laser beam
Recently Published Documents





2022 ◽  
Vol 147 ◽  
pp. 107651
Jianglin Zou ◽  
Baoqi Zhu ◽  
Gaolei Zhang ◽  
Shihui Guo ◽  
Rongshi Xiao

2022 ◽  
Vol 146 ◽  
pp. 107561
Tianran Zheng ◽  
Hongjie Liu ◽  
Fang Wang ◽  
Yong Xiang ◽  
Ye Tian ◽  

2022 ◽  
Vol 146 ◽  
pp. 107533
Jiahao Zhang ◽  
Jiayi Zhao ◽  
Ke Hu ◽  
Qiyu Gao ◽  
Xiaohong Zhan

Ömer Üstündağ ◽  
Nasim Bakir ◽  
Sergej Gook ◽  
Andrey Gumenyuk ◽  
Michael Rethmeier

AbstractIt is already known that the laser beam welding (LBW) or hybrid laser-arc welding (HLAW) processes are sensitive to manufacturing tolerances such as gaps and misalignment of the edges, especially at welding of thick-walled steels due to its narrow beam diameter. Therefore, the joining parts preferably have to be milled. The study deals with the influence of the edge quality, the gap and the misalignment of edges on the weld seam quality of hybrid laser-arc welded 20-mm-thick structural steel plates which were prepared by laser and plasma cutting. Single-pass welds were conducted in butt joint configuration. An AC magnet was used as a contactless backing. It was positioned under the workpiece during the welding process to prevent sagging. The profile of the edges and the gap between the workpieces were measured before welding by a profile scanner or a digital camera, respectively. With a laser beam power of just 13.7 kW, the single-pass welds could be performed. A gap bridgeability up to 1 mm at laser-cut and 2 mm at plasma-cut samples could be reached respectively. Furthermore, a misalignment of the edges up to 2 mm could be welded in a single pass. The new findings may eliminate the need for cost and time-consuming preparation of the edges.

Sign in / Sign up

Export Citation Format

Share Document