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3D multi-material metal printing of delicate structures

: Riecker, S.; Studnitzky, T.; Andersen, O.; Kieback, B.

European Powder Metallurgy Association -EPMA-:
EURO PM 2014 Congress & Exhibition : Proceedings; 21 - 24 September 2014, The Messezentrum Salzburg, Austria
Stockholm: EPMA, 2014
ISBN: 978-1-899072-45-3
6 S.
International Powder Metallurgy Congress and Exhibition (Euro PM) <2014, Salzburg>
Fraunhofer IFAM, Institutsteil Pulvermetallurgie und Verbundwerkstoffe Dresden ()

A new 3D screen printing manufacturing method is used to perform printing experiments with a two material layout. For this purpose the screen and the material are changed during the printing process and the materials are printed in an alternating rhythm. We studied the hindering effect of the already printed structures on the printing process. The printing into deepenings constitutes a challenge for the screen printing process and can cause a decrease in quality compared to a one material design. If the aspect ratio of the deepening is high the structure can’t be printed and failures occur. With regard to the layout this effect can be compensated by varying the printing rhythm. A frequent change and thus low difference of height between the printed structures is beneficial for the two material print. We like to present first results of the research and give an insight into multi-material 3D screen printing.