摘要
通过工艺试验,研究了双丝共熔池窄间隙焊焊丝与侧壁间距、双丝前后间距和双丝倾角3个工艺参数对焊缝成形的影响。结果表明,焊丝与侧壁间距减小,侧壁熔深和表面下凹增加;沿焊接方向双丝倾角为零时,侧壁熔深和表面下凹达到最大值;而在电弧和熔池热量的共同作用下,双丝前后间距增大,侧壁熔深和表面下凹先增大,后减小,在5~10 mm内达到最大值。在不形成指状熔深时,这3个参数对焊缝熔深影响不大。采用I形坡口会出现底部未熔合,调节这3个参数不能消除未熔合现象。
The influences of three parameters which are space between wire and edge,space between two wires and angle between two wires on weld appearance were studied in double-wire narrow gap welding with one pool by procedure experiments.The results show that the increase of space between wire and edge can make sidewall penetration and saucer shape of weld surface increase. When the arrangement of wires became parallel,sidewall penetration and saucer shape of weld surface increased to the maximum value.When space b...
出处
《焊接学报》
EI
CAS
CSCD
北大核心
2008年第6期81-84,117,共5页
Transactions of The China Welding Institution
关键词
窄间隙焊
双丝焊
焊缝成形
narrow gap welding
twin-wire welding
weld formation
