摘要
焊道搭接量在较大程度上影响着基于三维熔化极气体保护焊直接成形过程的顺利进行以及成形件的精度.文中根据焊接熔滴过渡的物理特性,建立了GMAW堆焊三维成形的间隔焊道搭接量模型,在此基础上计算了平整堆焊层的相邻两道焊道的理论间隔,采用实际焊接试验对理论模型进行了验证.得到了修正的理论间隔,并计算了平整堆焊层高度;试验得到的结果与理论结果相吻合,说明模型建立的合理性,从而为焊接成形过程的自动化奠定了基础.
The lap amount of bead is critical not only for the trouble-free operation of three-dimensional welding,but also for the forming accuracy.So the interval bead lap model of the GMAW welding is established on the basis of the physical characteristics of droplet transition.Furthermore,the theoretical bead distance of flat overlaying welding layer is calculated.Actual welding test is employed for the model verification and the height of surfacing layer also is calculated.The test results agree well with the theoretical ones,which establish the foundation for the welding automation.
出处
《焊接学报》
EI
CAS
CSCD
北大核心
2011年第2期69-71,116,共3页
Transactions of The China Welding Institution
基金
国家自然科学基金资助项目(50975286
51005245)
重点实验室基金资助项目(914OC85020210OC8505)
关键词
三维堆焊成形
顺序焊
焊道搭接量
堆焊成形层
three-dimensional welding
interval welding
lap amount of bead
overlaying welding layer
