Laser surface modification and polishing of additive manufactured metallic parts

Solheid, Juliana dos Santos; Seifert, Hans Jürgen; Pfleging, Wilhelm

doi:10.1016/j.procir.2018.08.111

Cited by 29 publications

(13 citation statements)

References 4 publications

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“…In addition to surface roughness, dimensional accuracy of AM parts can also be improved and sections with excessive material due to distortions occurring during the AM process can be removed by milling or turning operations. With regard to heat and surface treatments, it is reported that they can improve part quality, reduce surface roughness and relieve residuals stresses that in turn improves the fatigue life and microstructure of the AM parts [112][113][114][115][116][117][118][119][120][121].…”

Section: The Need For Hybridmentioning

confidence: 99%

Powder-based laser hybrid additive manufacturing of metals: a review

Jiménez

Bidare

Hassanin

et al. 2021

Int J Adv Manuf Technol

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Recent advances in additive manufacturing (AM) have attracted significant industrial interest. Initially, AM was mainly associated with the fabrication of prototypes, but the AM advances together with the broadening range of available materials, especially for producing metallic parts, have broaden the application areas and now the technology can be used for manufacturing functional parts, too. Especially, the AM technologies enable the creation of complex and topologically optimised geometries with internal cavities that were impossible to produce with traditional manufacturing processes. However, the tight geometrical tolerances along with the strict surface integrity requirements in aerospace, biomedical and automotive industries are not achievable in most cases with standalone AM technologies. Therefore, AM parts need extensive post-processing to ensure that their surface and dimensional requirements together with their respective mechanical properties are met. In this context, it is not surprising that the integration of AM with post-processing technologies into single and multi set-up processing solutions, commonly referred to as hybrid AM, has emerged as a very attractive proposition for industry while attracting a significant R&D interest. This paper reviews the current research and technology advances associated with the hybrid AM solutions. The special focus is on hybrid AM solutions that combine the capabilities of laser-based AM for processing powders with the necessary post-process technologies for producing metal parts with required accuracy, surface integrity and material properties. Commercially available hybrid AM systems that integrate laser-based AM with post-processing technologies are also reviewed together with their key application areas. Finally, the main challenges and open issues in broadening the industrial use of hybrid AM solutions are discussed.

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Section: The Need For Hybridmentioning

confidence: 99%

Powder-based laser hybrid additive manufacturing of metals: a review

Jiménez

Bidare

Hassanin

et al. 2021

Int J Adv Manuf Technol

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“…Ablation method is the other process using a laser that can evaporate the materials and the defected layer can be removed by this way from the 3D manufactured part. Overall, the laser processing of AM parts can improve considerably the roughness, wear resistance, microstructure, and porosity based on various research reports [137][138][139]. Cernasejus et al applied the laser processing using Nd: YAG laser for additively fabricated stainless-steel parts.…”

Section: Laser Processingmentioning

confidence: 99%

Metal additive manufacturing in the commercial aviation industry: A review

Gisario

Kazarian

Martina

et al. 2019

Journal of Manufacturing Systems

406

124

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The applications of Additive Manufacturing (AM) have been grown up rapidly in various industries in the past few decades. Among them, aerospace has been attracted more attention due to heavy investment of the principal aviation companies for developing the AM industrial applications. However, many studies have been going on to make it more versatile and safer technology and require making development in novel materials, technologies, process design, and cost efficiency. As a matter of fact, AM has a great potential to make a revolution in the global parts manufacturing and distribution while offering less complexity, lower cost, and energy consumption, and very highly customization. The current paper aims to review the last updates on AM technologies, material issues, postprocesses, and design aspects, particularly in the aviation industry. Moreover, the AM process is investigated economically including various cost models, spare part digitalization and environmental consequences. This review would be helpfully applied in both academia and industry as well.

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“…A number of studies are reported to evaluate the impact of the governing factors on surface roughness [9,10]. Namely, it has been shown that surface roughness can be effectively decreased below 1 µm, thus matching the usual requirements for the automotive and aerospace industry [6,7,11], although the initial surface topography is a factor for the overall effectiveness of LP [12].…”

Section: Introductionmentioning

confidence: 99%

“…Surface peaks are melted by the laser to fill the valleys and this redistribution of material results in smoother surfaces, provided that over-melting is avoided [8]. Both continuous-or pulsedwave emission of the laser beam can be considered for the LP process [9]. Thanks to these benefits, LP is receiving increasing interest for application on a wide range of metal alloys including steels, Co-, Ni-and Ti-based alloys, and has been investigated to the specific purpose of improving the surface quality of AM parts.…”

Section: Introductionmentioning

confidence: 99%

Automated laser polishing for surface finish enhancement of additive manufactured components for the automotive industry

Caggiano

Teti

Alfieri

2020

Prod. Eng. Res. Devel.

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Additive manufactured components require polishing to improve their inherently rough surface finish. In this work, an innovative laser polishing process based on wobbling of the laser beam is proposed for surface finish enhancement of additive manufactured parts made of Cr–Cu precipitation hardening steel, widely employed for mechanical components in the automotive industry. Parts were fabricated by selective laser melting and subjected to the innovative laser polishing under different process conditions. Surface characterization was performed by microstructural analysis and surface roughness measurement. Machine learning-based CNN processing of polished surface images was employed for automatic identification of optimal LP condition.

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Laser surface modification and polishing of additive manufactured metallic parts

Cited by 29 publications

References 4 publications

Powder-based laser hybrid additive manufacturing of metals: a review

Powder-based laser hybrid additive manufacturing of metals: a review

Metal additive manufacturing in the commercial aviation industry: A review

Automated laser polishing for surface finish enhancement of additive manufactured components for the automotive industry

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