电焊机2024，Vol.54Issue(12)：49-55,7.DOI:10.7512/j.issn.1001-2303.2024.12.08
双丝脉冲MIG电弧与熔池传热传质数值模拟
Numerical Simulation of Heat and Mass Transfer between Double-Wire Pulsed MIG Arc and Molten Pool
摘要
Abstract
A dual-wire pulsed MIG arc model and a droplet-molten pool coupling model were established,taking into ac-count the interaction between the welding wires.The physical behavior of the arc and the heat and mass transfer of the mol-ten pool during the dual-wire pulsed MIG welding process were quantitatively analyzed,revealing the melting and heat and mass transfer mechanisms in the dual-wire welding process.The results show that the electromagnetic force existing be-tween the plasma arcs of the dual-wire pulsed MIG causes the arc to deflect and concentrate between the two welding wires,thereby increasing the stirring effect on the molten pool.The heat sources formed by the front and rear welding wires can in-crease the depth and width of the melt,and the alternating droplet falling method is conducive to the stability of the molten pool.When the droplets transition to the surface of the molten pool,their speed will surge due to the effects of surface ten-sion and gravity,causing a more intense impact effect on the molten pool.The fluidity at the front end of the molten pool is greater than that at the rear end,and the influence of droplet transition on the flow of the molten pool is the most significant,followed by the influence of surface tension.关键词
双丝焊/电弧/熔滴过渡/传热传质/流场Key words
double-wire MIG welding/welding arc/droplet transfer/heat and mass transfer/flow field分类
矿业与冶金引用本文复制引用
申孟伟,陈毅腾,梁志敏,饶宇中,闫德俊..双丝脉冲MIG电弧与熔池传热传质数值模拟[J].电焊机,2024,54(12):49-55,7.基金项目
广东省舰船先进焊接技术企业重点实验室基金(2023B1212070026) （2023B1212070026）
