Original powder application tool and vibration excited powder application tool Copyright: © IWM


Siyuan Qin © Copyright: IWM


Siyuan Qin

Research group Materials Engineering of Additive Manufacturing


+49 241 80 99547



Increased efficiency in the LPBF process and expansion of processable powder materials by means of vibration-excited powder application tool


Due to the high demands on flowability, only the gas-atomized powder is feasible for the LPBF process. However, the most commonly used atomisation method for the production of powder materials is water atomisation, which has a significantly lower price (up to 50%) than gas atomisation method. Besides, the powder spreading process influences the LPBF processing time and the quality of final components. In this project, a powder spreading tool will be developed to realize the usage of water atomized powder for LPBF process.


  • The development of a prototype of an ultrasonically simulated powder wiper
  • The improvement of powder spreading speed by 2-3 times for conventional gas-atomized 316L powder with the utilization of the ultrasonically simulated powder wiper
  • The feasibility of processing the water atomized 316L powder with poor flowability without reducing the density and mechanical properties of the produced parts
  • The increasing the efficiency of the LPBF process through a combination of increased powder spreading speed and the processability of more cost-effective, water-atomised powder materials

Project contents

  • Development of ultrasonically stimulated powder spreading unit and modification of test stand for coating quality
  • Processing of powder under a variation of powder spreading and process parameters
  • Microstructure characterisation and mechanical properties determination
  • Transfer of the ultrasonically stimulated powder coater to a commercial LPBF system and construction of a demonstrator

Project partner

  • Fraunhofer ILT Aachen
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IGF-Grant Number: 21573 N