Dynamic Observation of High Speed Laser-Arc Combination Welding of Thick Steel Plates(Physics, Processes, Instruments & Measurements)
Dynamic Observation of High Speed Laser-Arc Combination Welding of Thick Steel Plates(Physics, Processes, Instruments & Measurements)
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厚钢板高速激光电弧复合焊动态观测（物理、工艺、仪器）
DOI：
10.2351/1.5059717
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发表时间：
1997
期刊：
影响因子：
--
通讯作者：
Yoshiaki Tsuchitani
中科院分区：
文献类型：
--
作者：
N. Abe;Y. Kunugita;M. Hayashi;Yoshiaki Tsuchitani
前导路径激光-电弧组合焊接(LPLAC)是由激光-电弧组合焊接组成的，具有一条激光光束的前导路径，比传统的激光-电弧组合焊接具有更深的熔深。与传统的窄V坡口弧焊相比，它还可以实现更快的焊接速度和更稳定的焊接。为了解释这种更高效率的原因，用500帧/秒的高速摄像机观察了激光等离子体、弧等离子体和熔融金属在LPLAC焊接过程中的行为。研究发现，激光等离子体将电弧稳定在激光与电弧之间的最佳距离，这是该方法具有很高的速度和深度的原因；前导路径激光-电弧组合焊(LPLAC)由激光-电弧组合焊接组成，具有一条激光光束的前导路径，比传统的激光-电弧组合焊具有更深的熔深。与传统的窄V坡口弧焊相比，它还可以实现更快的焊接速度和更稳定的焊接。为了解释这种更高效率的原因，用500帧/秒的高速摄像机观察了激光等离子体、弧等离子体和熔融金属在LPLAC焊接过程中的行为。研究发现，激光等离子体将电弧稳定在激光与电弧之间的最佳距离，这是该方法具有很高的速度和深度的原因。
Leading Path Laser-Arc Combination (LPLAC) welding, which consists of laser-arc combination welding with a leading path for the laser beam, enables much deeper penetration than conventional laser-arc combination welding. It also enables higher speed and more stable welding compared with the conventional arc welding with a narrow V groove. To elucidate the reasons for this greater effectiveness, the behavior of the laser plasma, arc plasma, and the molten metal were observed during LPLAC welding using a high-speed video camera operating at 500 frames per second. It was found that the laser plasma stabilized the arc at an optimal distance between the laser and the arc, accounting for the very high speed and deep penetration of this method.Leading Path Laser-Arc Combination (LPLAC) welding, which consists of laser-arc combination welding with a leading path for the laser beam, enables much deeper penetration than conventional laser-arc combination welding. It also enables higher speed and more stable welding compared with the conventional arc welding with a narrow V groove. To elucidate the reasons for this greater effectiveness, the behavior of the laser plasma, arc plasma, and the molten metal were observed during LPLAC welding using a high-speed video camera operating at 500 frames per second. It was found that the laser plasma stabilized the arc at an optimal distance between the laser and the arc, accounting for the very high speed and deep penetration of this method.