Influence of welding parameters on the formation of U-rib fillet welds in single-sided welding of steel bridge panels

IF 1.8 4区 物理与天体物理 Q3 PHYSICS, APPLIED
Xiao Nie, Ruifeng Li, Xiaoqiang Zhang, Taotao Li, Zhigang Liu, Liang Yang, Zheyan Xue
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Abstract

It is difficult to reach the requirement of 80% U-rib weld penetration in the practical application of single-sided welding of steel bridge panels. Meanwhile, full penetration has to be avoided. In this study, efforts are made in order to achieve fillet welds with 80% and above penetration consistently. The effect of welding parameters on the formation of single-sided U-rib fillet welds is investigated. This work has revealed that U-rib fillet weld penetration is presenting an upward trend as the welding current increases under specific welding conditions, and full penetration was observed at the current of 325 A. With the increasing distance between the filler wire and the root of the weld, the U-rib penetration reduces. As the torch angle increases during ship position welding, the U-rib penetration will first increase and then decrease. The weld formation of flat position welding is more stable and the U-rib weld penetration has been significantly improved. The optimum U-rib weld with penetration of 84.8% is achieved under the conditions of flat position welding with 285 A welding current, 44 torch angle, and 2mm distance between the wire and the root.

焊接参数对钢桥面板单面焊接中 U 肋角焊缝形成的影响
在钢桥板单面焊接的实际应用中,很难达到 80% 的 U 形肋焊透要求。同时,必须避免全焊透。在本研究中,我们努力使角焊缝的熔透率稳定在 80% 及以上。研究了焊接参数对单面 U 肋角焊缝形成的影响。研究发现,在特定的焊接条件下,随着焊接电流的增加,U 形肋角焊缝的熔透率呈上升趋势,在电流为 325 A 时可观察到全熔透。在船位焊接过程中,随着焊枪角度的增大,U 形肋的熔透会先增大后减小。平位置焊接的焊缝成形更稳定,U 形肋焊缝的熔透也明显提高。在焊接电流为 285 A、焊枪角度为 44∘、焊丝与根部间距为 2mm 的平位置焊接条件下,U 形肋焊缝的最佳熔透率为 84.8%。
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来源期刊
Modern Physics Letters B
Modern Physics Letters B 物理-物理:凝聚态物理
CiteScore
3.70
自引率
10.50%
发文量
235
审稿时长
5.9 months
期刊介绍: MPLB opens a channel for the fast circulation of important and useful research findings in Condensed Matter Physics, Statistical Physics, as well as Atomic, Molecular and Optical Physics. A strong emphasis is placed on topics of current interest, such as cold atoms and molecules, new topological materials and phases, and novel low-dimensional materials. The journal also contains a Brief Reviews section with the purpose of publishing short reports on the latest experimental findings and urgent new theoretical developments.
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