邱元棋, 薛诚, 熊震宇, 单俊. 铝合金复合焊旁路焊接参数对焊缝成形的影响[J]. 南昌航空大学学报(自然科学版), 2014, 28(1): 48-52. DOI: 10.3969/j.issn.1001-4926.2014.01.009
引用本文: 邱元棋, 薛诚, 熊震宇, 单俊. 铝合金复合焊旁路焊接参数对焊缝成形的影响[J]. 南昌航空大学学报(自然科学版), 2014, 28(1): 48-52. DOI: 10.3969/j.issn.1001-4926.2014.01.009
QIU Yuan-qi, XUE Cheng, XIONG Zhen-yu, SHANG Jun. Influence of Bypass Parameters in Hybrid Welding on Aluminum Alloy[J]. Journal of nanchang hangkong university(Natural science edition), 2014, 28(1): 48-52. DOI: 10.3969/j.issn.1001-4926.2014.01.009
Citation: QIU Yuan-qi, XUE Cheng, XIONG Zhen-yu, SHANG Jun. Influence of Bypass Parameters in Hybrid Welding on Aluminum Alloy[J]. Journal of nanchang hangkong university(Natural science edition), 2014, 28(1): 48-52. DOI: 10.3969/j.issn.1001-4926.2014.01.009

铝合金复合焊旁路焊接参数对焊缝成形的影响

Influence of Bypass Parameters in Hybrid Welding on Aluminum Alloy

  • 摘要: 由于铝合金线膨胀系数大,热导率高,焊接时热输入向母材一侧快速流动,在较大的热输入情况下容易使产生熔透不均匀、焊接变形、塌陷等问题。因此,本研究通过TIG-MIG复合焊试验,在改变焊接工艺参数的条件下,研究了旁路脉冲TIG中峰值电流、脉冲频率以及脉宽占空比分别对焊缝熔宽、余高和熔深的影响,并获得了参数阈值,为实现铝合金控制热输入的高效焊接提供了参考。

     

    Abstract: Due to the large linear expansion coefficient and high thermal conductivity of aluminum alloy, the heat input would rapidly flow to the base material during welding, especially in the case of the large heat input, which causes the problem of uneven welding penetration, welding deformation, collapse and so on. Therefore, under the conditions of changing welding parameters, this study researched the relationship between bypass in the pulse TIG peak current, pulse frequency, pulse width ratio and weld width duty ratio, weld residual high, depth of molten by using MIG-TIG hybrid welding test. And the threshold value of parameters are obtained, which provide some reference to achieve efficient control of heat input in welding aluminum alloy.

     

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