一般CO_2焊接飞溅损失均在4—6％左右。因此在船体焊接时,飞溅物在很短时间内就堵塞了喷嘴孔,这不仅影响焊接质量,还大大降低焊接生产率。减少飞溅堵喷嘴的途径一是用富氩焊接,但成本高,不拟采用:二是改变喷嘴结构,以保证飞溅物在较长焊缝上不堵喷嘴。我们工作的重点是解决喷嘴形式。 General CO_2 welding splash loss is about 4-6%. Therefore, when the hull is welded, the spatter blocks the nozzle hole in a short time, which not only affects the welding quality but also greatly reduces the welding productivity. First, the way to reduce splashing nozzles is to use argon-rich welding, but the cost is high. It is not intended to be adopted. Second, to change the structure of the nozzle to ensure that the spatter does not block the nozzle on longer welds. The focus of our work is to solve the nozzle form.