摘要
采用磁脉冲焊接对3003铝合金管与1Cr18Ni9Ti不锈钢棒进行了焊接,研究了集磁器开口间隙对磁脉冲焊接接头连接效果的影响规律,并通过空管变形实验对焊接结果进行了进一步分析.实验结果表明,集磁器开口间隙减弱了其附近位置外管所受的磁场力,导致在焊接过程中开口间隙附近外管的变形速度小于其他位置,引起外管向内棒冲击时产生周向冲击角度,从而使集磁器开口间隙附近接头出现了轴向连接,反而有利于管棒连接.不同冲击间隙下均有其所对应的最优放电电压范围,在受到集磁器开口间隙的影响下,电压过大会导致接头开裂.
The 3003 aluminum alloy tube and 1Cr18Ni9Ti stainless steel rod were welded by magnetic pulse welding.The influence of the field shaper gap on the connection effect of the magnetic pulse welding joint was studied.The welding results were further analyzed by empty tube deformation experiments.The results show that the magnetic force of the outer tube near the field shaper gap is decreased,and therefore the deformation speed of the outer tube near the field shaper gap is smaller than those of other positions during the welding process.However,in the process,a circumferential impact angle of the outer tube to the inner rod has been generated by the deformation speed difference,so that an axial connection along the joint is created near the field shaper gap,which is beneficial to the connection of the aluminum alloy tube to stainless steel rod.Different impact gaps have their corresponding optimal discharge voltage ranges.Under the influence of the field shaper gap,excessive voltage leads to joint cracking.
作者
陈树君
阚纯磊
袁涛
蒋晓青
龚文韬
Chen Shujun;Kan Chunlei;Yuan Tao;Jiang Xiaoqing;Gong Wentao(College of Mechanical Engineering and Applied Electronics Technology,Beijing University of Technology,Beijing 100124,China)
出处
《天津大学学报（自然科学与工程技术版）》
EI
CSCD
北大核心
2018年第12期1223-1229,共7页
Journal of Tianjin University：Science and Technology
基金
国家自然科学基金资助项目(51575012)
中国博士后科学基金资助项目(2016M600881)
北京市博士后科研活动经费资助项目(2017-ZZ-045)
朝阳区博士后科研活动经费资助项目(2017ZZ-01-19)
北京工业大学基础研究基金资助项目(001000546318524)~~
关键词
磁脉冲焊接
集磁器开口间隙
异种金属
空管变形
magnetic pulse welding
field shaper gap
dissimilar metal
empty tube deformation
作者简介
陈树君(1971—),男,博士,教授,sjchen@bjut.edu.cn.;通讯作者:袁涛,ty29@bjut.edu.cn.
