利用该模型模拟了单道MAG焊接过程，获得了焊接温度场，获得了不同位置的焊接热循环曲线，以便与实测结果对比。另外，通过模拟的温度场，还获得了HAZ各微区的热循环曲线。

The model was used to simulate the single-pass MAG welding process, the welding temperature field was obtained, and the welding thermal cycle curves at different positions were obtained for comparison with the measured results. In addition, through the simulated temperature field, the thermal cycle curve of each micro-zone of the HAZ was also obtained.