Distortion behaviour of Fillet T-Joint during In-Process Control Welding by Additional Cooling
Distortion behaviour of Fillet T-Joint during In-Process Control Welding by Additional Cooling
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DOI：
10.1007/bf03266523
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发表时间：
2006-05
影响因子：
2.1
通讯作者：
M. Mochizuki;H. Yamasaki;Shigetaka Okano;M. Toyoda
中科院分区：
文献类型：
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作者：
M. Mochizuki;H. Yamasaki;Shigetaka Okano;M. Toyoda
为了降低成本，希望控制焊接变形并在焊接过程中而不是在焊接之前或之后应用该程序。本文提出的方法是在T形角焊缝焊接过程中对焊缝金属的热段进行冷却，以控制腹板的旋转变形。采用这种方法，避免了增加腹板和翼缘之间的差距距离，从而可以继续焊接过程。考虑移动热源和焊接金属沉积，通过三维热弹塑性分析，对T形角焊缝在过程控制焊接过程中的变形行为进行了数值分析。结果表明，采用附加冷却方法可以有效地减小旋转变形，从而使焊接过程变得不可能。在适当的冷却条件下，可以焊接T形接头，而无需任何定位或约束。
It is desirable to control welding distortion and to apply this procedure during welding, rather than before or after welding in order to reduce the cost. The method suggested in this paper is to cool the hot section of weld metal during the welding of a fillet T-joint, in order to control rotational distortion in the web. Using this method, increasing the gap distance between web and flange is avoided so that it is possible to continue the welding procedure. Distortion behaviour of a fillet T-joint during in-process control welding by additional cooling is numerically analysed by the three-dimensional thermal elastic-plastic analysis considering a moving heat source with weld metal deposition. It is confirmed that the additional cooling method is effective to reduce the rotational distortion, which makes welding process impossible. Under the proper condition of cooling, it is possible to weld a T-joint without any tacking or restraint.