【作者】 郑启光； 辜建辉； 王涛； 王忠柯； 陶星之； 段爱琴；

【Author】 Zheng Qiguang, Gu Jianhui, Wang Tao, Wang Zhongke, Tao Xingzhi (National Laboratory of Laser Technology, HUST, Wuhan, 430074) Duan Aiqin (High Energy Beam Processing Laboratory of National Defense)

【机构】 华中理工大学激光技术国家重点实验室； 高能束流动加工技术国防科技重点实验室；

【摘要】 分析了激光深熔焊接的小孔机制的数学模型。研究了焊接熔池的稳定性与金属蒸气压的关系及金属蒸气压与等离子体的关系。着重研究了激光焊接工艺参数(包括激光模式、功率、聚焦条件、焊接速度和辅助吹气)对焊接熔池行为的影响,最后,还研究了熔池行为与焊缝组织结构和缺陷(如气孔、裂纹等)的关系。更多还原

【Abstract】 In this paper, a mathematical model of keyhole mechanism of laser deep welding has been analyzed. We studied the relationship of the stability of weld pool with metallic vapor pressure and the relationship of metallic vapor with plasma. The effect of laser wdd parameters(including laser mode, laser power, focusing condition, welding speed and assistant gas etc.)on weld pool behavior have been investigated in detail. Finally, we also have analyzed the weld pool behavior related weld structure and defects(such as crack and porosity etc.).更多还原