Researching | Laser Marking Process of High-Gray Two-Dimensional Code on Aluminum Alloy Surface

Laser & Optoelectronics Progress, Volume. 58, Issue 21, 2114003(2021)

Laser Marking Process of High-Gray Two-Dimensional Code on Aluminum Alloy Surface

Zhiyong Yu¹, Xicheng Wei¹, Yao Liang¹, and Baodong Shen^2、*

Author Affiliations

¹School of Materials Science and Engineering, Shanghai University, Shanghai 200072, China

²Shanghai Yinma Marking Co., Ltd., Shanghai 201601, China

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Figures&Tables (11)

References (15)

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Figures & Tables(11)

Fig. 1. Laser marking process

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Fig. 2. Scanning path of laser spot

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Fig. 3. Macro-topographies of 6061 aluminum alloy plate before and after marking and two-dimension QR code after laser marking

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Fig. 4. Gray value of each sample marked area before and after laser marking

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Fig. 5. Reflectance of each sample in visible light band

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Fig. 6. SEM images of sample b surface

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Fig. 7. SEM images of sample c surface

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Fig. 8. SEM images of sample d surface

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Table 1. Chemical composition of 6061 aluminum alloy
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Table 1. Chemical composition of 6061 aluminum alloy
Element Al Si Fe Ti Mg Zn Cr Mn
Mass fraction /% Bal. 0.5 0.7 0.15 0.9 0.25 0.08 0.15

Table 2. Main parameters of laser marking process

Table 2. Main parameters of laser marking process

Laser parameter	Method 1	Method 2
Laser parameter	Top value	First floor value	Top value
Scanning speed /（mm⋅s^-1）	100	800	100
Average rated power /W	18	12	18
Repetition rate /kHz	1000	250	1000
Scan line spacing /mm	0.003	0.04	0.003
Pulse width /ns	1	9	1

Table 3. EDS analysis of samples surface
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Table 3. EDS analysis of samples surface
Sample Mass fraction /%
C O Al
Sample a 11.3 5.2 83.5
Sample b 9.4 25.1 65
Sample c 11.6 2.3 87.2
Sample d - 42.7 55

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Zhiyong Yu, Xicheng Wei, Yao Liang, Baodong Shen. Laser Marking Process of High-Gray Two-Dimensional Code on Aluminum Alloy Surface[J]. Laser & Optoelectronics Progress, 2021, 58(21): 2114003

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Paper Information

Category: Lasers and Laser Optics

Received: Jan. 19, 2021

Accepted: Mar. 12, 2021

Published Online: Nov. 1, 2021

The Author Email: Baodong Shen (yinmabiaoshi@163.com)

DOI:10.3788/LOP202158.2114003

Topics

laser devices and laser physics

Lasers and Laser Optics

laser manufacturing

Instrumentation, Measurement and Metrology