基于紫铜填充中间层的黄铜激光焊接气孔控制

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英文篇名：Controlling of Laser Welding Porosities of Brass Based on Filled Intermediate Layer of Copper 作者：陈梅峰 ; 周广涛 ; 吴世凯 ; 刘方 ; 张华 英文作者：Chen Meifeng;Zhou Guangtao;Wu Shikai;Liu Fang;Zhang Hua;College of Mechanical Engineering and Automation, Huaqiao University;Beijing Engineering Researching Center of Laser Technology, Beijing University of Technology;State Key Laboratory of Advanced Welding and Joining, Harbin Institute of Technology; 关键词：激光技术 ; 激光焊接 ; 紫铜中间层 ; 黄铜 ; 焊接气孔 英文关键词：laser technique;;laser welding;;copper intermediate layer;;brass;;welding porosity 中文刊名：JJZZ 英文刊名：Chinese Journal of Lasers 机构：华侨大学机电及自动化学院;北京工业大学北京市激光应用技术工程技术研究中心;哈尔滨工业大学先进焊接与连接国家重点实验室; 出版日期：2018-12-25 07:03 出版单位：中国激光 年：2019 期：v.46;No.507 基金：先进焊接与连接国家重点实验室开放课题(AWJ-16-M11);; 北京市激光应用技术工程技术研究中心开放课题(BG0046-2018-07);; 华侨大学研究生科研创新基金资助项目 语种：中文; 页：JJZZ201903013 页数：7 CN：03 ISSN：31-1339/TN 分类号：108-114

摘要

采用中间过渡层的新方法研究了黄铜焊接气孔的控制,对比分析了以紫铜为中间层的黄铜激光焊接和常规激光焊接获得的焊缝的气孔率,结果表明:在中间层条件下,焊缝表面和内部的气孔率均大幅降低;随着焊接速率增大,气孔率逐渐减小,当焊接速率为2.2 mm/s时,气孔率几乎为零;当焊接参数相同时,中间层条件下的焊缝气孔率仅为常规激光焊接的1/3,焊接接头的力学性能优于常规激光焊接。在焊缝成形良好的前提下,验证了采用紫铜为中间层的焊接方法控制黄铜激光焊接气孔缺陷的有效性。
        The control of brass welding porosity is studied by adopting a new method of the intermediate transition layer. The weld porosities of brass laser welding under the copper intermediate layer condition and brass general butt laser welding are contrasted and analyzed. The research results reveal that the porosities of weld surface and weld interior are greatly reduced under the condition of the intermediate layer. As the welding speed increases, the porosity decreases gradually. The porosity is almost zero when the welding speed is 2.2 mm/s. When the welding parameters are the same, the porosity of the weld under the intermediate layer condition is barely one third of that in the normal butt laser welding of brass sheet. The mechanical properties of welded joint obtained at the intermediate layer condition is superior to that of welded joint obtained at normal butt laser welding. Under the premise of good weld formation, the effectiveness of the new method of the copper intermediate layer to control the porosity defects of brass laser welding is verified.

引文

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