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Funktionales Laserfinishing additiv gefertigter PA12-Bauteile

Authors: Eckhardt, Lukas; Layher, Michel; Hopf, Andreas; Bliedtner, Jens;

Funktionales Laserfinishing additiv gefertigter PA12-Bauteile

Abstract

Das pulverbasierte Multi Jet Fusion Verfahren (MJF) hat sich seit der Einführung 2016 in der additiven Serienfertigung etabliert. Einige Anwendungsfelder von MJF-Bauteilen werden jedoch durch eine prozessbedingt körnige Oberfläche mit Rauheiten von Ra > 5 μm eingeschränkt. Ziel dieser Forschungsarbeit ist daher die Identifikation und Charakterisierung von Methoden zur Reduzierung der Rauheit sowie zur Anpassung der optischen und haptischen Oberflächeneigenschaften. Im Mittelpunkt steht die Glättung durch Laserstrahlpolieren (LSP). Damit ist es möglich, den PA12-Kunststoff lokal aufzuschmelzen und die Rauheit auf Ra < 1 μm zu reduzieren. Anschließend können zusätzlich Verfahren wie Metallisieren oder Pulverbeschichten eingesetzt werden, um funktionelle Eigenschaften der Bauteiloberflächen anzupassen.

The powder-based Multi Jet Fusion process (MJF) has become an established technology in additive series production since its launch in 2016. MJF components have a distinctive grainy surface with a roughness of Ra > 5 μm. The aim of this study is the identification and characterization of methods to reduce the roughness and adapt optical and haptic surface properties in order to expand the scope of MJF applications. The focus is set on smoothing by laser beam polishing. With this process it is possible to locally melt the PA12 plastic and reduce the roughness to Ra < 1 μm. Subsequently additional processes, such as metallizing or powder coating, can be utilized in order to adapt the functional properties of the component’s surface.

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selected citations
These citations are derived from selected sources.
This is an alternative to the "Influence" indicator, which also reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
BIP!Citations provided by BIP!
popularity
This indicator reflects the "current" impact/attention (the "hype") of an article in the research community at large, based on the underlying citation network.
BIP!Popularity provided by BIP!
influence
This indicator reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
BIP!Influence provided by BIP!
impulse
This indicator reflects the initial momentum of an article directly after its publication, based on the underlying citation network.
BIP!Impulse provided by BIP!
0
Average
Average
Average
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