Table 3: Influence of BOF on the width of upper/down fillet weld leg and welding process (welding parameters:  KW, υ = 4 m/min).

BOF (mm)Upper fillet weld leg width (mm)Down fillet weld leg width (mm)Ration of upper/down weld leg widthWelding process

01.552.290.67Unstable
0.52.282.251.01Stable
1.02.031.501.35Stable