通过实验得到空气中和水中同样焊接工艺参数下焊接焊缝的熔宽和熔深,对比两者的不同,说明水会对焊接电弧和电弧能量产生影响。在同样的焊接工艺参数下,采用水下湿法进行焊接得到的焊缝熔宽更窄,熔深更深。随后又通过模拟得到4种焊接工艺参数条件下的焊缝尺寸数据,并与实验结果进行了对比,说明模拟方法能够较为准确的确定其焊缝形状尺寸。 The experimental results show that the weld width and penetration depth are the same in the air and in the water. Comparing the two shows that water will affect the welding arc and arc energy. Under the same welding process parameters, the welding seam obtained by underwater wet welding has a narrower melting width and a deeper penetration. Then, the welding seam size data of four kinds of welding parameters were obtained through simulation. Compared with the experimental results, the simulation method can determine the size and shape of the welding seam more accurately.