【摘要】 为了研究大规模管板群缝激光焊接变形规律与调控技术，建立了考虑材料高温性能和力学性能参数的12 mm厚Q235多孔管板群缝模拟件，设计了由内而外对称焊接以及从上而下非对称焊接的5种路径，利用焊接工艺模拟软件InteWeld仿真研究了不同焊接的焊接路径对焊接变形的影响规律。结果表明，从上而下逐一按顺序焊接的管板焊接路径其平均变形量以及轴向变形量最小。更多还原

【Abstract】 In order to study the deformation law and control technology of the large-scale tubesheet group seam laser welding, we establish a 12 mm thick Q235 porous tubesheet group seam simulation piece considering the high temperature and mechanical performance parameters of the material, and design 5 kinds of symmetric and asymmetric welding paths. The welding process simulation software InteWeld is adopted to simulate and study the influences of different welding paths on the welding deformation. The results show that when the path is welding from top to bottom sequentially, the average and axial deformations are the smallest.更多还原