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Additive Manufacturing of WC-Co Specimens with Internal Channels
Most material removal in modern manufacturing is currently performed using tools with indexable inserts. Additive manufacturing allows for the creation of new, experimental insert shapes and, more importantly, internal structures, such as channels for coolant. This study deals with developing a proc...
Autores principales: | , , , , , , |
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Formato: | Online Artículo Texto |
Lenguaje: | English |
Publicado: |
MDPI
2023
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Materias: | |
Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC10253827/ https://www.ncbi.nlm.nih.gov/pubmed/37297041 http://dx.doi.org/10.3390/ma16113907 |
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author | Sykora, Jindrich Sedlmajer, Michael Schubert, Tim Merkel, Markus Kroft, Lubos Kucerova, Ludmila Rehor, Jan |
author_facet | Sykora, Jindrich Sedlmajer, Michael Schubert, Tim Merkel, Markus Kroft, Lubos Kucerova, Ludmila Rehor, Jan |
author_sort | Sykora, Jindrich |
collection | PubMed |
description | Most material removal in modern manufacturing is currently performed using tools with indexable inserts. Additive manufacturing allows for the creation of new, experimental insert shapes and, more importantly, internal structures, such as channels for coolant. This study deals with developing a process for efficiently manufacturing WC-Co specimens with internal coolant channels with a focus on obtaining a suitable microstructure and surface finish, especially inside the channels. The first part of this study covers the development of process parameters to achieve a microstructure without cracks and with minimal porosity. The next stage focuses solely on improving the surface quality of the parts. Special attention is given to the internal channels, where true surface area and surface quality are evaluated, as these characteristics greatly influence coolant flow. To conclude, WC-Co specimens were successfully manufactured and a microstructure with low porosity and no cracks was achieved and an effective parameter set was found. We have developed a process that produces parts with a surface roughness comparable to those of standard SLS manufacturing of steel parts, while still providing a high-quality internal microstructure. The most suitable parameter set resulted in a profile surface roughness of Ra 4 μm and Rz 31 μm and areal surface roughness of Sa 7 µm and Sz 125 µm. |
format | Online Article Text |
id | pubmed-10253827 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2023 |
publisher | MDPI |
record_format | MEDLINE/PubMed |
spelling | pubmed-102538272023-06-10 Additive Manufacturing of WC-Co Specimens with Internal Channels Sykora, Jindrich Sedlmajer, Michael Schubert, Tim Merkel, Markus Kroft, Lubos Kucerova, Ludmila Rehor, Jan Materials (Basel) Article Most material removal in modern manufacturing is currently performed using tools with indexable inserts. Additive manufacturing allows for the creation of new, experimental insert shapes and, more importantly, internal structures, such as channels for coolant. This study deals with developing a process for efficiently manufacturing WC-Co specimens with internal coolant channels with a focus on obtaining a suitable microstructure and surface finish, especially inside the channels. The first part of this study covers the development of process parameters to achieve a microstructure without cracks and with minimal porosity. The next stage focuses solely on improving the surface quality of the parts. Special attention is given to the internal channels, where true surface area and surface quality are evaluated, as these characteristics greatly influence coolant flow. To conclude, WC-Co specimens were successfully manufactured and a microstructure with low porosity and no cracks was achieved and an effective parameter set was found. We have developed a process that produces parts with a surface roughness comparable to those of standard SLS manufacturing of steel parts, while still providing a high-quality internal microstructure. The most suitable parameter set resulted in a profile surface roughness of Ra 4 μm and Rz 31 μm and areal surface roughness of Sa 7 µm and Sz 125 µm. MDPI 2023-05-23 /pmc/articles/PMC10253827/ /pubmed/37297041 http://dx.doi.org/10.3390/ma16113907 Text en © 2023 by the authors. https://creativecommons.org/licenses/by/4.0/Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (https://creativecommons.org/licenses/by/4.0/). |
spellingShingle | Article Sykora, Jindrich Sedlmajer, Michael Schubert, Tim Merkel, Markus Kroft, Lubos Kucerova, Ludmila Rehor, Jan Additive Manufacturing of WC-Co Specimens with Internal Channels |
title | Additive Manufacturing of WC-Co Specimens with Internal Channels |
title_full | Additive Manufacturing of WC-Co Specimens with Internal Channels |
title_fullStr | Additive Manufacturing of WC-Co Specimens with Internal Channels |
title_full_unstemmed | Additive Manufacturing of WC-Co Specimens with Internal Channels |
title_short | Additive Manufacturing of WC-Co Specimens with Internal Channels |
title_sort | additive manufacturing of wc-co specimens with internal channels |
topic | Article |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC10253827/ https://www.ncbi.nlm.nih.gov/pubmed/37297041 http://dx.doi.org/10.3390/ma16113907 |
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