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首页> 外文期刊>Journal of Materials Engineering and Performance >Improvement of Weld Characteristics by Laser-Arc Double-Sided Welding Compared to Single Arc Welding
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Improvement of Weld Characteristics by Laser-Arc Double-Sided Welding Compared to Single Arc Welding

机译：与单弧焊接相比，激光弧双面焊接改善了焊接性能

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摘要

The single arc welding and laser-arc double-sided welding (LADSW) processes are investigated by virtue of test welds. The impacts of the laser beam during the LADSW process on the weld characteristics are studied from weld geometry, crystal morphology, and the mechanical properties of the joints. Compared with the single arc welding, the LADSW process improves the energy density and reduces the range of arc action, which together leads to a doubling of weld penetration depth. When penetrated by the laser beam, the liquid metal of the arc welding pool experiences severe fluctuations, leading to a finer grain size in the range of 17-26 mu m in the LADSW weld, a reduction of nearly 63% compared to the grains in the single arc weld. The tensile strength and elongation-to-failure of the LADSW weld were increased by nearly 10 and 100% over the single arc welding, respectively.
机译：借助测试焊缝研究了单弧焊和激光电弧双面焊（LADSW）工艺。从焊缝几何形状，晶体形态和接头的机械性能研究了LADSW过程中激光束对焊缝特性的影响。与单弧焊相比，LADSW工艺提高了能量密度并减小了电弧作用的范围，这共同导致焊缝熔深增加了一倍。当被激光束穿透时，电弧焊熔池中的液态金属会发生剧烈波动，从而导致LADSW焊缝中的晶粒尺寸更细，在17-26μm的范围内，与之相比减少了63％。单弧焊。与单弧焊相比，LADSW焊缝的拉伸强度和断裂伸长率分别提高了近10％和100％。

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