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首页> 外文期刊>International journal of steel structures >On the prediction of effect of direction of welding on bead geometry and residual deformation of double-sided fillet welds
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On the prediction of effect of direction of welding on bead geometry and residual deformation of double-sided fillet welds

机译：预测焊接方向对双面角焊缝焊缝几何形状和残余变形的影响

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摘要

The present study describes how the effect of direction of welding is useful to minimize distortion in submerged arc welded double-sided fillet joints. In present work, angular distortion of 12 mm thick double-sided fillet welds was measured for same direction and reverse direction welding. It has been observed that the maximum magnitude of the angular distortion for reverse direction fillet welding is lower. Thermal history in horizontal and vertical plate of fillet welds was also measured for both same direction and reverse direction welding. After welding, the fillet welds were sectioned, polished and etched to measure the effect of direction of welding on weld bead geometry. To predict the temperature distribution and thermal history, a finite element (FE) elasto-plastic thermo-mechanical model has been developed for submerged arc welded double-sided fillet welds by using moving distributed heat source. The three-dimensional FE thermal model was verified by comparing peak temperature obtained with experimental values. The model results matched fairly well with experimental results with a variation of 6 percent for sample 1 and 7.5 percent for sample 2 for the maximum values of distortion, and a variation of 2-8 percent for peak temperatures in horizontal plate and 9 percent in web plate.
机译：本研究描述了焊接方向的影响如何最大程度地减小埋弧焊双面角焊缝的变形。在目前的工作中，对于相同方向和相反方向的焊接，测量了12 mm厚的双面角焊缝的角度变形。已经观察到，用于反向角焊的角度变形的最大幅度较低。对于相同方向和相反方向的焊接，还测量了角焊缝水平和垂直板上的热历史。焊接后，对角焊缝进行切片，抛光和蚀刻，以测量焊接方向对焊缝几何形状的影响。为了预测温度分布和热历史，通过使用移动分布热源，为埋弧焊双面角焊缝建立了有限元（FE）弹塑性热力学模型。通过将获得的峰值温度与实验值进行比较，验证了三维有限元热模型。模型结果与实验结果相当吻合，最大变形值样品1的变化为6％，样品2的变化为7.5％，水平板的峰值温度变化为2-8％，卷材的峰值温度变化为9％。盘子。

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