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http://dx.doi.org/10.5781/JWJ.2016.34.5.26

Hot Wire Laser Welding of Multilayer for Narrow Gap - Analysis of Wire Melting/Transfer and Arc Formation Phenomenon by High Speed Imaging -  

Kim, Kyounghak (Dept. of Welding and Joining Science Engineering, Chosun University)
Bang, Hansur (Dept. of Welding and Joining Science Engineering, Chosun University)
Bang, Heeseon (Dept. of Welding and Joining Science Engineering, Chosun University)
Kaplan, Alexander F.H. (Dept. of Engineering Sciences and Mathematics, Lulea University of Technology)
Nasstrom, Jonas (Dept. of Engineering Sciences and Mathematics, Lulea University of Technology)
Frostevarg, Jan (Dept. of Engineering Sciences and Mathematics, Lulea University of Technology)
Publication Information
Journal of Welding and Joining / v.34, no.5, 2016 , pp. 26-32 More about this Journal
Abstract
In this study, Hot-wire laser welding (HWLW) without keyhole which deposits filler material by feeding hot wire into the process zone has been performed to increase process performance. From the analysis of High Speed Imaging (HSI), for higher voltage, the process is prone to arc formation and drop transfer, which is disagreeable transfer mode. It is necessary that arc formation and drop (globular) transfer should be avoided by lower voltage. Therefore, continuous wire melting and transfer mode is preferred when adopting this process. The HWLW technique has high potential in terms of performance, precision, robustness and controllability for thick section of narrow gap.
Keywords
Laser welding; Narrow gap; Hot wire; Multi-layer; High speed imaging (HSI);
Citations & Related Records
Times Cited By KSCI : 4  (Citation Analysis)
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