Compared with Offset Plasma-MIG.Welding, the increase of plasma current influence more on behavior of head penetration than weld joint width when using Coaxial Plasma-MIG welding.

• 与偏置式等离子-MIG焊接低碳钢相比，用同轴等离子-MIG焊接铝合金时等离子电流的增加对焊缝影响更大，而对熔宽的影响相对较小；