Three-dimensional printing conformal cooling with structural lattices for plastic injection molding

The design of three-dimensional printing based conformal cooling channels (CCCs) in injection molding holds great significance. Compared to CCCs, conformal cooling (CC) cavity solutions show promise in delivering enhanced cooling performance for plastic products, although they have been underexplore...

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Main Authors: Shen, Suping, Kanbur, Baris Burak, Wu, Chenlong, Duan, Fei
Other Authors: School of Mechanical and Aerospace Engineering
Format: Article
Language:English
Published: 2024
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Online Access:https://hdl.handle.net/10356/178994
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Institution: Nanyang Technological University
Language: English
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spelling sg-ntu-dr.10356-1789942024-07-20T16:48:08Z Three-dimensional printing conformal cooling with structural lattices for plastic injection molding Shen, Suping Kanbur, Baris Burak Wu, Chenlong Duan, Fei School of Mechanical and Aerospace Engineering Singapore Centre for 3D Printing Engineering Conformal cooling cavity Plastic injection The design of three-dimensional printing based conformal cooling channels (CCCs) in injection molding holds great significance. Compared to CCCs, conformal cooling (CC) cavity solutions show promise in delivering enhanced cooling performance for plastic products, although they have been underexplored. In this research, CC cavity is designed within the mold geometry, reinforced by body-centered cubic (BCC) lattice structures to enhance mechanical strength. Three distinct BCC lattice variations have been integrated into the CC cavity: the BCC structure, BCC with cubes, and BCC with pillars. The thermal performances of the BCC lattice-added CC cavity are assessed numerically after experimental validation. To provide feasible solutions from viewpoints of thermal performances, various BCC lattice structure thicknesses are analyzed in the range of 0.8–1.2 mm. Thermal simulation outcomes reveal that thicker lattice structures enhance mechanical strength but simultaneously lead to an increase in cooling time. Upon examining all the proposed CC cavity solutions supported by BCC, the cooling times range from 2.2 to 4 s, resulting in a reduction of 38.6% to 66.1% when compared to conventional straightdrilled channels. In contrast to CCCs, CC cavities have the potential to decrease the maximum temperature nonuniformity from 8.5 to 6 K. Nevertheless, the presence of lattice structures in CC cavity solutions results in an elevated pressure drop, reaching 2.8 MPa, whereas the results for CCCs remain below 2.1 MPa. Published version 2024-07-15T07:55:56Z 2024-07-15T07:55:56Z 2024 Journal Article Shen, S., Kanbur, B. B., Wu, C. & Duan, F. (2024). Three-dimensional printing conformal cooling with structural lattices for plastic injection molding. Frontiers in Heat and Mass Transfer, 22(2), 397-415. https://dx.doi.org/10.32604/fhmt.2024.048984 2151-8629 https://hdl.handle.net/10356/178994 10.32604/fhmt.2024.048984 2-s2.0-85194878298 2 22 397 415 en Frontiers in Heat and Mass Transfer © The Author(s). Published by Tech Science Press. This work is licensed under a Creative Commons Attribution 4.0 International License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. application/pdf
institution Nanyang Technological University
building NTU Library
continent Asia
country Singapore
Singapore
content_provider NTU Library
collection DR-NTU
language English
topic Engineering
Conformal cooling cavity
Plastic injection
spellingShingle Engineering
Conformal cooling cavity
Plastic injection
Shen, Suping
Kanbur, Baris Burak
Wu, Chenlong
Duan, Fei
Three-dimensional printing conformal cooling with structural lattices for plastic injection molding
description The design of three-dimensional printing based conformal cooling channels (CCCs) in injection molding holds great significance. Compared to CCCs, conformal cooling (CC) cavity solutions show promise in delivering enhanced cooling performance for plastic products, although they have been underexplored. In this research, CC cavity is designed within the mold geometry, reinforced by body-centered cubic (BCC) lattice structures to enhance mechanical strength. Three distinct BCC lattice variations have been integrated into the CC cavity: the BCC structure, BCC with cubes, and BCC with pillars. The thermal performances of the BCC lattice-added CC cavity are assessed numerically after experimental validation. To provide feasible solutions from viewpoints of thermal performances, various BCC lattice structure thicknesses are analyzed in the range of 0.8–1.2 mm. Thermal simulation outcomes reveal that thicker lattice structures enhance mechanical strength but simultaneously lead to an increase in cooling time. Upon examining all the proposed CC cavity solutions supported by BCC, the cooling times range from 2.2 to 4 s, resulting in a reduction of 38.6% to 66.1% when compared to conventional straightdrilled channels. In contrast to CCCs, CC cavities have the potential to decrease the maximum temperature nonuniformity from 8.5 to 6 K. Nevertheless, the presence of lattice structures in CC cavity solutions results in an elevated pressure drop, reaching 2.8 MPa, whereas the results for CCCs remain below 2.1 MPa.
author2 School of Mechanical and Aerospace Engineering
author_facet School of Mechanical and Aerospace Engineering
Shen, Suping
Kanbur, Baris Burak
Wu, Chenlong
Duan, Fei
format Article
author Shen, Suping
Kanbur, Baris Burak
Wu, Chenlong
Duan, Fei
author_sort Shen, Suping
title Three-dimensional printing conformal cooling with structural lattices for plastic injection molding
title_short Three-dimensional printing conformal cooling with structural lattices for plastic injection molding
title_full Three-dimensional printing conformal cooling with structural lattices for plastic injection molding
title_fullStr Three-dimensional printing conformal cooling with structural lattices for plastic injection molding
title_full_unstemmed Three-dimensional printing conformal cooling with structural lattices for plastic injection molding
title_sort three-dimensional printing conformal cooling with structural lattices for plastic injection molding
publishDate 2024
url https://hdl.handle.net/10356/178994
_version_ 1814047075520741376