Study of Effect of Laser Marking Data Matrix Symbols on Titanium Alloy Sheets Using Nd:YAG Laser

Li, Chun Ling

doi:10.4028/www.scientific.net/amr.941-944.2165

Cited by 4 publications

(3 citation statements)

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“…The author has studied the effect of laser on base material in previous research, which showed that deformation and crack did not exist in substrate materials after laser marking [9]. One can say that the effect of laser on base materials is negligible in this research.…”

Section: Introductionmentioning

confidence: 75%

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Research on the Quality of Laser Marked Data Matrix Symbols

Lü

2018

KEM

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To evaluate the quality of the laser direct part marked Data Matrix symbols on titanium alloy substrates, the quality assessment methods at home and abroad were compared. A new quality assessment method of combining the effect of the laser on substrate materials and symbol grade of laser marked Data Matrix was put forward. Depending on previous research works, orthogonal experiment results were analyzed again and a modified nonlinear mathematics model was established. Analysis results indicate that this modified model can explain 90.6% of symbol contrast change and it is statistically significant. So it is better than previous linear regression model and can be used to estimate the quality of laser marked Data Matrix symbols on titanium alloy substrates. The nonlinear mathematics model can also explain the laser parameters influence on the symbol contrast.

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Section: Introductionmentioning

confidence: 75%

“…Reference Data Matrix Symbol. The reference Data Matrix symbol encodes the data string 1A2B3C4D5E and its dimensions are 16×16 modules [9][10][11][12]. An example of a reference Data Matrix symbol is given in Figure 1 (a).…”

Section: Methodsmentioning

confidence: 99%

Research on the Quality of Laser Marked Data Matrix Symbols

Lü

2018

KEM

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“…The internal micro-stresses of the laser marked blue area were analyzed using a D8-ADVANCE X-ray diffractometer (XRD) which is copper (Cu) target X-ray tube. The XRD was equiped with a θ/θ goniometer whose angle repeatability is 0.0001º and degree of accuracy is ±0.001º [17].…”

Section: Research Methods 21 Experimental Setupmentioning

confidence: 99%

Laser-Induced Color Marking of Titanium Alloy

2016

TELKOMNIKA

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Keywords: laser color marking, titanium alloy, surface oxidation, laser processing parameterCopyright © 2016 Universitas Ahmad Dahlan. All rights reserved. IntroductionColor markings on metal surfaces are made by the traditional technologies such as printing, electroplating, painting and so on. However, these processes have some limitations in practical applications [1]. The poor scratch and wear of printing coatings and complexity of electroplating processes and high cost of paintings are recognized problems. So the traditional color marking technologies are gradually replaced by the laser color marking technology which requires a laser to scan the metal surface and give rise to surface oxidation to create a permanent color marking on a metal surface and does not use any chemicals, coatings or tools [2]. The laser-induced color patterns can make the metal surface visually more attractive and are gaining interest for consumer products [3,4].A lot of investigations have been carried out to better understand the laser color marking process. The color patterns were marked on stainless steel by an infrared laser [5,6], or fiber laser [7][8][9][10][11][12] or KrF excimer laser [13] or UV laser [14] and marked on titanium by a fiber laser [15,16]. These studies mainly focused on the influence of laser processing parameters on the resulting colors and the analysis of laser induced oxide films on metal surfaces. It has been proved that the laser-induced colors are sensitive to laser processing parameters which consistently appear in these studies are laser power, scanning speed, and focal plane offset. But the controlled parameters differ in various laser marking systems. The effect of other parameters on the laser-induced colors was not reported, such as pumping current, Q-switch frequency, laser line spacing, Q release time etc. Regarding the analysis of oxide films, the surface morphology and optical properties of the oxide films and their thickness were mainly studied. But as the laser beam generates intense heat, internal stresses may occur, which may cause distortion of the substrates outside its limits. It is must be avoided in industrial applications of laser coloring marking technology. So far the related researches haven't been reported.In this study, a Nd:YAG nanosecond laser was used to mark several color square patterns of 5mm×5mm on titanium alloy substrates in air. The influence of selected laser processing parameters on the obtained colors was investigated by One-Factor-at-a-Time (OFAT) experiments. As well as the influence of the resulting colors on the substrate was

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Research on the quality of laser marked data matrix symbols

2018

IOP Conf. Ser.: Mater. Sci. Eng.

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Study of Effect of Laser Marking Data Matrix Symbols on Titanium Alloy Sheets Using Nd:YAG Laser

Cited by 4 publications

References 4 publications

Research on the Quality of Laser Marked Data Matrix Symbols

Research on the Quality of Laser Marked Data Matrix Symbols

Laser-Induced Color Marking of Titanium Alloy

Research on the quality of laser marked data matrix symbols

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