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手工单面焊双面成型一般容易在接头时发生熔池缩孔、气泡、夹渣、反面成型低凹或焊不透、未熔合等缺陷。多数缩孔产生的原因是由熔池冷却温度不一致所造成,而造成冷却速度不一致的原因又是由熔池不饱满所引起的,传统的熄弧方法一般都
Manual single-sided welding double-sided molding is generally easy to occur in the joint crater shrinking, bubbles, slag, the negative forming concave or welding penetration, fusion and other defects. Most of the shrinkage hole is caused by the pool temperature caused by inconsistencies, and caused the cooling rate of inconsistency is due to the pool is not full caused by the traditional method of extinction are generally