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Thermomechanical properties of 3D-printed sand moulds using inorganic binder

Additive Manufacturing of 3D-printed sand cores using the binder jetting process is well-established in prototype manufacturing. Due to the rising focus on sustainability and the fact that printed cores are shifting to serial production, a transition from organic to inorganic binder systems is takin...

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Autores principales: Wendling, Jochen, Thorborg, Jesper, Sterzenbach, Marcel, Schüssler, Johannes, Bührig-Polaczek, Andreas
Formato: Online Artículo Texto
Lenguaje:English
Publicado: Elsevier 2023
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC10477477/
https://www.ncbi.nlm.nih.gov/pubmed/37674832
http://dx.doi.org/10.1016/j.heliyon.2023.e19300
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author Wendling, Jochen
Thorborg, Jesper
Sterzenbach, Marcel
Schüssler, Johannes
Bührig-Polaczek, Andreas
author_facet Wendling, Jochen
Thorborg, Jesper
Sterzenbach, Marcel
Schüssler, Johannes
Bührig-Polaczek, Andreas
author_sort Wendling, Jochen
collection PubMed
description Additive Manufacturing of 3D-printed sand cores using the binder jetting process is well-established in prototype manufacturing. Due to the rising focus on sustainability and the fact that printed cores are shifting to serial production, a transition from organic to inorganic binder systems is taking place. To ensure a stable casting process and reduce the scrap rate accurate simulation tools are required. However, a study about the thermomechanical properties and the anisotropy of 3D-printed sand cores has not yet been conducted. In this work the thermomechanical properties of 3D-printed sand cores in three different printing orientations using inorganic binder are given. In contrast to homogeneous materials like metals, the simulation of sand cores requires new material models due to the dependency to hydrostatic pressure. The Drucker-Prager soil plasticity model is used, and the parameters needed for the Drucker-Prager-Cap model until [Formula: see text] are analysed using the three-point-bending test, the indirect tensile test and the uniaxial compression test. In addition to these specific parameters, also general parameters required for mechanical simulation like the Young's modulus, the Poisson's ratio, the density and the thermal expansion coefficient are given. In comparison to the reference binder system for shot cores using inorganic binder, the 3D-printed cores showed a higher mechanical strength. In the tensile region due to the higher binder content and in the compressive region due to the higher AFS number. Furthermore, the binder system for printed cores showed a lower thermostability.
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spelling pubmed-104774772023-09-06 Thermomechanical properties of 3D-printed sand moulds using inorganic binder Wendling, Jochen Thorborg, Jesper Sterzenbach, Marcel Schüssler, Johannes Bührig-Polaczek, Andreas Heliyon Research Article Additive Manufacturing of 3D-printed sand cores using the binder jetting process is well-established in prototype manufacturing. Due to the rising focus on sustainability and the fact that printed cores are shifting to serial production, a transition from organic to inorganic binder systems is taking place. To ensure a stable casting process and reduce the scrap rate accurate simulation tools are required. However, a study about the thermomechanical properties and the anisotropy of 3D-printed sand cores has not yet been conducted. In this work the thermomechanical properties of 3D-printed sand cores in three different printing orientations using inorganic binder are given. In contrast to homogeneous materials like metals, the simulation of sand cores requires new material models due to the dependency to hydrostatic pressure. The Drucker-Prager soil plasticity model is used, and the parameters needed for the Drucker-Prager-Cap model until [Formula: see text] are analysed using the three-point-bending test, the indirect tensile test and the uniaxial compression test. In addition to these specific parameters, also general parameters required for mechanical simulation like the Young's modulus, the Poisson's ratio, the density and the thermal expansion coefficient are given. In comparison to the reference binder system for shot cores using inorganic binder, the 3D-printed cores showed a higher mechanical strength. In the tensile region due to the higher binder content and in the compressive region due to the higher AFS number. Furthermore, the binder system for printed cores showed a lower thermostability. Elsevier 2023-08-22 /pmc/articles/PMC10477477/ /pubmed/37674832 http://dx.doi.org/10.1016/j.heliyon.2023.e19300 Text en © 2023 The Authors. Published by Elsevier Ltd. https://creativecommons.org/licenses/by-nc-nd/4.0/This is an open access article under the CC BY-NC-ND license (http://creativecommons.org/licenses/by-nc-nd/4.0/).
spellingShingle Research Article
Wendling, Jochen
Thorborg, Jesper
Sterzenbach, Marcel
Schüssler, Johannes
Bührig-Polaczek, Andreas
Thermomechanical properties of 3D-printed sand moulds using inorganic binder
title Thermomechanical properties of 3D-printed sand moulds using inorganic binder
title_full Thermomechanical properties of 3D-printed sand moulds using inorganic binder
title_fullStr Thermomechanical properties of 3D-printed sand moulds using inorganic binder
title_full_unstemmed Thermomechanical properties of 3D-printed sand moulds using inorganic binder
title_short Thermomechanical properties of 3D-printed sand moulds using inorganic binder
title_sort thermomechanical properties of 3d-printed sand moulds using inorganic binder
topic Research Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC10477477/
https://www.ncbi.nlm.nih.gov/pubmed/37674832
http://dx.doi.org/10.1016/j.heliyon.2023.e19300
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