Lehrstuhl für Fertigungstechnologie, Universität Erlangen-Nürnberg

Basic Investigation on Direct Laser Beam Sintering of metal powders

Project Status: finished


The Direct Metal Laser Sintering process DMLS is an additive laser aided process applied for Rapid Prototyping and Rapid Tooling. With this process complex shaped parts can be produced, but the process is partially unstable and the quality of the parts has a potential for optimization. The high temperature gradients, caused by the local energy input during processing, lead to internal stresses in the sintered regions. Residual stresses are mainly responsible for a reduction in strength and can cause warpage. It is the aim of the investigation to gain basic knowledge about the processes at laser sintering. For this purpose, an FE-model was developed which shows the effects of the influencing parameters. The gained knowledge will then lead to an adapted strategy for an optimized sintering process, which will allow a high manufacturing quality.

Letztes Update: 28.04.2010