四毛细管-板结构件扫描电子束钎焊  

Scanning Electron Beam Brazing of the Structure of Four Capillary Tubes to a Plate

作　　者：李少青[1] 张毓新[1] 王学东[1] 芦凤桂[1] 姚舜[1] 

机构地区：[1]上海交通大学焊接工程研究所,上海200030

出　　处：《机械工程材料》2006年第2期16-18,共3页Materials For Mechanical Engineering

摘　　要：开发了一个基于虚拟仪器的扫描电子束钎焊系统,采用四叶形扫描轨迹对四毛细管-板结构件进行钎焊,升温速度采用PID控制方法。结果表明:扫描电子束钎焊中最高温度为1 050℃时,钎焊接头质量满足结构技术规范,此情况下钎焊接头平均升温速度为25℃/s,高温停留时间为10 s,温度控制精度为±1℃,避免了薄壁毛细管出现溶蚀、熔穿和堵塞等缺陷。A scanning electron beam brazing （SEBB） system was developed based on virtual instruments. By means of the SEBB system, experiments of the structure of four capillary tubes to a plate were carried out with a four-leaf scanning track and PID control method of heating-up velocity. The quality of brazing joints met the technical specification of structure when the highest temperature of joints during SEBB was 1 050℃. Under these circumstances, the average heating-up velocity of brazing joints was 25℃/s, the holding time at the high temperature was 10 s, the temperature control precision was ±1℃, and the defects such as erosion, penetration or clogging of thin wall tubes could be avoided.

关 键 词：扫描电子束钎焊 扫描轨迹 管板接头 

分 类 号：TG456.9[金属学及工艺—焊接]