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Analysing Powder Injection Moulding of a Helix Geometry Using Soft Tooling
Freeform injection moulding is a novel technology for powder injection moulding where a sacrificial 3D printed mould (i.e., a soft tooling) is used as an insert in the injection process. The use of 3D printed moulds enable a higher geometrical design flexibility as compared to the conventional injec...
Autores principales: | , , , , |
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Formato: | Online Artículo Texto |
Lenguaje: | English |
Publicado: |
MDPI
2021
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Materias: | |
Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8659891/ https://www.ncbi.nlm.nih.gov/pubmed/34883687 http://dx.doi.org/10.3390/polym13234183 |
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author | Basso, Alberto Zhang, Yang Kjeldahl Pløger, Jacob Spangenberg, Jon Hansen, Hans Nørgaard |
author_facet | Basso, Alberto Zhang, Yang Kjeldahl Pløger, Jacob Spangenberg, Jon Hansen, Hans Nørgaard |
author_sort | Basso, Alberto |
collection | PubMed |
description | Freeform injection moulding is a novel technology for powder injection moulding where a sacrificial 3D printed mould (i.e., a soft tooling) is used as an insert in the injection process. The use of 3D printed moulds enable a higher geometrical design flexibility as compared to the conventional injection moulding process. However, there is still very limited knowledge on how the sacrificial soft tooling material and powder suspension handles the increased geometrical complexity during the process. In this study, a stainless steel powder suspension is injected into a geometrically challenging sacrificial mould (viz. a helix structure) that is produced by vat photopolymerization additive manufacturing. Computed tomography is used to quantify the geometrical precision of the mould both before and after injection. In addition, a new numerical model that considers the suspension feedstock is developed to investigate the powder injection moulding process. The numerical results are found to be in qualitative good agreement with the experimental findings in terms of pinpointing critical areas of the structure, thereby highlighting a new pathway for evaluating sacrificial inserts for powder injection moulding with a high geometrical complexity. |
format | Online Article Text |
id | pubmed-8659891 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2021 |
publisher | MDPI |
record_format | MEDLINE/PubMed |
spelling | pubmed-86598912021-12-10 Analysing Powder Injection Moulding of a Helix Geometry Using Soft Tooling Basso, Alberto Zhang, Yang Kjeldahl Pløger, Jacob Spangenberg, Jon Hansen, Hans Nørgaard Polymers (Basel) Article Freeform injection moulding is a novel technology for powder injection moulding where a sacrificial 3D printed mould (i.e., a soft tooling) is used as an insert in the injection process. The use of 3D printed moulds enable a higher geometrical design flexibility as compared to the conventional injection moulding process. However, there is still very limited knowledge on how the sacrificial soft tooling material and powder suspension handles the increased geometrical complexity during the process. In this study, a stainless steel powder suspension is injected into a geometrically challenging sacrificial mould (viz. a helix structure) that is produced by vat photopolymerization additive manufacturing. Computed tomography is used to quantify the geometrical precision of the mould both before and after injection. In addition, a new numerical model that considers the suspension feedstock is developed to investigate the powder injection moulding process. The numerical results are found to be in qualitative good agreement with the experimental findings in terms of pinpointing critical areas of the structure, thereby highlighting a new pathway for evaluating sacrificial inserts for powder injection moulding with a high geometrical complexity. MDPI 2021-11-29 /pmc/articles/PMC8659891/ /pubmed/34883687 http://dx.doi.org/10.3390/polym13234183 Text en © 2021 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 Basso, Alberto Zhang, Yang Kjeldahl Pløger, Jacob Spangenberg, Jon Hansen, Hans Nørgaard Analysing Powder Injection Moulding of a Helix Geometry Using Soft Tooling |
title | Analysing Powder Injection Moulding of a Helix Geometry Using Soft Tooling |
title_full | Analysing Powder Injection Moulding of a Helix Geometry Using Soft Tooling |
title_fullStr | Analysing Powder Injection Moulding of a Helix Geometry Using Soft Tooling |
title_full_unstemmed | Analysing Powder Injection Moulding of a Helix Geometry Using Soft Tooling |
title_short | Analysing Powder Injection Moulding of a Helix Geometry Using Soft Tooling |
title_sort | analysing powder injection moulding of a helix geometry using soft tooling |
topic | Article |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8659891/ https://www.ncbi.nlm.nih.gov/pubmed/34883687 http://dx.doi.org/10.3390/polym13234183 |
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