| 激光填丝焊焊丝熔入行为特征 |
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| 引用本文： | 刘红兵,陶汪,陈洁,杨志斌,陈磊,占小红,李俐群.激光填丝焊焊丝熔入行为特征[J].焊接学报,2013(11):73-77. |
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| 作者姓名： | 刘红兵 陶汪 陈洁 杨志斌 陈磊 占小红 李俐群 |
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| 作者单位： | 国家商用飞机制造工程技术研究中心, 上海 200436,哈尔滨工业大学先进焊接与连接国家重点实验室, 哈尔滨 150001;哈尔滨工业大学金属精密热加工国防科技重点实验室, 哈尔滨 150001,国家商用飞机制造工程技术研究中心, 上海 200436,哈尔滨工业大学先进焊接与连接国家重点实验室, 哈尔滨 150001,国家商用飞机制造工程技术研究中心, 上海 200436,国家商用飞机制造工程技术研究中心, 上海 200436,哈尔滨工业大学先进焊接与连接国家重点实验室, 哈尔滨 150001 |
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| 基金项目： | 国家商用飞机制造工程技术研究中心创新基金资助项目(SAMC12-JS-15-009);国家自然科学基金资助项目(511-75115);上海市科技人才计划资助项目(12QB1401900) |
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| 摘 要： | 采用高速摄像技术和工艺试验相结合的手段进行铝合金光纤激光填丝焊焊丝熔入行为及工艺特性研究.分析了焊丝熔入行为及其主要影响因素,研究了送丝方式与送丝角度对焊缝成形及焊接过程稳定性的影响.结果表明,依据光丝间距的不同,焊丝熔入行为可分为3种典型特征,铺展过渡、液桥过渡和大滴过渡,其中液桥过渡最为理想;前置送丝焊丝熔化效率高,工艺窗口较宽;送丝角度影响焊丝吸收激光能量程度以及液态焊丝对液态熔池的冲击力的大小,随着送丝角度的增加焊缝背部熔宽有明显增加,而焊缝熔深基本不变.
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| 关 键 词： | 激光技术 熔入行为 高速摄像 铝合金 送丝姿态 |
| 收稿时间： | 2012/8/9 0:00:00 |
Filler wire melting dynamics during laser beam welding with filler wire |
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| LIU Hongbing,TAO Wang,CHEN Jie,YANG Zhibin,CHEN Lei,ZHAN Xiaohong and LI Liqun.Filler wire melting dynamics during laser beam welding with filler wire[J].Transactions of The China Welding Institution,2013(11):73-77. |
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| Authors: | LIU Hongbing TAO Wang CHEN Jie YANG Zhibin CHEN Lei ZHAN Xiaohong and LI Liqun |
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| Affiliation: | National Engineering Research Center for Commercial Aircraft Manufacturing, Shanghai 200436, China,State Key Laboratory of Advanced Welding and Joining, Harbin Institute of Technology, Harbin 150001, China;National Key Laboratory of Metal Precision Hot Processing, Harbin Institute of Technology, Harbin 150001, China,National Engineering Research Center for Commercial Aircraft Manufacturing, Shanghai 200436, China,State Key Laboratory of Advanced Welding and Joining, Harbin Institute of Technology, Harbin 150001, China,National Engineering Research Center for Commercial Aircraft Manufacturing, Shanghai 200436, China,National Engineering Research Center for Commercial Aircraft Manufacturing, Shanghai 200436, China and State Key Laboratory of Advanced Welding and Joining, Harbin Institute of Technology, Harbin 150001, China |
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| Abstract: | The behavior characteristics of wire melting and fiber laser beam welding process of aluminum alloys with filler wire were carried out by using high-speed camera and experimental tests.The filler wire melting behavior and its main influencing factors were analyzed.The effect of wire feeding mode and wire feeding angle on weld formation and welding process stability were also studied.The results show that the melting behavior, which mainly depends on the distance between laser incident position and filler wire,can be divided into three types:the spreading transfer,the liquid bridge transfer and the globular transfer,and the liquid bridge transfer is the ideal type.The mode of pre-wire has higher efficiency and wider process window.The level of laser energy absorption by wire and the impact force of liquid wires on the liquid weld pool are affected by the wire feeding angle.The back weld width increases obviously with increase of wire feeding angle,while the weld penetration keeps essentially invariable. |
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| Keywords: | laser technique melting dynamics highspeed camera aluminum alloys wire parameters |
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