Research on the behavior of molten pool in laser deep-penetration welding
Source abstract
Abstract
This paper mainly studies the behavior of the laser deep-penetration welding melt pool. A laser deep-penetration welding melt pool model under adaptive combined heat sources was established using numerical simulation software. This model can automatically find the keyhole radius and keyhole bottom during the welding process so that all the heat source energy acts on the keyhole wall. The results show that deep and narrow keyholes are more prone to bubble formation; the free surface descends, and the melt pool flow velocity slows down as the keyhole becomes shallower, eventually resulting in a wavy weld seam; once a hump forms on the keyhole wall, there is a spontaneous tendency for the keyhole to close under the action of forces in the melt pool.
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Research context
OpenAlex topics: Welding Techniques and Residual Stresses · Advanced Welding Techniques Analysis · Additive Manufacturing Materials and Processes
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
Affiliations
China-Ukraine Belt and Road Joint Laboratory on Materials Joining and Advanced Manufacturing, China-Ukraine Institute of Welding Guangdong Academy of Sciences 1 , Guangzhou, Guangdong 510650,
State Key Laboratory of Advanced Design and Manufacturing for Vehicle Body, Hunan University 2 , Changsha, Hunan 410082,
State Key Laboratory of Advanced Processing and Recycling of Non-Ferrous Metals, Lanzhou University of Technology 3 , Lanzhou 730050,
Department of Electrothermal Processes of Material Processing, The E. O. Paton Electric Welding Institute of the National Academy of Sciences of Ukraine 4 , Kazimir Malevich Str., 11, Kiev 03680,
Funding
National Key R&D Program of China · Research projects of China · GDAS's Project Science and Technology Development · Guangdong Foundation for Basic and Applied Basic Research · GDAD's Project of Science and Technology Development
References (36)
Show source-provided references
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