Results 21 to 30 of about 1,274,166 (252)

Characterizations of welding mode transformation process during 1-μm and 10-μm laser welding

AIP Advances, 2020
To reveal the enhancing energy coupling effect of plasma, a comparison of the welding mode transformation process during 1-µm and 10-µm laser welding of aluminum alloys is carried out through experimental observation and theoretical analysis.
S. H. Guo, J. L. Zou, R. S. Xiao
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Multi-stage keyhole evolution in fiber laser welding: An experimental study and theoretical analysis

Results in Physics, 2021
Laser welding with high beam intensity generates a metal vapor, which partially displaces the metal melt, forming a narrow keyhole-shaped fusion zone. This study conducted theoretical analysis of the keyhole formation processes within fiber laser welding,
Shihui Guo, Jianglin Zou, Jiejie Xu, Qiang Wu, Rongshi Xiao   +4 more
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Laser Welding under Vacuum: A Review

Applied Sciences, 2017
Laser welding has been widely used in various industry fields. In order to further alter and broaden its applicability, a novel technology of laser welding under vacuum is introduced.
Meng Jiang, Wang Tao, Yanbin Chen
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Research on morphology, porosity, mechanical properties of 7075 aluminum alloy repaired by arc welding and laser shock forging

Heliyon, 2023
There are many problems in the arc welding repair of aluminum alloy parts, such as excessive pores, coarse grains, and low hardness. Introducing external energy excitation is an effective solution.
Zhichao Chen, Yongkang Zhang, Yuanqing Chi, Junfeng Gou, Chaohui Lin, Yuqi Lin   +5 more
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Research progress of laser welding process dynamic monitoring technology based on plasma characteristics signal

Journal of Hebei University of Science and Technology, 2017
During the high-power laser welding process, plasmas are induced by the evaporation of metal under laser radiation, which can affect the coupling of laser energy and the workpiece, and ultimately impact on the reliability of laser welding quality and ...
Teng WANG, Juequan CHEN, Xiaoli JIN
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Possible explanations for different surface quality in laser cutting with 1 micron and 10 microns beams [PDF]

, 2012
In laser　cutting　of　thick　steel　sheets,　quality　difference　is　observed　between　cut　surfaces　obtained　with 1 micron and 10 micron laser beams. This paper investigates physical mechanisms for this interesting and important problem of the wavelength ...
Remy Fabbro, Koji Hirano, FABBRO, Rémy, HIRANO, Koji   +3 more
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Study on the Physical Characteristics of Plasma and Its Relationship with Pore Formation during Laser-Metal Active Gas Arc Hybrid Welding of 42CrMo Steel

Photonics, 2023
The automobile industry puts forward higher requirements for the design and manufacture of steel pistons. However, the welding of 42CrMo steel pistons still has unsolved technical problems, especially welding defects that cannot be directly detected ...
Yan Zhang, Hao Li, Xin Mi, Hongzhi Zhou, Mingjun Zhang, Zhongmin Wan, Liyuan Tang   +6 more
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A Study on the Influences of Welding Position on the Keyhole and Molten Pool Behavior in Laser Welding of a Titanium Alloy

Metals, 2019
Various welding positions need be used in laser welding of structures with complex configurations. Therefore, it is necessary to gain knowledge of how the welding positions can influence the keyhole and weld pool behavior in order to better control the ...
Baohua Chang, Zhang Yuan, Hao Cheng, Haigang Li, Dong Du, Jiguo Shan   +5 more
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Effects of Sc on laser hot-wire welding performance of 7075 aluminum alloy

Materials Research Express, 2020
In order to clarify the effects of Sc modification on laser hot-wire welding performance of 7075 high strength aluminum alloys, the changing rules of weld formation, microstructure, element loss, mechanical performances and pores of weld joints were ...
Shichun Li, Wei Xu, Gang Xiao, Zhenhong Zhou, Fei Su, Jianghua Feng   +5 more
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Effect of WAAM Process Parameters on Structure and Mechanical Properties of Low-Carbon Steel Thin Walls

Journal of Manufacturing and Materials Processing
Wire Arc Additive Manufacturing (WAAM) has emerged as a promising additive manufacturing technique due to its high deposition rate and low material cost.
Margarita Klimova, Konstantin Nasonovskiy, Dmitrii Mukin, Ilya Astakhov, Artem Voropaev, Alexey Evstifeev, Alexey Silkin, Rudolf Korsmik, Nikita Stepanov   +8 more
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