Irradiation in generative fabrication

摘要

The present invention relates to a method for the generative production of components, particularly of single-crystalline or directionally-solidified components, particularly for the production of components for turbomachines, in which the component is constructed in layers on a substrate or a previously produced part of the component (3), wherein a construction in layers takes place by melting of powder material in layers with a high-energy beam (14) and solidification of the powder melt (16) takes place, wherein the high-energy beam has a beam cross section (19) in the area of its impingement on the powder material that is altered in comparison to a circular or other symmetrical cross section and/or the beam energy is distributed non-uniformly, in particular asymmetrically or eccentrically, over the beam section.

主权项

1. A method for the generative production of components for turbomachines, in which the component is constructed in layers on a substrate or a previously produced part of the component (3), wherein a construction in layers results by melting of powder material in layers with a high-energy beam (13) and solidification of the powder melt (16),
wherein the high-energy beam has a beam cross section (19) in the area of its impingement on the powder material that is altered in comparison to a circular or other symmetrical cross section and/or the beam energy is distributed, over the beam cross section, in a shape that is selected from the group consisting of non-uniform, asymmetrical and eccentric, and that the powder material, after melting has occurred, is irradiated a second time, at a time delay to the melting, by a high-energy beam with an energy input into the powder material that is altered in comparison to the melting, and wherein the solidification of the powder melt occurs epitaxially.