A study on molten pool behavior in the one pulse one drop GMAW process using computational fluid dynamics

被引：26
|
作者：
Cho, Dae-Won [1 ]
Park, Jin-Hyeong [2 ]
Moon, Hyeong-Soon [2 ]
机构：
[1] Korea Inst Machinery & Mat, Busan Machinery Res Ctr, Busan, South Korea
[2] Korea Inst Ind Technol, Precis Mfg & Control R&D Grp, 42-7 Baegyang Daero,804Beon Gil, Busan 46742, South Korea
来源：
INTERNATIONAL JOURNAL OF HEAT AND MASS TRANSFER | 2019年 / 139卷
基金：
新加坡国家研究基金会;
关键词：
One pulse one drop; Gas metal arc welding; Computational fluid dynamics; Molten pool flow; Numerical simulation; METAL TRANSFER; ARC CHARACTERISTICS; ACTIVE CONTROL; GAS; DETACHMENT;
D O I：
10.1016/j.ijheatmasstransfer.2019.05.038
中图分类号：
O414.1 [热力学];
学科分类号：
摘要：
This study conducted three-dimensional transient numerical simulations of molten pool behavior for the one pulse one drop mode in the gas metal arc welding process. A high speed camera and synchronized data acquisition system were used to capture the dynamic arc images, and the synchronized welding signals (current and voltage) of the one drop one pulse mode. The resulting waveforms and arc images were optimized with Fourier series, and then were applied to develop variable arc models, such as arc pressure, arc heat flux and electromagnetic models. This study conducted several simulation cases and compared the results with experimental characterizations, so it is possible to validate the simulation models. (C) 2019 Elsevier Ltd. All rights reserved.
引用
收藏
页码：848 / 859
页数：12
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