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关键词
Abstract
With advantages of low heat input, high feeding efficiency and low penetration ratio, laser hot wire welding is fit for surfacing and joining thick plate. How to obtain the stable wire transfer is the key problem for laser hot wire welding. High speed imaging is used to observe wire transfer behavior under different welding parameters, which are divided into four kinds: drop transfer, fusing transfer, continuous transfer and wire hit transfer. The continuous transfer is the stable wire transfer and it is the assurance of good weld formation. The differences among the four wire transfer kinds show that the different wire fusion positions are decided by the wire heat. Therefore, the control principles to obtain the stable wire transfer are that wire fusion heat is larger than the resistance heat, and smaller than the total of the resistance heat and the conduct heat from the molten pool to the wire. The temperature of the wire outside the molten pool is calculated. It is found that it is beneficial to obtain the stable wire transfer when the wire temperature is close to the wire fusion point.
补充资料
中图分类号：TG456.7
DOI：10.3788/cjl201441.0403008
所属栏目：激光制造
责任编辑：宋梅梅 信息反馈
基金项目：国家自然科学基金(51005125)、国家“973”计划(2011CB013404)
收稿日期：2013-09-05
修改稿日期：2013-11-24
网络出版日期：--
作者单位 点击查看
郑世卿：清华大学机械工程系, 北京 100084
温鹏：清华大学机械工程系, 北京 100084先进成形制造教育部重点实验室, 北京 100084
单际国：清华大学机械工程系, 北京 100084先进成形制造教育部重点实验室, 北京 100084
联系人作者：郑世卿(tangss2@163.com)
备注：郑世卿(1985—)，交警扣押摩托车出售，3万元内街车，世界公路摩托赛车视频，男，进口摩托车哪里买，摩托跑车视频大全视频，2万左右的重机车，赛摩比赛视频大全，豪爵铃木极客飒155，2万元左右的摩托车，博士研究生，二手摩托车越野车，十大摩托跑车排行榜，摩托边箱哪个品牌好，主要从事激光焊接方面的研究。
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引用该论文
Zheng Shiqing,Wen Peng,Shan Jiguo. Research on Wire Transfer and Its Stability in Laser Hot Wire Welding Process[J]. Chinese Journal of Lasers, 2014, 41(4): 0403008
郑世卿,温鹏,单际国. 激光热丝焊接过程焊丝过渡行为及其稳定性的研究[J]. 中国激光, 2014, 41(4): 0403008
被引情况
【1】杨瑞霞,杨立军,刘桐,赵圣斌. A304不锈钢NdYAG激光焊光致等离子体电信号频谱分析. 中国激光, 2016, 43(8): 802008--1
【2】李时春,许伟,伍俏平. 填充焊丝对激光焊接过程的影响. 激光与光电子学进展, 2017, 54(12): 120005--1
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