Laser build-up welding of high heat resistant super alloys by means of oscillating beam guidance

US10478921B2 · kind B2 · utility

Assignees

• Siemens Aktiengesellschaft · DE
• Fraunhofer-Gesellschaft zur förderung der angewandten Forschung e.V. · DE

Inventors

• Nikolai Arjakine · Berlin, DE
• Georg Bostanjoglo · Berlin, DE
• Bernd Burbaum · Falkensee, DE
• Stefanie Linnenbrink · Kreuzau, DE
• Frank Mentzel · Aachen, DE
• Michael Ott · Wetter (Ruhr), DE
• Sebastian Piegert · Berlin, DE
• Norbert Pirch · Aachen, DE
• Andres Gasser · Aachen, DE

Key dates

• Filing date: Mar 6, 2015
• Grant date: Nov 19, 2019
• Expiry date: Jan 12, 2036

Classification

• Technology area (CPC Y): Emerging Cross-Sectional Technologies
• CPC primary: Y02T50/60
• WIPO field: Engines, pumps, turbines
• WIPO sector: Mechanical engineering

Abstract

A method for generating, in layers, an application structure made of high heat resistant super alloys on a substrate is provided. A powdery construction material is melted by an energy beam at a working point, wherein the working point is guided across the substrate along a primary movement direction and thus swings transversely to the primary movement direction. The working point thereby swings from a first edge of a respective layer of the application structure to a second edge of the layer. In this way, a time interval passes between departure from a respective edge and a return to the respective edge directly following the departure, such that a melt bath on the respective edge solidifies into a paste-like zone during the time interval.