Experimental study of fiber laser underwater cutting of 20 mm thick Q235 steel plate

Wentao CHU; Qianzhe CHEN; Lianghua HAN; Lie LIU

doi:10.7510/jgjs.issn.1001-3806.2025.04.017

Laser Technology, Volume. 49, Issue 4, 590(2025)

Experimental study of fiber laser underwater cutting of 20 mm thick Q235 steel plate

Wentao CHU^1,2, Qianzhe CHEN^1,2, Lianghua HAN^1,2, and Lie LIU^1,2、*

¹Key Laboratory of Advanced Nuclear Energy Technology Design and Safety of Ministry of Education, Institute of Laser Application Innovation, University of South China, Hengyang 421001, China

²School of Mechanical Engineering, University of South China, Hengyang 421001, China

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Figures & Tables(17)

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Fig. 10. [in Chinese]

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Table 0. [in Chinese]

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Table 0. [in Chinese]

source	sum of squares/mm²	degree of free	mean square/mm²	F statistics	p value
corrected model	31561.273*	6	5260.212	15.784	0.061
intercept	804668.801	1	804668.801	2414.481	0.000
A	14828.882	2	7414.441	22.248	0.043
B	8161.669	2	4080.834	12.245	0.076
C	8570.722	2	4285.361	12.859	0.072
error	666.536	2	333.268	—	—
total	836896.610	9	—	—	—
corrected total	32227.809	8	—	—	—

Table 0. [in Chinese]
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Table 0. [in Chinese]
C Si Mn P S Cr Ni Cu
0.208 0.248 0.508 0.017 0.006 0.026 0.010 0.008

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Table 0. [in Chinese]

source	sum of squares/mm²	degree of free	mean square/mm²	Ftatistics	p value
corrected model	0.718**	6	0.120	11.051	0.085
intercept	422.303	1	422.303	38981.769	0.000
A	0.002	2	0.001	0.077	0.929
B	0.612	2	0.306	28.231	0.034
C	0.105	2	0.052	4.846	0.171
error	0.022	2	0.011	—	—
total	423.043	9	—	—	—
corrected total	0.740	8	—	—	—

Table 0. [in Chinese]

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Table 0. [in Chinese]

specimen	gas pressure/MPa	laser power/kW	cutting speed/(mm·s⁻¹)	roughness/μm	dross length/mm
1^#	1.0	2.5	1.0	315.6	6.60
2^#	1.0	3.0	1.0	257.0	7.50
3^#	1.0	3.5	1.0	438.8	9.25
4^#	1.0	4.0	1.0	440.4	7.70
5^#	1.0	4.5	1.0	447.2	6.20
6^#	1.0	4.5	1.5	319.4	6.80
7^#	1.0	4.5	2.0	341.6	7.25
8^#	1.0	4.5	2.5	359.6	6.80
9^#	1.0	4.5	3.0	219.4	6.20
10^#	0.6	4.5	3.0	248.0	7.40
11^#	0.8	4.5	3.0	232.8	6.65
12^#	1.2	4.5	3.0	534.2	6.60
13^#	1.4	4.5	3.0	840.4	6.80

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Table 0. [in Chinese]

specimen	A	B	C	roughness/μm	dross length/mm
specimen	gas pressure/MPa	laser power/kW	cutting speed/(mm·s⁻¹)	roughness/μm	dross length/mm
1^#	1.2	5.0	2.5	345.80	6.45
2^#	0.8	4.5	3.5	247.00	7.15
3^#	1.2	4.0	3.5	289.60	7.15
4^#	0.8	5.0	3.0	316.50	6.30
5^#	1.0	5.0	3.5	254.60	6.70
6^#	1.2	4.5	3.0	430.00	6.95
7^#	1.0	4.5	2.5	319.40	6.90
8^#	1.0	4.0	3.0	270.20	7.00
9^#	0.8	4.0	2.5	218.00	7.05

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Table 0. [in Chinese]
level A B C
gas pressure/MPa laser power/kW cutting speed/(mm·s⁻¹)
1 0.8 4.0 2.5
2 1.0 4.5 3.0
3 1.2 5.0 3.5

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Wentao CHU, Qianzhe CHEN, Lianghua HAN, Lie LIU. Experimental study of fiber laser underwater cutting of 20 mm thick Q235 steel plate[J]. Laser Technology, 2025, 49(4): 590

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Paper Information

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Received: Aug. 21, 2024

Accepted: --

Published Online: Aug. 28, 2025

The Author Email: Lie LIU (Reseek206@163.com)

DOI:10.7510/jgjs.issn.1001-3806.2025.04.017

Topics

laser devices and laser physics

Lasers and Laser Optics

Laser physics

laser manufacturing

Instrumentation, Measurement and Metrology