aNIR technology – an enhancer in the 3D-manufacturing process
By Dr Kai K. O. Bär, adphos Digital Printing GmbH
Introduction. Additive manufacturing, also called 3D-printing, is strongly entering the industrial material/components manufacturing industry. Especially in recent years, multiple technologies of additive manufacturing have been established and/or are under further development. Whether they are liquid, or solid (powder) based, most of them require thermal processing for heating, drying, melting, sintering and/or curing. The necessary thermal processing steps are crucial for quality and productivity and often drive the resulting performance of the adjacent manufacturing process. Thermal processes in 3D-printing. Depending on the materials used (e.g. polymers, metals, ceramics, glass) and the applied 3D-technology, either the materials have to be thermally treated directly to build a 3D-structure (like fused filament fabrication (FFF), selective laser sintering (SLS), electron beam melting (EBM)) or they require a thermal bonding/curing and/or fusing step (like for material jetting (MJ), binder jetting (BJ), laminated object manufacturing (LOM)).
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