Increasing process efficiency in laser beam melting by setting a process-specific melt track geometry using temporally and locally modulated energy deposition (T09#)

• Subject Area: Joining and Separation Technology ; Primary Shaping and Reshaping Technology, Additive Manufacturing
• Term: since 2026
• Project identifier: Deutsche Forschungsgemeinschaft (DFG) - Project number 236616214

For additive manufacturing, in which components are produced by means of laser beam melting from a powder bed or by means of a powder gas jet, the application of the findings from the sub-project on modulated laser beam welding should achieve a significant increase in the build-up speed. Ultra-fast beam modulation allows a significant reduction in the degree of overlap of individual melt tracks and thus an increase in efficiency by a factor of 2. The main scientific issues here are determining the threshold for the transition from heat conduction welding to keyhole-based welding in powder-based materials.

• DFG Programme: Collaborative Research Centres (Transfer Project)
• Subproject of: SFB 1120: Precision manufacturing by controlling melt dynamics and solidification in production processes
• Applicant Institution: Rheinisch-Westfälische Technische Hochschule Aachen
• Business and Industry: Nikon SLM Solutions AG
• Project Head: Professor Dr.-Ing. Arnold Gillner