A surface quality improvement apparatus for ABS parts fabricated by additive manufacturing

Kuo, Chil-Chyuan; Wang, Chen-Wei; Lee, Yi-Feng; Liu, Yanlin; Qiu, Qiao-Yi

doi:10.1007/s00170-016-9129-8

Cited by 25 publications

(8 citation statements)

References 20 publications

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“…When acetone dissolves the outer surface of the print part, the voids on the surface and gaps between layers get filled with dissolved polymer, and the surface becomes smoother when solidifying. This process negatively affects the mechanical properties of the treated part [ 221 , 222 , 223 , 224 , 225 ].…”

Section: Treatment Methods To Overcome or Minimize The Defects In mentioning

confidence: 99%

FDM-Based 3D Printing of Polymer and Associated Composite: A Review on Mechanical Properties, Defects and Treatments

2020

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Fused deposition modelling (FDM) is one of the fastest-growing additive manufacturing methods used in printing fibre-reinforced composites (FRC). The performances of the resulting printed parts are limited compared to those by other manufacturing methods due to their inherent defects. Hence, the effort to develop treatment methods to overcome these drawbacks has accelerated during the past few years. The main focus of this study is to review the impact of those defects on the mechanical performance of FRC and therefore to discuss the available treatment methods to eliminate or minimize them in order to enhance the functional properties of the printed parts. As FRC is a combination of polymer matrix material and continuous or short reinforcing fibres, this review will thoroughly discuss both thermoplastic polymers and FRCs printed via FDM technology, including the effect of printing parameters such as layer thickness, infill pattern, raster angle and fibre orientation. The most common defects on printed parts, in particular, the void formation, surface roughness and poor bonding between fibre and matrix, are explored. An inclusive discussion on the effectiveness of chemical, laser, heat and ultrasound treatments to minimize these drawbacks is provided by this review.

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Section: Treatment Methods To Overcome or Minimize The Defects In mentioning

confidence: 99%

FDM-Based 3D Printing of Polymer and Associated Composite: A Review on Mechanical Properties, Defects and Treatments

2020

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“…To improve surface finish of 3d-printed parts using FDM type printers, various approaches have been studied: determination of optimal building direction [7][8][9], mechanical machining [10][11][12], abrasive flow finishing [13], and chemical treatments [14][15][16]. Although these approaches could improve surface finish of 3d-printed parts, they cannot enhance mechanical strength in the thickness direction (Z-direction), which is known to be much inferior to those in the in-plane directions (X-or Y-directions) [17].…”

Section: Introductionmentioning

confidence: 99%

Improvement of mechanical properties and surface finish of 3d-printed polylactic acid parts by constrained remelting

Kim¹,

Kim²,

Lee³

et al. 2017

Adv. Mater. Lett.

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According to recent advancements in additive manufacturing (AM) technology, also known as 3d printing, the role of AM has changed from the conventional rapid prototyping (RP) to direct fabrication of functional parts. The AM technology based on layer-by-layer manufacturing has a limitation in its poor surface finish and mechanical strength, especially along the thickness direction. This study proposes a new post-processing method for thermoplastic AM products with the goal of improving surface finish and mechanical strength. The proposed method, called constrained remelting, uses a metal mould with a negative shape that surrounds the printed polymer part. This mould is heated near the melting temperature of the polymer material so that the printed sample is melted and reshaped inside the mould. To evaluate changes in surface finish and mechanical strength, tensile specimens were printed and tested with various build directions; the tensile test revealed that the Z-directionally printed specimen had much lower mechanical strength than the specimens built along X-or Y-directions. Remelting experiments were then performed for the Z-directionally printed specimen under various remelting conditions (remelting temperature and initial thickness), and the resulting changes in surface finish and tensile strength were investigated. Among these remelting conditions, the 160C remelting temperature and 4.0 mm thickness condition provided the best result where surface finish and tensile strength were improved significantly so as to be comparable to those of injection-moulded products.

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“…Different metallic coatings are often used, improving electrical, thermal, optical, and mechanical properties, as well as erosion and corrosion resistance, and achieving a decorative appearance of the AMprinted parts. See, for example, the paper by Kuo et al 2017, which specifically stated that improving the surface quality of additive manufactured parts by minimizing the roughness of the surface is a promising engineering topic, which can be achieved by coating the printed surface [17]. The quality of the coating depends on various factors, including the parameters of the AM process, e.g., the position and orientation, and the presence of external defects, the part's surface roughness, and the cleaning process of the surface before coating [18].…”

Section: Electroless Plating Of Gold Silver and Au-ag Alloysmentioning

confidence: 99%

Gold, Silver, and Electrum Electroless Plating on Additively Manufactured Laser Powder-Bed Fusion AlSi10Mg Parts: A Review

et al. 2021

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Additive manufacturing (AM) revolutionary technologies open new opportunities and challenges. They allow low-cost manufacturing of parts with complex geometries and short time-to-market of products that can be exclusively customized. Additive manufactured parts often need post-printing surface modification. This study aims to review novel environmental-friendly surface finishing process of 3D-printed AlSi10Mg parts by electroless deposition of gold, silver, and gold–silver alloy (e.g., electrum) and to propose a full process methodology suitable for effective metallization. This deposition technique is simple and low cost method, allowing the metallization of both conductive and insulating materials. The AlSi10Mg parts were produced by the additive manufacturing laser powder bed fusion (AM-LPBF) process. Gold, silver, and their alloys were chosen as coatings due to their esthetic appearance, good corrosion resistance, and excellent electrical and thermal conductivity. The metals were deposited on 3D-printed disk-shaped specimens at 80 and 90 °C using a dedicated surface activation method where special functionalization of the printed AlSi10Mg was performed to assure a uniform catalytic surface yielding a good adhesion of the deposited metal to the substrate. Various methods were used to examine the coating quality, including light microscopy, optical profilometry, XRD, X-ray fluorescence, SEM–energy-dispersive spectroscopy (EDS), focused ion beam (FIB)-SEM, and XPS analyses. The results indicate that the developed coatings yield satisfactory quality, and the suggested surface finishing process can be used for many AM products and applications.

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A surface quality improvement apparatus for ABS parts fabricated by additive manufacturing

Cited by 25 publications

References 20 publications

FDM-Based 3D Printing of Polymer and Associated Composite: A Review on Mechanical Properties, Defects and Treatments

FDM-Based 3D Printing of Polymer and Associated Composite: A Review on Mechanical Properties, Defects and Treatments

Improvement of mechanical properties and surface finish of 3d-printed polylactic acid parts by constrained remelting

Gold, Silver, and Electrum Electroless Plating on Additively Manufactured Laser Powder-Bed Fusion AlSi10Mg Parts: A Review

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