Influence of laser beam fluence on surface quality, microstructure, mechanical properties, and tribological results for laser polishing of SKD61 tool steel

Chang, Chang Shuo; Chen, Ting‐Hsuan; Li, Tse Chang; Lin, Shih Lung; Liu, Sung Ho; Lin, Jhih-Min

doi:10.1016/j.jmatprotec.2015.09.009

Cited by 43 publications

(24 citation statements)

References 19 publications

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“…The effects of process parameters such as energy density [17][18][19], scanning speed [20] and step-over distance [21] on the quality of laser polished surfaces have been studied by numerous researchers, with the majority concluding that laser energy density has the strongest influence on resulting surface integrity [19]. Laser energy density is typically controlled by varying the focal offset distance (FOD) from the workpiece, which correspondingly alters the diameter of the beam.…”

Section: Laser Polishing Of Steel and Cast Ironmentioning

confidence: 99%

Laser polishing of 3D printed mesoscale components

Bhaduri

Penchev

Batal

et al. 2017

Applied Surface Science

190

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Process optimisation for laser polishing novel 3D printed SS316L parts  Evaluating the effects of key polishing parameters on SS316L surface roughness  Detailed spectroscopic analysis of oxide layer formation due to laser polishing  Comparative surface integrity analysis of SS parts polished in air and argon  A maximum reduction in roughness of over 94% achieved at optimised polishing settings

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Section: Laser Polishing Of Steel and Cast Ironmentioning

confidence: 99%

Laser polishing of 3D printed mesoscale components

Bhaduri

Penchev

Batal

et al. 2017

Applied Surface Science

190

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“…The main results were a 70% reduction in roughness and an increase in microhardness, scratch, and wear resistance. Chang et al [21] adopted a pulsed fiber laser to polish a SKD61 steel tool, obtaining a reduction in roughness. Campanelli et al [22] studied the laser finishing on parts obtained by SLM.…”

Section: Introductionmentioning

confidence: 99%

Laser Finishing of Ti6Al4V Additive Manufactured Parts by Electron Beam Melting

Genna

Rubino

2019

Applied Sciences

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In this work, the feasibility of laser surface finishing of parts obtained by additive manufacturing (AM) was investigated. To this end, a 450 W fiber laser (operating in continuous wave, CW) was adopted to treat the surface of Ti-6Al-4V samples obtained via electron beam melting (EBM). During the tests, different laser energy densities and scanning speeds were used. In order to assess the quality of the treatment, either the as-built or the treated samples were analyzed by means of a three-dimensional (3D) profilometer, digital microscopy, and scanning electron microscopy. Analysis of variance (ANOVA) was performed to check which and how process parameters affected the finishing. The results show that, in the best conditions, the laser treatment reduced surface roughness by about 80%.

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“…Spatial Fourier analysis transforms a spatial signal into a frequency signal to get shape, frequency, and amplitude. The spectrum analysis method is used to analyze the surface profile and power spectral density (PSD) curve before and after LP is obtained [22]. Figure 4a,c are the spatial frequency amplitudes of the initial surface in X and Y directions.…”

Section: Resultsmentioning

confidence: 99%

Numerical Simulation and Verification of Laser-Polishing Free Surface of S136D Die Steel

Zhou

Zhao

et al. 2021

Metals

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As a novel polishing technology, polishing by laser beam radiation can be used to improve the sample surface finish without causing material losses. In order to study the effect of laser polishing on the surface morphology of S136D die steel, an L16(44) orthogonal experiment was designed to describe the variation trend of surface roughness with energy density. The two-dimensional transient model of laser polishing was established to simulate the evolution process of material surface morphology during laser polishing by combining numerical simulation with the experiment. The model uses a moving laser heat source to study the effects of capillary pressure and thermocapillary pressure in the laser polishing process. The experimental results show that the minimum roughness can be reduced to 0.764 μm, and the error between the actual molten pool depth and the simulated molten pool depth is 5.3%.

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Influence of laser beam fluence on surface quality, microstructure, mechanical properties, and tribological results for laser polishing of SKD61 tool steel

Cited by 43 publications

References 19 publications

Laser polishing of 3D printed mesoscale components

Laser polishing of 3D printed mesoscale components

Laser Finishing of Ti6Al4V Additive Manufactured Parts by Electron Beam Melting

Numerical Simulation and Verification of Laser-Polishing Free Surface of S136D Die Steel

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