to produce a metallic component, subjecting the produced component to a fracture splitting process in which the component is fractured into two fractional parts (1, 2) along a fracture line (4), constructing a component region (6, 9) by a generative production process on a surface of one of the fractional parts, and connecting the two fractional parts to one another at their fractured sites to form the component. The process comprises melting single-component or multi-component metallic powder in layers at appropriate cross-sectional regions by selective laser sintering and/or laser melting to produce a metallic component, subjecting the produced component to a fracture splitting process in which the component is fractured into two fractional parts (1, 2) along a fracture line (4), constructing a component region (6, 9) by a generative production process on a surface of one of the fractional parts, and connecting the two fractional parts to one another at their fractured sites to form the component, where a certain region of the fracture line passes through an opening (3) and a hollow space of the component. During the melting step, a variation in the energy input per unit area into the powder material proceeding from the laser beam is effected within one powder layer or in different powder layers and/or the laser beam further melts, heats or removes the powder within the powder layer. The variation in the energy input per unit area and melting, heating or removal processes are performed in the region of the fracture line. The opening and/or the hollow space: undergoes a thermal and/or mechanical treatment in certain regions after the fracture splitting process and before connecting the fractional parts to one another; is provided with a coating in certain regions; or is attached to a body. The component comprises first and second component regions. The first component region is produced directly on the second component region by the selective laser sintering and/or laser melting process, and the second component region is produced by a conventional production process such as a casting process or a chip-forming process, where the first and second component regions are connected to one another. The component has geometrically shaped predetermined breaking points in the region of the fracture line. The material removal and/or material weakening process: lies in the superficial region of the fracture line; is performed by the superficial action of a laser or a chip-forming tool; and is effected using the laser from the laser sintering and/or laser melting process. An independent claim is included for a component comprising an opening and/or a hollow space. |
