Irradiation in generative fabrication

US9636769B2 · kind B2 · utility

Assignee

• MTU Aero Engines AG · DE

Inventors

• Thomas Goehler · Dachau, DE
• Thomas Hess · Frankfurt, DE
• Tobias Maiwald-Immer · Munich, DE

Key dates

• Filing date: Dec 11, 2014
• Grant date: May 2, 2017
• Expiry date: Jun 16, 2035

Classification

• Technology area (CPC Y): Emerging Cross-Sectional Technologies
• CPC primary: Y02P10/25
• WIPO field: Materials, metallurgy
• WIPO sector: Chemistry

Abstract

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.