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| Naji, M. |
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| Motta, Antonella |
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| Aletan, Dirar |
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| Mohamed, Tarek |
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| Ertürk, Emre |
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| Taccardi, Nicola |
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| Kononenko, Denys |
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| Petrov, R. H. | Madrid |
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| Alshaaer, Mazen | Brussels |
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| Bih, L. |
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| Casati, R. |
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| Muller, Hermance |
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| Kočí, Jan | Prague |
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| Šuljagić, Marija |
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| Kalteremidou, Kalliopi-Artemi | Brussels |
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| Azam, Siraj |
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| Ospanova, Alyiya |
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| Blanpain, Bart |
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| Ali, M. A. |
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| Popa, V. |
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| Rančić, M. |
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| Ollier, Nadège |
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| Azevedo, Nuno Monteiro |
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| Landes, Michael |
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| Rignanese, Gian-Marco |
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Schwanekamp, Tobias
in Cooperation with on an Cooperation-Score of 37%
Topics
Publications (6/6 displayed)
- 2022Impact of cobalt content and grain growth inhibitors in laser-based powder bed fusion of WC-Co
- 2019Thermal post-treatment of additively manufactured WC-Co processed by laser powder bed fusion
- 2019The impact of different binder systems in laser powder bed fusion of tungsten carbide composites
- 2018Parameter study on laser beam melting of WC-Co at 800°C pre-heating temperature
- 2017 Geometrical and topological potentialities and restrictions in selective laser sintering of customized carbide precision tools
- 2016Additive Manufacturing of application optimized tungsten carbide precision tools
Places of action
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document
Geometrical and topological potentialities and restrictions in selective laser sintering of customized carbide precision tools
Abstract
The joint research project PraeziGen is dedicated to achieve a technology leap by applying additive manufacturing (AM), respectively selective laser sintering (SLS) or melting (SLM), to fabricate customized carbide precision tools with complex inner and outer shape. A main objective during the project is the development of a process chain for AM of near-net-shape cutting tools and the qualification of carbide materials, especially tungsten carbide (WC-CO), for the SLS process. The increased design freedom inherent to AM processes offers significant benefits with respect to the development of cutting tools, such as a light-weight design and an increased degree of functionality. The ability to fabricate customized cooling channel systems inside the tool is of particular interest for industrial applications. Those applications are currently limited to the processing of steel alloys and have not been published for WC-Co so far. This is mainly caused by the intrinsic issues in SLS of tungsten carbide such as the formation of pores, cracks and brittle material phases, which were already identified in several studies. However, for the design of tools with complex shapes, not only the material microstructure and quality, but also the process-related geometrical and topological restrictions are of utmost importance. For example, the surface roughness inside the generated cooling channel has a significant impact on the pressure losses and the flow rate of the coolant. For SLM/SLS-qualified materials such as steel or aluminum alloys, appropriate design guidelines have already been established to consider the specific characteristics of the additively manufactured parts. Distinct guidelines for WC-Co are not yet existing and have to be elaborated. Hence, the proposed paper deals with the study of the geometric and topologic design aspects in SLS of WC-Co with regard to the characteristic design features of application optimized cutting tools.