Fundamental aspects and recent developments in metal surface polishing with energy beam irradiation

Deng, Tiantian; Li, Jianjun; Zheng, Zhizhen

doi:10.1016/j.ijmachtools.2019.103472

Cited by 69 publications

(24 citation statements)

References 153 publications

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“…Laser surface re-melting is an important physical phenomenon during the laser polishing interactions, which involves re-scanning and re-melting solidified layers, during which an extremely shallow molten pool is produced in a very short time, reducing the viscosity of material [ 21 ]. As shown in Figure 2 b, the molten phase will be driven away from the convex peaks and flow into the valleys via gravity and surface tension [ 22 ]. Meanwhile, recoil pressure occurs on the molten surface due to vaporization of the material when the temperature reaches boiling point, during which the recoil pressure further flattens the melted PLA surface.…”

Section: Resultsmentioning

confidence: 99%

“…Although there have been many studies on parameter optimization, such as the study by Khosravani et al, which presented the influence of two printing parameters on the strength of 3D-printed components [19], solutions for the staircase effect and the occurrence of non-uniform temperature in the FDM formation process are still required [20,21]. Compared with traditional surface post-treatment technologies, such as mechanical polishing and chemical mechanical polishing, laser polishing, as an emerging method, can improve the surface integrity of metal and non-metal components via re-melting the thermal input of the laser irradiation and rapid smooth solidification [22,23]. In recent years, laser polishing has been successfully employed to improve the surface finish of components fabricated using 3D printing due to its non-contact mode of operation, high efficiency, precision, and lack of mechanical damage [22,24].…”

Section: Introductionmentioning

confidence: 99%

“…Compared with traditional surface post-treatment technologies, such as mechanical polishing and chemical mechanical polishing, laser polishing, as an emerging method, can improve the surface integrity of metal and non-metal components via re-melting the thermal input of the laser irradiation and rapid smooth solidification [ 22 , 23 ]. In recent years, laser polishing has been successfully employed to improve the surface finish of components fabricated using 3D printing due to its non-contact mode of operation, high efficiency, precision, and lack of mechanical damage [ 22 , 24 ].…”

Section: Introductionmentioning

confidence: 99%

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Mechanical Characterization and Thermodynamic Analysis of Laser-Polished Landscape Design Products Using 3D Printing

Wen

Wu³

2021

Materials

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Recent innovations in 3D printing technologies and processes have influenced how landscape products are designed, built, and developed. In landscape architecture, reduced-size models are 3D-printed to replicate full-size structures. However, high surface roughness usually occurs on the surfaces of such 3D-printed components, which requires additional post-treatment. In this work, we develop a new type of landscape design structure based on the fused deposition modeling (FDM) technique and present a laser polishing method for FDM-fabricated polylactic acid (PLA) mechanical components, whereby the surface roughness of the laser-polished surfaces is reduced from over Ra 15 µm to less than 0.25 µm. The detailed results of thermodynamics and microstructure evolution are further analyzed during laser polishing. The stability and accuracy of the results are evaluated based on the standard deviation. Additionally, the superior tensile and flexural properties are examined in the laser-polished layer, in which the ultimate tensile strength (UTS) is increased by up to 46.6% and the flexural strength is increased by up to 74.5% compared with the as-fabricated components. Finally, a real polished landscape model is simulated and optimized using a series of scales.

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Section: Resultsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Mechanical Characterization and Thermodynamic Analysis of Laser-Polished Landscape Design Products Using 3D Printing

Wen

Wu³

2021

Materials

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“…LDW is compatible with metals [16], ceramics [17], polymers [18], and more exotic materials such as wood [19] and leather [20]. Furthermore, being capable of both subtractive and additive operations, LDW can implement multiple machining processes, such as printing [21], depositing [22], the joining [23] of various materials, and the polishing [24], coating [25], and cleaning [26] of a surface. Finally, lasers are controlled numerically and can be connected to other physical or digital objects, enabling the realisation of laserbased cyber-physical systems (CPSs) for advanced manufacturing.…”

Section: Introductionmentioning

confidence: 99%

Acoustically-shaped laser: a machining tool for Industry 4.0

et al. 2020

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The high versatility of laser direct-write (LDW) systems offers remarkable opportunities for Industry 4.0. However, the inherent serial nature of LDW systems can seriously constrain manufacturing throughput and, consequently, the industrial scalability of this technology. Here we present a method to parallelise LDWs by using acoustically shaped laser light. We use an acousto-optofluidic (AOF) cavity to generate acoustic waves in a liquid, causing periodic modulations of its refractive index. Such an acoustically controlled optical medium diffracts the incident laser beam into multiple beamlets that, operating in parallel, result in enhanced processing throughput. In addition, the beamlets can interfere mutually, generating an intensity pattern suitable for processing an entire area with a single irradiation. By controlling the amplitude, frequency, and phase of the acoustic waves, customised patterns can be directly engraved into different materials (silicon, chromium, and epoxy) of industrial interest. The integration of the AOF technology into an LDW system, connected to a wired-network, results into a cyber-physical system (CPS) for advanced and high-throughput laser manufacturing. A proof of concept for the computational ability of the CPS is given by monitoring the fidelity between a physical laser-ablated pattern and its digital avatar. As our results demonstrate, the AOF technology can broaden the usage of lasers as machine tools for industry 4.0

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“…This operation is mainly done on the face of components in order to improve the surface finish. Also, it is often done to further improve the looks by creating good surface finish, prevent contamination of work pieces, remove oxidation, create a reflective surface, or prevent corrosion [2]. The surface finish obtained depends on grit size of the abrasive used [3].…”

Section: Introductionmentioning

confidence: 99%

Design and Fabrication of a Continuous Polishing Machine

Vijayan¹,

Raj²,

Muthirulan³

et al. 2019

JESA

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Polishing is a surface machining technique to produce a high-quality finished surface on the product. It is a multistage process, in which each subsequent stage uses a finer abrasive. This paper aims to design and fabricate a polishing machine that performs polishing stages continuously, eliminating the idle time in the polishing process. The designed machine consists of four spindle heads, each of which carries a unique flap wheel. The flap wheels can raise or lower according to the size of the workpiece to be polished. Three types of rollers were adopted in the machine: a mild steel roller coated with heat resistant rubber, a hylam roller and a nylon roller. A pneumatic clamping system was placed at the feeder to fix and hold the workpiece. In addition, the compressor pressure is regulated by a pressure regulator. A prototype of the polishing machine was fabricated according to the design, and used to polish several types of workpieces. The results show that this machine can polish stainless-steel flat bars, square tubes and rectangular tubes into 10mm-150mm width products, operate at a high speed of 2,000~3,000 rpm, and, most importantly, execute multiple polishing operations continuously. The proposed polishing machine is helpful to the automation of the polishing industry.

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Fundamental aspects and recent developments in metal surface polishing with energy beam irradiation

Cited by 69 publications

References 153 publications

Mechanical Characterization and Thermodynamic Analysis of Laser-Polished Landscape Design Products Using 3D Printing

Mechanical Characterization and Thermodynamic Analysis of Laser-Polished Landscape Design Products Using 3D Printing

Acoustically-shaped laser: a machining tool for Industry 4.0

Design and Fabrication of a Continuous Polishing Machine

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