Analysis of process characteristics of high power laser welding based on high-throughput test method

YANG Yicheng; LENG Bing; HUANG Ruisheng; NIE Xin; MA Yiming; WU Pengbo

doi:10.12073/j.hjxb.20210825002

TRANSACTIONS OF THE CHINA WELDING INSTITUTION > 2021 > 42(11): 77-82. > DOI: 10.12073/j.hjxb.20210825002

YANG Yicheng, LENG Bing, HUANG Ruisheng, NIE Xin, MA Yiming, WU Pengbo. Analysis of process characteristics of high power laser welding based on high-throughput test method[J]. TRANSACTIONS OF THE CHINA WELDING INSTITUTION, 2021, 42(11): 77-82. DOI: 10.12073/j.hjxb.20210825002

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Analysis of process characteristics of high power laser welding based on high-throughput test method

1.
Harbin Welding Institute Limited Company, Harbin, 150028, China
2.
China Academy of Machinery Science and Technology Group Co., Ltd., Beijing, 100044, China
3.
University of Science and Technology Beijing, Beijing, 100083, China

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Received Date: August 24, 2021
Available Online: December 27, 2021

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Abstract

Abstract

To more efficiently and accurately obtain the influence law of process parameters on the process characteristics of high-power laser welding, a new high-throughput laser welding test method is proposed. With the help of high-speed photography and image processing technology, the photoinduced plume and spatter in the test process are statistically analyzed. The results show that the increase of laser power increases the number and fluctuation of spatter in the welding process. Correspondingly, the surface forming quality becomes worse, and the internal crack increases after welding. For 10000-watt class laser welding, compared with positive defocus welding, the weld formation in negative defocus welding is better, the amount of spatter in the welding process can be effectively restrained, and the sawtooth melting width and penetration fluctuation can be significantly improved. The actual welding results are highly consistent with the test results of "sawtooth plate," which shows that the new method of high-throughput laser welding characteristics test can truly and quickly obtain the influence law of continuous change of process parameters on the welding process. It is a practical new method to study the characteristics of laser welding.
- high throughput,
- testing technology,
- high-power laser welding,
- process characteristics

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References

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Analysis of process characteristics of high power laser welding based on high-throughput test method