In this paper, an additional filler wire with opposite polarity was inserted in tandem flux cored arc welding process to increase the welding speed and deposition rate. In this hybrid welding, the optimisation of welding parameters is required to improve the bead geometry which directly indicates the welding quality. However, the correlation between the parameters and the bead geometry is hard to identify, so the process parameters are usually selected intuitively by the experienced engineers. Therefore, welding process modelling is constructed with the Gaussian process regression model, and parameter optimisation is performed with sequential quadratic programming optimisation algorithm. The proposed modelling optimisation process is verified by performing the welding experiment using the parameters that are optimised by the proposed process.

中文翻译：

---

使用高斯过程回归优化混合串联金属活性气体焊接

在本文中，在串联药芯电弧焊过程中插入了一根具有相反极性的额外填充焊丝，以提高焊接速度和熔敷率。在这种复合焊接中，需要优化焊接参数以改善直接指示焊接质量的焊道几何形状。然而，参数与焊道几何形状之间的相关性很难确定，因此工艺参数通常由经验丰富的工程师直观地选择。因此，焊接过程建模采用高斯过程回归模型构建，参数优化采用顺序二次规划优化算法。通过使用由所提出的过程优化的参数执行焊接实验来验证所提出的建模优化过程。