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Process chain concept for multimaterial components in additive manufacturing with laser beam melting

Poster presented at International Symposium on Additive Manufacturing, ISAM 2017, February 8-9, 2017, Dresden, Germany
Prozesskettenkonzept für Multimaterialkomponenten mittels generativem Laser-Strahlschmelzen
 
: Kordaß, Richard; Jaretzki, Martin

:
Poster urn:nbn:de:0011-n-4389874 (1.1 MByte PDF)
MD5 Fingerprint: 523de0c3b97ae0731f49197c27dee102
Erstellt am: 1.4.2017


2017, 1 Folie
International Symposium on Additive Manufacturing (ISAM) <2, 2017, Dresden>
Englisch
Poster, Elektronische Publikation
Fraunhofer IWU ()
Generative Fertigung; Multimaterial; Prozesskettenkonzept

Abstract
The additive multimaterial production extends the possibilities for the property gradation of components. At present, there are mainly approaches which aim at the exact positioning of powder particles [1,2]. The intermixing of the powder materials can, however, not be prevented during and especially after the layer construction. These powders are thus rendered unusable for further construction processes. To solve this problem, a system consisting of two mechanical paste dispensers and a powder suction unit was integrated into a LBM system "Realizer SLM100".In the LBM process, a cavity is first formed, where the present powder is removed and a pasty secondary component is applied. The laser unit is used to thermally activate the paste, which is supported by the heating system of the laser beam melting machine. The paste solidifies as a result of debinding and sintering. The software, which is part of the system, allows the manual and also the sequence-controlled movement of the system and its tools. A high degree of automation, which is absolutely necessary later on, is thus already integrated in the development phase. An application for this process is initially aimed at toolmaking by extending today's possibilities for conformal cooling. It is planned to implement a tool insert made of steel and copper in certain areas, where cooling channels can't be implemented. For future applications, the process is intended to build conductor paths with insulation in metal components, since pastes with different filling materials are available.

: http://publica.fraunhofer.de/dokumente/N-438987.html