能量比对双光束激光焊接特性的影响
发布时间：2019-03-06 11:29
【摘要】：系统研究了双光束焊接过程中能量比对焊缝成形以及能量利用率的影响,采用高速摄像技术实时观察了不同能量比下的熔池行为,分析了能量比对双光束焊接特性的影响机制。结果表明,随着能量比增大,双光束焊缝熔深先减小后增大,熔宽变化规律与之相反,并在能量比为50/50时获得最小熔深和最大熔宽。不同能量比下能量利用率差别较大,能量比为20/80和50/50时分别获得最大值32.7%和最小值27.8%。熔池尺寸同样受能量比的影响,随着能量比增大,熔池长度先增大后减小,而宽度一直减小。能量比对双光束焊接特性的影响主要归因于焊接过程中匙孔状态以及熔池流动方式的改变。
[Abstract]:The effect of energy ratio on weld forming and energy utilization in the process of two-beam welding is systematically studied. The weld pool behavior under different energy ratios is observed in real-time by high-speed camera technology, and the influence mechanism of energy ratio on the welding characteristics of two-beam welding is analyzed. The results show that with the increase of energy ratio, the penetration of two beam welds decreases first and then increases, and the variation of weld width is opposite. The minimum penetration depth and maximum weld width are obtained when the energy ratio is 50 / 50. When the energy ratio is 20 渭 80 and 50 / 50, the maximum and minimum values are 32.7% and 27.8%, respectively. The size of the molten pool is also affected by the energy ratio. With the increase of the energy ratio, the length of the pool increases first and then decreases, but the width of the weld pool decreases all the time. The effect of energy ratio on the characteristics of two-beam welding is mainly due to the change of keyhole state and molten pool flow mode during welding.
【作者单位】： 哈尔滨工业大学先进焊接与连接国家重点实验室;
【基金】：国家重点研发计划(2016YFB1102100)
【分类号】：TG456.7
本文编号：2435484
[Abstract]:The effect of energy ratio on weld forming and energy utilization in the process of two-beam welding is systematically studied. The weld pool behavior under different energy ratios is observed in real-time by high-speed camera technology, and the influence mechanism of energy ratio on the welding characteristics of two-beam welding is analyzed. The results show that with the increase of energy ratio, the penetration of two beam welds decreases first and then increases, and the variation of weld width is opposite. The minimum penetration depth and maximum weld width are obtained when the energy ratio is 50 / 50. When the energy ratio is 20 渭 80 and 50 / 50, the maximum and minimum values are 32.7% and 27.8%, respectively. The size of the molten pool is also affected by the energy ratio. With the increase of the energy ratio, the length of the pool increases first and then decreases, but the width of the weld pool decreases all the time. The effect of energy ratio on the characteristics of two-beam welding is mainly due to the change of keyhole state and molten pool flow mode during welding.
【作者单位】： 哈尔滨工业大学先进焊接与连接国家重点实验室;
【基金】：国家重点研发计划(2016YFB1102100)
【分类号】：TG456.7
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