3D printing of release-agent retaining molds

Xiao, Yang; Wu, Tao; Liu, Desheng; Wu, Jiayu; Wang, Yixian; Lu, Yaozhong; Ji, Zhongying; Jia, Xin; Jiang, Pan; Wang, Xiaolong

doi:10.1016/j.addma.2023.103580

Cited by 3 publications

(2 citation statements)

References 47 publications

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“…Key outcomes and contributions of this research to the literature can be summarised as following: Among different surface finishes, glossy inserts were shown to require significantly less demoulding energy compared to the steel moulds reported in the literature. This is particularly noteworthy since glossy surfaces are both aesthetic and functional across various applications, including but not limited to microfluidics, optics and functional surfaces (Payami Golhin and Strandlie, 2024; Yang et al. , 2023; Gaddam et al.…”

Section: Discussionmentioning

confidence: 99%

Investigating demoulding characteristics of material jetted rapid mould inserts for microinjection moulding using inline monitoring and surface metrology

Gülçür,

Isakov,

Charmet

et al. 2024

RPJ

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Purpose This study aims to investigate the demoulding characteristics of material-jetted rapid mould inserts having different surface textures for micro-injection moulding using in-line measurements and surface metrology. Design/methodology/approach Material-jetted inserts with the negative cavity of a circular test product were fabricated using different surface finishes and printing configurations, including glossy, matte and vertical settings. In-line measurements included the recording of demoulding forces at 10 kHz, which was necessary to capture the highly-dynamic characteristics. A robust data processing algorithm was used to extract reliable demoulding energies per moulding run. Thermal imaging captured surface temperatures on the inserts after demoulding. Off-line measurements, including focus variation microscopy and scanning electron microscopy, compared surface textures after a total of 60 moulding runs. Findings A framework for capturing demoulding energies from material-jetted rapid tools was demonstrated and compared to the literature. Glossy surfaces resulted in significantly reduced demoulding forces compared to the industry standard steel moulds in the literature and their material-jetted counterparts. Minimal changes in the surface textures of the material-jetted inserts were found, which could potentially permit their prolonged usage. Significant correlations between surface temperatures and demoulding energies were demonstrated. Originality/value The research presented here addresses the very topical issue of demoulding characteristics of soft, rapid tools, which affect the quality of prototyped products and tool durability. This was done using state-of-the-art, high-speed sensing technologies in conjunction with surface metrology and their durability for the first time in the literature.

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Section: Discussionmentioning

confidence: 99%

Investigating demoulding characteristics of material jetted rapid mould inserts for microinjection moulding using inline monitoring and surface metrology

Gülçür,

Isakov,

Charmet

et al. 2024

RPJ

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“…In most DIW technologies, the ink materials generally meet the printing requirements by incorporating fillers. However, this approach is influenced by complex factors and does not facilitate the regulation of mechanical properties through structures [31][32][33][34].…”

Section: Introductionmentioning

confidence: 99%

3D printed modular Bouligand dissipative structures with adjustable mechanical properties for gradient energy absorbing

Xiao,

Zhang,

Zhai

et al. 2024

Mater. Futures

Self Cite

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3D printing enables the creation of intricate, layered structures with specific micro and macro architectures that cannot be achieved through traditional methods. By designing 3D structures with geometric precision, selective regulation of mechanical properties can be achieved, allowing for efficient dissipation of mechanical energy. In this study, a series of modular samples inspired by Bouligand structure were designed and produced through a direct ink writing system along with a classical printable polydimethylsiloxane (PDMS) ink. By changing the angles of filaments in adjacent layers of these modular samples (from 30° to 90°) and the filament spacing during printing (from 0.8 mm to 2.4 mm), they show adjustable mechanical properties. Compression mechanical testing revealed that the 3D printed modular Bouligand structures exhibit stress-strain responses that enable multiple regulation of elasticity modulus from 0.06 Mpa to over 0.8 Mpa. The mechanical properties were regulated over 10 times in printed samples prepared using homogeneous materials. The gradient control mechanism of mechanical properties during this process was analyzed using finite element analysis. Lastly, 3D printed customized modular Bouligand structures can be assembled to compose an array with Bouligand structures show different orientations and interlayer details according to specific needs. Begin with decomposing the original Bouligand structure to achieving modular 3D printing, and then assembling the modular samples into a special Bouligand structures array, this research will providing parameters for achieving gradient energy absorption structures.

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3D printing for ultra-precision machining: current status, opportunities, and future perspectives

He,

Yip,

Yan

et al. 2024

Front. Mech. Eng.

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Additive manufacturing, particularly 3D printing, has revolutionized the manufacturing industry by allowing the production of complex and intricate parts at a lower cost and with greater efficiency. However, 3D-printed parts frequently require post-processing or integration with other machining technologies to achieve the desired surface finish, accuracy, and mechanical properties. Ultra-precision machining (UPM) is a potential machining technology that addresses these challenges by enabling high surface quality, accuracy, and repeatability in 3D-printed components. This study provides an overview of the current state of UPM for 3D printing, including the current UPM and 3D printing stages, and the application of UPM to 3D printing. Following the presentation of current stage perspectives, this study presents a detailed discussion of the benefits of combining UPM with 3D printing and the opportunities for leveraging UPM on 3D printing or supporting each other. In particular, future opportunities focus on cutting tools manufactured via 3D printing for UPM, UPM of 3D-printed components for real-world applications, and post-machining of 3D-printed components. Finally, future prospects for integrating the two advanced manufacturing technologies into potential industries are discussed. This study concludes that UPM is a promising technology for 3D-printed components, exhibiting the potential to improve the functionality and performance of 3D-printed products in various applications. It also discusses how UPM and 3D printing can complement each other.

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3D printing of release-agent retaining molds

Cited by 3 publications

References 47 publications

Investigating demoulding characteristics of material jetted rapid mould inserts for microinjection moulding using inline monitoring and surface metrology

Investigating demoulding characteristics of material jetted rapid mould inserts for microinjection moulding using inline monitoring and surface metrology

3D printed modular Bouligand dissipative structures with adjustable mechanical properties for gradient energy absorbing

3D printing for ultra-precision machining: current status, opportunities, and future perspectives

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3D printing of release-agent retaining molds

Cited by 3 publications

References 47 publications

Investigating demoulding characteristics of material jetted rapid mould inserts for micro­injection moulding using in­line monitoring and surface metrology

Investigating demoulding characteristics of material jetted rapid mould inserts for micro­injection moulding using in­line monitoring and surface metrology

3D printed modular Bouligand dissipative structures with adjustable mechanical properties for gradient energy absorbing

3D printing for ultra-precision machining: current status, opportunities, and future perspectives

Contact Info

Product

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Investigating demoulding characteristics of material jetted rapid mould inserts for microinjection moulding using inline monitoring and surface metrology

Investigating demoulding characteristics of material jetted rapid mould inserts for microinjection moulding using inline monitoring and surface metrology