为提高船体旋转电弧焊接自动化的焊接质量，首先利用回归分析法分析旋转电弧焊接熔宽、熔深、余高与坡口上沿间距、旋转频率、旋转直径、导电嘴到工件的距离、焊接速度等工艺参数之间的关系；其次通过正交试验的焊接试样测量焊缝几何尺寸，采用回归分析的数学方法建立预测模型；再次根据焊缝几何尺寸的数学模型计算得出焊接参数的灵敏度，通过对工艺参数进行灵敏度分析，预测焊接工艺参数的改变导致焊缝几何尺寸的变化趋势。最终通过调整旋转电弧焊接工艺参数，获得良好的焊缝成形，提高了船体自动焊接质量。
Toenhance the welding quality of rotary arc welding on the ship′s hull, a correlation between melt width, melt depth, residual height and process parameters such as groove spac, rotation frequency, rotation diameter, distance from conductive nozzle to workpiece, and welding speed must be examined. Secondly, the geometric size of the weld is measured by orthogonal test, and the prediction model is established by mathematical method of regression analysis.Calculating the sensitivity of welding parameters based on a mathematical model of geometric size is thirdly done. Through analysis of process parameters, one can forecast the alteration trend of these parameters. Consequently, by altering the rotary arc′s welding process parameters, optimal weld formation can be achieved to enhance the hull′s automatic welding quality.
2024,46(22): 75-80 收稿日期：2024-3-8
DOI：10.3404/j.issn.1672-7649.2024.22.013
分类号：U671
基金项目：广东白云学院重点科研项目（2022BYKYZ01）
作者简介：俞国庆(1966-),男,博士,副教授,研究方向为自动控制技术
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