Pulsed Laser Micro Polishing of Metals using Dual-beam Technology

Nüsser, Christian; Sändker, Hendrik; Willenborg, Edgar

doi:10.1016/j.phpro.2013.03.087

Cited by 28 publications

(20 citation statements)

References 2 publications

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“…Similar defects were also reported by Yermachenko et al [32] when LP VT16 titanium alloy in air. A comparative study involving the LµP of Ti-6Al-4V and martensitic tool steel with an additional laser beam for pre-heating the workpiece surfaces was detailed by Nüsser et al [33] . Although the dual beam approach was detrimental for the tool steel due to increased formation of martensite, improved surface finish (36% lower roughness) was observed for the Ti-6Al-4V material due to the extended melt duration.…”

Section: Laser Polishing Of Nickel and Titanium Alloysmentioning

confidence: 99%

Laser polishing of 3D printed mesoscale components

Bhaduri

Penchev

Batal

et al. 2017

Applied Surface Science

184

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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 Nickel and Titanium Alloysmentioning

confidence: 99%

Laser polishing of 3D printed mesoscale components

Bhaduri

Penchev

Batal

et al. 2017

Applied Surface Science

184

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“…Fibre and solid-state lasers are commonly used for re-melting, polishing and texturing the surface of metals, such as steel , titanium (Nusser et al, 2013), GGG70L cast iron (Ukar et al, 2013) and nickel-based Inconel ® 718 alloy (Kumstel and Kirsch, 2013). Khoong et al (2010) demonstrated that a 355 nm solid-state YAG laser can also be used for so called "soft marking" of silicon wafers.…”

Section: Introductionmentioning

confidence: 99%

Laser microsculpting for the generation of robust diffractive security markings on the surface of metals

Wlodarczyk

Ardron

Waddie

et al. 2015

Journal of Materials Processing Technology

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a b s t r a c tWe report the development of a laser-based process for the direct writing ('microsculpting') of unique security markings (reflective phase holograms) on the surface of metals. In contrast to the common approaches used for unique marking of the metal products and components, e.g., polymer holographic stickers which are attached to metals as an adhesive tape, our process enables the generation of the security markings directly onto the metal surface and thus overcomes the problems with tampering and biocompatibility which are typical drawbacks of holographic stickers. The process uses 35 ns laser pulses of wavelength 355 nm to generate optically-smooth deformations on the metal surface using a localised laser melting process. Security markings (holographic structures) on 304-grade stainless steel surface are fabricated, and their resulted optical performance is tested using a He-Ne laser beam of 632.8 nm wavelength.

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“…Nüsser et al [15] has developed a dual-laser system in which the CW laser was to pre-heat the surface as high as possible without melting the surface, the pulsed laser implemented MPFV method to polish the surface.…”

Section: Experiments Of Dual-beam Laser Polishingmentioning

confidence: 99%

“…Hafiz et al [8] and Nüsser et al [15] have investigated that a combined CW and pulse laser polishing as a two-step process on various alloy melts and shown to improve the surface finish. However, such previous works focused on the polishing of ground flat surface rather than freeform surface.…”

Section: Experiments Of Dual-beam Laser Polishingmentioning

confidence: 99%

Experiment Study of Rapid Laser Polishing of Freeform Steel Surface by Dual-Beam

et al. 2019

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One of the challenges regarding widespread use of parts made from alloy steel is their time-consuming polishing process. A rough freeform surface of part has been often expected to be polished rapidly up to a smooth surface finish. The focus of this study is to develop a fast polishing method of freeform surface by using dual-beam lasers. The dual-beam laser system consists of continuous laser (CW) and pulsed laser based on a five-axis CNC device. In this study, a series of experiments of CW laser polishing present the effects of different spot irradiation on surface topography, then the combination trajectory of zigzag and square waveform of pulsed laser is explored to realize a “melting peak for filling into valley” (MPFV) method. The polishing experiment on a semisphere of S136H steel polished by dual-beam shows that a rough semisphere surface was rapidly polished from initial state value of Sa (=877 nm) to post-polished value of Sa (=142 nm), and the polishing efficiency is as high as 2890 cm2/H.

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Pulsed Laser Micro Polishing of Metals using Dual-beam Technology

Cited by 28 publications

References 2 publications

Laser polishing of 3D printed mesoscale components

Laser polishing of 3D printed mesoscale components

Laser microsculpting for the generation of robust diffractive security markings on the surface of metals

Experiment Study of Rapid Laser Polishing of Freeform Steel Surface by Dual-Beam

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